1 /* 2 * Copyright (C) 2018 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 #ifndef INCLUDE_PERFETTO_BASE_THREAD_UTILS_H_ 18 #define INCLUDE_PERFETTO_BASE_THREAD_UTILS_H_ 19 20 #include <stdint.h> 21 22 #include "perfetto/base/build_config.h" 23 24 #if PERFETTO_BUILDFLAG(PERFETTO_OS_WIN) 25 #include <processthreadsapi.h> 26 #elif PERFETTO_BUILDFLAG(PERFETTO_OS_FUCHSIA) 27 #include <zircon/process.h> 28 #include <zircon/types.h> 29 #else 30 #include <pthread.h> 31 #include <sys/syscall.h> 32 #include <sys/types.h> 33 #include <unistd.h> 34 #endif 35 36 namespace perfetto { 37 namespace base { 38 39 #if PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) 40 using PlatformThreadID = pid_t; GetThreadId()41inline PlatformThreadID GetThreadId() { 42 return gettid(); 43 } 44 #elif PERFETTO_BUILDFLAG(PERFETTO_OS_LINUX) 45 using PlatformThreadID = pid_t; 46 inline PlatformThreadID GetThreadId() { 47 return static_cast<pid_t>(syscall(__NR_gettid)); 48 } 49 #elif PERFETTO_BUILDFLAG(PERFETTO_OS_FUCHSIA) 50 using PlatformThreadID = zx_handle_t; 51 inline PlatformThreadID GetThreadId() { 52 return static_cast<pid_t>(zx_thread_self()); 53 } 54 #elif PERFETTO_BUILDFLAG(PERFETTO_OS_MACOSX) 55 using PlatformThreadID = uint64_t; 56 inline PlatformThreadID GetThreadId() { 57 uint64_t tid; 58 pthread_threadid_np(nullptr, &tid); 59 return tid; 60 } 61 #elif PERFETTO_BUILDFLAG(PERFETTO_OS_WIN) 62 using PlatformThreadID = uint64_t; 63 inline PlatformThreadID GetThreadId() { 64 return static_cast<uint64_t>(GetCurrentThreadID()); 65 } 66 #else // Default to pthreads in case no OS is set. 67 using PlatformThreadID = pthread_t; 68 inline PlatformThreadID GetThreadId() { 69 return pthread_self(); 70 } 71 #endif 72 73 } // namespace base 74 } // namespace perfetto 75 76 #endif // INCLUDE_PERFETTO_BASE_THREAD_UTILS_H_ 77