add function get_sys_cpu_count()

HISTORY

@@ -1,10 +1,11 @@
 
-Version 1.23  2015-11-03
+Version 1.23  2015-11-04
   * sched_thread.c: task can execute in a new thread
   * sched_thread.c: support delay tasks
   * add function get_current_time_us and get_current_time_ms
   * mblock add stat function
-  * add function get_sys_total_mem_size, ONLY support Linux and FreeBSD
+  * add function get_sys_total_mem_size and get_sys_cpu_count,
+    ONLY support Linux and FreeBSD
   * delay task can execute in a new thread
   * fast_mblock reclaimed object pool
 

src/shared_func.c

@@ -2312,3 +2312,12 @@ int get_sys_total_mem_size(int64_t *mem_size)
 #endif
 }
 
+int get_sys_cpu_count()
+{
+#if defined(OS_LINUX) || defined(OS_FREEBSD)
+    return sysconf(_SC_NPROCESSORS_ONLN);
+#else
+#error port me!
+#endif
+}
+

src/shared_func.h

@@ -535,6 +535,13 @@ int64_t get_current_time_us();
 */
 int get_sys_total_mem_size(int64_t *mem_size);
 
+
+/** get system CPU count
+ *  parameters:
+ *  return: error no , 0 success, != 0 fail
+*/
+int get_sys_cpu_count();
+
 #ifdef __cplusplus
 }
 #endif