ctime

python GIL :全局解释器

匿名 (未验证) 提交于 2019-12-02 22:56:40
cpython 解释器中存在一个GIL(全局解释器锁),无论多少个线程、多少颗cpu 他的作用就是保证同一时刻只有一个线程可以执行代码,因此造成了我们使用多线程的时候无法实现并行。 因为有GIL的存在、所以同一时刻只能有一个线程被CPU执行 任务:IO 密集型:可以采用多线程(多进程+协成) 计算密集型:python不适用 (1)IO 密集型、CPU会是实现自动切换 提高工作效率 def ListenMusic(name): print ( " beging listening to %s,%s " % (name,time.ctime())) time.sleep( 5 ) print ( " end listening %s " % time.ctime()) def Recordlog(name): print ( " beging recoding to %s,%s " % (name,time.ctime())) time.sleep( 5 ) print ( " end recoding %s " % time.ctime()) if __name__ == ‘ __main__ ‘ : threads = [] t1 =threading.Thread(target=ListenMusic,args=( " 凤凰传奇 " ,)) t2 =threading

Python 3标准库第四章

折月煮酒 提交于 2019-12-02 19:06:01
第四章 日期和时间 不同于int、float和str,Python没有包含对应日期和时间的原生类型,不过提供了3个相应的模块,可以采用多种表示来管理日期和时间值。 time模块由底层C库提供与时间相关的函数。它包含一些函数,可以用于获取时钟时间和处理器运行时间,还提供了基本的解析和字符串格式化工具。 datetime模块为日期、时间以及日期时间提供了一个更高层接口。datetime中的类支持算术、比较和时区配置。 calendar模块可以创建周、月和年的格式化表示。它还可以用来计算重复事件,给定日期是星期几,以及其他基于日历的值。 4.1 time:时钟时间 time模块允许访问多种类型的时钟,分别用于不同的用途。标准系统调用(如time())会报告系统"墙上时钟"时间。monitonic()时钟可以用于测量一个 长时间运行的进程的耗用时间(elapsed time),因为即使系统时间有改变,也能保证这个时钟不会逆转。对于性能测试,perf_counter()允许访问有最高可用 分辨率的时钟,这使得短时间测量更为准确。CPU时间可以通过clock()得到,process_time()会返回处理器时间和系统时间的组合结果。 ---------------------------------------------------------------------------------

C++ Time returned is two hours out

旧时模样 提交于 2019-12-02 01:45:41
问题 Bit of a c++ newbie so here we go; I have a method that is parsing a date/time, however that date/time is passed to me always with 00:00:00 as the hh:mm:ss. As such i want to add in the values of the current systime in place of those values. I have methods that do this, and the first method is returning the correct time in UTC format. bool CTRHTranslationRTNS::ParseDateSysTime(const char* pszString, time_t& tValue) { ASSERT(pszString != NULL); // DateTime fields. enum { YEAR, MONTH, DAY,

C++ Time returned is two hours out

泄露秘密 提交于 2019-12-01 22:58:50
Bit of a c++ newbie so here we go; I have a method that is parsing a date/time, however that date/time is passed to me always with 00:00:00 as the hh:mm:ss. As such i want to add in the values of the current systime in place of those values. I have methods that do this, and the first method is returning the correct time in UTC format. bool CTRHTranslationRTNS::ParseDateSysTime(const char* pszString, time_t& tValue) { ASSERT(pszString != NULL); // DateTime fields. enum { YEAR, MONTH, DAY, HOURS, MINS, SECS, NUM_FIELDS }; CStringArray astrFields; // Split the string into the date and time fields

Python多线程应用于自动化测试

流过昼夜 提交于 2019-12-01 11:55:44
Python多线程应用于自动化测试 将多线程在测试巧妙地应用,确实会带来很多好处,并且这是充分利用机器资源执行高效率测试很好的方式 # -*- coding: utf-8 -*- import threading from time import ctime import time from selenium import webdriver def test_search(browser, word): print("Start search at: %s\n" % ctime()) print("Browser is: %s\n" % browser) if browser == 'ie': browser_driver = webdriver.Ie() elif browser == 'chrome': browser_driver = webdriver.Chrome() elif browser != 'ie' and browser != 'chrome': print("browser 参数非'ie 或 chrome'启动Fiefox") browser_driver = webdriver.Firefox() browser_driver.get("http://www.baidu.com") browser_driver.find_element_by_id(

Is it possible to insert the build time into an application?

一世执手 提交于 2019-12-01 10:59:00
A game has this: I'm curious to whether this was the actual build time, and sure enough, the 'File Last Modified' date of Crysis.exe (the program) is 03/31/2009, 01:40 . Sure, the developer could easily have manually inputted that value, and built the application in under a minute, but I'm curious to whether it is actually possible to input the current date/time (to the nearest second) when the application is actually building. This would have many advantages, including easy identification of different builds of the application. Is this possible? Yes the time of built is provided by the __TIME

shell脚本之发布

孤者浪人 提交于 2019-11-30 21:52:33
#!/bin/bash PATH=/application/jdk/bin:/application/jdk/jre/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin REMOTE=/home/qroot/shangxian LOCAL_HOST=/home/qroot/shangxian LOG_CDATE='date "+%Y-%m-%d"' LOG_CTIME='date "+%H:%M:%S"' CDATE=$(date "+%Y-%m-%d") CTIME=$(date "+%H-%M-%S") SHELL_NAME="deployment_bigdata.sh" SHELL_DIR="/home/qroot" SHELL_LOG="${SHELL_DIR}/${SHELL_NAME}.log" LOCK_FILE="/tmp/deploy_bigdata.lock" #mkdir -p /home/qroot/shangxian/bigdata/{new_word,old_word,tmp,formal,config/{nginx,replace}} usage(){ echo "USAGE:$0 AGE{bigdata [bigdata.tar.gz]|10.28.53.{192,223}]

Formatting Unix timestamp with ctime in c

余生长醉 提交于 2019-11-30 20:33:18
I'm trying to format a 10-digit Unix time stamp (currently a string) using ctime. However, ctime() expects a parameter of type time_t, not a string. What must I do before I can use ctime? In other words, can I easily convert the string into a time_t? You're saying you have something like 1346426869 as a string and want it to be a time_t? time_t raw_time = atoi("1346426869"); printf("current time is %s",ctime(&raw_time)); > current time is Fri Aug 31 11:27:49 2012 The time_t type is just an integer. It is the number of seconds since the Epoch. You'll need to parse the string first. Start here:

Addition some interval to tm structs

北城以北 提交于 2019-11-30 18:24:08
I have one struct tm . And I need to add some fixed interval (given in xx years, xx months, xx days) to the tm struct. Is there any standard function to do this? The compiler I use is MSVC 2005 on Windows XP. There are two functions which convert time formats: mktime() which converts struct tm (representing local time) to time_t . localtime() which converts time_t to local time in struct tm . Interesing is the first one, which accepts out-of-range struct member values and as a side-product of conversion set them (and all others) appropriately. This may be used to correct field data values

用CTime类得到当前日期 时间

廉价感情. 提交于 2019-11-30 07:00:16
(1)定义一个CTime类的对象CTime time; (2)得到当前时间time = CTime::GetCurrentTime(); (3)Get Year(),GetMonth(),GetDay(),GetHour(),GetMinute(),GetScond(),GetDayOfWeek(),返回类型(int)对应项目 (4)将当前时间格式化CString date=time.Format(“%Y-%m-%d %H:%M:%S%W-%A”); 说明:   (1)结果为:2019-9-23 08:50:55 41-Friday   (2)格式符号说明     %a------星期(缩写英文),如Fri;     %A------星期(全写英文),如Friday;     %b------月份(缩写英文),如Oct     %B------月份(全写英文),如October     %c------月/日/年 时:分:秒,如9/23/19 08:54:36     %d------日期(1~31)     %H------时(24小时制)(0~23)     %I------时(12小时制) (0~12)     %j------一年当中的第几天,(1~366)     %m------月份(数字1~12)     %M------分(0~59)     %p-----