6661f56add
If there's no child status available immediately,
return 0 without blocking as specified by the standards.
The implementation for non CONFIG_SCHED_HAVE_PARENT case
seems ok in this regard.
I checked the following version of the standard.
I believe it has always been this way though.
The Open Group Base Specifications Issue 7, 2018 edition
IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008)
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| .. | ||
| clock | ||
| environ | ||
| group | ||
| init | ||
| irq | ||
| module | ||
| mqueue | ||
| paging | ||
| pthread | ||
| sched | ||
| semaphore | ||
| signal | ||
| task | ||
| timer | ||
| wdog | ||
| wqueue | ||
| Kconfig | ||
| Makefile | ||