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comparison src/os/unix/ngx_posix_init.c @ 7173:057adb2a9d23

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Use sysconf to determine cacheline size at runtime. Determine cacheline size at runtime if supported using sysconf(_SC_LEVEL1_DCACHE_LINESIZE). In case not supported, fallback to compile time defaults.
author Debayan Ghosh <debayang.qdt@qualcommdatacenter.com>
date Mon, 11 Dec 2017 16:28:11 +0000
parents 56fc55e32f23
children
comparison
equal deleted inserted replaced
7172:e4c21e417277 7173:057adb2a9d23
34 ngx_int_t 34 ngx_int_t
35 ngx_os_init(ngx_log_t *log) 35 ngx_os_init(ngx_log_t *log)
36 { 36 {
37 ngx_time_t *tp; 37 ngx_time_t *tp;
38 ngx_uint_t n; 38 ngx_uint_t n;
39 #if (NGX_HAVE_LEVEL1_DCACHE_LINESIZE)
40 long size;
41 #endif
39 42
40 #if (NGX_HAVE_OS_SPECIFIC_INIT) 43 #if (NGX_HAVE_OS_SPECIFIC_INIT)
41 if (ngx_os_specific_init(log) != NGX_OK) { 44 if (ngx_os_specific_init(log) != NGX_OK) {
42 return NGX_ERROR; 45 return NGX_ERROR;
43 } 46 }
59 #endif 62 #endif
60 63
61 if (ngx_ncpu < 1) { 64 if (ngx_ncpu < 1) {
62 ngx_ncpu = 1; 65 ngx_ncpu = 1;
63 } 66 }
67
68 #if (NGX_HAVE_LEVEL1_DCACHE_LINESIZE)
69 size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE);
70 if (size > 0) {
71 ngx_cacheline_size = size;
72 }
73 #endif
64 74
65 ngx_cpuinfo(); 75 ngx_cpuinfo();
66 76
67 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) { 77 if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
68 ngx_log_error(NGX_LOG_ALERT, log, errno, 78 ngx_log_error(NGX_LOG_ALERT, log, errno,