// Copyright (c) 2006, Google Inc. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following disclaimer // in the documentation and/or other materials provided with the // distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // // Author: Satoru Takabayashi // // An async-signal-safe and thread-safe demangler for Itanium C++ ABI // (aka G++ V3 ABI). // The demangler is implemented to be used in async signal handlers to // symbolize stack traces. We cannot use libstdc++'s // abi::__cxa_demangle() in such signal handlers since it's not async // signal safe (it uses malloc() internally). // // Note that this demangler doesn't support full demangling. More // specifically, it doesn't print types of function parameters and // types of template arguments. It just skips them. However, it's // still very useful to extract basic information such as class, // function, constructor, destructor, and operator names. // // See the implementation note in demangle.cc if you are interested. // // Example: // // | Mangled Name | The Demangler | abi::__cxa_demangle() // |---------------|---------------|----------------------- // | _Z1fv | f() | f() // | _Z1fi | f() | f(int) // | _Z3foo3bar | foo() | foo(bar) // | _Z1fIiEvi | f<>() | void f<int>(int) // | _ZN1N1fE | N::f | N::f // | _ZN3Foo3BarEv | Foo::Bar() | Foo::Bar() // | _Zrm1XS_" | operator%() | operator%(X, X) // | _ZN3FooC1Ev | Foo::Foo() | Foo::Foo() // | _Z1fSs | f() | f(std::basic_string<char, // | | | std::char_traits<char>, // | | | std::allocator<char> >) // // See the unit test for more examples. // // Note: we might want to write demanglers for ABIs other than Itanium // C++ ABI in the future. // #ifndef BASE_DEMANGLE_H_ #define BASE_DEMANGLE_H_ #include "config.h" _START_GOOGLE_NAMESPACE_ // Demangle "mangled". On success, return true and write the // demangled symbol name to "out". Otherwise, return false. // "out" is modified even if demangling is unsuccessful. bool Demangle(const char *mangled, char *out, int out_size); _END_GOOGLE_NAMESPACE_ #endif // BASE_DEMANGLE_H_