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6673124: Runtime.availableProcessors / os::active_processor_count wrong if unused processor sets exist

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Reviewed-by: acorn, dholmes
This commit is contained in:
Xiaobin Lu 2008-10-06 11:39:34 -07:00
parent b089627fe8
commit fe28b4f768
1 changed files with 7 additions and 9 deletions
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16
hotspot/src/os/solaris/vm/os_solaris.cpp
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@ -462,16 +462,14 @@ int os::active_processor_count() {
int online_cpus = sysconf(_SC_NPROCESSORS_ONLN);
pid_t pid = getpid();
psetid_t pset = PS_NONE;
// Are we running in a processor set?
// Are we running in a processor set or is there any processor set around?
if (pset_bind(PS_QUERY, P_PID, pid, &pset) == 0) {
if (pset != PS_NONE) {
uint_t pset_cpus;
// Query number of cpus in processor set
if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) {
assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check");
_processors_online = pset_cpus;
return pset_cpus;
}
uint_t pset_cpus;
// Query the number of cpus available to us.
if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) {
assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check");
_processors_online = pset_cpus;
return pset_cpus;
}
}
// Otherwise return number of online cpus