SubscriberTest() {// Setup a one-shot timer to initialize the node after a brief// delay so that /rosout is always fully initialized.ROS_INFO("Starting initialization timer..."); init_timer_ = nh_.createWallTimer(ros::WallDuration(1.0), &SubscriberTest::initialize,this,true); } 开发者...
dispatch_walltime dispatch_once dispatch_once_f dispatch_apply dispatch_apply_f dispatch_barrier_async dispatch_barrier_async_f dispatch_barrier_sync dispatch_barrier_sync_f 管理一组任务 概述 dispatch_group_create dispatch_group_enter dispatch_group_leave dispatch_group_async dispat...
每来一个timer interrupt,也需要去更新xtime。 wall time不一定是单调递增的。因为wall time是指现实中的实际时间,如果系统要与网络中某个节点时间同步、或者由系统管理员觉得这个wall time与现实时间不一致,有可能任意的改变这个wall time。 timerfd_settime inttimerfd_settime(intfd,intflags,conststructitimerspec ...
dispatch_walltime dispatch_once dispatch_once_f dispatch_apply dispatch_apply_f dispatch_barrier_async dispatch_barrier_async_f dispatch_barrier_sync dispatch_barrier_sync_f 管理一组任务 概述 dispatch_group_create dispatch_group_enter dispatch_group_leave dispatch_group_async disp...
参数:dispatch_source_set_timer 中第二个参数,当我们使用 dispatch_time 或者 DISPATCH_TIME_NOW 时,系统会使用默认时钟来进行计时。然而当系统休眠的时候,默认时钟是不走的,也就会导致计时器停止。使用 dispatch_walltime 可以让计时器按照真实时间间隔进行计时;第三个参数:interval:计时器间隔多次时间执行;第四个...
Time{wall:0x0, ext:0, loc:(*time.Location)(nil)}, fifo:(*os.File)(nil)} runner实例为 &main.runner{init:true, enableSubreaper:true, shouldDestroy:true, detach:false, listenFDs:[]*os.File{}, preserveFDs:0, pidFile:"", consoleSocket:"", container:(*...
Wall time: 0.19 sIn [562]: %time method2 = [x for x in strings if x[:3] == 'foo'] CPU times: user 0.09 s, sys: 0.00 s, total: 0.09 s Wall time: 0.09 s ```Wall time(wall-clock time的简写)是主要关注的。第一个方法是第二个方法的两倍多,但是这种测量方法...
严重: The web application [/xxx] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@3278f]) and a value of type [com.alibaba.druid.wall.spi.WallVisitorUtils.WallTopStatementContext] (value [com.alibaba.druid.wall.spi.WallVisitorUtils$WallTopStateme...
Time{wall:0x0, ext:0, loc:(*time.Location)(nil)}, fifo:(*os.File)(nil)} runner实例为 &main.runner{init:true, enableSubreaper:true, shouldDestroy:true, detach:false, listenFDs:[]*os.File{}, preserveFDs:0, pidFile:"", consoleSocket:"", container:(*...
@ohos.wallpaper (壁纸) @ohos.web.webview (Webview) Console (控制台) Timer (定时器) application AccessibilityExtensionContext (辅助功能扩展上下文) 设备管理 @ohos.batteryInfo (电量信息) @ohos.deviceInfo (设备信息) @ohos.geoLocationManager (位置服务) @ohos.mu...