1 files changed, 0 insertions, 95 deletions
diff --git a/src/backend/storage/lmgr/spin.c b/src/backend/storage/lmgr/spin.c
deleted file mode 100644
index ae199597a65..00000000000
--- a/src/backend/storage/lmgr/spin.c
+++ /dev/null
@@ -1,95 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * spin.c
- *	   Hardware-independent implementation of spinlocks.
- *
- *
- * For machines that have test-and-set (TAS) instructions, s_lock.h/.c
- * define the spinlock implementation.	This file contains only a stub
- * implementation for spinlocks using PGSemaphores.  Unless semaphores
- * are implemented in a way that doesn't involve a kernel call, this
- * is too slow to be very useful :-(
- *
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/storage/lmgr/spin.c,v 1.9 2002/06/20 20:29:35 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres.h"
-
-#include "storage/lwlock.h"
-#include "storage/pg_sema.h"
-#include "storage/spin.h"
-
-
-#ifdef HAS_TEST_AND_SET
-
-/*
- * Report number of semaphores needed to support spinlocks.
- */
-int
-SpinlockSemas(void)
-{
-	return 0;
-}
-
-#else							/* !HAS_TEST_AND_SET */
-
-/*
- * No TAS, so spinlocks are implemented as PGSemaphores.
- */
-
-
-/*
- * Report number of semaphores needed to support spinlocks.
- */
-int
-SpinlockSemas(void)
-{
-	/*
-	 * It would be cleaner to distribute this logic into the affected modules,
-	 * similar to the way shmem space estimation is handled.
-	 *
-	 * For now, though, we just need a few spinlocks (10 should be
-	 * plenty) plus one for each LWLock.
-	 */
-	return NumLWLocks() + 10;
-}
-
-/*
- * s_lock.h hardware-spinlock emulation
- */
-
-void
-s_init_lock_sema(volatile slock_t *lock)
-{
-	PGSemaphoreCreate((PGSemaphore) lock);
-}
-
-void
-s_unlock_sema(volatile slock_t *lock)
-{
-	PGSemaphoreUnlock((PGSemaphore) lock);
-}
-
-bool
-s_lock_free_sema(volatile slock_t *lock)
-{
-	/* We don't currently use S_LOCK_FREE anyway */
-	elog(ERROR, "spin.c does not support S_LOCK_FREE()");
-	return false;
-}
-
-int
-tas_sema(volatile slock_t *lock)
-{
-	/* Note that TAS macros return 0 if *success* */
-	return !PGSemaphoreTryLock((PGSemaphore) lock);
-}
-
-#endif   /* !HAS_TEST_AND_SET */