Re: select(0,NULL,NULL,NULL,&t1) used for delay

[Christopher Friesen]

Alex Riesen wrote:

> Why don't you just use nanosleep(2) (or usleep)?

I can think of one main reason...existing code.  Also, nanosleep() 
rounds up excessively in many kernel versions, so that a request to 
sleep for less than 1 tick ends up sleeping for 2 ticks.

The select() man page explicitly mentions this usage;

"Some code calls select with all three sets empty, n zero, and a 
non-null timeout as a fairly portable way to sleep with subsecond 
precision."

Chris

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