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/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
// NOTE: This file *must not* depend on any mongo symbols.
#include "mongo/platform/basic.h"
#include "mongo/config.h"
#if defined(MONGO_CONFIG_HAVE_HEADER_UNISTD_H)
#include <unistd.h>
#endif
// This will probably get us _exit on non-unistd platforms like Windows.
#include <cstdlib>
// NOTE: Header only dependencies are OK in this library.
#include "mongo/stdx/mutex.h"
#if !defined(__has_feature)
#define __has_feature(x) 0
#endif
#if !defined(__has_include)
#define __has_include(x) 0
#endif
#if __has_feature(address_sanitizer)
#if __has_include("sanitizer/coverage_interface.h")
// In Clang 3.7+, the coverage interface was split out into its own header file.
#include <sanitizer/coverage_interface.h>
#elif __has_include("sanitizer/common_interface_defs.h")
#include <sanitizer/common_interface_defs.h>
#endif
#include <sanitizer/lsan_interface.h>
#endif
#if defined(MONGO_CPU_PROFILER)
#include <gperftools/profiler.h>
#endif
#ifdef MONGO_GCOV
extern "C" void __gcov_flush();
#endif
namespace mongo {
namespace {
stdx::mutex* const quickExitMutex = new stdx::mutex;
} // namespace
void quickExit(int code) {
// Ensure that only one thread invokes the last rites here. No
// RAII here - we never want to unlock this.
if (quickExitMutex)
quickExitMutex->lock();
#if defined(MONGO_CPU_PROFILER)
::ProfilerStop();
#endif
#ifdef MONGO_GCOV
__gcov_flush();
#endif
#if __has_feature(address_sanitizer)
// Always dump coverage data first because older versions of sanitizers may not write coverage
// data before exiting with errors. The underlying issue is fixed in clang 3.6, which also
// prevents coverage data from being written more than once via an atomic guard.
__sanitizer_cov_dump();
__lsan_do_leak_check();
#endif
#if defined(_WIN32)
// SERVER-23860: VS 2015 Debug Builds abort and Release builds AV when _exit is called on
// multiple threads. Each call to _exit shuts down the CRT, and so subsequent calls into the
// CRT result in undefined behavior. Bypass _exit CRT shutdown code and call TerminateProcess
// directly instead to match GLibc's _exit which calls the syscall exit_group.
::TerminateProcess(GetCurrentProcess(), code);
#else
::_exit(code);
#endif
}
} // namespace mongo
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