1 /*
2 * Copyright (c) 2012, The Linux Foundation. All rights reserved.
3
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution.
13 * * Neither the name of The Linux Foundation nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "idle_invalidator.h"
31 #include <unistd.h>
32
33 #define II_DEBUG 0
34
35 static const char *threadName = "Invalidator";
36 InvalidatorHandler IdleInvalidator::mHandler = NULL;
37 android::sp<IdleInvalidator> IdleInvalidator::sInstance(0);
38
IdleInvalidator()39 IdleInvalidator::IdleInvalidator(): Thread(false), mHwcContext(0),
40 mSleepAgain(false), mSleepTime(0) {
41 ALOGD_IF(II_DEBUG, "%s", __func__);
42 }
43
init(InvalidatorHandler reg_handler,void * user_data,unsigned int idleSleepTime)44 int IdleInvalidator::init(InvalidatorHandler reg_handler, void* user_data,
45 unsigned int idleSleepTime) {
46 ALOGD_IF(II_DEBUG, "%s", __func__);
47
48 Locker::Autolock _l(mLock);
49 /* store registered handler */
50 mHandler = reg_handler;
51 mHwcContext = user_data;
52 mSleepTime = idleSleepTime; //Time in millis
53 return 0;
54 }
55
threadLoop()56 bool IdleInvalidator::threadLoop() {
57 ALOGD_IF(II_DEBUG, "%s", __func__);
58 usleep(mSleepTime * 500);
59
60 Locker::Autolock _l(mLock);
61 if(mSleepAgain) {
62 //We need to sleep again!
63 mSleepAgain = false;
64 return true;
65 }
66
67 mHandler((void*)mHwcContext);
68 return false;
69 }
70
readyToRun()71 int IdleInvalidator::readyToRun() {
72 ALOGD_IF(II_DEBUG, "%s", __func__);
73 return 0; /*NO_ERROR*/
74 }
75
onFirstRef()76 void IdleInvalidator::onFirstRef() {
77 ALOGD_IF(II_DEBUG, "%s", __func__);
78 }
79
markForSleep()80 void IdleInvalidator::markForSleep() {
81 Locker::Autolock _l(mLock);
82 mSleepAgain = true;
83 //Triggers the threadLoop to run, if not already running.
84 run(threadName, android::PRIORITY_AUDIO);
85 }
86
getInstance()87 IdleInvalidator *IdleInvalidator::getInstance() {
88 ALOGD_IF(II_DEBUG, "%s", __func__);
89 if(sInstance.get() == NULL)
90 sInstance = new IdleInvalidator();
91 return sInstance.get();
92 }
93