Mesa (master): os: Time abstractions.
Jose Fonseca
jrfonseca at kemper.freedesktop.org
Thu Feb 4 18:27:56 UTC 2010
Module: Mesa
Branch: master
Commit: 2ef6d311b7cba30deb3d7e38eec14cef89e7e579
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=2ef6d311b7cba30deb3d7e38eec14cef89e7e579
Author: José Fonseca <jfonseca at vmware.com>
Date: Thu Feb 4 18:23:49 2010 +0000
os: Time abstractions.
Simplified version of u_time.[ch]
---
src/gallium/auxiliary/Makefile | 1 +
src/gallium/auxiliary/SConscript | 1 +
src/gallium/auxiliary/os/os_time.c | 128 ++++++++++++++++++++++++++++++++++++
src/gallium/auxiliary/os/os_time.h | 92 ++++++++++++++++++++++++++
4 files changed, 222 insertions(+), 0 deletions(-)
diff --git a/src/gallium/auxiliary/Makefile b/src/gallium/auxiliary/Makefile
index e38990a..7d5e009 100644
--- a/src/gallium/auxiliary/Makefile
+++ b/src/gallium/auxiliary/Makefile
@@ -49,6 +49,7 @@ C_SOURCES = \
indices/u_indices_gen.c \
indices/u_unfilled_gen.c \
os/os_misc.c \
+ os/os_time.c \
pipebuffer/pb_buffer_malloc.c \
pipebuffer/pb_bufmgr_alt.c \
pipebuffer/pb_bufmgr_cache.c \
diff --git a/src/gallium/auxiliary/SConscript b/src/gallium/auxiliary/SConscript
index bfc68ba..21b4435 100644
--- a/src/gallium/auxiliary/SConscript
+++ b/src/gallium/auxiliary/SConscript
@@ -83,6 +83,7 @@ source = [
'indices/u_indices_gen.c',
'indices/u_unfilled_gen.c',
'os/os_misc.c',
+ 'os/os_time.c',
'pipebuffer/pb_buffer_fenced.c',
'pipebuffer/pb_buffer_malloc.c',
'pipebuffer/pb_bufmgr_alt.c',
diff --git a/src/gallium/auxiliary/os/os_time.c b/src/gallium/auxiliary/os/os_time.c
new file mode 100644
index 0000000..6259142
--- /dev/null
+++ 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 at 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 */
diff --git a/src/gallium/auxiliary/os/os_time.h b/src/gallium/auxiliary/os/os_time.h
new file mode 100644
index 0000000..5b55c1b
--- /dev/null
+++ b/src/gallium/auxiliary/os/os_time.h
@@ -0,0 +1,92 @@
+/**************************************************************************
+ *
+ * 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 at vmware.com>
+ */
+
+#ifndef _OS_TIME_H_
+#define _OS_TIME_H_
+
+
+#include "pipe/p_config.h"
+
+#if defined(PIPE_OS_UNIX)
+# include <unistd.h> /* usleep */
+#endif
+
+#include "pipe/p_compiler.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/*
+ * Get the current time in microseconds from an unknown base.
+ */
+int64_t
+os_time_get(void);
+
+
+/*
+ * Sleep.
+ */
+#if defined(PIPE_OS_UNIX)
+#define os_time_sleep(_usecs) usleep(_usecs)
+#else
+void
+os_time_sleep(int64_t usecs);
+#endif
+
+
+/*
+ * Helper function for detecting time outs, taking in account overflow.
+ *
+ * Returns true the the current time has elapsed beyond the specified interval.
+ */
+static INLINE boolean
+os_time_timeout(int64_t start,
+ int64_t end,
+ int64_t curr)
+{
+ if(start <= end)
+ return !(start <= curr && curr < end);
+ else
+ return !((start <= curr) || (curr < end));
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _OS_TIME_H_ */
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