1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/shared_impl/thread_aware_callback.h"
#include "base/check.h"
#include "base/functional/callback.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/ppb_message_loop_shared.h"
namespace ppapi {
namespace internal {
class ThreadAwareCallbackBase::Core : public base::RefCountedThreadSafe<Core> {
public:
Core() : aborted_(false) {}
void MarkAsAborted() { aborted_ = true; }
void RunIfNotAborted(base::OnceClosure closure) {
if (!aborted_)
CallWhileUnlocked(std::move(closure));
}
private:
friend class base::RefCountedThreadSafe<Core>;
~Core() {}
bool aborted_;
};
ThreadAwareCallbackBase::ThreadAwareCallbackBase()
: target_loop_(PpapiGlobals::Get()->GetCurrentMessageLoop()),
core_(new Core()) {
DCHECK(target_loop_.get());
}
ThreadAwareCallbackBase::~ThreadAwareCallbackBase() { core_->MarkAsAborted(); }
// static
bool ThreadAwareCallbackBase::HasTargetLoop() {
return !!PpapiGlobals::Get()->GetCurrentMessageLoop();
}
void ThreadAwareCallbackBase::InternalRunOnTargetThread(
base::OnceClosure closure) {
if (target_loop_.get() != PpapiGlobals::Get()->GetCurrentMessageLoop()) {
target_loop_->PostClosure(
FROM_HERE,
RunWhileLocked(
base::BindOnce(&Core::RunIfNotAborted, core_, std::move(closure))),
0);
} else {
CallWhileUnlocked(std::move(closure));
}
}
} // namespace internal
} // namespace ppapi
|
