Source/WebCore/inspector/mac/PageDebuggerMac.mm

/*
 * Copyright (C) 2008-2018 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

#import "config.h"
#import "PageDebugger.h"

#if PLATFORM(MAC)

#import <wtf/ProcessPrivilege.h>

namespace WebCore {

bool PageDebugger::platformShouldContinueRunningEventLoopWhilePaused()
{
    // Be very careful before removing this code. It has been tried multiple times, always ending up
    // breaking inspection of WebKitLegacy (in MiniBrowser, in 3rd party apps, or sometimes both).
    //  - <https://webkit.org/b/117596> <rdar://problem/14133001>
    //  - <https://webkit.org/b/210177> <rdar://problem/61485723>

#if ENABLE(WEBPROCESS_NSRUNLOOP)
    if (![NSApp isRunning]) {
        [[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:0.05]];
        return true;
    }

    ASSERT(hasProcessPrivilege(ProcessPrivilege::CanCommunicateWithWindowServer));
#endif

    [NSApp setWindowsNeedUpdate:YES];

    if (NSEvent *event = [NSApp nextEventMatchingMask:NSEventMaskAny untilDate:[NSDate dateWithTimeIntervalSinceNow:0.05] inMode:NSDefaultRunLoopMode dequeue:YES])
        [NSApp sendEvent:event];

    return true;
}

} // namespace WebCore

#endif // PLATFORM(MAC)