Import changeset

mit-pthreads/include/pthread/util.h

@@ -0,0 +1,89 @@
+/* ==== util.h ============================================================
+ * Copyright (c) 1991, 1992, 1993 by Chris Provenzano, proven@mit.edu
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *  This product includes software developed by Chris Provenzano.
+ * 4. The name of Chris Provenzano may not be used to endorse or promote 
+ *	  products derived from this software without specific prior written
+ *	  permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY 
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ *
+ * Description : Header file for generic utility functions.
+ *
+ * 91/08/31 proven - Added exchange.
+ * Exchange any two objects of any size in any table.
+ *
+ * 91/10/06 proven - Cleaned out all the old junk. 
+ *
+ * 91/03/06 proven - Added getint. 
+ */
+
+#ifndef _PTHREAD_UTIL_H
+#define _PTHREAD_UTIL_H
+
+#ifndef	NULL
+#define NULL	0
+#endif
+
+/* Stuff only pthread internals really uses */
+#if defined(PTHREAD_KERNEL)
+
+#undef FALSE
+#undef TRUE
+
+typedef enum Boolean {
+	FALSE,
+	TRUE
+} Boolean;
+
+#define OK					0
+#define NUL					'\0'
+#define NOTOK				-1
+
+#if ! defined(min)
+#define min(a,b) (((a)<(b))?(a):(b))
+#define max(a,b) (((a)>(b))?(a):(b))
+#endif
+
+/* Alingn the size to the next multiple of 4 bytes */
+#define ALIGN4(size)	((size + 3) & ~3)
+#define ALIGN8(size)	((size + 7) & ~7)
+
+#ifdef DEBUG
+#define	DEBUG0(s)		printf(s)
+#define	DEBUG1(s,a)		printf(s,a)
+#define	DEBUG2(s,a,b)	printf(s,a,b)
+#define	DEBUG3(s,a,b,c)	printf(s,a,b,c)
+#else
+#define	DEBUG0(s)	
+#define	DEBUG1(s)	
+#define	DEBUG2(s)	
+#define	DEBUG3(s)	
+#endif
+
+#endif
+
+#endif