args.system_clock_counter = (uint64_t)timespec_to_ns(&time);/* Since the counter is in nano-seconds we use 1GHz frequency */args.system_clock_freq =1000000000;if(copy_to_user(arg, &args,sizeof(args)))return-EFAULT;return0; } 开发者ID:383530895,项目名称:linux,代码行数:32,代码来源:...
曾经有一段时间,升级 Linux 内核让很多用户打心里有所畏惧。在那个时候,升级内核包含了很多步骤,也...
tv_nsec = rem; #返回timespec64 结构体给用户使用 return ts; } struct timeval ns_to_timeval(const s64 nsec)用于将纳秒转成timeval格式返回给用户其源码分析如下: struct timeval ns_to_timeval(const s64 nsec) { #首先将形参的纳秒转成timespec struct timespec ts = ns_to_timespec(nsec); struct ...
其源码分析如下:structtimevalns_to_timeval(consts64 nsec){#首先将形参的纳秒转成timespecstructtimespec ts = ns_to_timespec(nsec);structtimeval tv;#然后通过timespec的结构体成员变量赋值给timeval成员变量.tv.tv_sec = ts.tv_sec; tv.tv_usec = (suseconds_t) ts.tv_nsec /1000;#返回timeval 给用户使...
struct timeval ns_to_timeval(const s64 nsec) { #首先将形参的纳秒转成timespec struct timespec ts = ns_to_timespec(nsec); struct timeval tv; #然后通过timespec的结构体成员变量赋值给timeval成员变量. tv.tv_sec = ts.tv_sec; tv.tv_usec = (suseconds_t) ts.tv_nsec / 1000; ...
pthread: timespec.tv_nsec must be less then 1000000000 ns 0e990d6 This was referenced Jul 14, 2024 [SDL2] testatomic occasionally segfaults #8576 Closed [SDL2] pthread: timespec.tv_nsec must be less then 1000000000 ns #10263 Merged slouken approved these changes Jul 14, 2024 View...
decodenetnum.c dolfptoa.c emalloc.c getopt.c hextolfp.c initnetwork.c isc_interfaceiter.c isc_net.c lib_strbuf.c macencrypt.c msyslog.c ntp_c.c ntp_calendar.c ntp_endian.c ntp_random.c numtoa.c prettydate.c pymodule-mac.c ...
TIMESPEC “TS01” = PERIOD “clk0” 10.0 ns; 定义派生时钟 clk180,其相位与主时钟相差 180°: TIMESPEC “TS02” = PERIOD “clk180” TS01 PHASE + 5.0 ns; 定义派生时钟 clk180_2,其周期为主时钟的 1/2,并延迟 2.5ns: TIMESPEC “TS03” = PERIOD “clk180_2” TS01 /2 PHASE + 2.5 ns;...
此结构体用于内核记录时间,其中字段tv_sec的单位是秒(s),表示整秒数,字段tv_nsec的单位是纳秒(ns),表示不足一秒的部分,在此其取值范围是0~999999999。 https://deepinout.com/linux-kernel-api/linux-kernel-api-timing-mechanism/linux-kernel-api-ns_to_timespec.html...
I am trying to measure the running time of a function timespec time1, time2, time3; clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &time2); callFunction(); clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &time3); time1=diff(time2,time3);