1秒(Second)=103毫秒(millisecond)=106微妙(microsecond)=109纳秒(nanosecond)(1)(1)1秒(Second)=103毫秒(millisecond)=106微妙(microsecond)=109纳秒(nanosecond) timespec类型结构如下: struct timespec { std::time_t tv_sec; long tv_nsec; }; 可以看到,这里是在time_t之外,增加了一个tv_nsec来表达纳秒的...
默认是nanosecond 级精度,是系统调用(_sys_clock_gettime()),会有开销。调用频繁的话,可能造成损失性能。但是Linux 2.6.32后可以指定参数CLOCK_REALTIME_COARSE和CLOCK_MONOTONIC_COARSE,粗粒度地获取时间,而不需要发生上下文切换(和gettimeofday()一样也是vdso技术,https://access.redhat.com/documentation/en-us/red...
默认是nanosecond 级精度,是系统调用(_sys_clock_gettime()),会有开销。调用频繁的话,可能造成损失性能。但是Linux 2.6.32后可以指定参数CLOCK_REALTIME_COARSE和CLOCK_MONOTONIC_COARSE,粗粒度地获取时间,而不需要发生上下文切换(和gettimeofday()一样也是vdso技术,https://access.redhat.com/documentation/en-us/red...
clock_gettime() 。默认是nanosecond 级精度,是系统调用(_sys_clock_gettime()),会有开销。调用频繁的话,可能造成损失性能。但是Linux 2.6.32后可以指定参数CLOCK_REALTIME_COARSE和CLOCK_MONOTONIC_COARSE,粗粒度地获取时间,而不需要发生上下文切换(和gettimeofday()一样也是...
Nanosecond study of fluorescently labeled troponin C 来自 NCBI 喜欢 0 阅读量: 28 作者:CK Wang,R Liao,HC Cheung 摘要: The time-resolved extrinsic fluorescence of rabbit skeletal troponin C was studied with the protein labeled at Cys-98 with N-(iodoacetyl)-N'-(5-sulfo-1-naphthyl)...
Nanolog: Nanolog is an extremely performant nanosecond scale logging system for C++ that exposes a simple printf-like API. quill: Asynchronous Low Latency C++ Logging Library reckless: Reckless logging. Low-latency, high-throughput, asynchronous logging library for C++. spdlog: Fast C++ logging ...
long tv_nsec; /*nanosecond*/ 1. 2. 3. 4. 该结构体有两个成员变量:tv_sec表示秒,tv_nsec表示纳秒。 4.timeval结构体 struct timeval { time_t tv_sec; /*seconds*/ suseconds tv_usec; /*microseconds*/ 1. 2. 3. 4. 该结构体有两个成员变量:tv_sec表示秒,tv_usec表示微秒。
The epilayers were subsequently laser annealed by a single pulse of a nanosecond excimer KrF laser. It was shown that the hydrophobic of the pristine sample became hydrophilic after laser treatment. XPS was employed to study the effect of laser treatment on surface stoichiometry of the epilayers. ...
See Also A static data member storing the number of 100-nanosecond intervals that make up one minute. 复制 static const ULONGLONG Minute = Second* 60; Example See the example for CFileTime::Millisecond. Requirements Header: atltime.h See Also Concepts CFileTime Class CFileTime Members中文...
We successfully demonstrate the generation of nanosecond pulses in a passively Erbium-doped fiber laser (EDFL) by an Ag2S-based saturable absorbeer (SA). A simple and low-cost liquid phase exfoliation (LPE) method is used to fabricate the SA. Through LPE, the SA element is coated onto a ...