Mercurial > hg > nginx-quic

annotate src/os/unix/ngx_setaffinity.c @ 4794:4163fb9dcfcb

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Explicitly ignore returned value from unlink() in ngx_open_tempfile(). The only thing we could potentially do here in case of error returned is to complain to error log, but we don't have log structure available here due to interface limitations. Prodded by Coverity.
author Andrey Belov <defan@nginx.com>
date Mon, 06 Aug 2012 16:06:59 +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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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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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