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8232107: support ThreadPriorityPolicy flag on AIX

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Reviewed-by: clanger, dholmes
This commit is contained in:
Matthias Baesken 2019-10-10 14:20:43 +02:00
parent 485f2e7f52
commit 2882b4c549
1 changed files with 21 additions and 2 deletions
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23
src/hotspot/os/aix/os_aix.cpp
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@ -2643,8 +2643,24 @@ int os::java_to_os_priority[CriticalPriority + 1] = {
60 // 11 CriticalPriority
};
static int prio_init() {
if (ThreadPriorityPolicy == 1) {
if (geteuid() != 0) {
if (!FLAG_IS_DEFAULT(ThreadPriorityPolicy)) {
warning("-XX:ThreadPriorityPolicy=1 may require system level permission, " \
"e.g., being the root user. If the necessary permission is not " \
"possessed, changes to priority will be silently ignored.");
}
}
}
if (UseCriticalJavaThreadPriority) {
os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority];
}
return 0;
}
OSReturn os::set_native_priority(Thread* thread, int newpri) {
if (!UseThreadPriorities) return OS_OK;
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) return OS_OK;
pthread_t thr = thread->osthread()->pthread_id();
int policy = SCHED_OTHER;
struct sched_param param;
@ -2659,7 +2675,7 @@ OSReturn os::set_native_priority(Thread* thread, int newpri) {
}
OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) {
if (!UseThreadPriorities) {
if (!UseThreadPriorities || ThreadPriorityPolicy == 0) {
*priority_ptr = java_to_os_priority[NormPriority];
return OS_OK;
}
@ -3569,6 +3585,9 @@ jint os::init_2(void) {
}
}
// initialize thread priority policy
prio_init();
return JNI_OK;
}