NaCl: create a separate namespace for Mojo handles.
BUG=401761
R=viettrungluu@chromium.org
Review URL: https://codereview.chromium.org/1052723003
diff --git a/mojo/edk/embedder/system_impl_private_entrypoints.cc b/mojo/edk/embedder/system_impl_private_entrypoints.cc
new file mode 100644
index 0000000..475ffa7
--- /dev/null
+++ b/mojo/edk/embedder/system_impl_private_entrypoints.cc
@@ -0,0 +1,260 @@
+// 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.
+
+#include "mojo/edk/embedder/embedder_internal.h"
+#include "mojo/edk/system/core.h"
+#include "mojo/edk/system/dispatcher.h"
+#include "mojo/public/c/system/buffer.h"
+#include "mojo/public/c/system/data_pipe.h"
+#include "mojo/public/c/system/functions.h"
+#include "mojo/public/c/system/message_pipe.h"
+#include "mojo/public/platform/native/system_impl_private.h"
+
+using mojo::embedder::internal::g_core;
+using mojo::system::Core;
+using mojo::system::Dispatcher;
+using mojo::system::MakeUserPointer;
+
+// Definitions of the system functions, but with an explicit parameter for the
+// core object rather than using the default singleton. Also includes functions
+// for manipulating core objects.
+extern "C" {
+
+MojoSystemImpl MojoSystemImplGetDefaultImpl() {
+ return static_cast<MojoSystemImpl>(g_core);
+}
+
+MojoSystemImpl MojoSystemImplCreateImpl() {
+ Core* created_core = new Core(g_core->platform_support());
+ return static_cast<MojoSystemImpl>(created_core);
+}
+
+MojoResult MojoSystemImplTransferHandle(MojoSystemImpl from_system,
+ MojoHandle handle,
+ MojoSystemImpl to_system,
+ MojoHandle* result_handle) {
+ Core* from_core = static_cast<Core*>(from_system);
+ if (from_core == nullptr)
+ return MOJO_RESULT_INVALID_ARGUMENT;
+
+ if (handle == MOJO_HANDLE_INVALID)
+ return MOJO_RESULT_INVALID_ARGUMENT;
+
+ Core* to_core = static_cast<Core*>(to_system);
+ if (to_core == nullptr)
+ return MOJO_RESULT_INVALID_ARGUMENT;
+
+ if (result_handle == nullptr)
+ return MOJO_RESULT_INVALID_ARGUMENT;
+
+ scoped_refptr<Dispatcher> d;
+ MojoResult result = from_core->GetAndRemoveDispatcher(handle, &d);
+ if (result != MOJO_RESULT_OK)
+ return result;
+
+ MojoHandle created_handle = to_core->AddDispatcher(d);
+ if (created_handle == MOJO_HANDLE_INVALID) {
+ // The handle has been lost, unfortunately. There's no guarentee we can put
+ // it back where it came from, or get the original ID back. Holding locks
+ // for multiple cores risks deadlock, so that isn't a solution. This case
+ // should not happen for reasonable uses of this API, however.
+ LOG(ERROR) << "Could not transfer handle";
+ d->Close();
+ return MOJO_RESULT_RESOURCE_EXHAUSTED;
+ }
+
+ MakeUserPointer(result_handle).Put(created_handle);
+ return MOJO_RESULT_OK;
+}
+
+MojoTimeTicks MojoSystemImplGetTimeTicksNow(MojoSystemImpl system) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->GetTimeTicksNow();
+}
+
+MojoResult MojoSystemImplClose(MojoSystemImpl system, MojoHandle handle) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->Close(handle);
+}
+
+MojoResult MojoSystemImplWait(MojoSystemImpl system,
+ MojoHandle handle,
+ MojoHandleSignals signals,
+ MojoDeadline deadline,
+ MojoHandleSignalsState* signals_state) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->Wait(handle, signals, deadline, MakeUserPointer(signals_state));
+}
+
+MojoResult MojoSystemImplWaitMany(MojoSystemImpl system,
+ const MojoHandle* handles,
+ const MojoHandleSignals* signals,
+ uint32_t num_handles,
+ MojoDeadline deadline,
+ uint32_t* result_index,
+ MojoHandleSignalsState* signals_states) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->WaitMany(MakeUserPointer(handles), MakeUserPointer(signals),
+ num_handles, deadline, MakeUserPointer(result_index),
+ MakeUserPointer(signals_states));
+}
+
+MojoResult MojoSystemImplCreateMessagePipe(
+ MojoSystemImpl system,
+ const MojoCreateMessagePipeOptions* options,
+ MojoHandle* message_pipe_handle0,
+ MojoHandle* message_pipe_handle1) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->CreateMessagePipe(MakeUserPointer(options),
+ MakeUserPointer(message_pipe_handle0),
+ MakeUserPointer(message_pipe_handle1));
+}
+
+MojoResult MojoSystemImplWriteMessage(MojoSystemImpl system,
+ MojoHandle message_pipe_handle,
+ const void* bytes,
+ uint32_t num_bytes,
+ const MojoHandle* handles,
+ uint32_t num_handles,
+ MojoWriteMessageFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->WriteMessage(message_pipe_handle, MakeUserPointer(bytes),
+ num_bytes, MakeUserPointer(handles), num_handles,
+ flags);
+}
+
+MojoResult MojoSystemImplReadMessage(MojoSystemImpl system,
+ MojoHandle message_pipe_handle,
+ void* bytes,
+ uint32_t* num_bytes,
+ MojoHandle* handles,
+ uint32_t* num_handles,
+ MojoReadMessageFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->ReadMessage(message_pipe_handle, MakeUserPointer(bytes),
+ MakeUserPointer(num_bytes), MakeUserPointer(handles),
+ MakeUserPointer(num_handles), flags);
+}
+
+MojoResult MojoSystemImplCreateDataPipe(
+ MojoSystemImpl system,
+ const MojoCreateDataPipeOptions* options,
+ MojoHandle* data_pipe_producer_handle,
+ MojoHandle* data_pipe_consumer_handle) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->CreateDataPipe(MakeUserPointer(options),
+ MakeUserPointer(data_pipe_producer_handle),
+ MakeUserPointer(data_pipe_consumer_handle));
+}
+
+MojoResult MojoSystemImplWriteData(MojoSystemImpl system,
+ MojoHandle data_pipe_producer_handle,
+ const void* elements,
+ uint32_t* num_elements,
+ MojoWriteDataFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->WriteData(data_pipe_producer_handle, MakeUserPointer(elements),
+ MakeUserPointer(num_elements), flags);
+}
+
+MojoResult MojoSystemImplBeginWriteData(MojoSystemImpl system,
+ MojoHandle data_pipe_producer_handle,
+ void** buffer,
+ uint32_t* buffer_num_elements,
+ MojoWriteDataFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->BeginWriteData(data_pipe_producer_handle,
+ MakeUserPointer(buffer),
+ MakeUserPointer(buffer_num_elements), flags);
+}
+
+MojoResult MojoSystemImplEndWriteData(MojoSystemImpl system,
+ MojoHandle data_pipe_producer_handle,
+ uint32_t num_elements_written) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->EndWriteData(data_pipe_producer_handle, num_elements_written);
+}
+
+MojoResult MojoSystemImplReadData(MojoSystemImpl system,
+ MojoHandle data_pipe_consumer_handle,
+ void* elements,
+ uint32_t* num_elements,
+ MojoReadDataFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->ReadData(data_pipe_consumer_handle, MakeUserPointer(elements),
+ MakeUserPointer(num_elements), flags);
+}
+
+MojoResult MojoSystemImplBeginReadData(MojoSystemImpl system,
+ MojoHandle data_pipe_consumer_handle,
+ const void** buffer,
+ uint32_t* buffer_num_elements,
+ MojoReadDataFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->BeginReadData(data_pipe_consumer_handle, MakeUserPointer(buffer),
+ MakeUserPointer(buffer_num_elements), flags);
+}
+
+MojoResult MojoSystemImplEndReadData(MojoSystemImpl system,
+ MojoHandle data_pipe_consumer_handle,
+ uint32_t num_elements_read) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->EndReadData(data_pipe_consumer_handle, num_elements_read);
+}
+
+MojoResult MojoSystemImplCreateSharedBuffer(
+ MojoSystemImpl system,
+ const MojoCreateSharedBufferOptions* options,
+ uint64_t num_bytes,
+ MojoHandle* shared_buffer_handle) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->CreateSharedBuffer(MakeUserPointer(options), num_bytes,
+ MakeUserPointer(shared_buffer_handle));
+}
+
+MojoResult MojoSystemImplDuplicateBufferHandle(
+ MojoSystemImpl system,
+ MojoHandle buffer_handle,
+ const MojoDuplicateBufferHandleOptions* options,
+ MojoHandle* new_buffer_handle) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->DuplicateBufferHandle(buffer_handle, MakeUserPointer(options),
+ MakeUserPointer(new_buffer_handle));
+}
+
+MojoResult MojoSystemImplMapBuffer(MojoSystemImpl system,
+ MojoHandle buffer_handle,
+ uint64_t offset,
+ uint64_t num_bytes,
+ void** buffer,
+ MojoMapBufferFlags flags) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->MapBuffer(buffer_handle, offset, num_bytes,
+ MakeUserPointer(buffer), flags);
+}
+
+MojoResult MojoSystemImplUnmapBuffer(MojoSystemImpl system, void* buffer) {
+ mojo::system::Core* core = static_cast<mojo::system::Core*>(system);
+ DCHECK(core);
+ return core->UnmapBuffer(MakeUserPointer(buffer));
+}
+
+} // extern "C"
