CHECK_INCLUDE_FILE("execinfo.h" HAVE_EXECINFO_H)
CHECK_INCLUDE_FILE("signal.h" HAVE_SIGNAL_H)
CHECK_INCLUDE_FILE("sys/time.h" HAVE_SYS_TIME_H)
+CHECK_INCLUDE_FILE("sys/param.h" HAVE_SYS_PARAM_H)
+CHECK_INCLUDE_FILE("sys/sysctl.h" HAVE_SYS_SYSCTL_H)
CHECK_INCLUDE_FILE("time.h" HAVE_TIME_H)
CHECK_INCLUDE_FILE("dlfcn.h" HAVE_DLFCN_H)
CHECK_INCLUDE_FILE("inttypes.h" HAVE_INTTYPES_H)
#endif
/* Calls pthread_atfork() if present, and else does nothing.
- * The only known user of this wrapper is mmalloc_preinit().
+ * The only known user of this wrapper is mmalloc_preinit(); This function may disapear in the near future.
*/
XBT_PUBLIC(int) xbt_os_thread_atfork(void (*prepare)(void),
void (*parent)(void),
void (*child)(void));
+XBT_PUBLIC(int) xbt_os_get_numcores(void);
XBT_PUBLIC(xbt_os_thread_t) xbt_os_thread_create(const char *name,
pvoid_f_pvoid_t start_routine,
# include <unistd.h>
#endif
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+#ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+#endif
+
/****
**** Networking
****/
#endif
+
+/** @brief Returns the amount of cores on the current host */
+int xbt_os_get_numcores(void) {
+#ifdef WIN32
+ SYSTEM_INFO sysinfo;
+ GetSystemInfo(&sysinfo);
+ return sysinfo.dwNumberOfProcessors;
+#elif MACOS
+ int nm[2];
+ size_t len = 4;
+ uint32_t count;
+
+ nm[0] = CTL_HW; nm[1] = HW_AVAILCPU;
+ sysctl(nm, 2, &count, &len, NULL, 0);
+
+ if(count < 1) {
+ nm[1] = HW_NCPU;
+ sysctl(nm, 2, &count, &len, NULL, 0);
+ if(count < 1) { count = 1; }
+ }
+ return count;
+#else
+ return sysconf(_SC_NPROCESSORS_ONLN);
+#endif
+}
+
+
/***** reentrant mutexes *****/
typedef struct xbt_os_rmutex_ {
xbt_os_mutex_t mutex;