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| author | Nick Mathewson <nickm@torproject.org> | 2013-03-19 14:26:45 -0400 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2013-03-19 14:26:45 -0400 |
| commit | 8d29866bec821e188a411f78b8112d2097ed106c (patch) | |
| tree | 905cd7e57ecae14b3873054247ad0e8db6c72128 /src/common/compat.c | |
| parent | de7e99f8bbc17bfaea260c6d8e2217678b5152af (diff) | |
| parent | 22804c0391f0549356959e1b474c43bfcba1b8cb (diff) | |
| download | tor-8d29866bec821e188a411f78b8112d2097ed106c.tar tor-8d29866bec821e188a411f78b8112d2097ed106c.tar.gz | |
Merge remote-tracking branch 'public/bug8002' into maint-0.2.4
Diffstat (limited to 'src/common/compat.c')
| -rw-r--r-- | src/common/compat.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/src/common/compat.c b/src/common/compat.c index 4fa9fee42..c97a4545c 100644 --- a/src/common/compat.c +++ b/src/common/compat.c @@ -2313,8 +2313,33 @@ compute_num_cpus_impl(void) return (int)info.dwNumberOfProcessors; else return -1; -#elif defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF) - long cpus = sysconf(_SC_NPROCESSORS_CONF); +#elif defined(HAVE_SYSCONF) +#ifdef _SC_NPROCESSORS_CONF + long cpus_conf = sysconf(_SC_NPROCESSORS_CONF); +#else + long cpus_conf = -1; +#endif +#ifdef _SC_NPROCESSORS_ONLN + long cpus_onln = sysconf(_SC_NPROCESSORS_ONLN); +#else + long cpus_onln = -1; +#endif + long cpus = -1; + + if (cpus_conf > 0 && cpus_onln < 0) { + cpus = cpus_conf; + } else if (cpus_onln > 0 && cpus_conf < 0) { + cpus = cpus_onln; + } else if (cpus_onln > 0 && cpus_conf > 0) { + if (cpus_onln < cpus_conf) { + log_notice(LD_GENERAL, "I think we have %ld CPUS, but only %ld of them " + "are available. Telling Tor to only use %ld. You can over" + "ride this with the NumCPUs option", + cpus_conf, cpus_onln, cpus_onln); + } + cpus = cpus_onln; + } + if (cpus >= 1 && cpus < INT_MAX) return (int)cpus; else |