84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
/*
|
|
* 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 _BACKTRACE_BACKTRACE_MAP_H
|
|
#define _BACKTRACE_BACKTRACE_MAP_H
|
|
|
|
#include <stdint.h>
|
|
#ifdef USE_MINGW
|
|
// MINGW does not define these constants.
|
|
#define PROT_NONE 0
|
|
#define PROT_READ 0x1
|
|
#define PROT_WRITE 0x2
|
|
#define PROT_EXEC 0x4
|
|
#else
|
|
#include <sys/mman.h>
|
|
#endif
|
|
|
|
#include <deque>
|
|
#include <string>
|
|
|
|
struct backtrace_map_t {
|
|
uintptr_t start;
|
|
uintptr_t end;
|
|
int flags;
|
|
std::string name;
|
|
};
|
|
|
|
class BacktraceMap {
|
|
public:
|
|
static BacktraceMap* Create(pid_t pid);
|
|
|
|
virtual ~BacktraceMap();
|
|
|
|
// Get the map data structure for the given address.
|
|
virtual const backtrace_map_t* Find(uintptr_t addr);
|
|
|
|
// The flags returned are the same flags as used by the mmap call.
|
|
// The values are PROT_*.
|
|
int GetFlags(uintptr_t pc) {
|
|
const backtrace_map_t* map = Find(pc);
|
|
if (map) {
|
|
return map->flags;
|
|
}
|
|
return PROT_NONE;
|
|
}
|
|
|
|
bool IsReadable(uintptr_t pc) { return GetFlags(pc) & PROT_READ; }
|
|
bool IsWritable(uintptr_t pc) { return GetFlags(pc) & PROT_WRITE; }
|
|
bool IsExecutable(uintptr_t pc) { return GetFlags(pc) & PROT_EXEC; }
|
|
|
|
typedef std::deque<backtrace_map_t>::iterator iterator;
|
|
iterator begin() { return maps_.begin(); }
|
|
iterator end() { return maps_.end(); }
|
|
|
|
typedef std::deque<backtrace_map_t>::const_iterator const_iterator;
|
|
const_iterator begin() const { return maps_.begin(); }
|
|
const_iterator end() const { return maps_.end(); }
|
|
|
|
virtual bool Build();
|
|
|
|
protected:
|
|
BacktraceMap(pid_t pid);
|
|
|
|
virtual bool ParseLine(const char* line, backtrace_map_t* map);
|
|
|
|
std::deque<backtrace_map_t> maps_;
|
|
pid_t pid_;
|
|
};
|
|
|
|
#endif // _BACKTRACE_BACKTRACE_MAP_H
|