f7c0f75275
- switch to simpler and faster internal sequence number, drops a syscall overhead on 32-bit platforms. - add ability to break-out of flushTo loop with filter return -1 allowing in reduction in reader overhead. Change-Id: Ic5cb2b9afa4d9470153971fc9197b07279e2b79d
111 lines
3.4 KiB
C++
111 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2012-2013 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 _LOGD_LOG_TIMES_H__
|
|
#define _LOGD_LOG_TIMES_H__
|
|
|
|
#include <pthread.h>
|
|
#include <time.h>
|
|
#include <sys/types.h>
|
|
#include <sysutils/SocketClient.h>
|
|
#include <utils/List.h>
|
|
#include <log/log.h>
|
|
|
|
class LogReader;
|
|
|
|
class LogTimeEntry {
|
|
static pthread_mutex_t timesLock;
|
|
unsigned int mRefCount;
|
|
bool mRelease;
|
|
bool mError;
|
|
bool threadRunning;
|
|
pthread_cond_t threadTriggeredCondition;
|
|
pthread_t mThread;
|
|
LogReader &mReader;
|
|
static void *threadStart(void *me);
|
|
static void threadStop(void *me);
|
|
const unsigned int mLogMask;
|
|
const pid_t mPid;
|
|
unsigned int skipAhead[LOG_ID_MAX];
|
|
unsigned long mCount;
|
|
unsigned long mTail;
|
|
unsigned long mIndex;
|
|
|
|
public:
|
|
LogTimeEntry(LogReader &reader, SocketClient *client, bool nonBlock,
|
|
unsigned long tail, unsigned int logMask, pid_t pid,
|
|
uint64_t start);
|
|
|
|
SocketClient *mClient;
|
|
uint64_t mStart;
|
|
const bool mNonBlock;
|
|
const uint64_t mEnd; // only relevant if mNonBlock
|
|
|
|
// Protect List manipulations
|
|
static void lock(void) { pthread_mutex_lock(×Lock); }
|
|
static void unlock(void) { pthread_mutex_unlock(×Lock); }
|
|
|
|
void startReader_Locked(void);
|
|
|
|
bool runningReader_Locked(void) const {
|
|
return threadRunning || mRelease || mError || mNonBlock;
|
|
}
|
|
void triggerReader_Locked(void) {
|
|
pthread_cond_signal(&threadTriggeredCondition);
|
|
}
|
|
|
|
void triggerSkip_Locked(log_id_t id, unsigned int skip) { skipAhead[id] = skip; }
|
|
void cleanSkip_Locked(void);
|
|
|
|
// Called after LogTimeEntry removed from list, lock implicitly held
|
|
void release_Locked(void) {
|
|
mRelease = true;
|
|
pthread_cond_signal(&threadTriggeredCondition);
|
|
if (mRefCount || threadRunning) {
|
|
return;
|
|
}
|
|
// No one else is holding a reference to this
|
|
delete this;
|
|
}
|
|
|
|
// Called to mark socket in jeopardy
|
|
void error_Locked(void) { mError = true; }
|
|
void error(void) { lock(); error_Locked(); unlock(); }
|
|
|
|
bool isError_Locked(void) const { return mRelease || mError; }
|
|
|
|
// Mark Used
|
|
// Locking implied, grabbed when protection around loop iteration
|
|
void incRef_Locked(void) { ++mRefCount; }
|
|
|
|
bool owned_Locked(void) const { return mRefCount != 0; }
|
|
|
|
void decRef_Locked(void) {
|
|
if ((mRefCount && --mRefCount) || !mRelease || threadRunning) {
|
|
return;
|
|
}
|
|
// No one else is holding a reference to this
|
|
delete this;
|
|
}
|
|
bool isWatching(log_id_t id) { return (mLogMask & (1<<id)) != 0; }
|
|
// flushTo filter callbacks
|
|
static int FilterFirstPass(const LogBufferElement *element, void *me);
|
|
static int FilterSecondPass(const LogBufferElement *element, void *me);
|
|
};
|
|
|
|
typedef android::List<LogTimeEntry *> LastLogTimes;
|
|
|
|
#endif
|