From bcc73960657538f601dc90076e30df3cc6032569 Mon Sep 17 00:00:00 2001
From: Janne Grunau <janne-libav@jannau.net>
Date: Sat, 24 Dec 2011 00:27:12 +0100
Subject: threads: add sysconf based number of CPUs detection

Can act as fallback and should work on a couple of Unix systems.
---
 libavcodec/pthread.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'libavcodec/pthread.c')

diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index 73d96fca1a..400abf4f6c 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -45,6 +45,9 @@
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #endif
+#if HAVE_SYSCONF
+#include <unistd.h>
+#endif
 
 #include "avcodec.h"
 #include "internal.h"
@@ -177,6 +180,10 @@ static int get_logical_cpus(AVCodecContext *avctx)
     ret = sysctl(mib, 2, &nb_cpus, &len, NULL, 0);
     if (ret == -1)
         nb_cpus = 0;
+#elif HAVE_SYSCONF && defined(_SC_NPROC_ONLN)
+    nb_cpus = sysconf(_SC_NPROC_ONLN);
+#elif HAVE_SYSCONF && defined(_SC_NPROCESSORS_ONLN)
+    nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 #endif
     av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
     return FFMIN(nb_cpus, MAX_AUTO_THREADS);
-- 
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