Suspend a calling thread for a given length of time
#include <unistd.h> unsigned int delay( unsigned int duration );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The delay() function suspends the calling thread for duration milliseconds.
0 for success, or the number of unslept milliseconds if interrupted by a signal.
#include <unistd.h> #include <stdlib.h> void play_sound( void ) { … } void stop_sound( void ) { … } int main( void ) { play_sound(); delay( 500 ); /* delay for 1/2 second */ stop_sound(); return EXIT_SUCCESS; }
Safety: | |
---|---|
Cancellation point | Yes |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |