/src/brpc/src/butil/compat.h
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1 | | // Licensed to the Apache Software Foundation (ASF) under one |
2 | | // or more contributor license agreements. See the NOTICE file |
3 | | // distributed with this work for additional information |
4 | | // regarding copyright ownership. The ASF licenses this file |
5 | | // to you under the Apache License, Version 2.0 (the |
6 | | // "License"); you may not use this file except in compliance |
7 | | // with the License. You may obtain a copy of the License at |
8 | | // |
9 | | // http://www.apache.org/licenses/LICENSE-2.0 |
10 | | // |
11 | | // Unless required by applicable law or agreed to in writing, |
12 | | // software distributed under the License is distributed on an |
13 | | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
14 | | // KIND, either express or implied. See the License for the |
15 | | // specific language governing permissions and limitations |
16 | | // under the License. |
17 | | |
18 | | |
19 | | #ifndef BUTIL_COMPAT_H |
20 | | #define BUTIL_COMPAT_H |
21 | | |
22 | | #include "butil/build_config.h" |
23 | | #include <pthread.h> |
24 | | |
25 | | #if defined(OS_MACOSX) |
26 | | |
27 | | #include <sys/cdefs.h> |
28 | | #include <stdint.h> |
29 | | #include <dispatch/dispatch.h> // dispatch_semaphore |
30 | | #include <errno.h> // EINVAL |
31 | | |
32 | | __BEGIN_DECLS |
33 | | |
34 | | // Implement pthread_spinlock_t for MAC. |
35 | | struct pthread_spinlock_t { |
36 | | dispatch_semaphore_t sem; |
37 | | }; |
38 | | inline int pthread_spin_init(pthread_spinlock_t *__lock, int __pshared) { |
39 | | if (__pshared != 0) { |
40 | | return EINVAL; |
41 | | } |
42 | | __lock->sem = dispatch_semaphore_create(1); |
43 | | return 0; |
44 | | } |
45 | | inline int pthread_spin_destroy(pthread_spinlock_t *__lock) { |
46 | | // TODO(gejun): Not see any destructive API on dispatch_semaphore |
47 | | (void)__lock; |
48 | | return 0; |
49 | | } |
50 | | inline int pthread_spin_lock(pthread_spinlock_t *__lock) { |
51 | | return (int)dispatch_semaphore_wait(__lock->sem, DISPATCH_TIME_FOREVER); |
52 | | } |
53 | | inline int pthread_spin_trylock(pthread_spinlock_t *__lock) { |
54 | | if (dispatch_semaphore_wait(__lock->sem, DISPATCH_TIME_NOW) == 0) { |
55 | | return 0; |
56 | | } |
57 | | return EBUSY; |
58 | | } |
59 | | inline int pthread_spin_unlock(pthread_spinlock_t *__lock) { |
60 | | return dispatch_semaphore_signal(__lock->sem); |
61 | | } |
62 | | |
63 | | __END_DECLS |
64 | | |
65 | | #elif defined(OS_LINUX) |
66 | | |
67 | | #include <sys/epoll.h> |
68 | | |
69 | | #else |
70 | | |
71 | | #error "The platform does not support epoll-like APIs" |
72 | | |
73 | | #endif // defined(OS_MACOSX) |
74 | | |
75 | | __BEGIN_DECLS |
76 | | |
77 | 0 | inline uint64_t pthread_numeric_id() { |
78 | | #if defined(OS_MACOSX) |
79 | | uint64_t id; |
80 | | if (pthread_threadid_np(pthread_self(), &id) == 0) { |
81 | | return id; |
82 | | } |
83 | | return -1; |
84 | | #else |
85 | 0 | return pthread_self(); |
86 | 0 | #endif |
87 | 0 | } |
88 | | |
89 | | __END_DECLS |
90 | | |
91 | | #endif // BUTIL_COMPAT_H |