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842679cdbb
This makes it possible to make decoration faster by caching some information between runs. Instead of a simple callback a decorator can be a class with a virtual function. This function will not be called concurrently, so it does not need to worry about locking, but it may be called from a signal handler so it must avoid any signal-unsafe operations. The decorator is registered via a factory function, which creates a new object. Internally, the new decorators are stored inside the ObjFile object and initialized on the first use. If a different factory function is registered, the old decorators are destroyed on the next call to absl::Symbolize. In order to make the state management simpler, we only support registering a single decorator. The old interface is left in place to make the migration easier, but it will be removed soon. PiperOrigin-RevId: 881284709 Change-Id: I25b9db656531fabebd1004f7ec298dc31613b8e3
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
// Copyright 2018 The Abseil Authors.
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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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// https://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 "absl/debugging/symbolize.h"
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#include "absl/base/config.h"
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#include "absl/base/internal/low_level_alloc.h"
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#include "absl/debugging/internal/symbolize.h"
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#ifdef _WIN32
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#include <winapifamily.h>
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#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
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// UWP doesn't have access to win32 APIs.
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#define ABSL_INTERNAL_HAVE_SYMBOLIZE_WIN32
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#endif
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#endif
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// Emscripten symbolization relies on JS. Do not use them in standalone mode.
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#if defined(__EMSCRIPTEN__) && !defined(STANDALONE_WASM)
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#define ABSL_INTERNAL_HAVE_SYMBOLIZE_WASM
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#endif
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#if defined(ABSL_INTERNAL_HAVE_ELF_SYMBOLIZE)
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#include "absl/debugging/symbolize_elf.inc"
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#elif defined(ABSL_INTERNAL_HAVE_SYMBOLIZE_WIN32)
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// The Windows Symbolizer only works if PDB files containing the debug info
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// are available to the program at runtime.
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#include "absl/debugging/symbolize_win32.inc"
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#elif defined(__APPLE__)
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#include "absl/debugging/symbolize_darwin.inc"
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#elif defined(ABSL_INTERNAL_HAVE_SYMBOLIZE_WASM)
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#include "absl/debugging/symbolize_emscripten.inc"
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#else
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#include "absl/debugging/symbolize_unimplemented.inc"
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#endif
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace debugging_internal {
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void SymbolDecoratorDeleter::operator()(SymbolDecorator* ptr) {
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ptr->~SymbolDecorator();
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base_internal::LowLevelAlloc::Free(ptr);
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}
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} // namespace debugging_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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