Sleep for milliseconds

Question

I know the POSIX sleep x  function makes the program sleep for x seconds  Is there a function to make the program sleep for x milliseconds in C

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From C  14 using std and also its numeric literals    include  lt chrono gt   include  lt thread gt   using namespace std  chrono   std  this thread  sleep for 123ms

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include  lt chrono gt   include  lt thread gt   std  this thread  sleep for std  chrono  milliseconds 1000       sleep for 1 second  Remember to import the two headers

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In Unix you can use usleep    In Windows there is Sleep

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for C use     in gcc   include  lt windows h gt  then use Sleep        Sleep   with capital S  not sleep   with s     Sleep 1000  is 1 sec     maybe  clang supports sleep    sleep 1  is for 1 sec time delay wait

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Use Boost asynchronous input output threads  sleep for x milliseconds    include  lt boost thread hpp gt   include  lt boost asio hpp gt   boost  thread  sleep boost  get system time     boost  posix time  millisec 1000

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include  lt windows h gt    Syntax    Sleep      in DWORD dwMilliseconds        Usage    Sleep  1000     Sleeps for 1000 ms or 1 sec

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The question is old  but I managed to figure out a simple way to have this in my app  You can create a C C   macro as shown below use it    ifndef MACROS H  define MACROS H   include  lt unistd h gt    define msleep X  usleep X   1000    endif    MACROS H

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Note that there is no standard C API for milliseconds  so  on Unix  you will have to settle for usleep  which accepts microseconds    include  lt unistd h gt   unsigned int microseconds      usleep microseconds

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Depending on your platform you may have usleep or nanosleep available  usleep is deprecated and has been deleted from the most recent POSIX standard  nanosleep is preferred

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To stay portable you could use Boost  Thread for sleeping    include  lt boost thread thread hpp gt   int main           waits 2 seconds     boost  this thread  sleep  boost  posix time  seconds 1         boost  this thread  sleep  boost  posix time  milliseconds 1000          return 0      This answer is a duplicate and has been posted in this question before  Perhaps you could find some usable answers there too

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nanosleep is a better choice than usleep - it is more resilient against interrupts

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On platforms with the select function  POSIX  Linux  and Windows  you could do   void sleep unsigned long msec        timeval delay    msec   1000  msec   1000   1000       int rc     select 0  NULL  NULL  NULL   amp delay       if -1    rc               Handle signals by continuing to sleep or return immediately            However  there are better alternatives available nowadays

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Why don t use time h library  Runs on Windows and POSIX systems    include  lt iostream gt   include  lt time h gt   using namespace std   void sleepcp int milliseconds    void sleepcp int milliseconds     Cross-platform sleep function       clock t time end      time end   clock     milliseconds   CLOCKS PER SEC 1000      while  clock    lt  time end                int main         cout  lt  lt   Hi  At the count to 3  I ll die       lt  lt  endl      sleepcp 3000       cout  lt  lt   urrrrggghhhh    lt  lt  endl      Corrected code - now CPU stays in IDLE state  2014 05 24     include  lt iostream gt   ifdef  WIN32      include  lt windows h gt   else      include  lt unistd h gt   endif     WIN32  using namespace std   void sleepcp int milliseconds    void sleepcp int milliseconds     Cross-platform sleep function        ifdef  WIN32         Sleep milliseconds        else         usleep milliseconds   1000        endif     WIN32   int main         cout  lt  lt   Hi  At the count to 3  I ll die       lt  lt  endl      sleepcp 3000       cout  lt  lt   urrrrggghhhh    lt  lt  endl

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The way to sleep your program in C   is the Sleep int  method  The header file for it is  include  windows h    For example    include  stdafx h   include  windows h   include  iostream  using namespace std   int main         int x   6000      Sleep x       cout  lt  lt   6 seconds have passed   lt  lt  endl      return 0      The time it sleeps is measured in milliseconds and has no limit   Second   1000 milliseconds Minute   60000 milliseconds Hour   3600000 milliseconds

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Select call is a way of having more precision  sleep time can be specified in nanoseconds

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If using MS Visual C   10 0  you can do this with standard library facilities   Concurrency  wait milliseconds     you will need    include  lt concrt h gt

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In C  11  you can do this with standard library facilities    include  lt chrono gt   include  lt thread gt      std  this thread  sleep for std  chrono  milliseconds x      Clear and readable  no more need to guess at what units the sleep   function takes

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As a Win32 replacement for POSIX systems   void Sleep unsigned int milliseconds        usleep milliseconds   1000      while  1        printf           Sleep  unsigned int  1000 0f 20 0f       20 fps

[c++] Sleep for milliseconds

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