mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-31 01:43:03 +08:00
7f939285de
In https://codereview.chromium.org/1414533006/, I'm adding a few Mac-specific SetHandler() variants, so it makes sense to name each SetHandler() variant for what it does. I'm also making it take a wstring argument, which seems like a more natural fit for what it does. There should be fewer string conversions this way. R=scottmg@chromium.org Review URL: https://codereview.chromium.org/1406993008 .
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
// 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 <malloc.h>
|
|
#include <stdlib.h>
|
|
#include <windows.h>
|
|
#include <winternl.h>
|
|
|
|
#include "base/logging.h"
|
|
#include "base/strings/stringprintf.h"
|
|
#include "client/crashpad_client.h"
|
|
#include "snapshot/win/process_reader_win.h"
|
|
|
|
namespace crashpad {
|
|
namespace {
|
|
|
|
// We VirtualFree a region in ourselves (the stack) to confirm that the
|
|
// exception reporter captures as much as possible in the minidump and doesn't
|
|
// abort. __debugbreak() immediately after doing so because the process is
|
|
// clearly in a very broken state at this point.
|
|
bool FreeOwnStackAndBreak() {
|
|
ProcessReaderWin process_reader;
|
|
if (!process_reader.Initialize(GetCurrentProcess(),
|
|
ProcessSuspensionState::kRunning)) {
|
|
LOG(ERROR) << "ProcessReaderWin Initialize";
|
|
return false;
|
|
}
|
|
|
|
const std::vector<ProcessReaderWin::Thread> threads =
|
|
process_reader.Threads();
|
|
if (threads.empty()) {
|
|
LOG(ERROR) << "no threads";
|
|
return false;
|
|
}
|
|
|
|
// Push the stack up a bit so that hopefully the crash handler can succeed,
|
|
// but won't be able to read the base of the stack.
|
|
_alloca(16384);
|
|
|
|
// We can't succeed at MEM_RELEASEing this memory, but MEM_DECOMMIT is good
|
|
// enough to make it inaccessible.
|
|
if (!VirtualFree(reinterpret_cast<void*>(threads[0].stack_region_address),
|
|
100,
|
|
MEM_DECOMMIT)) {
|
|
PLOG(ERROR) << "VirtualFree";
|
|
return false;
|
|
}
|
|
|
|
// If the VirtualFree() succeeds, we may have already crashed. __debugbreak()
|
|
// just to be sure.
|
|
__debugbreak();
|
|
|
|
return true;
|
|
}
|
|
|
|
int SelfDestroyingMain(int argc, wchar_t* argv[]) {
|
|
if (argc != 2) {
|
|
fprintf(stderr, "Usage: %ls <server_pipe_name>\n", argv[0]);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
CrashpadClient client;
|
|
if (!client.SetHandlerIPCPipe(argv[1])) {
|
|
LOG(ERROR) << "SetHandler";
|
|
return EXIT_FAILURE;
|
|
}
|
|
if (!client.UseHandler()) {
|
|
LOG(ERROR) << "UseHandler";
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (!FreeOwnStackAndBreak())
|
|
return EXIT_FAILURE;
|
|
|
|
// This will never be reached. On success, we'll have crashed above, or
|
|
// otherwise returned before here.
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace crashpad
|
|
|
|
int wmain(int argc, wchar_t* argv[]) {
|
|
return crashpad::SelfDestroyingMain(argc, argv);
|
|
}
|