dom/canvas/WebGLSync.cpp
author Alex Gaynor <agaynor@mozilla.com>
Mon, 27 Nov 2017 14:37:34 -0600
changeset 403385 bcc0a91dd43feae18d4bf04d7db3d146035aa416
parent 396973 d0538cb619eb80b400dc439a59579e8cf9e895b4
child 423859 a97feb8161b7a4c60a539d83cb702a6e50fab1b1
permissions -rw-r--r--
Bug 1407693 - Part 2 - when a child process crashes, write extra annotation data to a pre-opened file descriptor instead of creating a new file; r=gsvelto,rbarker This removes the need for the content process to have permissions to create new files on macOS, allowing more aggressive sandboxing. MozReview-Commit-ID: 8agL5jwxDSL

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "WebGLSync.h"

#include "GLContext.h"
#include "mozilla/dom/WebGL2RenderingContextBinding.h"
#include "WebGLContext.h"

namespace mozilla {

WebGLSync::WebGLSync(WebGLContext* webgl, GLenum condition, GLbitfield flags)
    : WebGLRefCountedObject(webgl)
    , mGLName(mContext->gl->fFenceSync(condition, flags))
    , mFenceId(mContext->mNextFenceId)
{
    mContext->mNextFenceId += 1;
    mContext->mSyncs.insertBack(this);
}

WebGLSync::~WebGLSync()
{
    DeleteOnce();
}

void
WebGLSync::Delete()
{
    mContext->gl->fDeleteSync(mGLName);
    LinkedListElement<WebGLSync>::removeFrom(mContext->mSyncs);
}

WebGLContext*
WebGLSync::GetParentObject() const
{
    return mContext;
}

void
WebGLSync::MarkSignaled() const
{
    if (mContext->mCompletedFenceId < mFenceId) {
        mContext->mCompletedFenceId = mFenceId;
    }
}

// -------------------------------------------------------------------------
// IMPLEMENT NS
JSObject*
WebGLSync::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto)
{
    return dom::WebGLSyncBinding::Wrap(cx, this, givenProto);
}

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLSync)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLSync, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLSync, Release);

} // namespace mozilla