Source code

Revision control

Other Tools

/* -*- 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 BaseProfilerUtils.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/BaseProfilerUtils.h"
// --------------------------------------------- WASI process & thread ids
#if defined(__wasi__)
namespace mozilla::baseprofiler {
// WASI is single-process and single-thread for now.
BaseProfilerProcessId profiler_current_process_id() {
return BaseProfilerProcessId::FromNativeId(1u);
}
BaseProfilerThreadId profiler_current_thread_id() {
return BaseProfilerThreadId::FromNativeId(1u);
}
} // namespace mozilla::baseprofiler
// --------------------------------------------- Windows process & thread ids
#elif defined(XP_WIN)
# include <process.h>
# include <processthreadsapi.h>
namespace mozilla::baseprofiler {
BaseProfilerProcessId profiler_current_process_id() {
return BaseProfilerProcessId::FromNativeId(_getpid());
}
BaseProfilerThreadId profiler_current_thread_id() {
static_assert(std::is_same_v<BaseProfilerThreadId::NativeType,
decltype(GetCurrentThreadId())>,
"BaseProfilerThreadId::NativeType must be exactly the type "
"returned by GetCurrentThreadId()");
return BaseProfilerThreadId::FromNativeId(GetCurrentThreadId());
}
} // namespace mozilla::baseprofiler
// --------------------------------------------- Non-Windows process id
#else
// All non-Windows platforms are assumed to be POSIX, which has getpid().
# include <unistd.h>
namespace mozilla::baseprofiler {
BaseProfilerProcessId profiler_current_process_id() {
return BaseProfilerProcessId::FromNativeId(getpid());
}
} // namespace mozilla::baseprofiler
// --------------------------------------------- Non-Windows thread id
// ------------------------------------------------------- macOS
# if defined(XP_MACOSX)
# include <pthread.h>
namespace mozilla::baseprofiler {
BaseProfilerThreadId profiler_current_thread_id() {
uint64_t tid;
if (pthread_threadid_np(nullptr, &tid) != 0) {
return BaseProfilerThreadId{};
}
return BaseProfilerThreadId::FromNativeId(tid);
}
} // namespace mozilla::baseprofiler
// ------------------------------------------------------- Android
// Test Android before Linux, because Linux includes Android.
# elif defined(__ANDROID__) || defined(ANDROID)
namespace mozilla::baseprofiler {
BaseProfilerThreadId profiler_current_thread_id() {
return BaseProfilerThreadId::FromNativeId(gettid());
}
} // namespace mozilla::baseprofiler
// ------------------------------------------------------- Linux
# elif defined(XP_LINUX)
# include <sys/syscall.h>
namespace mozilla::baseprofiler {
BaseProfilerThreadId profiler_current_thread_id() {
// glibc doesn't provide a wrapper for gettid() until 2.30
return BaseProfilerThreadId::FromNativeId(syscall(SYS_gettid));
}
} // namespace mozilla::baseprofiler
// ------------------------------------------------------- FreeBSD
# elif defined(XP_FREEBSD)
# include <sys/thr.h>
namespace mozilla::baseprofiler {
BaseProfilerThreadId profiler_current_thread_id() {
long id;
if (thr_self(&id) != 0) {
return BaseProfilerThreadId{};
}
return BaseProfilerThreadId::FromNativeId(id);
}
} // namespace mozilla::baseprofiler
// ------------------------------------------------------- Others
# else
namespace mozilla::baseprofiler {
BaseProfilerThreadId profiler_current_thread_id() {
return BaseProfilerThreadId::FromNativeId(std::this_thread::get_id());
}
} // namespace mozilla::baseprofiler
# endif
#endif // End of non-XP_WIN.
// --------------------------------------------- Platform-agnostic definitions
namespace mozilla::baseprofiler {
static BaseProfilerThreadId scBaseProfilerMainThreadId{};
void profiler_init_main_thread_id() {
if (!scBaseProfilerMainThreadId.IsSpecified()) {
scBaseProfilerMainThreadId = profiler_current_thread_id();
}
}
BaseProfilerThreadId profiler_main_thread_id() {
return scBaseProfilerMainThreadId;
}
bool profiler_is_main_thread() {
return profiler_current_thread_id() == scBaseProfilerMainThreadId;
}
} // namespace mozilla::baseprofiler