try to bind worker threads to cores when possible

[simgrid.git] / include / xbt / xbt_os_thread.h

diff --git a/include/xbt/xbt_os_thread.h b/include/xbt/xbt_os_thread.h
index b7d7d95..3d95429 100644 (file)
--- a/include/xbt/xbt_os_thread.h
+++ b/include/xbt/xbt_os_thread.h
@@ -27,13 +27,10 @@ typedef struct xbt_os_thread_ *xbt_os_thread_t;
 
 #ifdef _XBT_WIN32 /* defined if this is a windows system, 32bits or 64bits) */
 #include <windows.h>
-typedef DWORD xbt_os_thread_key_t;
-#else /* assume that every non-windows system is POSIX-compatible */
+#endif
 
 #include <pthread.h>
 typedef pthread_key_t xbt_os_thread_key_t;
-#endif
-
 /** Calls pthread_atfork() if present, and raise an exception otherwise.
  *
  * The only known user of this wrapper is mmalloc_preinit(), but it is absolutely mandatory there:
@@ -44,13 +41,13 @@ XBT_PUBLIC(int) xbt_os_thread_atfork(void (*prepare)(void), void (*parent)(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, void *param,
-                                                 void *data);
+XBT_PUBLIC(xbt_os_thread_t) xbt_os_thread_create(const char *name, pvoid_f_pvoid_t start_routine, void *param, void *data);
 
-//#define CORE_BINDING  //Uncomment this to enable binding of threads to physical cores. Only Linux.
-#ifdef CORE_BINDING
-XBT_PUBLIC(int) xbt_os_thread_bind(xbt_os_thread_t thread, int cpu);
-#endif
+/** Bind the thread to the given core, if possible.
+ *
+ * If pthread_setaffinity_np is not usable on that (non-gnu) platform, this function does nothing.
+ */
+XBT_PUBLIC(int) xbt_os_thread_bind(xbt_os_thread_t thread, int core);
 
 XBT_PUBLIC(void) xbt_os_thread_exit(int *retcode);
 XBT_PUBLIC(void) xbt_os_thread_detach(xbt_os_thread_t thread);
@@ -66,7 +63,6 @@ XBT_PUBLIC(void*) xbt_os_thread_get_specific(xbt_os_thread_key_t key);
 XBT_PUBLIC(void) xbt_os_thread_join(xbt_os_thread_t thread, void **thread_return);
 XBT_PUBLIC(void) xbt_os_thread_yield(void);
 XBT_PUBLIC(void) xbt_os_thread_cancel(xbt_os_thread_t thread);
-XBT_PUBLIC(void *) xbt_os_thread_getparam(void);
 XBT_PUBLIC(void) xbt_os_thread_setstacksize(int stack_size);
 XBT_PUBLIC(void) xbt_os_thread_setguardsize(int guard_size);