b8b4db46fe
git-svn-id: https://google-glog.googlecode.com/svn/trunk@2 eb4d4688-79bd-11dd-afb4-1d65580434c0
57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
// Copyright 2006 Google Inc. All Rights Reserved.
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// Author: Satoru Takabayashi
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//
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// An async-signal-safe and thread-safe demangler for Itanium C++ ABI
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// (aka G++ V3 ABI).
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// The demangler is implemented to be used in async signal handlers to
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// symbolize stack traces. We cannot use libstdc++'s
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// abi::__cxa_demangle() in such signal handlers since it's not async
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// signal safe (it uses malloc() internally).
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//
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// Note that this demangler doesn't support full demangling. More
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// specifically, it doesn't print types of function parameters and
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// types of template arguments. It just skips them. However, it's
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// still very useful to extract basic information such as class,
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// function, constructor, destructor, and operator names.
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//
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// See the implementation note in demangle.cc if you are interested.
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//
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// Example:
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//
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// | Mangled Name | The Demangler | abi::__cxa_demangle()
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// |---------------|---------------|-----------------------
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// | _Z1fv | f() | f()
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// | _Z1fi | f() | f(int)
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// | _Z3foo3bar | foo() | foo(bar)
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// | _Z1fIiEvi | f<>() | void f<int>(int)
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// | _ZN1N1fE | N::f | N::f
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// | _ZN3Foo3BarEv | Foo::Bar() | Foo::Bar()
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// | _Zrm1XS_" | operator%() | operator%(X, X)
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// | _ZN3FooC1Ev | Foo::Foo() | Foo::Foo()
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// | _Z1fSs | f() | f(std::basic_string<char,
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// | | | std::char_traits<char>,
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// | | | std::allocator<char> >)
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//
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// See the unit test for more examples.
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//
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// Note: we might want to write demanglers for ABIs other than Itanium
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// C++ ABI in the future.
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//
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#ifndef BASE_DEMANGLE_H_
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#define BASE_DEMANGLE_H_
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#include "config.h"
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_START_GOOGLE_NAMESPACE_
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// Demangle "mangled". On success, return true and write the
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// demangled symbol name to "out". Otherwise, return false.
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// "out" is modified even if demangling is unsuccessful.
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bool Demangle(const char *mangled, char *out, int out_size);
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_END_GOOGLE_NAMESPACE_
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#endif // BASE_DEMANGLE_H_
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