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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef _LIBBACKTRACE_UNWIND_PTRACE_H
     18 #define _LIBBACKTRACE_UNWIND_PTRACE_H
     19 
     20 #include <string>
     21 
     22 #include "BacktraceImpl.h"
     23 
     24 #include <libunwind.h>
     25 
     26 class UnwindPtrace : public BacktraceImpl {
     27 public:
     28   UnwindPtrace();
     29   virtual ~UnwindPtrace();
     30 
     31   virtual bool Unwind(size_t num_ignore_frames, ucontext_t* ucontext);
     32 
     33   virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset);
     34 
     35 private:
     36   unw_addr_space_t addr_space_;
     37   struct UPT_info* upt_info_;
     38 };
     39 
     40 #endif // _LIBBACKTRACE_UNWIND_PTRACE_H
     41