From: "Brian F. G. Bidulock" <bidulock@openss7.org>
Date: Tue, 8 Oct 2002 16:20:17 -0600
This version (courtesy of Dave Grothe at GCOM) uses up/down
semaphore instead of read/write spinlocks.
Oh really?
+static int (*do_putpmsg) (int, void *, void *, int, int) = NULL;
+static int (*do_getpmsg) (int, void *, void *, int, int) = NULL;
+
+static rwlock_t streams_call_lock = RW_LOCK_UNLOCKED;
^^^^^^^^
+
+long asmlinkage sys_putpmsg(int fd, void *ctlptr, void *datptr, int band, int flags)
+{
+ int ret = -ENOSYS;
+ read_lock(&streams_call_lock);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ if (do_putpmsg)
+ ret = (*do_putpmsg) (fd, ctlptr, datptr, band, flags);
+ read_unlock(&streams_call_lock);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ return ret;
+}
-
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This archive was generated by hypermail 2b29 : Tue Oct 15 2002 - 22:00:29 EST