73 lines
1.9 KiB
C++
73 lines
1.9 KiB
C++
// Copyright 2020 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 <dlfcn.h>
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#include <pthread.h>
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#include "base/logging.h"
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#include "client/crashpad_client.h"
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#include "util/misc/no_cfi_icall.h"
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namespace {
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using StartRoutineType = void* (*)(void*);
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struct StartParams {
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StartRoutineType start_routine;
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void* arg;
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};
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void* InitializeSignalStackAndStart(StartParams* params) {
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crashpad::CrashpadClient::InitializeSignalStackForThread();
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crashpad::NoCfiIcall<StartRoutineType> start_routine(params->start_routine);
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void* arg = params->arg;
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delete params;
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return start_routine(arg);
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}
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} // namespace
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extern "C" {
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__attribute__((visibility("default"))) int pthread_create(
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pthread_t* thread,
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const pthread_attr_t* attr,
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StartRoutineType start_routine,
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void* arg) {
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static const crashpad::NoCfiIcall<decltype(pthread_create)*>
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next_pthread_create([]() {
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const auto next_pthread_create = dlsym(RTLD_NEXT, "pthread_create");
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CHECK(next_pthread_create) << "dlsym: " << dlerror();
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return next_pthread_create;
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}());
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StartParams* params = new StartParams;
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params->start_routine = start_routine;
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params->arg = arg;
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int result = next_pthread_create(
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thread,
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attr,
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reinterpret_cast<StartRoutineType>(InitializeSignalStackAndStart),
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params);
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if (result != 0) {
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delete params;
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}
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return result;
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}
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} // extern "C"
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