mirror of
https://github.com/chromium/crashpad.git
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92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
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// 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 "client/crashpad_client.h"
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#include <windows.h>
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#include "base/logging.h"
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namespace {
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// Time to wait for the handler to create a dump. This is tricky to figure out.
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const DWORD kMillisecondsUntilTerminate = 5000;
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// This is the exit code that the process will return to the system once the
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// crash has been handled by Crashpad. We don't want to clash with the
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// application-defined exit codes but we don't know them so we use one that is
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// unlikely to be used.
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const UINT kCrashExitCode = 0xffff7001;
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// These two handles to events are leaked.
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HANDLE g_signal_exception = nullptr;
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HANDLE g_wait_termination = nullptr;
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LONG WINAPI UnhandledExceptionHandler(EXCEPTION_POINTERS* exception_pointers) {
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// TODO (cpu): Here write |exception_pointers| to g_crashpad_info.
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DWORD rv = SignalObjectAndWait(g_signal_exception,
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g_wait_termination,
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kMillisecondsUntilTerminate,
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FALSE);
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if (rv != WAIT_OBJECT_0) {
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// Something went wrong. It is likely that a dump has not been created.
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if (rv == WAIT_TIMEOUT) {
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LOG(WARNING) << "SignalObjectAndWait timed out";
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} else {
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PLOG(WARNING) << "SignalObjectAndWait error";
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}
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}
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// We don't want to generate more exceptions, so we take the fast route.
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TerminateProcess(GetCurrentProcess(), kCrashExitCode);
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return 0L;
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}
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} // namespace
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namespace crashpad {
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CrashpadClient::CrashpadClient() {
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}
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CrashpadClient::~CrashpadClient() {
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}
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bool CrashpadClient::StartHandler(
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const base::FilePath& handler,
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const base::FilePath& database,
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const std::string& url,
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const std::map<std::string, std::string>& annotations,
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const std::vector<std::string>& arguments) {
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// TODO(cpu): Provide a reference implementation.
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return false;
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}
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bool SetHandler(const std::string& ipc_port) {
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// TODO (cpu): Contact the handler and obtain g_signal_exception and
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// g_wait_termination.
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return false;
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}
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bool CrashpadClient::UseHandler() {
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if (!g_signal_exception)
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return false;
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if (!g_wait_termination)
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return false;
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// In theory we could store the previous handler but it is not clear what
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// use we have for it.
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SetUnhandledExceptionFilter(&UnhandledExceptionHandler);
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return true;
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}
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} // namespace crashpad
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