111 lines
2.7 KiB
C++
111 lines
2.7 KiB
C++
|
/*
|
||
|
|
* ThreadPrimitives.cpp
|
||
|
|
*
|
||
|
|
* This source file is part of the FoundationDB open source project
|
||
|
|
*
|
||
|
|
* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "ThreadPrimitives.h"
|
||
|
|
#include "Trace.h"
|
||
|
|
#include <stdint.h>
|
||
|
|
#include <iostream>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#ifdef _WIN32
|
||
|
|
#include <windows.h>
|
||
|
|
#undef min
|
||
|
|
#undef max
|
||
|
|
#endif
|
||
|
|
|
||
|
|
extern std::string format( const char *form, ... );
|
||
|
|
|
||
|
|
Event::Event() {
|
||
|
|
#ifdef _WIN32
|
||
|
|
ev = CreateEvent(NULL, FALSE, FALSE, NULL);
|
||
|
|
#elif defined(__linux__)
|
||
|
|
int result = sem_init(&sem, 0, 0);
|
||
|
|
if (result)
|
||
|
|
criticalError(FDB_EXIT_INIT_SEMAPHORE, "UnableToInitializeSemaphore", format("Could not initialize semaphore - %s", strerror(errno)).c_str());
|
||
|
|
#elif defined(__APPLE__)
|
||
|
|
self = mach_task_self();
|
||
|
|
kern_return_t ret = semaphore_create(self, &sem, SYNC_POLICY_FIFO, 0);
|
||
|
|
if(ret != KERN_SUCCESS)
|
||
|
|
criticalError(FDB_EXIT_INIT_SEMAPHORE, "UnableToInitializeSemaphore", format("Could not initialize semaphore - %s", strerror(errno)).c_str());
|
||
|
|
#else
|
||
|
|
#error Port me!
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
Event::~Event() {
|
||
|
|
#ifdef _WIN32
|
||
|
|
CloseHandle(ev);
|
||
|
|
#elif defined(__linux__)
|
||
|
|
sem_destroy(&sem);
|
||
|
|
#elif defined(__APPLE__)
|
||
|
|
semaphore_destroy(self, sem);
|
||
|
|
#else
|
||
|
|
#error Port me!
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void Event::set() {
|
||
|
|
#ifdef _WIN32
|
||
|
|
SetEvent(ev);
|
||
|
|
#elif defined(__linux__)
|
||
|
|
sem_post(&sem);
|
||
|
|
#elif defined(__APPLE__)
|
||
|
|
semaphore_signal(sem);
|
||
|
|
#else
|
||
|
|
#error Port me!
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void Event::block() {
|
||
|
|
#ifdef _WIN32
|
||
|
|
WaitForSingleObject(ev, INFINITE);
|
||
|
|
#elif defined(__linux__)
|
||
|
|
int ret;
|
||
|
|
do {
|
||
|
|
ret = sem_wait(&sem);
|
||
|
|
} while (ret != 0 && errno == EINTR);
|
||
|
|
#elif defined(__APPLE__)
|
||
|
|
kern_return_t ret;
|
||
|
|
do {
|
||
|
|
ret = semaphore_wait(sem);
|
||
|
|
} while ((ret != KERN_SUCCESS) && (ret != KERN_TERMINATED));
|
||
|
|
#else
|
||
|
|
#error Port me!
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
// Mutex::impl is allocated from the heap so that its size doesn't need to be in the header. Is there a better way?
|
||
|
|
Mutex::Mutex() {
|
||
|
|
impl = new CRITICAL_SECTION;
|
||
|
|
InitializeCriticalSection((CRITICAL_SECTION*)impl);
|
||
|
|
}
|
||
|
|
Mutex::~Mutex() {
|
||
|
|
DeleteCriticalSection((CRITICAL_SECTION*)impl);
|
||
|
|
delete (CRITICAL_SECTION*)impl;
|
||
|
|
}
|
||
|
|
void Mutex::enter() {
|
||
|
|
EnterCriticalSection((CRITICAL_SECTION*)impl);
|
||
|
|
}
|
||
|
|
void Mutex::leave() {
|
||
|
|
LeaveCriticalSection((CRITICAL_SECTION*)impl);
|
||
|
|
}
|