os: Time abstractions.

Simplified version of u_time.[ch]

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
new file mode 100644
index 0000000000..6259142bec
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+++ b/src/gallium/auxiliary/os/os_time.c
@@ -0,0 +1,128 @@
+/**************************************************************************
+ *
+ * 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 */