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