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81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
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// Copyright 2022 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "test/scoped_set_thread_name.h"
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#include <errno.h>
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#include <pthread.h>
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#include <string>
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#include "base/check.h"
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#include "build/build_config.h"
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#if BUILDFLAG(IS_APPLE)
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#include <mach/thread_info.h>
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#endif
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namespace crashpad {
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namespace test {
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namespace {
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#if BUILDFLAG(IS_LINUX)
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// The kernel headers define this in linux/sched.h as TASK_COMM_LEN, but the
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// userspace copy of that header does not define it.
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constexpr size_t kPthreadNameMaxLen = 16;
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#elif BUILDFLAG(IS_APPLE)
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constexpr size_t kPthreadNameMaxLen = MAXTHREADNAMESIZE;
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#else
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#error Port to your platform
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#endif
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void SetCurrentThreadName(const std::string& thread_name) {
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#if BUILDFLAG(IS_LINUX)
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PCHECK((errno = pthread_setname_np(pthread_self(), thread_name.c_str())) == 0)
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<< "pthread_setname_np";
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#elif BUILDFLAG(IS_APPLE)
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// Apple's pthread_setname_np() sets errno instead of returning it.
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PCHECK(pthread_setname_np(thread_name.c_str()) == 0) << "pthread_setname_np";
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#else
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#error Port to your platform
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#endif
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}
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std::string GetCurrentThreadName() {
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std::string result(kPthreadNameMaxLen, '\0');
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PCHECK((errno = pthread_getname_np(
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pthread_self(), result.data(), result.length())) == 0)
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<< "pthread_getname_np";
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const auto result_nul_idx = result.find('\0');
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CHECK(result_nul_idx != std::string::npos)
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<< "pthread_getname_np did not NUL terminate";
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result.resize(result_nul_idx);
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return result;
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}
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} // namespace
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ScopedSetThreadName::ScopedSetThreadName(const std::string& new_thread_name)
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: original_name_(GetCurrentThreadName()) {
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SetCurrentThreadName(new_thread_name);
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}
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ScopedSetThreadName::~ScopedSetThreadName() {
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SetCurrentThreadName(original_name_);
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}
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} // namespace test
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} // namespace crashpad
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