// Copyright 2015 The Crashpad Authors. All rights reserved. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include #include #include "base/logging.h" #include "client/crashpad_client.h" #include "util/misc/capture_context.h" #include "util/win/address_types.h" #include "util/win/context_wrappers.h" int wmain(int argc, wchar_t* argv[]) { CHECK_EQ(argc, 2); crashpad::CrashpadClient client; CHECK(client.SetHandlerIPCPipe(argv[1])); HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE); PCHECK(out != INVALID_HANDLE_VALUE) << "GetStdHandle"; CONTEXT context; crashpad::CaptureContext(&context); crashpad::WinVMAddress break_address = reinterpret_cast( crashpad::ProgramCounterFromCONTEXT(&context)); // This does not used CheckedWriteFile() because at high optimization // settings, a lot of logging code can be inlined, causing there to be a large // number of instructions between where the IP is captured and the actual // __debugbreak(). Instead call Windows' WriteFile() to minimize the amount of // code here. Because the next line is going to crash in any case, there's // minimal difference in behavior aside from an indication of what broke when // the other end experiences a ReadFile() error. DWORD bytes_written; WriteFile( out, &break_address, sizeof(break_address), &bytes_written, nullptr); __debugbreak(); return 0; }