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/*
* Copyright (C) 2023 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. ``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
* 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.
*/
#include "config.h"
#include <wtf/WTFProcess.h>
#include <stdlib.h>
#if OS(UNIX)
#include <unistd.h>
#endif
#if OS(WINDOWS)
#include <windows.h>
#endif
namespace WTF {
void exitProcess(int status)
{
#if OS(WINDOWS)
// Windows do not have "main thread" concept. So, shutdown of the main thread does not mean immediate process shutdown.
// As a result, if there is running thread, it sometimes cause deadlock.
//
// > If one of the terminated threads in the process holds a lock and the DLL detach code in one of the loaded DLLs
// > attempts to acquire the same lock, then calling ExitProcess results in a deadlock. In contrast, if a process
// > terminates by calling TerminateProcess, the DLLs that the process is attached to are not notified of the process
// > termination. Therefore, if you do not know the state of all threads in your process, it is better to call TerminateProcess
// > than ExitProcess. Note that returning from the main function of an application results in a call to ExitProcess.
// https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-exitprocess
//
// Always use TerminateProcess since framework does not know the status of the other threads.
TerminateProcess(GetCurrentProcess(), status);
// The code can reach here only when very buggy anti-virus software hooks are integrated into the system. To make it safe, in that case,
// let the process crash explicitly.
CRASH();
#else
exit(status);
#endif
}
void terminateProcess(int status)
{
#if OS(WINDOWS)
// On Windows, exitProcess and terminateProcess do the same thing due to its more complicated main thread handling.
// See comment in exitProcess.
exitProcess(status);
#else
_exit(status);
#endif
}
}
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