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https://github.com/chromium/crashpad.git
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69d135acda
The main goal was to get the beginnings of module iteration and retrieval of CrashpadInfo in snapshot. The main change for that is to move crashpad_info_client_options[_test] down out of mac/. This also requires adding some of the supporting code of snapshot in ProcessReaderWin, ProcessSnapshotWin, and ModuleSnapshotWin. These are partially copied from Mac or stubbed out with lots of TODO annotations. This is a bit unfortunate, but seemed like the most productive way to make progress incrementally. That is, it's mostly placeholder at the moment, but hopefully has the right shape for things to come. R=mark@chromium.org BUG=crashpad:1 Review URL: https://codereview.chromium.org/1052813002
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
// Copyright 2014 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_info.h"
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#include "build/build_config.h"
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#include "util/stdlib/cxx.h"
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#if defined(OS_MACOSX)
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#include <mach-o/loader.h>
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#endif
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#if CXX_LIBRARY_VERSION >= 2011
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#include <type_traits>
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#endif
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namespace {
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static const uint32_t kCrashpadInfoVersion = 1;
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} // namespace
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namespace crashpad {
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#if CXX_LIBRARY_VERSION >= 2011 || DOXYGEN
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// In C++11, check that CrashpadInfo has standard layout, which is what is
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// actually important.
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static_assert(std::is_standard_layout<CrashpadInfo>::value,
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"CrashpadInfo must be standard layout");
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#else
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// In C++98 (ISO 14882), section 9.5.1 says that a union cannot have a member
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// with a non-trivial ctor, copy ctor, dtor, or assignment operator. Use this
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// property to ensure that CrashpadInfo remains POD. This doesn’t work for C++11
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// because the requirements for unions have been relaxed.
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union Compile_Assert {
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CrashpadInfo Compile_Assert__CrashpadInfo_must_be_pod;
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};
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#endif
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// This structure needs to be stored somewhere that is easy to find without
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// external information.
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//
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// It isn’t placed in an unnamed namespace: hopefully, this will catch attempts
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// to place multiple copies of this structure into the same module. If that’s
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// attempted, and the name of the symbol is the same in each translation unit,
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// it will result in a linker error, which is better than having multiple
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// structures show up.
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//
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// This may result in a static module initializer in debug-mode builds, but
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// because it’s POD, no code should need to run to initialize this under
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// release-mode optimization.
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#if defined(OS_MACOSX)
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// Put the structure in __DATA,__crashpad_info where it can be easily found
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// without having to consult the symbol table. The “used” attribute prevents it
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// from being dead-stripped.
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__attribute__((section(SEG_DATA ",__crashpad_info"),
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used,
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visibility("hidden"))) CrashpadInfo g_crashpad_info;
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#elif defined(OS_WIN)
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// Put the struct in a section name CPADinfo where it can be found without the
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// symbol table.
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#pragma section("CPADinfo", read, write)
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__declspec(allocate("CPADinfo")) CrashpadInfo g_crashpad_info;
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#endif
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// static
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CrashpadInfo* CrashpadInfo::GetCrashpadInfo() {
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return &g_crashpad_info;
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}
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CrashpadInfo::CrashpadInfo()
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: signature_(kSignature),
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size_(sizeof(*this)),
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version_(kCrashpadInfoVersion),
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crashpad_handler_behavior_(TriState::kUnset),
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system_crash_reporter_forwarding_(TriState::kUnset),
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padding_0_(0),
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simple_annotations_(nullptr) {
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}
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const uint32_t CrashpadInfo::kSignature;
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} // namespace crashpad
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