| /* |
| * 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. |
| */ |
| /****************************************************************************** |
| * |
| * The original Work has been changed by NXP Semiconductors. |
| * |
| * Copyright (C) 2015 NXP Semiconductors |
| * |
| * 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. |
| * |
| ******************************************************************************/ |
| /* |
| * Asynchronous interval timer. |
| */ |
| |
| #include "IntervalTimer.h" |
| #include <string.h> |
| |
| #include <android-base/stringprintf.h> |
| #include <base/logging.h> |
| |
| using android::base::StringPrintf; |
| |
| IntervalTimer::IntervalTimer() { |
| mTimerId = 0; |
| mCb = NULL; |
| } |
| |
| bool IntervalTimer::set(int ms, TIMER_FUNC cb) { |
| if (mTimerId == 0) { |
| if (cb == NULL) return false; |
| |
| if (!create(cb)) return false; |
| } |
| if (cb != mCb) { |
| kill(); |
| if (!create(cb)) return false; |
| } |
| |
| int stat = 0; |
| struct itimerspec ts; |
| ts.it_value.tv_sec = ms / 1000; |
| ts.it_value.tv_nsec = (ms % 1000) * 1000000; |
| |
| ts.it_interval.tv_sec = 0; |
| ts.it_interval.tv_nsec = 0; |
| |
| stat = timer_settime(mTimerId, 0, &ts, 0); |
| if (stat == -1) LOG(ERROR) << StringPrintf("fail set timer"); |
| return stat == 0; |
| } |
| |
| IntervalTimer::~IntervalTimer() { kill(); } |
| |
| void IntervalTimer::kill() { |
| if (mTimerId == 0) return; |
| |
| timer_delete(mTimerId); |
| mTimerId = 0; |
| mCb = NULL; |
| } |
| |
| bool IntervalTimer::create(TIMER_FUNC cb) { |
| struct sigevent se; |
| memset(&se, 0, sizeof(struct sigevent)); |
| int stat = 0; |
| |
| /* |
| * Set the sigevent structure to cause the signal to be |
| * delivered by creating a new thread. |
| */ |
| se.sigev_notify = SIGEV_THREAD; |
| se.sigev_value.sival_ptr = &mTimerId; |
| se.sigev_notify_function = cb; |
| se.sigev_notify_attributes = NULL; |
| se.sigev_signo = 0; |
| mCb = cb; |
| stat = timer_create(CLOCK_MONOTONIC, &se, &mTimerId); |
| if (stat == -1) LOG(ERROR) << StringPrintf("fail create timer"); |
| return stat == 0; |
| } |
| |
| bool IntervalTimer::isRunning(void) { |
| if (mTimerId == 0) return false; |
| |
| int stat = 0; |
| struct itimerspec ts; |
| |
| stat = timer_gettime(mTimerId, &ts); |
| if (stat != 0) return false; |
| return ((ts.it_value.tv_sec > 0 || ts.it_value.tv_nsec > 0) ? true : false); |
| } |