19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * System clock functions. 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#if HAVE_ANDROID_OS 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <linux/ioctl.h> 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <linux/rtc.h> 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/Atomic.h> 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <linux/android_alarm.h> 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#endif 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <sys/time.h> 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <limits.h> 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <fcntl.h> 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <errno.h> 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <string.h> 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/SystemClock.h> 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <utils/Timers.h> 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#define LOG_TAG "SystemClock" 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "utils/Log.h" 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectnamespace android { 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Set the current time. This only works when running as root. 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint setCurrentTimeMillis(int64_t millis) 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#if WIN32 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // not implemented 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#else 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project struct timeval tv; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#if HAVE_ANDROID_OS 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project struct timespec ts; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fd; 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int res; 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#endif 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int ret = 0; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (millis <= 0 || millis / 1000LL >= INT_MAX) { 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tv.tv_sec = (time_t) (millis / 1000LL); 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tv.tv_usec = (suseconds_t) ((millis % 1000LL) * 1000LL); 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGD("Setting time of day to sec=%d\n", (int) tv.tv_sec); 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#if HAVE_ANDROID_OS 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project fd = open("/dev/alarm", O_RDWR); 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(fd < 0) { 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGW("Unable to open alarm driver: %s\n", strerror(errno)); 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return -1; 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ts.tv_sec = tv.tv_sec; 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ts.tv_nsec = tv.tv_usec * 1000; 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project res = ioctl(fd, ANDROID_ALARM_SET_RTC, &ts); 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if(res < 0) { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGW("Unable to set rtc to %ld: %s\n", tv.tv_sec, strerror(errno)); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ret = -1; 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project close(fd); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#else 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (settimeofday(&tv, NULL) != 0) { 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project LOGW("Unable to set clock to %d.%d: %s\n", 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (int) tv.tv_sec, (int) tv.tv_usec, strerror(errno)); 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ret = -1; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#endif 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return ret; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#endif // WIN32 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * native public static long uptimeMillis(); 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint64_t uptimeMillis() 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int64_t when = systemTime(SYSTEM_TIME_MONOTONIC); 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int64_t) nanoseconds_to_milliseconds(when); 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * native public static long elapsedRealtime(); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectint64_t elapsedRealtime() 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project{ 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#if HAVE_ANDROID_OS 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static int s_fd = -1; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (s_fd == -1) { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fd = open("/dev/alarm", O_RDONLY); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (android_atomic_cmpxchg(-1, fd, &s_fd)) { 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project close(fd); 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project struct timespec ts; 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int result = ioctl(s_fd, 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ANDROID_ALARM_GET_TIME(ANDROID_ALARM_ELAPSED_REALTIME), &ts); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (result == 0) { 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int64_t when = seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec; 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int64_t) nanoseconds_to_milliseconds(when); 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // XXX: there was an error, probably because the driver didn't 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // exist ... this should return 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // a real error, like an exception! 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int64_t when = systemTime(SYSTEM_TIME_MONOTONIC); 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int64_t) nanoseconds_to_milliseconds(when); 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#else 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int64_t when = systemTime(SYSTEM_TIME_MONOTONIC); 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (int64_t) nanoseconds_to_milliseconds(when); 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#endif 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; // namespace android 140