forked from mirrors/gecko-dev
166 lines
4.7 KiB
C++
166 lines
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// This file implements functions from BaseProfilerUtils.h on all platforms.
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// Functions with platform-specific implementations are separated in #if blocks
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// below, with each block being self-contained with all the #includes and
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// definitions it needs, to keep platform code easier to maintain in isolation.
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#include "mozilla/BaseProfilerUtils.h"
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// --------------------------------------------- WASI process & thread ids
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#if defined(__wasi__)
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namespace mozilla::baseprofiler {
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// WASI is single-process and single-thread for now.
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BaseProfilerProcessId profiler_current_process_id() {
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return BaseProfilerProcessId::FromNativeId(1u);
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}
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BaseProfilerThreadId profiler_current_thread_id() {
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return BaseProfilerThreadId::FromNativeId(1u);
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}
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} // namespace mozilla::baseprofiler
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// --------------------------------------------- Windows process & thread ids
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#elif defined(XP_WIN)
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# include <process.h>
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# include <processthreadsapi.h>
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namespace mozilla::baseprofiler {
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BaseProfilerProcessId profiler_current_process_id() {
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return BaseProfilerProcessId::FromNativeId(_getpid());
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}
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BaseProfilerThreadId profiler_current_thread_id() {
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static_assert(std::is_same_v<BaseProfilerThreadId::NativeType,
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decltype(GetCurrentThreadId())>,
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"BaseProfilerThreadId::NativeType must be exactly the type "
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"returned by GetCurrentThreadId()");
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return BaseProfilerThreadId::FromNativeId(GetCurrentThreadId());
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}
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} // namespace mozilla::baseprofiler
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// --------------------------------------------- Non-Windows process id
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#else
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// All non-Windows platforms are assumed to be POSIX, which has getpid().
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# include <unistd.h>
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namespace mozilla::baseprofiler {
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BaseProfilerProcessId profiler_current_process_id() {
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return BaseProfilerProcessId::FromNativeId(getpid());
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}
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} // namespace mozilla::baseprofiler
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// --------------------------------------------- Non-Windows thread id
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// ------------------------------------------------------- macOS
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# if defined(XP_MACOSX)
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# include <pthread.h>
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namespace mozilla::baseprofiler {
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BaseProfilerThreadId profiler_current_thread_id() {
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uint64_t tid;
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if (pthread_threadid_np(nullptr, &tid) != 0) {
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return BaseProfilerThreadId{};
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}
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return BaseProfilerThreadId::FromNativeId(tid);
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}
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} // namespace mozilla::baseprofiler
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// ------------------------------------------------------- Android
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// Test Android before Linux, because Linux includes Android.
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# elif defined(__ANDROID__) || defined(ANDROID)
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namespace mozilla::baseprofiler {
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BaseProfilerThreadId profiler_current_thread_id() {
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return BaseProfilerThreadId::FromNativeId(gettid());
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}
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} // namespace mozilla::baseprofiler
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// ------------------------------------------------------- Linux
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# elif defined(XP_LINUX)
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# include <sys/syscall.h>
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namespace mozilla::baseprofiler {
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BaseProfilerThreadId profiler_current_thread_id() {
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static thread_local pid_t tid;
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if (!tid) {
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// glibc doesn't provide a wrapper for gettid() until 2.30
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tid = static_cast<pid_t>(syscall(SYS_gettid));
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}
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return BaseProfilerThreadId::FromNativeId(tid);
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}
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} // namespace mozilla::baseprofiler
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// ------------------------------------------------------- FreeBSD
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# elif defined(XP_FREEBSD)
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# include <sys/thr.h>
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namespace mozilla::baseprofiler {
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BaseProfilerThreadId profiler_current_thread_id() {
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long id;
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if (thr_self(&id) != 0) {
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return BaseProfilerThreadId{};
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}
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return BaseProfilerThreadId::FromNativeId(id);
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}
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} // namespace mozilla::baseprofiler
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// ------------------------------------------------------- Others
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# else
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namespace mozilla::baseprofiler {
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BaseProfilerThreadId profiler_current_thread_id() {
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return BaseProfilerThreadId::FromNativeId(std::this_thread::get_id());
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}
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} // namespace mozilla::baseprofiler
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# endif
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#endif // End of non-XP_WIN.
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// --------------------------------------------- Platform-agnostic definitions
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namespace mozilla::baseprofiler {
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static BaseProfilerThreadId scBaseProfilerMainThreadId{};
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void profiler_init_main_thread_id() {
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if (!scBaseProfilerMainThreadId.IsSpecified()) {
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scBaseProfilerMainThreadId = profiler_current_thread_id();
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}
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}
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BaseProfilerThreadId profiler_main_thread_id() {
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return scBaseProfilerMainThreadId;
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}
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bool profiler_is_main_thread() {
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return profiler_current_thread_id() == scBaseProfilerMainThreadId;
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}
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} // namespace mozilla::baseprofiler
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