From d935b0cdf3db440269b9d952b2b281b18f8c7b08 Mon Sep 17 00:00:00 2001
From: Lasse Collin <lasse.collin@tukaani.org>
Date: Tue, 10 Feb 2015 15:28:30 +0200
Subject: tuklib_cpucores: Use cpuset_getaffinity() on FreeBSD if available.

In FreeBSD, cpuset_getaffinity() is the preferred way to get
the number of available cores.

Thanks to Rui Paulo for the patch. I edited it slightly, but
hopefully I didn't break anything.
---
 src/common/tuklib_cpucores.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src')

diff --git a/src/common/tuklib_cpucores.c b/src/common/tuklib_cpucores.c
index 7574bc9c..e235fd1c 100644
--- a/src/common/tuklib_cpucores.c
+++ b/src/common/tuklib_cpucores.c
@@ -18,6 +18,11 @@
 #	endif
 #	include <windows.h>
 
+// FreeBSD
+#elif defined(TUKLIB_CPUCORES_CPUSET)
+#	include <sys/param.h>
+#	include <sys/cpuset.h>
+
 #elif defined(TUKLIB_CPUCORES_SYSCTL)
 #	ifdef HAVE_SYS_PARAM_H
 #		include <sys/param.h>
@@ -44,6 +49,19 @@ tuklib_cpucores(void)
 	GetSystemInfo(&sysinfo);
 	ret = sysinfo.dwNumberOfProcessors;
 
+#elif defined(TUKLIB_CPUCORES_CPUSET)
+	cpuset_t set;
+	if (cpuset_getaffinity(CPU_LEVEL_WHICH, CPU_WHICH_PID, -1,
+			sizeof(set), &set) == 0) {
+#	ifdef CPU_COUNT
+		ret = CPU_COUNT(&set);
+#	else
+		for (unsigned i = 0; i < CPU_SETSIZE; ++i)
+			if (CPU_ISSET(i, &set))
+				++ret;
+#	endif
+	}
+
 #elif defined(TUKLIB_CPUCORES_SYSCTL)
 	int name[2] = { CTL_HW, HW_NCPU };
 	int cpus;
-- 
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