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Merge remote-tracking branch 'public/bug8002' into maint-0.2.4

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This commit is contained in:
Nick Mathewson 2013-03-19 14:26:45 -04:00
commit 8d29866bec
2 changed files with 32 additions and 2 deletions
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5
changes/bug8002 Normal file
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@ -0,0 +1,5 @@
o Minor bugfixes:
- When autodetecting the number of CPUs, use the number of available
CPUs in preferernce to the number of configured CPUs. Inform the
user if this reduces the number of avialable CPUs. Fix for bug 8002.
Bugfix on 0.2.3.1-alpha.

29
src/common/compat.c
View File

@ -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