Clone of chromium aad1ce808763f59c7a3753e08f1500a104ecc6fd refs/remotes/origin/HEAD
diff --git a/base/process/kill_win.cc b/base/process/kill_win.cc
new file mode 100644
index 0000000..f5fb859
--- /dev/null
+++ b/base/process/kill_win.cc
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+// Copyright (c) 2013 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 "base/process/kill.h"
+
+#include <io.h>
+#include <windows.h>
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/logging.h"
+#include "base/message_loop/message_loop.h"
+#include "base/process/process_iterator.h"
+#include "base/profiler/scoped_profile.h"
+#include "base/win/object_watcher.h"
+
+namespace base {
+
+namespace {
+
+// Exit codes with special meanings on Windows.
+const DWORD kNormalTerminationExitCode = 0;
+const DWORD kDebuggerInactiveExitCode = 0xC0000354;
+const DWORD kKeyboardInterruptExitCode = 0xC000013A;
+const DWORD kDebuggerTerminatedExitCode = 0x40010004;
+
+// This exit code is used by the Windows task manager when it kills a
+// process. It's value is obviously not that unique, and it's
+// surprising to me that the task manager uses this value, but it
+// seems to be common practice on Windows to test for it as an
+// indication that the task manager has killed something if the
+// process goes away.
+const DWORD kProcessKilledExitCode = 1;
+
+// Maximum amount of time (in milliseconds) to wait for the process to exit.
+static const int kWaitInterval = 2000;
+
+class TimerExpiredTask : public win::ObjectWatcher::Delegate {
+ public:
+ explicit TimerExpiredTask(ProcessHandle process);
+ ~TimerExpiredTask();
+
+ void TimedOut();
+
+ // MessageLoop::Watcher -----------------------------------------------------
+ virtual void OnObjectSignaled(HANDLE object);
+
+ private:
+ void KillProcess();
+
+ // The process that we are watching.
+ ProcessHandle process_;
+
+ win::ObjectWatcher watcher_;
+
+ DISALLOW_COPY_AND_ASSIGN(TimerExpiredTask);
+};
+
+TimerExpiredTask::TimerExpiredTask(ProcessHandle process) : process_(process) {
+ watcher_.StartWatching(process_, this);
+}
+
+TimerExpiredTask::~TimerExpiredTask() {
+ TimedOut();
+ DCHECK(!process_) << "Make sure to close the handle.";
+}
+
+void TimerExpiredTask::TimedOut() {
+ if (process_)
+ KillProcess();
+}
+
+void TimerExpiredTask::OnObjectSignaled(HANDLE object) {
+ // TODO(vadimt): Remove ScopedProfile below once crbug.com/418183 is fixed.
+ tracked_objects::ScopedProfile tracking_profile(
+ FROM_HERE_WITH_EXPLICIT_FUNCTION(
+ "TimerExpiredTask_OnObjectSignaled"));
+
+ CloseHandle(process_);
+ process_ = NULL;
+}
+
+void TimerExpiredTask::KillProcess() {
+ // Stop watching the process handle since we're killing it.
+ watcher_.StopWatching();
+
+ // OK, time to get frisky. We don't actually care when the process
+ // terminates. We just care that it eventually terminates, and that's what
+ // TerminateProcess should do for us. Don't check for the result code since
+ // it fails quite often. This should be investigated eventually.
+ base::KillProcess(process_, kProcessKilledExitCode, false);
+
+ // Now, just cleanup as if the process exited normally.
+ OnObjectSignaled(process_);
+}
+
+} // namespace
+
+bool KillProcess(ProcessHandle process, int exit_code, bool wait) {
+ bool result = (TerminateProcess(process, exit_code) != FALSE);
+ if (result && wait) {
+ // The process may not end immediately due to pending I/O
+ if (WAIT_OBJECT_0 != WaitForSingleObject(process, 60 * 1000))
+ DPLOG(ERROR) << "Error waiting for process exit";
+ } else if (!result) {
+ DPLOG(ERROR) << "Unable to terminate process";
+ }
+ return result;
+}
+
+// Attempts to kill the process identified by the given process
+// entry structure, giving it the specified exit code.
+// Returns true if this is successful, false otherwise.
+bool KillProcessById(ProcessId process_id, int exit_code, bool wait) {
+ HANDLE process = OpenProcess(PROCESS_TERMINATE | SYNCHRONIZE,
+ FALSE, // Don't inherit handle
+ process_id);
+ if (!process) {
+ DPLOG(ERROR) << "Unable to open process " << process_id;
+ return false;
+ }
+ bool ret = KillProcess(process, exit_code, wait);
+ CloseHandle(process);
+ return ret;
+}
+
+TerminationStatus GetTerminationStatus(ProcessHandle handle, int* exit_code) {
+ DWORD tmp_exit_code = 0;
+
+ if (!::GetExitCodeProcess(handle, &tmp_exit_code)) {
+ DPLOG(FATAL) << "GetExitCodeProcess() failed";
+ if (exit_code) {
+ // This really is a random number. We haven't received any
+ // information about the exit code, presumably because this
+ // process doesn't have permission to get the exit code, or
+ // because of some other cause for GetExitCodeProcess to fail
+ // (MSDN docs don't give the possible failure error codes for
+ // this function, so it could be anything). But we don't want
+ // to leave exit_code uninitialized, since that could cause
+ // random interpretations of the exit code. So we assume it
+ // terminated "normally" in this case.
+ *exit_code = kNormalTerminationExitCode;
+ }
+ // Assume the child has exited normally if we can't get the exit
+ // code.
+ return TERMINATION_STATUS_NORMAL_TERMINATION;
+ }
+ if (tmp_exit_code == STILL_ACTIVE) {
+ DWORD wait_result = WaitForSingleObject(handle, 0);
+ if (wait_result == WAIT_TIMEOUT) {
+ if (exit_code)
+ *exit_code = wait_result;
+ return TERMINATION_STATUS_STILL_RUNNING;
+ }
+
+ if (wait_result == WAIT_FAILED) {
+ DPLOG(ERROR) << "WaitForSingleObject() failed";
+ } else {
+ DCHECK_EQ(WAIT_OBJECT_0, wait_result);
+
+ // Strange, the process used 0x103 (STILL_ACTIVE) as exit code.
+ NOTREACHED();
+ }
+
+ return TERMINATION_STATUS_ABNORMAL_TERMINATION;
+ }
+
+ if (exit_code)
+ *exit_code = tmp_exit_code;
+
+ switch (tmp_exit_code) {
+ case kNormalTerminationExitCode:
+ return TERMINATION_STATUS_NORMAL_TERMINATION;
+ case kDebuggerInactiveExitCode: // STATUS_DEBUGGER_INACTIVE.
+ case kKeyboardInterruptExitCode: // Control-C/end session.
+ case kDebuggerTerminatedExitCode: // Debugger terminated process.
+ case kProcessKilledExitCode: // Task manager kill.
+ return TERMINATION_STATUS_PROCESS_WAS_KILLED;
+ default:
+ // All other exit codes indicate crashes.
+ return TERMINATION_STATUS_PROCESS_CRASHED;
+ }
+}
+
+bool WaitForExitCode(ProcessHandle handle, int* exit_code) {
+ bool success = WaitForExitCodeWithTimeout(
+ handle, exit_code, base::TimeDelta::FromMilliseconds(INFINITE));
+ CloseProcessHandle(handle);
+ return success;
+}
+
+bool WaitForExitCodeWithTimeout(ProcessHandle handle,
+ int* exit_code,
+ base::TimeDelta timeout) {
+ if (::WaitForSingleObject(
+ handle, static_cast<DWORD>(timeout.InMilliseconds())) != WAIT_OBJECT_0)
+ return false;
+ DWORD temp_code; // Don't clobber out-parameters in case of failure.
+ if (!::GetExitCodeProcess(handle, &temp_code))
+ return false;
+
+ *exit_code = temp_code;
+ return true;
+}
+
+bool WaitForProcessesToExit(const FilePath::StringType& executable_name,
+ base::TimeDelta wait,
+ const ProcessFilter* filter) {
+ bool result = true;
+ DWORD start_time = GetTickCount();
+
+ NamedProcessIterator iter(executable_name, filter);
+ for (const ProcessEntry* entry = iter.NextProcessEntry(); entry;
+ entry = iter.NextProcessEntry()) {
+ DWORD remaining_wait = static_cast<DWORD>(std::max(
+ static_cast<int64>(0),
+ wait.InMilliseconds() - (GetTickCount() - start_time)));
+ HANDLE process = OpenProcess(SYNCHRONIZE,
+ FALSE,
+ entry->th32ProcessID);
+ DWORD wait_result = WaitForSingleObject(process, remaining_wait);
+ CloseHandle(process);
+ result &= (wait_result == WAIT_OBJECT_0);
+ }
+
+ return result;
+}
+
+bool WaitForSingleProcess(ProcessHandle handle, base::TimeDelta wait) {
+ int exit_code;
+ return WaitForExitCodeWithTimeout(handle, &exit_code, wait) && exit_code == 0;
+}
+
+bool CleanupProcesses(const FilePath::StringType& executable_name,
+ base::TimeDelta wait,
+ int exit_code,
+ const ProcessFilter* filter) {
+ if (WaitForProcessesToExit(executable_name, wait, filter))
+ return true;
+ KillProcesses(executable_name, exit_code, filter);
+ return false;
+}
+
+void EnsureProcessTerminated(ProcessHandle process) {
+ DCHECK(process != GetCurrentProcess());
+
+ // If already signaled, then we are done!
+ if (WaitForSingleObject(process, 0) == WAIT_OBJECT_0) {
+ CloseHandle(process);
+ return;
+ }
+
+ MessageLoop::current()->PostDelayedTask(
+ FROM_HERE,
+ base::Bind(&TimerExpiredTask::TimedOut,
+ base::Owned(new TimerExpiredTask(process))),
+ base::TimeDelta::FromMilliseconds(kWaitInterval));
+}
+
+} // namespace base
