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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/platform/process_id.h"
#ifndef _WIN32
#include <pthread.h>
#endif
#if defined(__linux__)
#include <sys/syscall.h>
#include <sys/types.h>
#endif
#ifdef __FreeBSD__
#include <pthread_np.h>
#endif
#include <iostream>
#include <limits>
#include <sstream> // IWYU pragma: keep
#include "mongo/base/static_assert.h"
#include "mongo/util/assert_util.h"
namespace mongo {
MONGO_STATIC_ASSERT(sizeof(NativeProcessId) == sizeof(uint32_t));
namespace {
#ifdef _WIN32
inline NativeProcessId getCurrentNativeProcessId() {
return GetCurrentProcessId();
}
#else
inline NativeProcessId getCurrentNativeProcessId() {
return getpid();
}
#endif
#ifdef _WIN32
inline NativeProcessId getCurrentNativeThreadId() {
return GetCurrentThreadId();
}
#elif __APPLE__
inline NativeProcessId getCurrentNativeThreadId() {
// macOS deprecated syscall in 10.12.
uint64_t tid;
invariant(::pthread_threadid_np(NULL, &tid) == 0);
return tid;
}
#elif __FreeBSD__
inline NativeProcessId getCurrentNativeThreadId() {
return pthread_getthreadid_np();
}
#else
inline NativeProcessId getCurrentNativeThreadId() {
return ::syscall(SYS_gettid);
}
#endif
} // namespace
ProcessId ProcessId::getCurrent() {
return fromNative(getCurrentNativeProcessId());
}
ProcessId ProcessId::getCurrentThreadId() {
return fromNative(getCurrentNativeThreadId());
}
int64_t ProcessId::asInt64() const {
typedef std::numeric_limits<NativeProcessId> limits;
if (limits::is_signed)
return _npid;
else
return static_cast<int64_t>(static_cast<uint64_t>(_npid));
}
long long ProcessId::asLongLong() const {
return static_cast<long long>(asInt64());
}
std::string ProcessId::toString() const {
std::ostringstream os;
os << *this;
return os.str();
}
std::ostream& operator<<(std::ostream& os, ProcessId pid) {
return os << pid.toNative();
}
} // namespace mongo
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