Mac: Fix the "no autorelease pool in place" error by initializing an NSAutoreleasePool on every thread (issue #502).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@482 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/cef_process_io_thread.cc

@@ -33,10 +33,7 @@ CefProcessIOThread::~CefProcessIOThread() {
 }
 
 void CefProcessIOThread::Init() {
-#if defined(OS_WIN)
-  // Initializes the COM library on the current thread.
-  CoInitialize(NULL);
-#endif
+  CefThread::Init();
 
   FilePath cache_path(_Context->cache_path());
   request_context_ = new BrowserRequestContext(cache_path,
@@ -65,9 +62,5 @@ void CefProcessIOThread::CleanUp() {
   _Context->set_request_context(NULL);
   request_context_ = NULL;
 
-#if defined(OS_WIN)
-  // Closes the COM library on the current thread. CoInitialize must
-  // be balanced by a corresponding call to CoUninitialize.
-  CoUninitialize();
-#endif
+  CefThread::Cleanup();
 }

libcef/cef_process_io_thread.h

@@ -27,14 +27,14 @@ class CefProcessIOThread : public CefThread {
   explicit CefProcessIOThread(MessageLoop* message_loop);
   virtual ~CefProcessIOThread();
 
-  virtual void Init();
-  virtual void CleanUp();
-
   scoped_refptr<BrowserRequestContext> request_context() {
     return request_context_;
   }
 
- private:
+ protected:
+  virtual void Init();
+  virtual void CleanUp();
+
   scoped_refptr<BrowserRequestContext> request_context_;
 
   DISALLOW_COPY_AND_ASSIGN(CefProcessIOThread);

libcef/cef_process_sub_thread.cc

@@ -8,10 +8,6 @@
 #include "build/build_config.h"
 #include "base/compiler_specific.h"
 
-#if defined(OS_WIN)
-#include <Objbase.h>  // NOLINT(build/include_order)
-#endif
-
 CefProcessSubThread::CefProcessSubThread(CefThread::ID identifier)
       : CefThread(identifier) {}
 
@@ -25,22 +21,11 @@ CefProcessSubThread::~CefProcessSubThread() {
   Stop();
 }
 
-void CefProcessSubThread::Init() {
-#if defined(OS_WIN)
-  // Initializes the COM library on the current thread.
-  CoInitialize(NULL);
-#endif
-}
-
 void CefProcessSubThread::CleanUp() {
   // Flush any remaining messages.  This ensures that any accumulated
   // Task objects get destroyed before we exit, which avoids noise in
   // purify leak-test results.
   MessageLoop::current()->RunAllPending();
 
-#if defined(OS_WIN)
-  // Closes the COM library on the current thread. CoInitialize must
-  // be balanced by a corresponding call to CoUninitialize.
-  CoUninitialize();
-#endif
+  CefThread::Cleanup();
 }

libcef/cef_process_sub_thread.h

@@ -27,7 +27,6 @@ class CefProcessSubThread : public CefThread {
   virtual ~CefProcessSubThread();
 
  protected:
-  virtual void Init();
   virtual void CleanUp();
 
  private:

libcef/cef_process_ui_thread.cc

@@ -4,6 +4,9 @@
 // found in the LICENSE file.
 
 #include "libcef/cef_process_ui_thread.h"
+
+#include <string>
+
 #include "include/cef_version.h"
 #include "libcef/browser_webkit_glue.h"
 #include "libcef/browser_webkit_init.h"

libcef/cef_thread.cc

@@ -9,6 +9,10 @@
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
 
+#if defined(OS_WIN)
+#include <Objbase.h>  // NOLINT(build/include_order)
+#endif
+
 using base::MessageLoopProxy;
 
 // Friendly names for the well-known threads.
@@ -102,6 +106,29 @@ CefThread::CefThread(ID identifier, MessageLoop* message_loop)
   Initialize();
 }
 
+void CefThread::Init() {
+#if defined(OS_WIN)
+  // Initializes the COM library on the current thread.
+  CoInitialize(NULL);
+#endif
+
+#if defined(OS_MACOSX)
+  autorelease_pool_.reset(new base::mac::ScopedNSAutoreleasePool);
+#endif
+}
+
+void CefThread::Cleanup() {
+#if defined(OS_WIN)
+  // Closes the COM library on the current thread. CoInitialize must
+  // be balanced by a corresponding call to CoUninitialize.
+  CoUninitialize();
+#endif
+
+#if defined(OS_MACOSX)
+  autorelease_pool_.reset(NULL);
+#endif
+}
+
 void CefThread::Initialize() {
   base::AutoLock lock(lock_);
   DCHECK(identifier_ >= 0 && identifier_ < ID_COUNT);

libcef/cef_thread.h

@@ -7,10 +7,15 @@
 #define CEF_LIBCEF_CEF_THREAD_H_
 #pragma once
 
+#include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/task.h"
 #include "base/threading/thread.h"
 
+#if defined(OS_MACOSX)
+#include "base/mac/scoped_nsautorelease_pool.h"
+#endif
+
 namespace base {
 class MessageLoopProxy;
 }
@@ -180,6 +185,10 @@ class CefThread : public base::Thread {
   struct DeleteOnIOThread : public DeleteOnThread<IO> { };
   struct DeleteOnFileThread : public DeleteOnThread<FILE> { };
 
+ protected:
+  virtual void Init();
+  virtual void Cleanup();
+
  private:
   // Common initialization code for the constructors.
   void Initialize();
@@ -211,6 +220,10 @@ class CefThread : public base::Thread {
   // on the UI thread by the g_browser_process object.  CefThreads remove
   // themselves from this array upon destruction.
   static CefThread* cef_threads_[ID_COUNT];
+
+#if defined(OS_MACOSX)
+  scoped_ptr<base::mac::ScopedNSAutoreleasePool> autorelease_pool_;
+#endif
 };
 
 #define REQUIRE_UIT() DCHECK(CefThread::CurrentlyOn(CefThread::UI))