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mojo / mojo-tools / b98c4fe8e3f25f51813da78db01825cd629d218e / . / mojo / edk / system / data_pipe_impl_unittest.cc
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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file contains tests that are shared between different implementations of
// |DataPipeImpl|.
#include "mojo/edk/system/data_pipe_impl.h"
#include <stdint.h>
#include <memory>
#include <utility>
#include "base/logging.h"
#include "mojo/edk/embedder/simple_platform_support.h"
#include "mojo/edk/platform/platform_pipe.h"
#include "mojo/edk/platform/thread_utils.h"
#include "mojo/edk/system/channel.h"
#include "mojo/edk/system/channel_endpoint.h"
#include "mojo/edk/system/data_pipe.h"
#include "mojo/edk/system/data_pipe_consumer_dispatcher.h"
#include "mojo/edk/system/data_pipe_producer_dispatcher.h"
#include "mojo/edk/system/memory.h"
#include "mojo/edk/system/message_pipe.h"
#include "mojo/edk/system/raw_channel.h"
#include "mojo/edk/system/test/test_io_thread.h"
#include "mojo/edk/system/test/timeouts.h"
#include "mojo/edk/system/waiter.h"
#include "mojo/edk/util/ref_ptr.h"
#include "mojo/public/cpp/system/macros.h"
#include "testing/gtest/include/gtest/gtest.h"
using mojo::platform::PlatformPipe;
using mojo::platform::ThreadSleep;
using mojo::util::MakeRefCounted;
using mojo::util::RefPtr;
namespace mojo {
namespace system {
namespace {
const uint32_t kSizeOfOptions =
static_cast<uint32_t>(sizeof(MojoCreateDataPipeOptions));
// In various places, we have to poll (since, e.g., we can't yet wait for a
// certain amount of data to be available). This is the maximum number of
// iterations (separated by a short sleep).
// TODO(vtl): Get rid of this.
const size_t kMaxPoll = 100;
// DataPipeImplTestHelper ------------------------------------------------------
class DataPipeImplTestHelper {
public:
virtual ~DataPipeImplTestHelper() {}
virtual void SetUp() = 0;
virtual void TearDown() = 0;
virtual void Create(const MojoCreateDataPipeOptions& validated_options) = 0;
// Returns true if the producer and consumer exhibit the behavior that you'd
// expect from a pure circular buffer implementation (reflected to two-phase
// reads and writes).
virtual bool IsStrictCircularBuffer() const = 0;
// Possibly transfers the producer/consumer.
virtual void DoTransfer() = 0;
// Returns the |DataPipe| object for the producer and consumer, respectively.
virtual DataPipe* DataPipeForProducer() = 0;
virtual DataPipe* DataPipeForConsumer() = 0;
// Closes the producer and consumer, respectively. (Other operations go
// through the above accessors; closing is special since it may require that a
// dispatcher be closed.)
virtual void ProducerClose() = 0;
virtual void ConsumerClose() = 0;
protected:
DataPipeImplTestHelper() {}
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(DataPipeImplTestHelper);
};
// DataPipeImplTest ------------------------------------------------------------
template <class Helper>
class DataPipeImplTest : public testing::Test {
public:
DataPipeImplTest() {}
~DataPipeImplTest() override {}
void SetUp() override { Reset(); }
void TearDown() override { helper_->TearDown(); }
protected:
void Create(const MojoCreateDataPipeOptions& options) {
MojoCreateDataPipeOptions validated_options = {};
ASSERT_EQ(MOJO_RESULT_OK,
DataPipe::ValidateCreateOptions(MakeUserPointer(&options),
&validated_options));
helper_->Create(validated_options);
}
bool IsStrictCircularBuffer() const {
return helper_->IsStrictCircularBuffer();
}
void DoTransfer() { return helper_->DoTransfer(); }
void Reset() {
if (helper_)
helper_->TearDown();
helper_.reset(new Helper());
helper_->SetUp();
}
void ProducerClose() { helper_->ProducerClose(); }
MojoResult ProducerWriteData(UserPointer<const void> elements,
UserPointer<uint32_t> num_bytes,
bool all_or_none) {
return dpp()->ProducerWriteData(elements, num_bytes, all_or_none);
}
MojoResult ProducerBeginWriteData(UserPointer<void*> buffer,
UserPointer<uint32_t> buffer_num_bytes) {
return dpp()->ProducerBeginWriteData(buffer, buffer_num_bytes);
}
MojoResult ProducerEndWriteData(uint32_t num_bytes_written) {
return dpp()->ProducerEndWriteData(num_bytes_written);
}
MojoResult ProducerAddAwakable(Awakable* awakable,
MojoHandleSignals signals,
uint32_t context,
HandleSignalsState* signals_state) {
return dpp()->ProducerAddAwakable(awakable, signals, context,
signals_state);
}
void ProducerRemoveAwakable(Awakable* awakable,
HandleSignalsState* signals_state) {
return dpp()->ProducerRemoveAwakable(awakable, signals_state);
}
void ConsumerClose() { helper_->ConsumerClose(); }
MojoResult ConsumerSetOptions(uint32_t read_threshold_num_bytes) {
return dpc()->ConsumerSetOptions(read_threshold_num_bytes);
}
void ConsumerGetOptions(uint32_t* read_threshold_num_bytes) {
dpc()->ConsumerGetOptions(read_threshold_num_bytes);
}
MojoResult ConsumerReadData(UserPointer<void> elements,
UserPointer<uint32_t> num_bytes,
bool all_or_none,
bool peek) {
return dpc()->ConsumerReadData(elements, num_bytes, all_or_none, peek);
}
MojoResult ConsumerDiscardData(UserPointer<uint32_t> num_bytes,
bool all_or_none) {
return dpc()->ConsumerDiscardData(num_bytes, all_or_none);
}
MojoResult ConsumerQueryData(UserPointer<uint32_t> num_bytes) {
return dpc()->ConsumerQueryData(num_bytes);
}
MojoResult ConsumerBeginReadData(UserPointer<const void*> buffer,
UserPointer<uint32_t> buffer_num_bytes) {
return dpc()->ConsumerBeginReadData(buffer, buffer_num_bytes);
}
MojoResult ConsumerEndReadData(uint32_t num_bytes_read) {
return dpc()->ConsumerEndReadData(num_bytes_read);
}
MojoResult ConsumerAddAwakable(Awakable* awakable,
MojoHandleSignals signals,
uint32_t context,
HandleSignalsState* signals_state) {
return dpc()->ConsumerAddAwakable(awakable, signals, context,
signals_state);
}
void ConsumerRemoveAwakable(Awakable* awakable,
HandleSignalsState* signals_state) {
return dpc()->ConsumerRemoveAwakable(awakable, signals_state);
}
private:
DataPipe* dpp() { return helper_->DataPipeForProducer(); }
DataPipe* dpc() { return helper_->DataPipeForConsumer(); }
std::unique_ptr<Helper> helper_;
MOJO_DISALLOW_COPY_AND_ASSIGN(DataPipeImplTest);
};
// LocalDataPipeImplTestHelper -------------------------------------------------
class LocalDataPipeImplTestHelper : public DataPipeImplTestHelper {
public:
LocalDataPipeImplTestHelper() {}
~LocalDataPipeImplTestHelper() override {}
void SetUp() override {}
void TearDown() override {}
void Create(const MojoCreateDataPipeOptions& validated_options) override {
CHECK(!dp_);
dp_ = DataPipe::CreateLocal(validated_options);
}
bool IsStrictCircularBuffer() const override { return true; }
void DoTransfer() override {}
// Returns the |DataPipe| object for the producer and consumer, respectively.
DataPipe* DataPipeForProducer() override { return dp_.get(); }
DataPipe* DataPipeForConsumer() override { return dp_.get(); }
void ProducerClose() override { dp_->ProducerClose(); }
void ConsumerClose() override { dp_->ConsumerClose(); }
private:
RefPtr<DataPipe> dp_;
MOJO_DISALLOW_COPY_AND_ASSIGN(LocalDataPipeImplTestHelper);
};
// RemoteDataPipeImplTestHelper ------------------------------------------------
// Base class for |Remote{Producer,Consumer}DataPipeImplTestHelper|.
class RemoteDataPipeImplTestHelper : public DataPipeImplTestHelper {
public:
RemoteDataPipeImplTestHelper()
: platform_support_(embedder::CreateSimplePlatformSupport()),
io_thread_(test::TestIOThread::StartMode::AUTO) {}
~RemoteDataPipeImplTestHelper() override {}
void SetUp() override {
RefPtr<ChannelEndpoint> ep[2];
message_pipes_[0] = MessagePipe::CreateLocalProxy(&ep[0]);
message_pipes_[1] = MessagePipe::CreateLocalProxy(&ep[1]);
io_thread_.PostTaskAndWait([this, &ep]() mutable {
SetUpOnIOThread(std::move(ep[0]), std::move(ep[1]));
});
}
void TearDown() override {
EnsureMessagePipeClosed(0);
EnsureMessagePipeClosed(1);
io_thread_.PostTaskAndWait([this]() { TearDownOnIOThread(); });
}
void Create(const MojoCreateDataPipeOptions& validated_options) override {
CHECK(!dp_);
dp_ = DataPipe::CreateLocal(validated_options);
}
bool IsStrictCircularBuffer() const override { return false; }
protected:
void SendDispatcher(size_t source_i,
RefPtr<Dispatcher> to_send,
RefPtr<Dispatcher>* to_receive) {
DCHECK(source_i == 0 || source_i == 1);
size_t dest_i = source_i ^ 1;
// Write the dispatcher to MP |source_i| (port 0). Wait and receive on MP
// |dest_i| (port 0). (Add the waiter first, to avoid any handling the case
// where it's already readable.)
Waiter waiter;
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
message_pipe(dest_i)->AddAwakable(
0, &waiter, MOJO_HANDLE_SIGNAL_READABLE, 987, nullptr));
{
DispatcherTransport transport(
test::DispatcherTryStartTransport(to_send.get()));
ASSERT_TRUE(transport.is_valid());
std::vector<DispatcherTransport> transports;
transports.push_back(transport);
ASSERT_EQ(MOJO_RESULT_OK, message_pipe(source_i)->WriteMessage(
0, NullUserPointer(), 0, &transports,
MOJO_WRITE_MESSAGE_FLAG_NONE));
transport.End();
}
uint32_t context = 0;
ASSERT_EQ(MOJO_RESULT_OK, waiter.Wait(test::ActionTimeout(), &context));
EXPECT_EQ(987u, context);
HandleSignalsState hss = HandleSignalsState();
message_pipe(dest_i)->RemoveAwakable(0, &waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
char read_buffer[100] = {};
uint32_t read_buffer_size = static_cast<uint32_t>(sizeof(read_buffer));
DispatcherVector read_dispatchers;
uint32_t read_num_dispatchers = 10; // Maximum to get.
ASSERT_EQ(MOJO_RESULT_OK,
message_pipe(dest_i)->ReadMessage(
0, UserPointer<void>(read_buffer),
MakeUserPointer(&read_buffer_size), &read_dispatchers,
&read_num_dispatchers, MOJO_READ_MESSAGE_FLAG_NONE));
EXPECT_EQ(0u, static_cast<size_t>(read_buffer_size));
ASSERT_EQ(1u, read_dispatchers.size());
ASSERT_EQ(1u, read_num_dispatchers);
ASSERT_TRUE(read_dispatchers[0]);
EXPECT_TRUE(read_dispatchers[0]->HasOneRef());
*to_receive = read_dispatchers[0];
}
RefPtr<MessagePipe> message_pipe(size_t i) { return message_pipes_[i]; }
RefPtr<DataPipe> dp() { return dp_; }
private:
void EnsureMessagePipeClosed(size_t i) {
if (!message_pipes_[i])
return;
message_pipes_[i]->Close(0);
message_pipes_[i] = nullptr;
}
void SetUpOnIOThread(RefPtr<ChannelEndpoint>&& ep0,
RefPtr<ChannelEndpoint>&& ep1) {
CHECK(io_thread_.IsCurrentAndRunning());
PlatformPipe channel_pair;
channels_[0] = MakeRefCounted<Channel>(platform_support_.get());
channels_[0]->Init(io_thread_.task_runner().Clone(),
io_thread_.platform_handle_watcher(),
RawChannel::Create(channel_pair.handle0.Pass()));
channels_[0]->SetBootstrapEndpoint(std::move(ep0));
channels_[1] = MakeRefCounted<Channel>(platform_support_.get());
channels_[1]->Init(io_thread_.task_runner().Clone(),
io_thread_.platform_handle_watcher(),
RawChannel::Create(channel_pair.handle1.Pass()));
channels_[1]->SetBootstrapEndpoint(std::move(ep1));
}
void TearDownOnIOThread() {
CHECK(io_thread_.IsCurrentAndRunning());
if (channels_[0]) {
channels_[0]->Shutdown();
channels_[0] = nullptr;
}
if (channels_[1]) {
channels_[1]->Shutdown();
channels_[1] = nullptr;
}
}
std::unique_ptr<embedder::PlatformSupport> platform_support_;
test::TestIOThread io_thread_;
RefPtr<Channel> channels_[2];
RefPtr<MessagePipe> message_pipes_[2];
RefPtr<DataPipe> dp_;
MOJO_DISALLOW_COPY_AND_ASSIGN(RemoteDataPipeImplTestHelper);
};
// RemoteProducerDataPipeImplTestHelper ----------------------------------------
// Note about naming confusion: This class is named after the "local" class,
// i.e., |dp_| will have a |RemoteProducerDataPipeImpl|. The remote side, of
// course, will have a |RemoteConsumerDataPipeImpl|.
class RemoteProducerDataPipeImplTestHelper
: public RemoteDataPipeImplTestHelper {
public:
RemoteProducerDataPipeImplTestHelper() {}
~RemoteProducerDataPipeImplTestHelper() override {}
void DoTransfer() override {
// This is the producer dispatcher we'll send.
auto to_send = DataPipeProducerDispatcher::Create();
to_send->Init(dp());
RefPtr<Dispatcher> to_receive;
SendDispatcher(0, to_send, &to_receive);
// |to_send| should have been closed. This is |DCHECK()|ed when it is
// destroyed.
EXPECT_TRUE(to_send->HasOneRef());
to_send = nullptr;
ASSERT_EQ(Dispatcher::Type::DATA_PIPE_PRODUCER, to_receive->GetType());
producer_dispatcher_ = RefPtr<DataPipeProducerDispatcher>(
static_cast<DataPipeProducerDispatcher*>(to_receive.get()));
}
DataPipe* DataPipeForProducer() override {
if (producer_dispatcher_)
return producer_dispatcher_->GetDataPipeForTest();
return dp().get();
}
DataPipe* DataPipeForConsumer() override { return dp().get(); }
void ProducerClose() override {
if (producer_dispatcher_)
ASSERT_EQ(MOJO_RESULT_OK, producer_dispatcher_->Close());
else
dp()->ProducerClose();
}
void ConsumerClose() override { dp()->ConsumerClose(); }
protected:
RefPtr<DataPipeProducerDispatcher> producer_dispatcher_;
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(RemoteProducerDataPipeImplTestHelper);
};
// RemoteConsumerDataPipeImplTestHelper ----------------------------------------
// Note about naming confusion: This class is named after the "local" class,
// i.e., |dp_| will have a |RemoteConsumerDataPipeImpl|. The remote side, of
// course, will have a |RemoteProducerDataPipeImpl|.
class RemoteConsumerDataPipeImplTestHelper
: public RemoteDataPipeImplTestHelper {
public:
RemoteConsumerDataPipeImplTestHelper() {}
~RemoteConsumerDataPipeImplTestHelper() override {}
void DoTransfer() override {
// This is the consumer dispatcher we'll send.
auto to_send = DataPipeConsumerDispatcher::Create();
to_send->Init(dp());
RefPtr<Dispatcher> to_receive;
SendDispatcher(0, to_send, &to_receive);
// |to_send| should have been closed. This is |DCHECK()|ed when it is
// destroyed.
EXPECT_TRUE(to_send->HasOneRef());
to_send = nullptr;
ASSERT_EQ(Dispatcher::Type::DATA_PIPE_CONSUMER, to_receive->GetType());
consumer_dispatcher_ = RefPtr<DataPipeConsumerDispatcher>(
static_cast<DataPipeConsumerDispatcher*>(to_receive.get()));
}
DataPipe* DataPipeForProducer() override { return dp().get(); }
DataPipe* DataPipeForConsumer() override {
if (consumer_dispatcher_)
return consumer_dispatcher_->GetDataPipeForTest();
return dp().get();
}
void ProducerClose() override { dp()->ProducerClose(); }
void ConsumerClose() override {
if (consumer_dispatcher_)
ASSERT_EQ(MOJO_RESULT_OK, consumer_dispatcher_->Close());
else
dp()->ConsumerClose();
}
protected:
RefPtr<DataPipeConsumerDispatcher> consumer_dispatcher_;
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(RemoteConsumerDataPipeImplTestHelper);
};
// RemoteProducerDataPipeImplTestHelper2 ---------------------------------------
// This is like |RemoteProducerDataPipeImplTestHelper|, but |DoTransfer()| does
// a second transfer. This thus tests passing a producer handle twice, and in
// particular tests (some of) |RemoteConsumerDataPipeImpl|'s
// |ProducerEndSerialize()| (instead of |LocalDataPipeImpl|'s).
//
// Note about naming confusion: This class is named after the "local" class,
// i.e., |dp_| will have a |RemoteProducerDataPipeImpl|. The remote side, of
// course, will have a |RemoteConsumerDataPipeImpl|.
class RemoteProducerDataPipeImplTestHelper2
: public RemoteProducerDataPipeImplTestHelper {
public:
RemoteProducerDataPipeImplTestHelper2() {}
~RemoteProducerDataPipeImplTestHelper2() override {}
void DoTransfer() override {
// This is the producer dispatcher we'll send.
auto to_send = DataPipeProducerDispatcher::Create();
to_send->Init(dp());
RefPtr<Dispatcher> to_receive;
SendDispatcher(0, to_send, &to_receive);
// |to_send| should have been closed. This is |DCHECK()|ed when it is
// destroyed.
EXPECT_TRUE(to_send->HasOneRef());
to_send = nullptr;
ASSERT_EQ(Dispatcher::Type::DATA_PIPE_PRODUCER, to_receive->GetType());
to_send = RefPtr<DataPipeProducerDispatcher>(
static_cast<DataPipeProducerDispatcher*>(to_receive.get()));
to_receive = nullptr;
// Now send it back the other way.
SendDispatcher(1, to_send, &to_receive);
// |producer_dispatcher_| should have been closed. This is |DCHECK()|ed when
// it is destroyed.
EXPECT_TRUE(to_send->HasOneRef());
to_send = nullptr;
ASSERT_EQ(Dispatcher::Type::DATA_PIPE_PRODUCER, to_receive->GetType());
producer_dispatcher_ = RefPtr<DataPipeProducerDispatcher>(
static_cast<DataPipeProducerDispatcher*>(to_receive.get()));
}
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(RemoteProducerDataPipeImplTestHelper2);
};
// RemoteConsumerDataPipeImplTestHelper2 ---------------------------------------
// This is like |RemoteConsumerDataPipeImplTestHelper|, but |DoTransfer()| does
// a second transfer. This thus tests passing a consumer handle twice, and in
// particular tests (some of) |RemoteProducerDataPipeImpl|'s
// |ConsumerEndSerialize()| (instead of |LocalDataPipeImpl|'s).
//
// Note about naming confusion: This class is named after the "local" class,
// i.e., |dp_| will have a |RemoteConsumerDataPipeImpl|. The remote side, of
// course, will have a |RemoteProducerDataPipeImpl|.
class RemoteConsumerDataPipeImplTestHelper2
: public RemoteConsumerDataPipeImplTestHelper {
public:
RemoteConsumerDataPipeImplTestHelper2() {}
~RemoteConsumerDataPipeImplTestHelper2() override {}
void DoTransfer() override {
// This is the consumer dispatcher we'll send.
auto to_send = DataPipeConsumerDispatcher::Create();
to_send->Init(dp());
RefPtr<Dispatcher> to_receive;
SendDispatcher(0, to_send, &to_receive);
// |to_send| should have been closed. This is |DCHECK()|ed when it is
// destroyed.
EXPECT_TRUE(to_send->HasOneRef());
to_send = nullptr;
ASSERT_EQ(Dispatcher::Type::DATA_PIPE_CONSUMER, to_receive->GetType());
to_send = RefPtr<DataPipeConsumerDispatcher>(
static_cast<DataPipeConsumerDispatcher*>(to_receive.get()));
to_receive = nullptr;
// Now send it back the other way.
SendDispatcher(1, to_send, &to_receive);
// |consumer_dispatcher_| should have been closed. This is |DCHECK()|ed when
// it is destroyed.
EXPECT_TRUE(to_send->HasOneRef());
to_send = nullptr;
ASSERT_EQ(Dispatcher::Type::DATA_PIPE_CONSUMER, to_receive->GetType());
consumer_dispatcher_ = RefPtr<DataPipeConsumerDispatcher>(
static_cast<DataPipeConsumerDispatcher*>(to_receive.get()));
}
private:
MOJO_DISALLOW_COPY_AND_ASSIGN(RemoteConsumerDataPipeImplTestHelper2);
};
// Test case instantiation -----------------------------------------------------
using HelperTypes = testing::Types<LocalDataPipeImplTestHelper,
RemoteProducerDataPipeImplTestHelper,
RemoteConsumerDataPipeImplTestHelper,
RemoteProducerDataPipeImplTestHelper2,
RemoteConsumerDataPipeImplTestHelper2>;
TYPED_TEST_CASE(DataPipeImplTest, HelperTypes);
// Tests -----------------------------------------------------------------------
// Tests creation (and possibly also transferring) of data pipes with various
// (valid) options.
TYPED_TEST(DataPipeImplTest, CreateAndMaybeTransfer) {
MojoCreateDataPipeOptions test_options[] = {
// Default options -- we'll initialize this below.
{},
// Trivial element size, non-default capacity.
{kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1, // |element_num_bytes|.
1000}, // |capacity_num_bytes|.
// Nontrivial element size, non-default capacity.
{kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
4, // |element_num_bytes|.
4000}, // |capacity_num_bytes|.
// Nontrivial element size, default capacity.
{kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
100, // |element_num_bytes|.
0} // |capacity_num_bytes|.
};
// Initialize the first element of |test_options| to the default options.
EXPECT_EQ(MOJO_RESULT_OK, DataPipe::ValidateCreateOptions(NullUserPointer(),
&test_options[0]));
for (size_t i = 0; i < MOJO_ARRAYSIZE(test_options); i++) {
this->Create(test_options[i]);
this->DoTransfer();
this->ProducerClose();
this->ConsumerClose();
this->Reset();
}
}
TYPED_TEST(DataPipeImplTest, SimpleReadWrite) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
1000 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
uint32_t context;
int32_t elements[10] = {};
uint32_t num_bytes = 0u;
// Try reading; nothing there yet.
num_bytes =
static_cast<uint32_t>(MOJO_ARRAYSIZE(elements) * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_SHOULD_WAIT,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), false, false));
// Query; nothing there yet.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
// Discard; nothing there yet.
num_bytes = static_cast<uint32_t>(5u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_SHOULD_WAIT,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), false));
// Read with invalid |num_bytes|.
num_bytes = sizeof(elements[0]) + 1;
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), false, false));
// For remote data pipes, we'll have to wait; add the waiter before writing.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 123,
nullptr));
// Write two elements.
elements[0] = 123;
elements[1] = 456;
num_bytes = static_cast<uint32_t>(2u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(elements),
MakeUserPointer(&num_bytes), false));
// It should have written everything (even without "all or none").
EXPECT_EQ(2u * sizeof(elements[0]), num_bytes);
// Wait.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::ActionTimeout(), &context));
EXPECT_EQ(123u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Query.
// TODO(vtl): It's theoretically possible (though not with the current
// implementation/configured limits) that not all the data has arrived yet.
// (The theoretically-correct assertion here is that |num_bytes| is |1 * ...|
// or |2 * ...|.)
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(2 * sizeof(elements[0]), num_bytes);
// Read one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), false, false));
EXPECT_EQ(1u * sizeof(elements[0]), num_bytes);
EXPECT_EQ(123, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Query.
// TODO(vtl): See previous TODO. (If we got 2 elements there, however, we
// should get 1 here.)
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(1 * sizeof(elements[0]), num_bytes);
// Peek one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), false, true));
EXPECT_EQ(1u * sizeof(elements[0]), num_bytes);
EXPECT_EQ(456, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Query. Still has 1 element remaining.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(1 * sizeof(elements[0]), num_bytes);
// Try to read two elements, with "all or none".
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(2u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(-1, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Try to read two elements, without "all or none".
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(2u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), false, false));
EXPECT_EQ(1u * sizeof(elements[0]), num_bytes);
EXPECT_EQ(456, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Query.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
this->ProducerClose();
this->ConsumerClose();
}
// Note: The "basic" waiting tests test that the "wait states" are correct in
// various situations; they don't test that waiters are properly awoken on state
// changes. (For that, we need to use multiple threads.)
TYPED_TEST(DataPipeImplTest, BasicProducerWaiting) {
// Note: We take advantage of the fact that current for current
// implementations capacities are strict maximums. This is not guaranteed by
// the API.
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
2 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter pwaiter; // For producer.
Waiter cwaiter; // For consumer.
HandleSignalsState hss;
uint32_t context;
// Never readable.
pwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_READABLE, 12,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// Already writable.
pwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 34,
&hss));
// We'll need to wait for readability for the remote cases.
cwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&cwaiter, MOJO_HANDLE_SIGNAL_READABLE,
1234, nullptr));
// Write two elements.
int32_t elements[2] = {123, 456};
uint32_t num_bytes = static_cast<uint32_t>(2u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(elements),
MakeUserPointer(&num_bytes), true));
EXPECT_EQ(static_cast<uint32_t>(2u * sizeof(elements[0])), num_bytes);
// Adding a waiter should now succeed.
pwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 56,
nullptr));
// And it shouldn't be writable yet.
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, pwaiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&pwaiter, &hss);
EXPECT_EQ(0u, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// Wait for data to become available to the consumer.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, cwaiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(1234u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&cwaiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Peek one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), true, true));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
EXPECT_EQ(123, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Add a waiter.
pwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 56,
nullptr));
// And it still shouldn't be writable yet.
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, pwaiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&pwaiter, &hss);
EXPECT_EQ(0u, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// Do it again.
pwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 78,
nullptr));
// Read one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
EXPECT_EQ(123, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Waiting should now succeed.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, pwaiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(78u, context);
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&pwaiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// Try writing, using a two-phase write.
void* buffer = nullptr;
num_bytes = static_cast<uint32_t>(3u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&buffer),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(buffer);
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
static_cast<int32_t*>(buffer)[0] = 789;
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(static_cast<uint32_t>(
1u * sizeof(elements[0]))));
// Add a waiter.
pwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 90,
nullptr));
// Read one element, using a two-phase read.
const void* read_buffer = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer);
// Since we only read one element (after having written three in all), the
// two-phase read should only allow us to read one. This checks an
// implementation detail!
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
EXPECT_EQ(456, static_cast<const int32_t*>(read_buffer)[0]);
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(static_cast<uint32_t>(
1u * sizeof(elements[0]))));
// Waiting should succeed.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, pwaiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(90u, context);
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&pwaiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// Write one element.
elements[0] = 123;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(elements),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
// Add a waiter.
pwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 12,
nullptr));
// Close the consumer.
this->ConsumerClose();
// It should now be never-writable.
context = 0;
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
pwaiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(12u, context);
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&pwaiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ProducerClose();
}
TYPED_TEST(DataPipeImplTest, PeerClosedProducerWaiting) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
2 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
uint32_t context;
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
12, nullptr));
// Close the consumer.
this->ConsumerClose();
// It should be signaled.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(12u, context);
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ProducerClose();
}
TYPED_TEST(DataPipeImplTest, PeerClosedConsumerWaiting) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
2 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
uint32_t context;
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
12, nullptr));
// Close the producer.
this->ProducerClose();
// It should be signaled.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(12u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ConsumerClose();
}
TYPED_TEST(DataPipeImplTest, BasicConsumerWaiting) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
1000 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
Waiter waiter2;
HandleSignalsState hss;
uint32_t context;
// Never writable.
waiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_WRITABLE, 12,
&hss));
EXPECT_EQ(0u, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Add waiter: not yet readable.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 34,
nullptr));
// Write two elements.
int32_t elements[2] = {123, 456};
uint32_t num_bytes = static_cast<uint32_t>(2u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(elements),
MakeUserPointer(&num_bytes), true));
// Wait for readability (needed for remote cases).
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(34u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Discard one element.
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), true));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
// Should still be readable.
waiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 78,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Peek one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), true, true));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
EXPECT_EQ(456, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Should still be readable.
waiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 78,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
EXPECT_EQ(456, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Adding a waiter should now succeed.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 90,
nullptr));
// Write one element.
elements[0] = 789;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(elements),
MakeUserPointer(&num_bytes), true));
// Waiting should now succeed.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(90u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// We'll want to wait for the peer closed signal to propagate.
waiter.Init();
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
12, nullptr));
// Close the producer.
this->ProducerClose();
// Should still be readable, even if the peer closed signal hasn't propagated
// yet.
waiter2.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(&waiter2, MOJO_HANDLE_SIGNAL_READABLE, 34,
&hss));
// We don't know if the peer closed signal has propagated yet (for the remote
// cases).
EXPECT_TRUE((hss.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Wait for the peer closed signal.
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(12u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read one element.
elements[0] = -1;
elements[1] = -1;
num_bytes = static_cast<uint32_t>(1u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(elements),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
EXPECT_EQ(789, elements[0]);
EXPECT_EQ(-1, elements[1]);
// Should be never-readable.
waiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 56,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ConsumerClose();
}
// Test with two-phase APIs and also closing the producer with an active
// consumer waiter.
TYPED_TEST(DataPipeImplTest, ConsumerWaitingTwoPhase) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
1000 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
uint32_t context;
// Add waiter: not yet readable.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 12,
nullptr));
// Write two elements.
int32_t* elements = nullptr;
void* buffer = nullptr;
uint32_t num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&buffer),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(buffer);
EXPECT_GE(num_bytes, static_cast<uint32_t>(3u * sizeof(elements[0])));
elements = static_cast<int32_t*>(buffer);
elements[0] = 123;
elements[1] = 456;
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(static_cast<uint32_t>(
2u * sizeof(elements[0]))));
// Wait for readability (needed for remote cases).
context = 0;
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(12u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read one element.
const void* read_buffer = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer);
EXPECT_EQ(static_cast<uint32_t>(2u * sizeof(elements[0])), num_bytes);
const int32_t* read_elements = static_cast<const int32_t*>(read_buffer);
EXPECT_EQ(123, read_elements[0]);
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(static_cast<uint32_t>(
1u * sizeof(elements[0]))));
// Should still be readable.
waiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 34,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read one element.
// Request three, but not in all-or-none mode.
read_buffer = nullptr;
num_bytes = static_cast<uint32_t>(3u * sizeof(elements[0]));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer);
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(elements[0])), num_bytes);
read_elements = static_cast<const int32_t*>(read_buffer);
EXPECT_EQ(456, read_elements[0]);
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(static_cast<uint32_t>(
1u * sizeof(elements[0]))));
// Adding a waiter should now succeed.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 56,
nullptr));
// Close the producer.
this->ProducerClose();
// Should be never-readable.
context = 0;
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
waiter.Wait(test::TinyTimeout(), &context));
EXPECT_EQ(56u, context);
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ConsumerClose();
}
// Tests that data pipes aren't writable/readable during two-phase writes/reads.
TYPED_TEST(DataPipeImplTest, BasicTwoPhaseWaiting) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
1000 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter pwaiter; // For producer.
Waiter cwaiter; // For consumer.
HandleSignalsState hss;
// It should be writable.
pwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 0,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
void* write_ptr = nullptr;
uint32_t num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(write_ptr);
EXPECT_GE(num_bytes, static_cast<uint32_t>(1u * sizeof(int32_t)));
// At this point, it shouldn't be writable.
pwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 1,
nullptr));
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, pwaiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&pwaiter, &hss);
EXPECT_EQ(0u, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// It shouldn't be readable yet either (we'll wait later).
cwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&cwaiter, MOJO_HANDLE_SIGNAL_READABLE, 2,
nullptr));
static_cast<int32_t*>(write_ptr)[0] = 123;
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(
static_cast<uint32_t>(1u * sizeof(int32_t))));
// It should immediately be writable again.
pwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 3,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// It should become readable.
EXPECT_EQ(MOJO_RESULT_OK, cwaiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&cwaiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Start another two-phase write and check that it's readable even in the
// middle of it.
write_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(write_ptr);
EXPECT_GE(num_bytes, static_cast<uint32_t>(1u * sizeof(int32_t)));
// It should be readable.
cwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(&cwaiter, MOJO_HANDLE_SIGNAL_READABLE, 5,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// End the two-phase write without writing anything.
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(0u));
// Start a two-phase read.
const void* read_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_ptr);
EXPECT_EQ(static_cast<uint32_t>(1u * sizeof(int32_t)), num_bytes);
// At this point, it should still be writable.
pwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ProducerAddAwakable(&pwaiter, MOJO_HANDLE_SIGNAL_WRITABLE, 6,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// But not readable.
cwaiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&cwaiter, MOJO_HANDLE_SIGNAL_READABLE, 7,
nullptr));
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, cwaiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&cwaiter, &hss);
EXPECT_EQ(0u, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// End the two-phase read without reading anything.
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(0u));
// It should be readable again.
cwaiter.Init();
hss = HandleSignalsState();
EXPECT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(&cwaiter, MOJO_HANDLE_SIGNAL_READABLE, 8,
&hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
this->ProducerClose();
this->ConsumerClose();
}
void Seq(int32_t start, size_t count, int32_t* out) {
for (size_t i = 0; i < count; i++)
out[i] = start + static_cast<int32_t>(i);
}
TYPED_TEST(DataPipeImplTest, AllOrNone) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
10 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// Try writing way too much.
uint32_t num_bytes = 20u * sizeof(int32_t);
int32_t buffer[100];
Seq(0, MOJO_ARRAYSIZE(buffer), buffer);
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ProducerWriteData(UserPointer<const void>(buffer),
MakeUserPointer(&num_bytes), true));
// Should still be empty.
num_bytes = ~0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 1,
nullptr));
// Write some data.
num_bytes = 5u * sizeof(int32_t);
Seq(100, MOJO_ARRAYSIZE(buffer), buffer);
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(buffer),
MakeUserPointer(&num_bytes), true));
EXPECT_EQ(5u * sizeof(int32_t), num_bytes);
// Wait for data.
// TODO(vtl): There's no real guarantee that all the data will become
// available at once (except that in current implementations, with reasonable
// limits, it will). Eventually, we'll be able to wait for a specified amount
// of data to become available.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Half full.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(5u * sizeof(int32_t), num_bytes);
// Too much.
num_bytes = 6u * sizeof(int32_t);
Seq(200, MOJO_ARRAYSIZE(buffer), buffer);
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ProducerWriteData(UserPointer<const void>(buffer),
MakeUserPointer(&num_bytes), true));
// Try reading too much.
num_bytes = 11u * sizeof(int32_t);
memset(buffer, 0xab, sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), true, false));
int32_t expected_buffer[100];
memset(expected_buffer, 0xab, sizeof(expected_buffer));
EXPECT_EQ(0, memcmp(buffer, expected_buffer, sizeof(buffer)));
// Try discarding too much.
num_bytes = 11u * sizeof(int32_t);
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), true));
// Just a little.
num_bytes = 2u * sizeof(int32_t);
Seq(300, MOJO_ARRAYSIZE(buffer), buffer);
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(buffer),
MakeUserPointer(&num_bytes), true));
EXPECT_EQ(2u * sizeof(int32_t), num_bytes);
// Just right.
num_bytes = 3u * sizeof(int32_t);
Seq(400, MOJO_ARRAYSIZE(buffer), buffer);
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(buffer),
MakeUserPointer(&num_bytes), true));
EXPECT_EQ(3u * sizeof(int32_t), num_bytes);
// TODO(vtl): Hack (see also the TODO above): We can't currently wait for a
// specified amount of data to be available, so poll.
for (size_t i = 0; i < kMaxPoll; i++) {
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
if (num_bytes >= 10u * sizeof(int32_t))
break;
ThreadSleep(test::EpsilonTimeout());
}
EXPECT_EQ(10u * sizeof(int32_t), num_bytes);
// Read half.
num_bytes = 5u * sizeof(int32_t);
memset(buffer, 0xab, sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(5u * sizeof(int32_t), num_bytes);
memset(expected_buffer, 0xab, sizeof(expected_buffer));
Seq(100, 5, expected_buffer);
EXPECT_EQ(0, memcmp(buffer, expected_buffer, sizeof(buffer)));
// Try reading too much again.
num_bytes = 6u * sizeof(int32_t);
memset(buffer, 0xab, sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), true, false));
memset(expected_buffer, 0xab, sizeof(expected_buffer));
EXPECT_EQ(0, memcmp(buffer, expected_buffer, sizeof(buffer)));
// Try discarding too much again.
num_bytes = 6u * sizeof(int32_t);
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), true));
// Discard a little.
num_bytes = 2u * sizeof(int32_t);
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), true));
EXPECT_EQ(2u * sizeof(int32_t), num_bytes);
// Three left.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(3u * sizeof(int32_t), num_bytes);
// We'll need to wait for the peer closed to propagate.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
2, nullptr));
// Close the producer, then test producer-closed cases.
this->ProducerClose();
// Wait.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Try reading too much; "failed precondition" since the producer is closed.
num_bytes = 4u * sizeof(int32_t);
memset(buffer, 0xab, sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), true, false));
memset(expected_buffer, 0xab, sizeof(expected_buffer));
EXPECT_EQ(0, memcmp(buffer, expected_buffer, sizeof(buffer)));
// Try discarding too much; "failed precondition" again.
num_bytes = 4u * sizeof(int32_t);
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), true));
// Read a little.
num_bytes = 2u * sizeof(int32_t);
memset(buffer, 0xab, sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(2u * sizeof(int32_t), num_bytes);
memset(expected_buffer, 0xab, sizeof(expected_buffer));
Seq(400, 2, expected_buffer);
EXPECT_EQ(0, memcmp(buffer, expected_buffer, sizeof(buffer)));
// Discard the remaining element.
num_bytes = 1u * sizeof(int32_t);
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), true));
EXPECT_EQ(1u * sizeof(int32_t), num_bytes);
// Empty again.
num_bytes = ~0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
this->ConsumerClose();
}
// Tests that |ProducerWriteData()| and |ConsumerReadData()| writes and reads,
// respectively, as much as possible, even if it may have to "wrap around" the
// internal circular buffer. (Note that the two-phase write and read need not do
// this.)
TYPED_TEST(DataPipeImplTest, WrapAround) {
unsigned char test_data[1000];
for (size_t i = 0; i < MOJO_ARRAYSIZE(test_data); i++)
test_data[i] = static_cast<unsigned char>(i);
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
100u // |capacity_num_bytes|.
};
MojoCreateDataPipeOptions validated_options = {};
// This test won't be valid if |ValidateCreateOptions()| decides to give the
// pipe more space.
EXPECT_EQ(MOJO_RESULT_OK, DataPipe::ValidateCreateOptions(
MakeUserPointer(&options), &validated_options));
ASSERT_EQ(100u, validated_options.capacity_num_bytes);
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 1,
nullptr));
// Write 20 bytes.
uint32_t num_bytes = 20u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(&test_data[0]),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(20u, num_bytes);
// Wait for data.
// TODO(vtl): (See corresponding TODO in AllOrNone.)
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read 10 bytes.
unsigned char read_buffer[1000] = {0};
num_bytes = 10u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(read_buffer),
MakeUserPointer(&num_bytes), false, false));
EXPECT_EQ(10u, num_bytes);
EXPECT_EQ(0, memcmp(read_buffer, &test_data[0], 10u));
if (this->IsStrictCircularBuffer()) {
// Check that a two-phase write can now only write (at most) 80 bytes. (This
// checks an implementation detail; this behavior is not guaranteed.)
void* write_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(write_buffer_ptr);
EXPECT_EQ(80u, num_bytes);
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(0u));
}
// TODO(vtl): (See corresponding TODO in TwoPhaseAllOrNone.)
size_t total_num_bytes = 0u;
for (size_t i = 0; i < kMaxPoll; i++) {
// Write as much data as we can (using |ProducerWriteData()|). We should
// write 90 bytes (eventually).
num_bytes = 200u;
MojoResult result = this->ProducerWriteData(
UserPointer<const void>(&test_data[20 + total_num_bytes]),
MakeUserPointer(&num_bytes), false);
if (result == MOJO_RESULT_OK) {
total_num_bytes += num_bytes;
if (total_num_bytes >= 90u)
break;
} else {
EXPECT_EQ(MOJO_RESULT_OUT_OF_RANGE, result);
}
ThreadSleep(test::EpsilonTimeout());
}
EXPECT_EQ(90u, total_num_bytes);
// TODO(vtl): (See corresponding TODO in TwoPhaseAllOrNone.)
for (size_t i = 0; i < kMaxPoll; i++) {
// We have 100.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
if (num_bytes >= 100u)
break;
ThreadSleep(test::EpsilonTimeout());
}
EXPECT_EQ(100u, num_bytes);
if (this->IsStrictCircularBuffer()) {
// Check that a two-phase read can now only read (at most) 90 bytes. (This
// checks an implementation detail; this behavior is not guaranteed.)
const void* read_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer_ptr);
EXPECT_EQ(90u, num_bytes);
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(0u));
}
// Read as much as possible (using |ConsumerReadData()|). We should read 100
// bytes.
num_bytes = static_cast<uint32_t>(MOJO_ARRAYSIZE(read_buffer) *
sizeof(read_buffer[0]));
memset(read_buffer, 0, num_bytes);
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(read_buffer),
MakeUserPointer(&num_bytes), false, false));
EXPECT_EQ(100u, num_bytes);
EXPECT_EQ(0, memcmp(read_buffer, &test_data[10], 100u));
this->ProducerClose();
this->ConsumerClose();
}
// Tests the behavior of writing (simple and two-phase), closing the producer,
// then reading (simple and two-phase).
TYPED_TEST(DataPipeImplTest, WriteCloseProducerRead) {
const char kTestData[] = "hello world";
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
1000u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
// Write some data, so we'll have something to read.
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Write it again, so we'll have something left over.
num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Start two-phase write.
void* write_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(write_buffer_ptr);
EXPECT_GT(num_bytes, 0u);
// TODO(vtl): (See corresponding TODO in TwoPhaseAllOrNone.)
for (size_t i = 0; i < kMaxPoll; i++) {
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
if (num_bytes >= 2u * kTestDataSize)
break;
ThreadSleep(test::EpsilonTimeout());
}
EXPECT_EQ(2u * kTestDataSize, num_bytes);
// Start two-phase read.
const void* read_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer_ptr);
EXPECT_EQ(2u * kTestDataSize, num_bytes);
// Close the producer.
this->ProducerClose();
// The consumer can finish its two-phase read.
EXPECT_EQ(0, memcmp(read_buffer_ptr, kTestData, kTestDataSize));
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(kTestDataSize));
// And start another.
read_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer_ptr);
EXPECT_EQ(kTestDataSize, num_bytes);
// Close the consumer, which cancels the two-phase read.
this->ConsumerClose();
}
// Tests the behavior of interrupting a two-phase read and write by closing the
// consumer.
TYPED_TEST(DataPipeImplTest, TwoPhaseWriteReadCloseConsumer) {
const char kTestData[] = "hello world";
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
1000u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 1,
nullptr));
// Write some data, so we'll have something to read.
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Start two-phase write.
void* write_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(write_buffer_ptr);
ASSERT_GT(num_bytes, kTestDataSize);
// Wait for data.
// TODO(vtl): (See corresponding TODO in AllOrNone.)
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Start two-phase read.
const void* read_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(read_buffer_ptr);
EXPECT_EQ(kTestDataSize, num_bytes);
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
1, nullptr));
// Close the consumer.
this->ConsumerClose();
// Wait for producer to know that the consumer is closed.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
// Actually write some data. (Note: Premature freeing of the buffer would
// probably only be detected under ASAN or similar.)
memcpy(write_buffer_ptr, kTestData, kTestDataSize);
// Note: Even though the consumer has been closed, ending the two-phase
// write will report success.
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(kTestDataSize));
// But trying to write should result in failure.
num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
// As will trying to start another two-phase write.
write_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ProducerBeginWriteData(MakeUserPointer(&write_buffer_ptr),
MakeUserPointer(&num_bytes)));
this->ProducerClose();
}
// Tests the behavior of "interrupting" a two-phase write by closing both the
// producer and the consumer.
TYPED_TEST(DataPipeImplTest, TwoPhaseWriteCloseBoth) {
const uint32_t kTestDataSize = 15u;
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
1000u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
// Start two-phase write.
void* write_buffer_ptr = nullptr;
uint32_t num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_TRUE(write_buffer_ptr);
ASSERT_GT(num_bytes, kTestDataSize);
this->ConsumerClose();
this->ProducerClose();
}
// Tests the behavior of writing, closing the producer, and then reading (with
// and without data remaining).
TYPED_TEST(DataPipeImplTest, WriteCloseProducerReadNoData) {
const char kTestData[] = "hello world";
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
1000u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// Write some data, so we'll have something to read.
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
1, nullptr));
// Close the producer.
this->ProducerClose();
// Wait. (Note that once the consumer knows that the producer is closed, it
// must also know about all the data that was sent.)
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Peek that data.
char buffer[1000];
num_bytes = static_cast<uint32_t>(sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), false, true));
EXPECT_EQ(kTestDataSize, num_bytes);
EXPECT_EQ(0, memcmp(buffer, kTestData, kTestDataSize));
// Read that data.
memset(buffer, 0, 1000);
num_bytes = static_cast<uint32_t>(sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), false, false));
EXPECT_EQ(kTestDataSize, num_bytes);
EXPECT_EQ(0, memcmp(buffer, kTestData, kTestDataSize));
// A second read should fail.
num_bytes = static_cast<uint32_t>(sizeof(buffer));
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerReadData(UserPointer<void>(buffer),
MakeUserPointer(&num_bytes), false, false));
// A two-phase read should also fail.
const void* read_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer_ptr),
MakeUserPointer(&num_bytes)));
// Ditto for discard.
num_bytes = 10u;
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerDiscardData(MakeUserPointer(&num_bytes), false));
this->ConsumerClose();
}
// Tests the behavior of writing, reading (all the data), closing the producer,
// and then waiting for more data (with no data remaining).
TYPED_TEST(DataPipeImplTest, WriteReadCloseProducerWaitNoData) {
const int64_t kTestData = 123456789012345LL;
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
kTestDataSize, // |element_num_bytes|.
100u * kTestDataSize // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 0,
nullptr));
// Write some data, so we'll have something to read.
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(&kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Wait.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read that data.
int64_t data[10] = {};
num_bytes = static_cast<uint32_t>(sizeof(data));
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(data),
MakeUserPointer(&num_bytes), false, false));
EXPECT_EQ(kTestDataSize, num_bytes);
EXPECT_EQ(kTestData, data[0]);
// Add waiter again.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 0,
nullptr));
// Close the producer.
this->ProducerClose();
// Wait.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ConsumerClose();
}
// During a two-phase read, the consumer is not readable so it may be waited
// upon (to become readable again). If the producer is closed and the two-phase
// read consumes the remaining data, that wait should become unsatisfiable.
TYPED_TEST(DataPipeImplTest, BeginReadCloseProducerWaitEndReadNoData) {
const int64_t kTestData = 123456789012345LL;
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
kTestDataSize, // |element_num_bytes|.
100u * kTestDataSize // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// Add waiter (for the consumer to become readable).
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 0,
nullptr));
// Write some data, so we'll have something to read.
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(&kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Wait.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Start a two-phase read.
num_bytes = 0u;
const void* read_ptr = nullptr;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_EQ(kTestDataSize, num_bytes);
EXPECT_EQ(kTestData, static_cast<const int64_t*>(read_ptr)[0]);
// Add waiter (for the producer to be closed).
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
0, nullptr));
// Close the producer.
this->ProducerClose();
// Wait for producer close to be detected.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Add waiter (for the consumer to become readable).
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 0,
nullptr));
// Complete the two-phase read.
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(kTestDataSize));
// Wait.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ConsumerClose();
}
// During a two-phase write, the producer is not writable so it may be waited
// upon (to become writable again). If the consumer is closed, that wait should
// become unsatisfiable.
TYPED_TEST(DataPipeImplTest, BeginWriteCloseConsumerWaitEndWrite) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
100u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter1;
Waiter waiter2;
HandleSignalsState hss;
// Start a two-phase write.
void* write_ptr = nullptr;
uint32_t num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_ptr),
MakeUserPointer(&num_bytes)));
// Add waiter (for the consumer to be closed).
waiter1.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&waiter1, MOJO_HANDLE_SIGNAL_PEER_CLOSED,
0, nullptr));
// Add a separate waiter (for the producer to become writable).
waiter2.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ProducerAddAwakable(&waiter2, MOJO_HANDLE_SIGNAL_WRITABLE, 0,
nullptr));
// Close the consumer.
this->ConsumerClose();
// Wait for the consumer close to be detected.
// Note: If we didn't wait for the consumer close to be detected before
// completing the two-phase write, wait might succeed (in the remote cases).
// This is because the first |Awake()| "wins".
EXPECT_EQ(MOJO_RESULT_OK, waiter1.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&waiter1, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
// Complete the two-phase write (with nothing written).
EXPECT_EQ(MOJO_RESULT_OK, this->ProducerEndWriteData(0u));
// Wait.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
waiter2.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ProducerRemoveAwakable(&waiter2, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ProducerClose();
}
// Test that two-phase reads/writes behave correctly when given invalid
// arguments.
TYPED_TEST(DataPipeImplTest, TwoPhaseMoreInvalidArguments) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
static_cast<uint32_t>(sizeof(int32_t)), // |element_num_bytes|.
10 * sizeof(int32_t) // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
Waiter waiter;
HandleSignalsState hss;
// No data.
uint32_t num_bytes = 1000u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
// Try "ending" a two-phase write when one isn't active.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ProducerEndWriteData(1u * sizeof(int32_t)));
// Wait a bit, to make sure that if a signal were (incorrectly) sent, it'd
// have time to propagate.
ThreadSleep(test::EpsilonTimeout());
// Still no data.
num_bytes = 1000u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
// Try ending a two-phase write with an invalid amount (too much).
void* write_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
this->ProducerEndWriteData(num_bytes +
static_cast<uint32_t>(sizeof(int32_t))));
// But the two-phase write still ended.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, this->ProducerEndWriteData(0u));
// Wait a bit (as above).
ThreadSleep(test::EpsilonTimeout());
// Still no data.
num_bytes = 1000u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
// Try ending a two-phase write with an invalid amount (not a multiple of the
// element size).
write_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerBeginWriteData(MakeUserPointer(&write_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_GE(num_bytes, 1u);
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, this->ProducerEndWriteData(1u));
// But the two-phase write still ended.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION, this->ProducerEndWriteData(0u));
// Wait a bit (as above).
ThreadSleep(test::EpsilonTimeout());
// Still no data.
num_bytes = 1000u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(0u, num_bytes);
// Add waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(&waiter, MOJO_HANDLE_SIGNAL_READABLE, 1,
nullptr));
// Now write some data, so we'll be able to try reading.
int32_t element = 123;
num_bytes = 1u * sizeof(int32_t);
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(&element),
MakeUserPointer(&num_bytes), false));
// Wait for data.
// TODO(vtl): (See corresponding TODO in AllOrNone.)
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// One element available.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(1u * sizeof(int32_t), num_bytes);
// Try "ending" a two-phase read when one isn't active.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerEndReadData(1u * sizeof(int32_t)));
// Still one element available.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(1u * sizeof(int32_t), num_bytes);
// Try ending a two-phase read with an invalid amount (too much).
num_bytes = 0u;
const void* read_ptr = nullptr;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
this->ConsumerEndReadData(num_bytes +
static_cast<uint32_t>(sizeof(int32_t))));
// Still one element available.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(1u * sizeof(int32_t), num_bytes);
// Try ending a two-phase read with an invalid amount (not a multiple of the
// element size).
num_bytes = 0u;
read_ptr = nullptr;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_EQ(1u * sizeof(int32_t), num_bytes);
EXPECT_EQ(123, static_cast<const int32_t*>(read_ptr)[0]);
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, this->ConsumerEndReadData(1u));
// Still one element available.
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
EXPECT_EQ(1u * sizeof(int32_t), num_bytes);
this->ProducerClose();
this->ConsumerClose();
}
// Tests the behavior of writing, closing the producer, and then doing a
// two-phase read of all the data.
// Note: If this test fails/crashes flakily, this is almost certainly an
// indication of a problem in the implementation and not the test.
TYPED_TEST(DataPipeImplTest, WriteCloseProducerTwoPhaseReadAllData) {
const char kTestData[] = "hello world";
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
1000u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
// Write some data, so we'll have something to read.
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// TODO(vtl): Hack: We can't currently wait for a specified amount of data to
// be available, so poll.
for (size_t i = 0; i < kMaxPoll; i++) {
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerQueryData(MakeUserPointer(&num_bytes)));
if (num_bytes >= kTestDataSize)
break;
ThreadSleep(test::EpsilonTimeout());
}
EXPECT_EQ(kTestDataSize, num_bytes);
const void* read_buffer_ptr = nullptr;
num_bytes = 0u;
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerBeginReadData(MakeUserPointer(&read_buffer_ptr),
MakeUserPointer(&num_bytes)));
EXPECT_EQ(kTestDataSize, num_bytes);
EXPECT_EQ(0, memcmp(read_buffer_ptr, kTestData, kTestDataSize));
// Close the producer.
this->ProducerClose();
// Note: This tiny sleep is to allow/encourage a certain race. In particular,
// for the remote producer case in
// |RemoteProducerDataPipeImpl::MarkDataAsConsumed()| (caused by
// |ConsumerEndReadData()| below) we want |producer_open()| to be false but
// the call to |channel_endpoint_->EnqueueMessage()| to fail. (This race can
// occur without the sleep, but is much less likely.)
ThreadSleep(10u);
EXPECT_EQ(MOJO_RESULT_OK, this->ConsumerEndReadData(num_bytes));
this->ConsumerClose();
}
TYPED_TEST(DataPipeImplTest, ReadThreshold) {
const MojoCreateDataPipeOptions options = {
kSizeOfOptions, // |struct_size|.
MOJO_CREATE_DATA_PIPE_OPTIONS_FLAG_NONE, // |flags|.
1u, // |element_num_bytes|.
1000u // |capacity_num_bytes|.
};
this->Create(options);
this->DoTransfer();
// The default read threshold should be 0 (which means "default", i.e., one
// element).
uint32_t read_threshold_num_bytes = 123u;
this->ConsumerGetOptions(&read_threshold_num_bytes);
EXPECT_EQ(0u, read_threshold_num_bytes);
Waiter waiter;
HandleSignalsState hss;
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, nullptr));
// Trivial wait: it shouldn't have the read threshold signal.
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, waiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(0u, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, nullptr));
// Write a byte.
const char kTestData[] = {'x'};
const uint32_t kTestDataSize = static_cast<uint32_t>(sizeof(kTestData));
uint32_t num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Wait for the read threshold signal.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Set the read threshold to 1.
this->ConsumerSetOptions(1);
read_threshold_num_bytes = 123u;
this->ConsumerGetOptions(&read_threshold_num_bytes);
EXPECT_EQ(1u, read_threshold_num_bytes);
// Try to add a waiter: it should (still) already have the read threshold
// signal.
waiter.Init();
hss = HandleSignalsState();
ASSERT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, &hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Set the read threshold to 2.
this->ConsumerSetOptions(2);
read_threshold_num_bytes = 123u;
this->ConsumerGetOptions(&read_threshold_num_bytes);
EXPECT_EQ(2u, read_threshold_num_bytes);
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, nullptr));
// Write another byte.
num_bytes = kTestDataSize;
EXPECT_EQ(MOJO_RESULT_OK,
this->ProducerWriteData(UserPointer<const void>(kTestData),
MakeUserPointer(&num_bytes), false));
EXPECT_EQ(kTestDataSize, num_bytes);
// Wait for the read threshold signal.
EXPECT_EQ(MOJO_RESULT_OK, waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read one byte.
char read_byte = 'a';
num_bytes = sizeof(read_byte);
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(&read_byte),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(1u, num_bytes);
EXPECT_EQ(kTestData[0], read_byte);
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, nullptr));
// Trivial wait: it shouldn't have the read threshold signal.
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, waiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, nullptr));
// Trivial wait: it shouldn't have the read threshold signal.
EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, waiter.Wait(0, nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Add a waiter.
waiter.Init();
ASSERT_EQ(MOJO_RESULT_OK,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, nullptr));
// Close the producer.
this->ProducerClose();
// Wait; the current read threshold becomes never satisfiable.
EXPECT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
waiter.Wait(test::TinyTimeout(), nullptr));
hss = HandleSignalsState();
this->ConsumerRemoveAwakable(&waiter, &hss);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED,
hss.satisfiable_signals);
// Set the read threshold back to zero to 0.
this->ConsumerSetOptions(0);
read_threshold_num_bytes = 123u;
this->ConsumerGetOptions(&read_threshold_num_bytes);
// "Get options" should preserve 0 (and not set it to the element size).
EXPECT_EQ(0u, read_threshold_num_bytes);
// Try to add a waiter: it should have the read threshold signal.
waiter.Init();
hss = HandleSignalsState();
ASSERT_EQ(MOJO_RESULT_ALREADY_EXISTS,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, &hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_READ_THRESHOLD,
hss.satisfiable_signals);
// Read the other byte.
read_byte = 'a';
num_bytes = sizeof(read_byte);
EXPECT_EQ(MOJO_RESULT_OK,
this->ConsumerReadData(UserPointer<void>(&read_byte),
MakeUserPointer(&num_bytes), true, false));
EXPECT_EQ(1u, num_bytes);
EXPECT_EQ(kTestData[0], read_byte);
// Try to add a waiter: the read threshold signal should be unsatisfiable.
waiter.Init();
hss = HandleSignalsState();
ASSERT_EQ(MOJO_RESULT_FAILED_PRECONDITION,
this->ConsumerAddAwakable(
&waiter, MOJO_HANDLE_SIGNAL_READ_THRESHOLD, 0, &hss));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, hss.satisfiable_signals);
this->ConsumerClose();
}
} // namespace
} // namespace system
} // namespace mojo