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fixed sched. priority code: wouldn't work for all values.

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This was SVN commit r1468.
This commit is contained in:
janwas 2004-12-07 03:01:12 +00:00
parent 77196dbe06
commit 0f18178fda
3 changed files with 18 additions and 7 deletions
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4
source/lib/sysdep/ia32.cpp
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@ -344,8 +344,8 @@ static void measure_cpu_freq()
int old_policy; static sched_param old_param; // (static => 0-init)
pthread_getschedparam(pthread_self(), &old_policy, &old_param);
static sched_param max_param;
max_param.sched_priority = sched_get_priority_max(SCHED_RR);
pthread_setschedparam(pthread_self(), SCHED_RR, &max_param);
max_param.sched_priority = sched_get_priority_max(SCHED_FIFO);
pthread_setschedparam(pthread_self(), SCHED_FIFO, &max_param);
if(ia32_cap(TSC))
// make sure the TSC is available, because we're going to

16
source/lib/sysdep/win/wposix.cpp
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@ -342,11 +342,21 @@ int pthread_getschedparam(pthread_t thread, int* policy, struct sched_param* par
int pthread_setschedparam(pthread_t thread, int policy, const struct sched_param* param)
{
if(policy == SCHED_FIFO)
SetPriorityClass(GetCurrentProcess(), HIGH_PRIORITY_CLASS);
const int pri = param->sched_priority;
// additional boost for policy == SCHED_FIFO
DWORD pri_class = NORMAL_PRIORITY_CLASS;
if(policy == SCHED_FIFO)
{
pri_class = HIGH_PRIORITY_CLASS;
if(pri == 2)
pri_class = REALTIME_PRIORITY_CLASS;
}
SetPriorityClass(GetCurrentProcess(), pri_class);
// choose fixed Windows values from pri
const HANDLE hThread = cast_to_HANDLE((intptr_t)thread);
SetThreadPriority(hThread, param->sched_priority);
SetThreadPriority(hThread, pri);
return 0;
}

5
source/lib/sysdep/win/wposix.h
View File

@ -358,8 +358,9 @@ enum
SCHED_OTHER
};
#define sched_get_priority_max(policy) 15 // TIME_CRITICAL
#define sched_get_priority_min(policy) -15 // IDLE
#define sched_get_priority_max(policy) +2
#define sched_get_priority_min(policy) -2
// changing will break pthread_setschedparam
//