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annotate src/os/unix/ngx_setaffinity.c @ 5036:6e374742043e stable-1.2

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Merge of r4944: removed GLOB_NOSORT glob option. This will result in alphabetical sorting of included files if the "include" directive with wildcards is used. Note that the behaviour is now different from that on Windows, where alphabetical sorting is not guaranteed for FindFirsFile()/FindNextFile() (used to be alphabetical on NTFS, but not on FAT). Approved by Igor Sysoev, prodded by many.
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 09 Feb 2013 21:27:37 +0000
parents f31162fefe01
children 7296b38f6416
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4549
f31162fefe01 worker_cpu_affinity: cleaned up Linux implementation, added FreeBSD support.
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1
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
f31162fefe01 worker_cpu_affinity: cleaned up Linux implementation, added FreeBSD support.
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11 #if (NGX_HAVE_CPUSET_SETAFFINITY)
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12
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13 #include <sys/cpuset.h>
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15 void
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16 ngx_setaffinity(uint64_t cpu_affinity, ngx_log_t *log)
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17 {
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18 cpuset_t mask;
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19 ngx_uint_t i;
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20
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21 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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22 "cpuset_setaffinity(0x%08Xl)", cpu_affinity);
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23
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24 CPU_ZERO(&mask);
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25 i = 0;
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26 do {
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27 if (cpu_affinity & 1) {
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28 CPU_SET(i, &mask);
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29 }
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30 i++;
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31 cpu_affinity >>= 1;
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32 } while (cpu_affinity);
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33
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34 if (cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
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35 sizeof(cpuset_t), &mask) == -1)
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36 {
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37 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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38 "cpuset_setaffinity() failed");
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39 }
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40 }
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41
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42 #elif (NGX_HAVE_SCHED_SETAFFINITY)
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43
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44 void
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45 ngx_setaffinity(uint64_t cpu_affinity, ngx_log_t *log)
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46 {
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47 cpu_set_t mask;
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48 ngx_uint_t i;
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50 ngx_log_error(NGX_LOG_NOTICE, log, 0,
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51 "sched_setaffinity(0x%08Xl)", cpu_affinity);
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52
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53 CPU_ZERO(&mask);
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54 i = 0;
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55 do {
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56 if (cpu_affinity & 1) {
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57 CPU_SET(i, &mask);
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58 }
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59 i++;
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60 cpu_affinity >>= 1;
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61 } while (cpu_affinity);
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62
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63 if (sched_setaffinity(0, sizeof(cpu_set_t), &mask) == -1) {
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64 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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65 "sched_setaffinity() failed");
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66 }
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67 }
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68
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69 #endif