Using linux soft realtime priority for Sys.REALTIME_PRIORITY
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@ -39,6 +39,7 @@
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* @version $Revision$
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* @version $Revision$
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*/
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*/
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#include <sched.h>
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#include <sys/time.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/resource.h>
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#include "org_lwjgl_Sys.h"
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#include "org_lwjgl_Sys.h"
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@ -130,12 +131,40 @@ JNIEXPORT void JNICALL Java_org_lwjgl_Sys_setProcessPriority
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(JNIEnv * env, jclass clazz, jint priority)
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(JNIEnv * env, jclass clazz, jint priority)
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{
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{
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int linux_priority;
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int linux_priority;
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int max_pri, min_pri;
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struct sched_param sched_pri;
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if (sched_getscheduler(0) != SCHED_OTHER) {
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// Reset scheduler to normal
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sched_pri.sched_priority = 0;
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if (sched_setscheduler(0, SCHED_OTHER, &sched_pri) != 0) {
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#ifdef _DEBUG
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printf("Could not set realtime priority\n");
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#endif
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return;
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}
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}
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switch (priority) {
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switch (priority) {
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case org_lwjgl_Sys_REALTIME_PRIORITY:
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case org_lwjgl_Sys_REALTIME_PRIORITY:
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linux_priority = -20;
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min_pri = sched_get_priority_min(SCHED_FIFO);
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break;
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max_pri = sched_get_priority_max(SCHED_FIFO);
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if (min_pri == -1 || max_pri == -1) {
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#ifdef _DEBUG
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printf("Failed to set realtime priority\n");
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#endif
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return;
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}
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sched_pri.sched_priority = (max_pri + min_pri)/2;
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if (sched_setscheduler(0, SCHED_FIFO, &sched_pri) != 0) {
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#ifdef _DEBUG
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printf("Could not set realtime priority\n");
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#endif
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return;
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}
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return;
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case org_lwjgl_Sys_HIGH_PRIORITY:
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case org_lwjgl_Sys_HIGH_PRIORITY:
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linux_priority = -10;
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linux_priority = -20;
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break;
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break;
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case org_lwjgl_Sys_NORMAL_PRIORITY:
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case org_lwjgl_Sys_NORMAL_PRIORITY:
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linux_priority = 0;
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linux_priority = 0;
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