gallium: OS independent time-manipulation functions.

1 files changed, 99 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/util/u_time.h b/src/gallium/auxiliary/util/u_time.h
new file mode 100644
index 0000000000..32035cceb5
--- /dev/null
+++ b/src/gallium/auxiliary/util/u_time.h
@@ -0,0 +1,99 @@
+/**************************************************************************
+ *
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * OS independent time-manipulation functions.
+ * 
+ * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
+ */
+
+#ifndef U_TIME_H_
+#define U_TIME_H_
+
+
+#ifndef WIN32
+#include <time.h> /* timeval */
+#include <unistd.h> /* usleep */
+#endif
+
+#include "pipe/p_compiler.h"
+
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * Time abstraction.
+ * 
+ * Do not access this structure directly. Use the provided function instead.
+ */
+struct util_time 
+{
+#ifndef WIN32
+   struct timeval tv;
+#else
+   long long counter;
+#endif
+};
+   
+
+void 
+util_time_get(struct util_time *t);
+
+void 
+util_time_add(const struct util_time *t1,
+              int64_t usecs,
+              struct util_time *t2);
+
+int64_t
+util_time_diff(const struct util_time *t1, 
+               const struct util_time *t2);
+
+/**
+ * Returns zero when the timeout expires, non zero otherwise.
+ */
+int 
+util_time_timeout(const struct util_time *start, 
+                  const struct util_time *end,
+                  const struct util_time *curr);
+
+#ifndef WIN32
+#define util_time_sleep usleep
+#else
+int 
+util_time_sleep(unsigned usecs);
+#endif
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* U_TIME_H_ */