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Support custom V8 bindings on WebWorker threads (issue #451).

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- Add CefRenderProcessHandler callbacks for WebWorker context creation, release and uncaught exceptions.
- Add CefTaskRunner class that supports posting of tasks to standard threads and WebWorker threads.
- Organize V8 internal state information on a per-thread/per-Isolate basis.
- Add webkit_451.patch that provides the WebKit implementation.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@972 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
2013-01-03 17:24:24 +00:00
parent f30fbb3d48
commit afe3cb1d67
44 changed files with 2434 additions and 406 deletions
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35
libcef/renderer/v8_impl.h
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@ -1,4 +1,4 @@
// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
// Copyright (c) 2013 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
@ -15,17 +15,30 @@
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop_proxy.h"
#include "base/sequenced_task_runner.h"
class CefTrackNode;
class GURL;
namespace WebKit {
class WebFrame;
};
// Call to detach all handles associated with the specified contxt.
// Call after a V8 Isolate has been created and entered for the first time.
void CefV8IsolateCreated();
// Call before a V8 Isolate is exited and destroyed.
void CefV8IsolateDestroyed();
// Call to detach all handles associated with the specified context.
void CefV8ReleaseContext(v8::Handle<v8::Context> context);
// Set the stack size for uncaught exceptions.
void CefV8SetUncaughtExceptionStackSize(int stack_size);
// Set attributes associated with a WebWorker thread.
void CefV8SetWorkerAttributes(int worker_id, const GURL& worker_url);
// Used to detach handles when the associated context is released.
class CefV8ContextState : public base::RefCounted<CefV8ContextState> {
public:
@ -60,10 +73,10 @@ class CefV8ContextState : public base::RefCounted<CefV8ContextState> {
struct CefV8DeleteOnMessageLoopThread {
template<typename T>
static void Destruct(const T* x) {
if (x->message_loop_proxy_->BelongsToCurrentThread()) {
if (x->task_runner()->RunsTasksOnCurrentThread()) {
delete x;
} else {
if (!x->message_loop_proxy_->DeleteSoon(FROM_HERE, x)) {
if (!x->task_runner()->DeleteSoon(FROM_HERE, x)) {
#if defined(UNIT_TEST)
// Only logged under unit testing because leaks at shutdown
// are acceptable under normal circumstances.
@ -89,15 +102,17 @@ class CefV8HandleBase :
bool BelongsToCurrentThread() const;
scoped_refptr<base::SequencedTaskRunner> task_runner() const {
return task_runner_;
}
protected:
// |context| is the context that owns this handle. If empty the current
// context will be used.
explicit CefV8HandleBase(v8::Handle<v8::Context> context);
protected:
friend struct CefV8DeleteOnMessageLoopThread;
scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
scoped_refptr<CefV8ContextState> context_state_;
};
@ -141,6 +156,7 @@ class CefV8ContextImpl : public CefV8Context {
explicit CefV8ContextImpl(v8::Handle<v8::Context> context);
virtual ~CefV8ContextImpl();
virtual CefRefPtr<CefTaskRunner> GetTaskRunner() OVERRIDE;
virtual bool IsValid() OVERRIDE;
virtual CefRefPtr<CefBrowser> GetBrowser() OVERRIDE;
virtual CefRefPtr<CefFrame> GetFrame() OVERRIDE;
@ -320,7 +336,4 @@ class CefV8StackFrameImpl : public CefV8StackFrame {
DISALLOW_COPY_AND_ASSIGN(CefV8StackFrameImpl);
};
void CefV8MessageHandler(v8::Handle<v8::Message> message,
v8::Handle<v8::Value> data);
#endif // CEF_LIBCEF_RENDERER_V8_IMPL_H_