Libc-1439.100.3.tar.gz

[apple/libc.git] / sys / OSMemoryNotification.c

diff --git a/sys/OSMemoryNotification.c b/sys/OSMemoryNotification.c
index b0f1ae484bd353e14979f52f903d0047acd84600..9e94e4ee70c82462958c28cc38bd4ccb20b9b50c 100644 (file)
--- a/sys/OSMemoryNotification.c
+++ b/sys/OSMemoryNotification.c
@@ -21,123 +21,11 @@
  * @APPLE_LICENSE_HEADER_END@
  */
 
  * @APPLE_LICENSE_HEADER_END@
  */
 

-#include <errno.h>
-#include <libkern/OSMemoryNotification.h>
-#include <mach/mach.h>
-#include <notify.h>
-#include <stdlib.h>
-#include <sys/time.h>
+// Legacy symbols preserved for binary compatibility.

 
 const char *kOSMemoryNotificationName = "com.apple.system.memorystatus";
 
 
 const char *kOSMemoryNotificationName = "com.apple.system.memorystatus";
 

-struct _OSMemoryNotification {
-       int token;
-       mach_port_t port;
-};
-
-int
-OSMemoryNotificationCreate(OSMemoryNotificationRef *note)
-{
-       OSMemoryNotificationRef ref = malloc(sizeof(struct _OSMemoryNotification));
-
-       if (NULL == ref) {
-               return ENOMEM;
-       }
-       
-       if (NOTIFY_STATUS_OK != notify_register_mach_port(kOSMemoryNotificationName, &ref->port, 0, &ref->token))
-               return ENOMEM;
-
-       *note = ref;
-
-       return 0;
-}
-
-int
-OSMemoryNotificationDestroy(OSMemoryNotificationRef note)
-{
-       if (NOTIFY_STATUS_OK != notify_cancel(note->token))
-               return EINVAL;
-
-       if (KERN_SUCCESS != mach_port_deallocate(mach_task_self(), note->port))
-               return EINVAL;
-
-       free(note);
-
-       return 0;
-}
-               
-int
-OSMemoryNotificationWait(OSMemoryNotificationRef note, OSMemoryNotificationLevel *level)
-{
-
-       return OSMemoryNotificationTimedWait(note, level, NULL);
-}
-
-static mach_msg_timeout_t
-abs_to_timeout(const struct timeval *abstime)
-{
-       struct timeval rel, now;
-
-       gettimeofday(&now, NULL);
-
-       rel.tv_usec = abstime->tv_usec - now.tv_usec;
-       rel.tv_sec = abstime->tv_sec - now.tv_sec;
-       if (rel.tv_usec < 0) {
-               rel.tv_usec += 1000000;
-               rel.tv_sec--;
-       }
-       if (((int)rel.tv_sec < 0) || ((rel.tv_sec == 0) && (rel.tv_usec == 0))) {
-               return 0;
-       }
-       return rel.tv_sec * 1000 + rel.tv_usec / 1000;
-}
-
-int
-OSMemoryNotificationTimedWait(OSMemoryNotificationRef note, OSMemoryNotificationLevel *level, const struct timeval *abstime)
-{
-       mach_msg_empty_rcv_t msg = {{0}};
-       mach_msg_return_t ret;
-       uint64_t val;
-
-       if (abstime) {
-               mach_msg_timeout_t timeout = abs_to_timeout(abstime);
-
-               if (0 == timeout)
-                       return ETIMEDOUT;
-
-               ret = mach_msg(&msg.header, MACH_RCV_MSG | MACH_RCV_TIMEOUT, 0, sizeof msg, note->port, timeout, MACH_PORT_NULL);
-
-               if (MACH_RCV_TIMED_OUT == ret) {
-                       return ETIMEDOUT;
-               } 
-       } else {
-               ret = mach_msg(&msg.header, MACH_RCV_MSG, 0, sizeof msg, note->port, MACH_MSG_TIMEOUT_NONE, MACH_PORT_NULL);
-       }
-
-       if (MACH_MSG_SUCCESS != ret)
-               return EINVAL;
-
-       if (NOTIFY_STATUS_OK != notify_get_state(note->token, &val))
-               return EINVAL;
-
-       *level = (OSMemoryNotificationLevel)val;
-
-       return 0;
-}
-
-OSMemoryNotificationLevel OSMemoryNotificationCurrentLevel(void)
+int OSMemoryNotificationCurrentLevel(void)

 {
 {

-       uint64_t val;
-       int token;
-
-       if (NOTIFY_STATUS_OK != notify_register_check(kOSMemoryNotificationName, &token))
-               return OSMemoryNotificationLevelAny;
-
-       if (NOTIFY_STATUS_OK != notify_get_state(token, &val))
-               return OSMemoryNotificationLevelAny;
-
-       if (NOTIFY_STATUS_OK != notify_cancel(token))
-               return OSMemoryNotificationLevelAny;
-
-       return (OSMemoryNotificationLevel)val;
+       return 0; // OSMemoryNotificationLevelNormal

 }
 }