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/*
* Copyright (C) 2013 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 ANDROID_PROCESS_CALLSTACK_H
#define ANDROID_PROCESS_CALLSTACK_H
#include <utils/CallStack.h>
#include <android/log.h>
#include <utils/KeyedVector.h>
#include <utils/String8.h>
#include <time.h>
#include <sys/types.h>
namespace android {
class Printer;
// Collect/print the call stack (function, file, line) traces for all threads in a process.
class ProcessCallStack {
public:
// Create an empty call stack. No-op.
ProcessCallStack();
// Copy the existing process callstack (no other side effects).
ProcessCallStack(const ProcessCallStack& rhs);
~ProcessCallStack();
// Immediately collect the stack traces for all threads.
void update();
// Print all stack traces to the log using the supplied logtag.
void log(const char* logtag, android_LogPriority priority = ANDROID_LOG_DEBUG,
const char* prefix = 0) const;
// Dump all stack traces to the specified file descriptor.
void dump(int fd, int indent = 0, const char* prefix = 0) const;
// Return a string (possibly very long) containing all the stack traces.
String8 toString(const char* prefix = 0) const;
// Dump a serialized representation of all the stack traces to the specified printer.
void print(Printer& printer) const;
// Get the number of threads whose stack traces were collected.
size_t size() const;
private:
void printInternal(Printer& printer, Printer& csPrinter) const;
// Reset the process's stack frames and metadata.
void clear();
struct ThreadInfo {
CallStack callStack;
String8 threadName;
};
// tid -> ThreadInfo
KeyedVector<pid_t, ThreadInfo> mThreadMap;
// Time that update() was last called
struct tm mTimeUpdated;
};
}; // namespace android
#endif // ANDROID_PROCESS_CALLSTACK_H
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