mirror of
https://github.com/chromium/crashpad.git
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9104d53d1c
The use of InterlockedCompareExchange() was very wrong. Improved error checking coming in another CL from mark@, see linked bug for discussion. Bug: crashpad:160 Change-Id: Id230af6f37c6cdce807dd4d8aba9d33e9bdeffd0 Reviewed-on: https://chromium-review.googlesource.com/459230 Commit-Queue: Scott Graham <scottmg@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org>
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
// Copyright 2015 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 <windows.h>
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#include "base/logging.h"
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#include "client/crashpad_info.h"
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#include "util/file/file_io.h"
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#include "util/win/scoped_handle.h"
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DWORD WINAPI LotsOfReferencesThreadProc(void* param) {
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LONG* count = reinterpret_cast<LONG*>(param);
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// Allocate a bunch of pointers to things on the stack.
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int* pointers[1000];
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for (int i = 0; i < arraysize(pointers); ++i) {
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pointers[i] = new int[2048];
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}
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InterlockedIncrement(count);
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Sleep(INFINITE);
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return 0;
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}
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int wmain(int argc, wchar_t* argv[]) {
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CHECK_EQ(argc, 2);
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crashpad::ScopedKernelHANDLE done(CreateEvent(nullptr, true, false, argv[1]));
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PCHECK(LoadLibrary(L"crashpad_snapshot_test_image_reader_module.dll"))
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<< "LoadLibrary";
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// Create threads with lots of stack pointers to memory. This is used to
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// verify the cap on pointed-to memory.
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LONG thread_ready_count = 0;
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crashpad::ScopedKernelHANDLE threads[100];
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for (int i = 0; i < arraysize(threads); ++i) {
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threads[i].reset(CreateThread(nullptr,
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0,
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&LotsOfReferencesThreadProc,
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reinterpret_cast<void*>(&thread_ready_count),
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0,
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nullptr));
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if (!threads[i].is_valid()) {
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PLOG(ERROR) << "CreateThread";
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return 1;
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}
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}
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for (;;) {
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if (InterlockedCompareExchange(&thread_ready_count,
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thread_ready_count,
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arraysize(threads)) == arraysize(threads)) {
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// All threads have allocated their references.
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break;
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}
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Sleep(10);
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}
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crashpad::CrashpadInfo* crashpad_info =
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crashpad::CrashpadInfo::GetCrashpadInfo();
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crashpad_info->set_gather_indirectly_referenced_memory(
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crashpad::TriState::kEnabled, 100000);
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// Tell the parent process we're ready to proceed.
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HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
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PCHECK(out != INVALID_HANDLE_VALUE) << "GetStdHandle";
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char c = ' ';
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crashpad::CheckedWriteFile(out, &c, sizeof(c));
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// Parent process says we can exit.
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CHECK_EQ(WAIT_OBJECT_0, WaitForSingleObject(done.get(), INFINITE));
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return 0;
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}
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