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src/os/unix/ngx_setaffinity.c - nginx-1.7.10
Functions defined
Source code
- #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
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