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authorTavian Barnes <tavianator@tavianator.com>2014-08-19 17:10:03 -0400
committerTavian Barnes <tavianator@tavianator.com>2015-10-25 11:03:56 -0400
commit7b09710392d35fb55b52031d447a542d99fc6b4b (patch)
tree270eb927ee8c52ceeb99926ebf4843704775a610 /libdimension/dimension/platform
parent200c86b91ea7063d35be3bffc11c5da53c054653 (diff)
downloaddimension-7b09710392d35fb55b52031d447a542d99fc6b4b.tar.xz
Modularize the libdimension codebase.
Diffstat (limited to 'libdimension/dimension/platform')
-rw-r--r--libdimension/dimension/platform/timer.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/libdimension/dimension/platform/timer.h b/libdimension/dimension/platform/timer.h
new file mode 100644
index 0000000..bcf4a9d
--- /dev/null
+++ b/libdimension/dimension/platform/timer.h
@@ -0,0 +1,58 @@
+/*************************************************************************
+ * Copyright (C) 2010-2011 Tavian Barnes <tavianator@tavianator.com> *
+ * *
+ * This file is part of The Dimension Library. *
+ * *
+ * The Dimension Library is free software; you can redistribute it and/ *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version. *
+ * *
+ * The Dimension Library 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 *
+ * Lesser General Public License for more details. *
+ * *
+ * You should have received a copy of the GNU Lesser General Public *
+ * License along with this program. If not, see *
+ * <http://www.gnu.org/licenses/>. *
+ *************************************************************************/
+
+/**
+ * @file
+ * A platform-agnostic timer abstraction.
+ */
+
+#ifndef DMNSN_PLATFORM_H
+#error "Please include <dimension/platform.h> instead of this header directly."
+#endif
+
+/** A platform-agnotic timer. */
+typedef struct dmnsn_timer {
+ double real; /**< Wall-clock time. */
+ double user; /**< Time spent executing. */
+ double system; /**< Time spent waiting for the system. */
+} dmnsn_timer;
+
+/** A standard format string for timers. */
+#define DMNSN_TIMER_FORMAT "%.2fs (user: %.2fs; system: %.2fs)"
+/**
+ * The appropriate arguments to printf() a timer. For example:
+ * @code
+ * printf(DMNSN_TIMER_FORMAT "\n", DMNSN_TIMER_PRINTF(timer));
+ * @endcode
+ * will print something like "1.00s (user: 0.99s; system: 0.01s)".
+ */
+#define DMNSN_TIMER_PRINTF(t) (t).real, (t).user, (t).system
+
+/**
+ * Start a timer. The values of an unfinished timer are undefined.
+ * @param[in,out] timer The timer to start.
+ */
+void dmnsn_timer_start(dmnsn_timer *timer);
+
+/**
+ * Finish timing. The members of the timer struct will now contain timing data.
+ * @param[in,out] timer The timer to stop.
+ */
+void dmnsn_timer_stop(dmnsn_timer *timer);