examples/performance-thread: fix build on FreeBSD 10.0

While later releases in the FreeBSD 10 series have a CPU_COUNT macro
defined, FreeBSD 10.0 and 10.1 do not have this macro. Therefore we provide
a basic fallback implementation of the macro for platforms where it is not
defined.

Fixes: 433ba6228f9a ("examples/performance-thread: add pthread_shim app")
Cc: stable@dpdk.org
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

diff --git a/examples/performance-thread/pthread_shim/pthread_shim.c b/examples/performance-thread/pthread_shim/pthread_shim.c
index 7167311..113bafa 100644 (file)
--- a/examples/performance-thread/pthread_shim/pthread_shim.c
+++ b/examples/performance-thread/pthread_shim/pthread_shim.c
@@ -48,6 +48,21 @@
 
 #define POSIX_ERRNO(x)  (x)
 
+/* some releases of FreeBSD 10, e.g. 10.0, don't have CPU_COUNT macro */
+#ifndef CPU_COUNT
+#define CPU_COUNT(x) __cpu_count(x)
+
+static inline unsigned int
+__cpu_count(const rte_cpuset_t *cpuset)
+{
+       unsigned int i, count = 0;
+       for (i = 0; i < RTE_MAX_LCORE; i++)
+               if (CPU_ISSET(i, cpuset))
+                       count++;
+       return count;
+}
+#endif
+
 /*
  * this flag determines at run time if we override pthread
  * calls and map then to equivalent lthread calls