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| author | Garrett D'Amore <garrett@damore.org> | 2018-06-12 00:40:37 -0700 |
|---|---|---|
| committer | Garrett D'Amore <garrett@damore.org> | 2018-06-12 00:40:37 -0700 |
| commit | e60308808f58a3517170edf61245031cb899e59e (patch) | |
| tree | 79c78ac8fbde2efef1c179e5c2cc6c23fff1f64d /src/platform/posix | |
| parent | 061beeabd9859f92917ae3f0c5657dd8eca44d68 (diff) | |
| download | nng-e60308808f58a3517170edf61245031cb899e59e.tar.gz nng-e60308808f58a3517170edf61245031cb899e59e.tar.bz2 nng-e60308808f58a3517170edf61245031cb899e59e.zip | |
fixes #32 autoscale based on CPUs available
This should work on both Windows and the most common POSIX
variants. We will create at least two threads for running
completions, but there are numerous other threads in the code.
Diffstat (limited to 'src/platform/posix')
| -rw-r--r-- | src/platform/posix/posix_thread.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/platform/posix/posix_thread.c b/src/platform/posix/posix_thread.c index f016ca3f..df2ee9d2 100644 --- a/src/platform/posix/posix_thread.c +++ b/src/platform/posix/posix_thread.c @@ -336,4 +336,16 @@ nni_plat_fini(void) pthread_mutex_unlock(&nni_plat_init_lock); } +int +nni_plat_ncpu(void) +{ + // POSIX specifies sysconf exists, but not the value + // _SC_NPROCESSORS_ONLN. Nonetheless, everybody implements it. + // If you don't we'll assume you only have a single logical CPU. +#ifdef _SC_NPROCESSORS_ONLN + return (sysconf(_SC_NPROCESSORS_ONLN)); +#else + return (1); +#endif +} #endif // NNG_PLATFORM_POSIX |