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Code Issues Releases Wiki Activity

isc_thread_setaffinity()

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This commit is contained in:
Witold Krecicki
2018-10-03 23:20:22 +02:00
committed by Witold Kręcicki
parent 151b64aa3e
commit 7b6721b27f
8 changed files with 127 additions and 1 deletions
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39
lib/isc/pthreads/thread.c
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@@ -18,6 +18,17 @@
#include <sched.h>
#endif
#if defined(HAVE_CPUSET_H)
#include <sys/param.h>
#include <sys/cpuset.h>
#endif
#if defined(HAVE_SYS_PROCESET_H)
#include <sys/types.h>
#include <sys/processor.h>
#include <sys/procset.h>
#endif
#include <isc/thread.h>
#include <isc/util.h>
@@ -91,3 +102,31 @@ isc_thread_yield(void) {
pthread_yield_np();
#endif
}
isc_result_t
isc_thread_setaffinity(int cpu) {
#if defined(HAVE_CPUSET_SETAFFINITY)
cpuset_t cpuset;
CPU_ZERO(&cpuset);
CPU_SET(cpu, &cpuset);
if (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1,
&cpuset, sizeof(cpuset)) != 0) {
return (ISC_R_FAILURE);
}
#elif defined(HAVE_PTHREAD_SETAFFINITY_NP)
cpu_set_t set;
CPU_ZERO(&set);
CPU_SET(cpu, &set);
if (pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t),
&set) != 0) {
return (ISC_R_FAILURE);
}
#elif defined(HAVE_PROCESSOR_BIND)
if (processor_bind(P_LWPID, P_MYID, cpu, NULL) != 0) {
return (ISC_R_FAILURE);
}
#else
UNUSED(cpu);
#endif
return (ISC_R_SUCCESS);
}