gecko-dev/dom/workers/WorkerHolder.cpp

87 строки
1.8 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WorkerHolder.h"
#include "WorkerPrivate.h"
namespace mozilla {
namespace dom {
namespace {
void
AssertOnOwningThread(void* aThread)
{
if (MOZ_UNLIKELY(aThread != GetCurrentVirtualThread())) {
MOZ_CRASH_UNSAFE_OOL("WorkerHolder on the wrong thread.");
}
}
} // anonymous
WorkerHolder::WorkerHolder(const char* aName, Behavior aBehavior)
: mWorkerPrivate(nullptr)
, mBehavior(aBehavior)
, mThread(GetCurrentVirtualThread())
, mName(aName)
{
}
WorkerHolder::~WorkerHolder()
{
AssertOnOwningThread(mThread);
ReleaseWorkerInternal();
MOZ_ASSERT(mWorkerPrivate == nullptr);
}
bool
WorkerHolder::HoldWorker(WorkerPrivate* aWorkerPrivate,
WorkerStatus aFailStatus)
{
AssertOnOwningThread(mThread);
MOZ_ASSERT(aWorkerPrivate);
MOZ_ASSERT(aFailStatus >= Canceling);
aWorkerPrivate->AssertIsOnWorkerThread();
if (!aWorkerPrivate->AddHolder(this, aFailStatus)) {
return false;
}
mWorkerPrivate = aWorkerPrivate;
return true;
}
void
WorkerHolder::ReleaseWorker()
{
AssertOnOwningThread(mThread);
MOZ_ASSERT(mWorkerPrivate);
ReleaseWorkerInternal();
}
WorkerHolder::Behavior
WorkerHolder::GetBehavior() const
{
return mBehavior;
}
void
WorkerHolder::ReleaseWorkerInternal()
{
AssertOnOwningThread(mThread);
if (mWorkerPrivate) {
mWorkerPrivate->AssertIsOnWorkerThread();
mWorkerPrivate->RemoveHolder(this);
mWorkerPrivate = nullptr;
}
}
} // dom namespace
} // mozilla namespace