1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "thread_utils.h"
18
19#if defined(__APPLE__)
20
21#include <sys/syscall.h>
22
23// Mac OS >= 10.6 has a system call equivalent to Linux's gettid().
24pid_t gettid() {
25  return syscall(SYS_thread_selfid);
26}
27
28#elif !defined(__BIONIC__)
29
30// glibc doesn't implement or export either gettid or tgkill.
31#include <unistd.h>
32#include <sys/syscall.h>
33
34pid_t gettid() {
35  return syscall(__NR_gettid);
36}
37
38int tgkill(int tgid, int tid, int sig) {
39  return syscall(__NR_tgkill, tgid, tid, sig);
40}
41
42#endif
43