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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LIBBACKTRACE_UNWIND_MAP_H
#define _LIBBACKTRACE_UNWIND_MAP_H
#include <pthread.h>
#include <stdint.h>
#include <sys/types.h>
#include <backtrace/BacktraceMap.h>
// The unw_map_cursor_t structure is different depending on whether it is
// the local or remote version. In order to get the correct version, include
// libunwind.h first then this header.
class UnwindMap : public BacktraceMap {
public:
explicit UnwindMap(pid_t pid);
unw_map_cursor_t* GetMapCursor() { return &map_cursor_; }
protected:
unw_map_cursor_t map_cursor_;
};
class UnwindMapRemote : public UnwindMap {
public:
explicit UnwindMapRemote(pid_t pid);
virtual ~UnwindMapRemote();
bool Build() override;
private:
bool GenerateMap();
};
class UnwindMapLocal : public UnwindMap {
public:
UnwindMapLocal();
virtual ~UnwindMapLocal();
bool Build() override;
void FillIn(uintptr_t addr, backtrace_map_t* map) override;
void LockIterator() override { pthread_rwlock_rdlock(&map_lock_); }
void UnlockIterator() override { pthread_rwlock_unlock(&map_lock_); }
private:
bool GenerateMap();
bool map_created_;
pthread_rwlock_t map_lock_;
};
#endif // _LIBBACKTRACE_UNWIND_MAP_H