--- /dev/null
+/**************************************************************************
+ *
+ * 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 WIN32
+#include <sys/time.h>
+#else
+#include <windows.h>
+#include <winddi.h>
+#endif
+
+#include "util/u_time.h"
+
+
+#ifdef WIN32
+static LONGLONG frequency = 0;
+#endif
+
+
+void
+util_time_get(struct util_time *t)
+{
+#ifndef WIN32
+ gettimeofday(&t->tv, NULL);
+#else
+ EngQueryPerformanceCounter(&t->counter);
+#endif
+}
+
+
+void
+util_time_add(const struct util_time *t1,
+ int64_t usecs,
+ struct util_time *t2)
+{
+#ifndef WIN32
+ t2->tv.tv_sec = t1->tv.tv_sec + usecs / 1000000;
+ t2->tv.tv_usec = t1->tv.tv_usec + usecs % 1000000;
+#else
+ if(!frequency)
+ EngQueryPerformanceFrequency(&frequency);
+ t2->counter = t1->counter + (usecs * frequency + 999999LL)/1000000LL;
+#endif
+}
+
+
+int64_t
+util_time_diff(const struct util_time *t1,
+ const struct util_time *t2)
+{
+#ifndef WIN32
+ return (t2->tv.tv_usec - t1->tv.tv_usec) +
+ (t2->tv.tv_sec - t1->tv.tv_sec)*1000000;
+#else
+ return (t2->counter - t1->counter)*1000000LL/frequency;
+#endif
+}
+
+
+/**
+ * Compare two time values.
+ *
+ * Not publicly available because it does not take in account wrap-arounds.
+ * Use util_time_timeout instead.
+ */
+static INLINE int
+util_time_compare(const struct util_time *t1,
+ const struct util_time *t2)
+{
+#ifndef WIN32
+ if (t1->tv.tv_sec < t2->tv.tv_sec)
+ return -1;
+ else if(t1->tv.tv_sec > t2->tv.tv_sec)
+ return 1;
+ else if (t1->tv.tv_usec < t2->tv.tv_usec)
+ return -1;
+ else if(t1->tv.tv_usec > t2->tv.tv_usec)
+ return 1;
+ else
+ return 0;
+#else
+ if (t1->counter < t2->counter)
+ return -1;
+ else if(t1->counter > t2->counter)
+ return 1;
+ else
+ return 0;
+#endif
+}
+
+
+int
+util_time_timeout(const struct util_time *start,
+ const struct util_time *end,
+ const struct util_time *curr)
+{
+ if(util_time_compare(start, end) <= 0)
+ return util_time_compare(start, curr) <= 0 && util_time_compare(curr, end) < 0;
+ else
+ return util_time_compare(start, curr) <= 0 || util_time_compare(curr, end) < 0;
+}
+
+
+#ifdef WIN32
+void util_time_usleep(unsigned usecs)
+{
+ LONGLONG start, curr, end;
+
+ EngQueryPerformanceCounter(&start);
+
+ if(!frequency)
+ EngQueryPerformanceFrequency(&frequency);
+
+ end = start + (usecs * frequency + 999999LL)/1000000LL;
+
+ do {
+ EngQueryPerformanceCounter(&curr);
+ } while(start <= curr && curr < end ||
+ end < start && (curr < end || start <= curr));
+}
+#endif
--- /dev/null
+/**************************************************************************
+ *
+ * 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_ */
projects / mesa.git / commitdiff