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/*
* Copyright (C) 2012 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 __UTILS_H__
#define __UTILS_H__
#include <stdint.h>
#include <unistd.h>
#include <utils/String8.h>
#include <utils/threads.h>
#include <utils/Timers.h>
namespace android {
class Timeout {
public:
Timeout() : mSystemEndTime(0) { }
// Set a timeout which should occur msec milliseconds from now.
// Negative values will cancel any current timeout;
void setTimeout(int msec);
// Return the number of milliseconds until the timeout occurs, or -1 if
// no timeout is scheduled.
int msecTillTimeout(nsecs_t nowTime);
int msecTillTimeout() { return msecTillTimeout(systemTime()); }
private:
// The systemTime() at which the timeout will be complete, or 0 if no
// timeout is currently scheduled.
nsecs_t mSystemEndTime;
};
class LogRing {
public:
LogRing(const char* header, size_t entries);
~LogRing();
// Send a log message to logcat as well as storing it in the ring buffer.
void log(int prio, const char* tag, const char* fmt, ...);
// Add a log message the ring buffer, do not send the message to logcat.
void log(const char* fmt, ...);
// Dump the log to an fd (dumpsys style)
void dumpLog(int fd);
private:
class Entry {
public:
uint32_t count;
struct timeval first_ts;
struct timeval last_ts;
String8 s;
};
Mutex mLock;
Entry* mRingBuffer;
size_t mSize;
size_t mWr;
bool mIsFull;
const char* mHeader;
void internalLog(int prio, const char* tag, const char* fmt, va_list va);
};
} // namespace android
#endif // __UTILS_H__
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