blob: 8f6cf35948a13d0b9740f995e03622cace1a25e0 [file] [log] [blame]
/*
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#if (NGX_HAVE_CPUSET_SETAFFINITY)
#include <sys/cpuset.h>
void
ngx_setaffinity(uint64_t cpu_affinity, ngx_log_t *log)
{
cpuset_t mask;
ngx_uint_t i;
ngx_log_error(NGX_LOG_NOTICE, log, 0,
"cpuset_setaffinity(0x%08Xl)", cpu_affinity);
CPU_ZERO(&mask);
i = 0;
do {
if (cpu_affinity & 1) {
CPU_SET(i, &mask);
}
i++;
cpu_affinity >>= 1;
} while (cpu_affinity);
if (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
sizeof(cpuset_t), &mask) == -1)
{
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
"cpuset_setaffinity() failed");
}
}
#elif (NGX_HAVE_SCHED_SETAFFINITY)
void
ngx_setaffinity(uint64_t cpu_affinity, ngx_log_t *log)
{
cpu_set_t mask;
ngx_uint_t i;
ngx_log_error(NGX_LOG_NOTICE, log, 0,
"sched_setaffinity(0x%08Xl)", cpu_affinity);
CPU_ZERO(&mask);
i = 0;
do {
if (cpu_affinity & 1) {
CPU_SET(i, &mask);
}
i++;
cpu_affinity >>= 1;
} while (cpu_affinity);
if (sched_setaffinity(0, sizeof(cpu_set_t), &mask) == -1) {
ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
"sched_setaffinity() failed");
}
}
#endif