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/*
* Copyright 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.
*/
#include <stdint.h>
#include <utils/Errors.h>
#include <utils/Singleton.h>
#ifndef ANDROID_SF_EVENTLOG_H
#define ANDROID_SF_EVENTLOG_H
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
class String8;
class EventLog : public Singleton<EventLog> {
public:
static void logFrameDurations(const String8& window,
const int32_t* durations, size_t numDurations);
protected:
EventLog();
private:
/*
* EventLogBuffer is a helper class to construct an in-memory event log
* tag. In this version the buffer is not dynamic, so write operation can
* fail if there is not enough space in the temporary buffer.
* Once constructed, the buffer can be logger by calling the log()
* method.
*/
class TagBuffer {
enum { STORAGE_MAX_SIZE = 128 };
int32_t mPos;
int32_t mTag;
bool mOverflow;
char mStorage[STORAGE_MAX_SIZE];
public:
TagBuffer(int32_t tag);
// starts list of items
void startList(int8_t count);
// terminates the list
void endList();
// write a 32-bit integer
void writeInt32(int32_t value);
// write a 64-bit integer
void writeInt64(int64_t value);
// write a C string
void writeString8(const String8& value);
// outputs the the buffer to the log
void log();
};
friend class Singleton<EventLog>;
EventLog(const EventLog&);
EventLog& operator =(const EventLog&);
enum { LOGTAG_SF_FRAME_DUR = 60100 };
void doLogFrameDurations(const String8& window, const int32_t* durations,
size_t numDurations);
};
// ---------------------------------------------------------------------------
}// namespace android
// ---------------------------------------------------------------------------
#endif /* ANDROID_SF_EVENTLOG_H */
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