From 451bb0670ddd5f5c0606410f2b5f51733119645d Mon Sep 17 00:00:00 2001 From: rpj Date: Sat, 3 Apr 1999 22:05:39 +0000 Subject: ./ChangeLog Sun Apr 4 11:05:57 1999 Ross Johnson * sched.c (sched.h): Include. * sched.h: New file for POSIX 1b scheduling. * pthread.h: Move opaque structures to implement.h; move sched_* prototypes out and into sched.h. * implement.h: Add opaque structures from pthread.h. * sched.c (sched_yield): New function. * condvar.c (_pthread_sem_*): Rename to sem_*; except for _pthread_sem_timedwait which is an private function. Sat Apr 3 23:28:00 1999 Ross Johnson * Makefile.in (OBJS): Add errno.o. Fri Apr 2 11:08:50 1999 Ross Johnson * implement.h (_pthread_sem_*): Remove prototypes now defined in semaphore.h. * pthread.h (sempahore.h): Include. * semaphore.h: New file for POSIX 1b semaphores. * pthread.h (_pthread_sem_t): Change to sem_t. * semaphore.c (_pthread_sem_*): Change to sem_*; these functions will be exported from the library; set errno on error. - John Bossom (_pthread_sem_timedwait): Moved to private.c. * private.c (_pthread_sem_timedwait): Moved from semaphore.c; set errno on error. * errno.c (_errno): New file. New function. - John Bossom * pthread.h (pthread_t_): Add per-thread errno element. tests/ChangeLog Sun Apr 4 12:04:28 1999 Ross Johnson * tsd1.c (mythread): Change Sleep(0) to sched_yield(). (sched.h): Include. * condvar3.c (mythread): Remove redundant Sleep(). * runtest.bat: Re-organised to make more informative. --- sched.c | 34 ++++++++++++++++++++++++++++++++-- 1 file changed, 32 insertions(+), 2 deletions(-) (limited to 'sched.c') diff --git a/sched.c b/sched.c index c07698b..6d53d9b 100644 --- a/sched.c +++ b/sched.c @@ -25,8 +25,7 @@ #define ENOSUP 0 -#include - +#include "sched.h" #include "pthread.h" #include "implement.h" @@ -150,3 +149,34 @@ int sched_get_priority_min(int policy) /* This is independent of scheduling policy in Win32. */ return THREAD_PRIORITY_LOWEST; } + +int sched_yield(void) + /* + * ------------------------------------------------------ + * DOCPUBLIC + * This function indicates that the calling thread is + * willing to give up some time slices to other threads. + * + * PARAMETERS + * N/A + * + * + * DESCRIPTION + * This function indicates that the calling thread is + * willing to give up some time slices to other threads. + * NOTE: Since this is part of POSIX 1003.1b + * (realtime extensions), it is defined as returning + * -1 if an error occurs and sets errno to the actual + * error. + * + * RESULTS + * 0 successfully created semaphore, + * ENOSYS sched_yield not supported, + * + * ------------------------------------------------------ + */ +{ + Sleep(0); + + return 0; +} -- cgit v1.2.3