structtimeval{__time_ttv_sec;/* Seconds. 秒*/__suseconds_ttv_usec;/* Microseconds. 微秒*/};timezone结构体：structtimezone{inttz_minuteswest;/* Minutes west of GMT. 和Greenwich时间差了多少分钟 */inttz_dsttime;/* Nonzero if
structtimeval{__time_ttv_sec;/* Seconds. 秒*/__suseconds_ttv_usec;/* Microseconds. 微秒*/...
Thegettimeofday()function returns the currenttime inwhenin seconds and microseconds, since the Unix Epoch, 00:00:00 January 1, 1970 Coordinated UniversalTime (UTC) (formerly known as Greenwich MeanTime (GMT)). Returns: 0 for success, or -1 if an error occurs (errnois set). Errors: EFAULT...
struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec; /* microseconds */ }; On Linux it can be done like this : /** * Get time difference in microseconds * */ #include <stdio.h> #include <sys/time.h> double time_diff(struct timeval x , struct timeval y); int...
Select函数原型为: int select(int numfds,fd_set *readfds,fd_set *writefds, fd_set *exceptfds,struct timeval *timeout); 其中readfds、writefds、exceptfds分别是被select()监视的读、写和异常处理的文件描述符集合。如果你希望确定是否可以从标准输入和某个socket描述符读取数据,你只需要将标准输入的文件...
vm.profile.duration-secs", profileDuration, "-Xprofile-duration:"); // Polling interval during profile run (microseconds). parseRuntime("dalvik.vm.profile.interval-us", profileInterval, "-Xprofile-interval:"); // Coefficient for period backoff. The the period is multiplied // by this ...
CanardRxTransfertransfer;constint8_tresult=canardRxAccept(&canard,rx_timestamp_usec,// When the frame was received, in microseconds.&received_frame,// The CAN frame received from the bus.redundant_interface_index,// If the transport is not redundant, use 0.&transfer,NULL);if(result<0) {/...
Instrument - Time Profiler Time Profiler模板使用Time Profiler工具对系统CPU上运行的进程执行低开销,基于时间的采样,显示App对多核CPU和线程的使用情况。 随着时间的推移,使用多个核心和线程的效率越高,App的性能就越好。 不熟悉的同学,可以参考官方文档Track CPU core and thread use ...
CorePartitionOS is based in a total novel approach, it relays entirely on ticks, but now, you can define what tick means, CoreParittionOS will allow you to use, seconds, microseconds, milliseconds or any measurement you want, just by implementing Cpx_GetCurrentTicks() and Cpx_SleepTicks. ...
in output_streams */ int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units uint64_t limit_filesize; /* filesize limit expressed in bytes */ int shortest; ...