92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
// Licensed to the Apache Software Foundation (ASF) under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you 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.
|
|
|
|
|
|
#ifndef BUTIL_COMPAT_H
|
|
#define BUTIL_COMPAT_H
|
|
|
|
#include "butil/build_config.h"
|
|
#include <pthread.h>
|
|
|
|
#if defined(OS_MACOSX)
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <stdint.h>
|
|
#include <dispatch/dispatch.h> // dispatch_semaphore
|
|
#include <errno.h> // EINVAL
|
|
|
|
__BEGIN_DECLS
|
|
|
|
// Implement pthread_spinlock_t for MAC.
|
|
struct pthread_spinlock_t {
|
|
dispatch_semaphore_t sem;
|
|
};
|
|
inline int pthread_spin_init(pthread_spinlock_t *__lock, int __pshared) {
|
|
if (__pshared != 0) {
|
|
return EINVAL;
|
|
}
|
|
__lock->sem = dispatch_semaphore_create(1);
|
|
return 0;
|
|
}
|
|
inline int pthread_spin_destroy(pthread_spinlock_t *__lock) {
|
|
// TODO(gejun): Not see any destructive API on dispatch_semaphore
|
|
(void)__lock;
|
|
return 0;
|
|
}
|
|
inline int pthread_spin_lock(pthread_spinlock_t *__lock) {
|
|
return (int)dispatch_semaphore_wait(__lock->sem, DISPATCH_TIME_FOREVER);
|
|
}
|
|
inline int pthread_spin_trylock(pthread_spinlock_t *__lock) {
|
|
if (dispatch_semaphore_wait(__lock->sem, DISPATCH_TIME_NOW) == 0) {
|
|
return 0;
|
|
}
|
|
return EBUSY;
|
|
}
|
|
inline int pthread_spin_unlock(pthread_spinlock_t *__lock) {
|
|
return dispatch_semaphore_signal(__lock->sem);
|
|
}
|
|
|
|
__END_DECLS
|
|
|
|
#elif defined(OS_LINUX)
|
|
|
|
#include <sys/epoll.h>
|
|
|
|
#else
|
|
|
|
#error "The platform does not support epoll-like APIs"
|
|
|
|
#endif // defined(OS_MACOSX)
|
|
|
|
__BEGIN_DECLS
|
|
|
|
inline uint64_t pthread_numeric_id() {
|
|
#if defined(OS_MACOSX)
|
|
uint64_t id;
|
|
if (pthread_threadid_np(pthread_self(), &id) == 0) {
|
|
return id;
|
|
}
|
|
return -1;
|
|
#else
|
|
return pthread_self();
|
|
#endif
|
|
}
|
|
|
|
__END_DECLS
|
|
|
|
#endif // BUTIL_COMPAT_H
|