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/*
* Copyright (C) 2007 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_CALLSTACK_H
#define ANDROID_CALLSTACK_H
#include <android/log.h>
#include <backtrace/backtrace_constants.h>
#include <utils/String8.h>
#include <utils/Vector.h>
#include <stdint.h>
#include <sys/types.h>
namespace android {
class Printer;
// Collect/print the call stack (function, file, line) traces for a single thread.
class CallStack {
public:
// Create an empty call stack. No-op.
CallStack();
// Create a callstack with the current thread's stack trace.
// Immediately dump it to logcat using the given logtag.
CallStack(const char* logtag, int32_t ignoreDepth=1);
~CallStack();
// Reset the stack frames (same as creating an empty call stack).
void clear() { mFrameLines.clear(); }
// Immediately collect the stack traces for the specified thread.
// The default is to dump the stack of the current call.
void update(int32_t ignoreDepth=1, pid_t tid=BACKTRACE_CURRENT_THREAD);
// Dump a stack trace to the log using the supplied logtag.
void log(const char* logtag,
android_LogPriority priority = ANDROID_LOG_DEBUG,
const char* prefix = 0) const;
// Dump a stack trace to the specified file descriptor.
void dump(int fd, int indent = 0, const char* prefix = 0) const;
// Return a string (possibly very long) containing the complete stack trace.
String8 toString(const char* prefix = 0) const;
// Dump a serialized representation of the stack trace to the specified printer.
void print(Printer& printer) const;
// Get the count of stack frames that are in this call stack.
size_t size() const { return mFrameLines.size(); }
private:
Vector<String8> mFrameLines;
};
}; // namespace android
#endif // ANDROID_CALLSTACK_H
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