moving files to /server to make merge possible

server/include/spinlock.h

@@ -0,0 +1,59 @@
+#ifndef _SPINLOCK_H
+#define _SPINLOCK_H
+/*
+ * This file is distributed as part of the SkySQL Gateway.  It is free
+ * software: you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation,
+ * version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright SkySQL Ab 2013
+ */
+
+/**
+ * @file spinlock.h
+ *
+ * Spinlock implementation for ther gateway.
+ *
+ * Spinlocks are cheap locks that can be used to protect short code blocks, they are
+ * generally wasteful as any blocked threads will spin, consuming CPU cycles, waiting
+ * for the lock to be released. However they are useful in that they do not involve
+ * system calls and are light weight when the expected wait time for a lock is low.
+ */
+#include <thread.h>
+
+typedef struct spinlock {
+	int		lock;
+#if DEBUG
+	int		spins;
+	int		acquired;
+	THREAD		owner;
+#endif
+} SPINLOCK;
+
+#ifndef TRUE
+#define TRUE	(1 == 1)
+#endif
+#ifndef FALSE
+#define FALSE	(1 == 0)
+#endif
+
+#if DEBUG
+#define SPINLOCK_INIT { 0, 0, 0, NULL }
+#else
+#define SPINLOCK_INIT { 0 }
+#endif
+
+extern void	spinlock_init(SPINLOCK *lock);
+extern void	spinlock_acquire(SPINLOCK *lock);
+extern int	spinlock_acquire_nowait(SPINLOCK *lock);
+extern void	spinlock_release(SPINLOCK *lock);
+#endif