From: Baptiste Daroussin <bapt@FreeBSD.org>
Date: Sat, 15 Apr 2017 14:25:08 +0000 (+0200)
Subject: Enable multithreading on BSD
X-Git-Tag: v1.2.0^2~44^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F659%2Fhead;p=thirdparty%2Fzstd.git

Enable multithreading on BSD
---

diff --git a/programs/util.h b/programs/util.h
index b989e8232..5f437b2b2 100644
--- a/programs/util.h
+++ b/programs/util.h
@@ -657,6 +657,24 @@ failed:
     }
 }
 
+#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+
+/* Use apple-provided syscall
+ * see: man 3 sysctl */
+UTIL_STATIC int UTIL_countPhysicalCores(void)
+{
+    static int numPhysicalCores = 0;
+
+    if (numPhysicalCores != 0) return numPhysicalCores;
+
+    numPhysicalCores = (int)sysconf(_SC_NPROCESSORS_ONLN);
+    if (numPhysicalCores == -1) {
+        /* value not queryable, fall back on 1 */
+        return numPhysicalCores = 1;
+    }
+    return numPhysicalCores;
+}
+
 #else
 
 UTIL_STATIC int UTIL_countPhysicalCores(void)