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authorJosé Fonseca <jfonseca@vmware.com>2010-02-04 18:23:49 +0000
committerJosé Fonseca <jfonseca@vmware.com>2010-02-04 18:23:49 +0000
commit2ef6d311b7cba30deb3d7e38eec14cef89e7e579 (patch)
tree72ff987f697a484a1397cb7fdd38c18608794ca9 /src/gallium/auxiliary/os/os_time.c
parent24ea02553efccc52581479819d8ead8d2bb06aaf (diff)
os: Time abstractions.
Simplified version of u_time.[ch]
Diffstat (limited to 'src/gallium/auxiliary/os/os_time.c')
-rw-r--r--src/gallium/auxiliary/os/os_time.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/os/os_time.c b/src/gallium/auxiliary/os/os_time.c
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+++ b/src/gallium/auxiliary/os/os_time.c
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+/**************************************************************************
+ *
+ * Copyright 2008-2010 VMware, Inc.
+ * 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 VMWARE 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 <jfonseca@vmware.com>
+ */
+
+
+#include "pipe/p_config.h"
+
+#if !defined(PIPE_OS_EMBEDDED)
+
+#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_APPLE) || defined(PIPE_OS_HAIKU)
+# include <sys/time.h> /* timeval */
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+# include <windows.h>
+# include <winddi.h>
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+# include <windows.h>
+extern VOID KeQuerySystemTime(PLARGE_INTEGER);
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
+# include <windows.h>
+#else
+# error Unsupported OS
+#endif
+
+#include "os_time.h"
+
+
+int64_t
+os_time_get(void)
+{
+#if defined(PIPE_OS_UNIX)
+
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_usec + tv.tv_sec*1000000LL;
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+
+ static LONGLONG frequency;
+ LONGLONG counter;
+ if(!frequency)
+ EngQueryPerformanceFrequency(&frequency);
+ EngQueryPerformanceCounter(&counter);
+ return counter*INT64_C(1000000)/frequency;
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER) || defined(PIPE_SUBSYSTEM_WINDOWS_CE)
+
+ static LARGE_INTEGER frequency;
+ LARGE_INTEGER counter;
+ if(!frequency.QuadPart)
+ QueryPerformanceFrequency(&frequency);
+ QueryPerformanceCounter(&counter);
+ return counter.QuadPart*INT64_C(1000000)/frequency.QuadPart;
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_MINIPORT)
+
+ /* Updated every 10 miliseconds, measured in units of 100 nanoseconds.
+ * http://msdn.microsoft.com/en-us/library/ms801642.aspx */
+ LARGE_INTEGER counter;
+ KeQuerySystemTime(&counter);
+ return counter.QuadPart/10;
+
+#endif
+}
+
+
+#if defined(PIPE_SUBSYSTEM_WINDOWS_DISPLAY)
+
+void
+os_time_sleep(int64_t usecs)
+{
+ static LONGLONG frequency;
+ 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));
+}
+
+#elif defined(PIPE_SUBSYSTEM_WINDOWS_USER)
+
+void
+os_time_sleep(int64_t usecs)
+{
+ Sleep((usecs + 999) / 1000);
+}
+
+#endif
+
+
+#endif /* !PIPE_OS_EMBEDDED */