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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-07-28 18:03:20 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-07-28 18:03:20 +0000 |
| commit | f94e76ba023ad531db5a27c6f974fab5cb5f320b (patch) | |
| tree | ae1920dcc37d4ae66c39348c054e292e542f9c75 /c | |
| parent | Added information on using objcopy to produce IEEE-695 format. (diff) | |
| download | rtems-f94e76ba023ad531db5a27c6f974fab5cb5f320b.tar.bz2 | |
Fix after this report from Peter Pointner <pr@schenk.isar.de>:
Problem: a posix thread which is created by
pthread_attr_init(&tattr);
pthread_attr_setinheritsched(&tattr, PTHREAD_EXPLICIT_SCHED);
pthread_attr_setschedpolicy(&tattr, SCHED_RR);
pthread_create(&th, &tattr, func, arg);
has a first timeslice of 2^32 ticks (changing a running thread to
SCHED_RR id ok).
I use RTEMS-4.0.0. I am not sure if the problem exists in the current CVS
head revision. If it's not fixed, the patch at the end should do it.
Peter
--- pthreadcreate.c.orig Wed Jul 28 14:45:58 1999
+++ pthreadcreate.c Wed Jul 28 15:06:09 1999
@@ -199,6 +199,10 @@
api->schedpolicy = schedpolicy;
api->schedparam = schedparam;
+ if ( schedpolicy == SCHED_RR ) {
+ the_thread->cpu_time_budget = _Thread_Ticks_per_timeslice;
+ }
+
/*
* This insures we evaluate the process-wide signals pending when we
* first run.
Diffstat (limited to '')
| -rw-r--r-- | c/src/exec/score/src/threadinitialize.c | 12 | ||||
| -rw-r--r-- | cpukit/score/src/threadinitialize.c | 12 |
2 files changed, 24 insertions, 0 deletions
diff --git a/c/src/exec/score/src/threadinitialize.c b/c/src/exec/score/src/threadinitialize.c index 3188cfb438..28cfa324bc 100644 --- a/c/src/exec/score/src/threadinitialize.c +++ b/c/src/exec/score/src/threadinitialize.c @@ -137,6 +137,18 @@ boolean _Thread_Initialize( the_thread->Start.is_preemptible = is_preemptible; the_thread->Start.budget_algorithm = budget_algorithm; the_thread->Start.budget_callout = budget_callout; + + switch ( budget_algorithm ) { + case THREAD_CPU_BUDGET_ALGORITHM_NONE: + case THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE: + break; + case THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE: + the_thread->cpu_time_budget = _Thread_Ticks_per_timeslice; + break; + case THREAD_CPU_BUDGET_ALGORITHM_CALLOUT: + break; + } + the_thread->Start.isr_level = isr_level; the_thread->current_state = STATES_DORMANT; diff --git a/cpukit/score/src/threadinitialize.c b/cpukit/score/src/threadinitialize.c index 3188cfb438..28cfa324bc 100644 --- a/cpukit/score/src/threadinitialize.c +++ b/cpukit/score/src/threadinitialize.c @@ -137,6 +137,18 @@ boolean _Thread_Initialize( the_thread->Start.is_preemptible = is_preemptible; the_thread->Start.budget_algorithm = budget_algorithm; the_thread->Start.budget_callout = budget_callout; + + switch ( budget_algorithm ) { + case THREAD_CPU_BUDGET_ALGORITHM_NONE: + case THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE: + break; + case THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE: + the_thread->cpu_time_budget = _Thread_Ticks_per_timeslice; + break; + case THREAD_CPU_BUDGET_ALGORITHM_CALLOUT: + break; + } + the_thread->Start.isr_level = isr_level; the_thread->current_state = STATES_DORMANT; |