Refactor ChildProcess and related classes to create a framework outside of br...

chrome/common/child_process.cc

Index: chrome/common/child_process.cc
===================================================================
--- chrome/common/child_process.cc	(revision 44239)
+++ chrome/common/child_process.cc	(working copy)
@@ -8,66 +8,16 @@
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
-#include "chrome/common/child_thread.h"
 #include "grit/chromium_strings.h"
 
-#if defined(OS_POSIX)
-#include <signal.h>
-
-static void SigUSR1Handler(int signal) { }
-#endif
-
-ChildProcess* ChildProcess::child_process_;
-
 ChildProcess::ChildProcess()
-    : ref_count_(0),
-      shutdown_event_(true, false),
-      io_thread_("Chrome_ChildIOThread") {
-  DCHECK(!child_process_);
-  child_process_ = this;
-
+    : io_thread_("Chrome_ChildIOThread") {
   io_thread_.StartWithOptions(base::Thread::Options(MessageLoop::TYPE_IO, 0));
 }
 
 ChildProcess::~ChildProcess() {
-  DCHECK(child_process_ == this);
-
-  // Signal this event before destroying the child process.  That way all
-  // background threads can cleanup.
-  // For example, in the renderer the RenderThread instances will be able to
-  // notice shutdown before the render process begins waiting for them to exit.
-  shutdown_event_.Signal();
-
-  // Kill the main thread object before nulling child_process_, since
-  // destruction code might depend on it.
-  main_thread_.reset();
-
-  child_process_ = NULL;
 }
 
-void ChildProcess::AddRefProcess() {
-  DCHECK(!main_thread_.get() ||  // null in unittests.
-         MessageLoop::current() == main_thread_->message_loop());
-  ref_count_++;
-}
-
-void ChildProcess::ReleaseProcess() {
-  DCHECK(!main_thread_.get() ||  // null in unittests.
-         MessageLoop::current() == main_thread_->message_loop());
-  DCHECK(ref_count_);
-  DCHECK(child_process_);
-  if (--ref_count_)
-    return;
-
-  if (main_thread_.get())  // null in unittests.
-    main_thread_->OnProcessFinalRelease();
-}
-
-base::WaitableEvent* ChildProcess::GetShutDownEvent() {
-  DCHECK(child_process_);
-  return &child_process_->shutdown_event_;
-}
-
 void ChildProcess::WaitForDebugger(const std::wstring& label) {
 #if defined(OS_WIN)
     std::wstring title = l10n_util::GetString(IDS_PRODUCT_NAME);