1 files changed, 56 insertions, 0 deletions
diff --git a/WebCore/platform/win/SystemTimeWin.cpp b/WebCore/platform/win/SystemTimeWin.cpp
new file mode 100644
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+++ b/WebCore/platform/win/SystemTimeWin.cpp
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+/*
+ * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "SystemTime.h"
+
+#include <DateMath.h>
+#include <windows.h>
+
+#if COMPILER(MINGW)
+#include <float.h>
+#define FLOAT_MAX FLT_MAX
+#endif
+
+namespace WebCore {
+
+double currentTime()
+{
+    // Call through to our high-resolution JSC time code, since calls like GetSystemTimeAsFileTime and ftime are only accurate within 15ms.
+    // This resolution can be improved with timeBeginPeriod/timeEndPeriod on Vista, but these calls don't
+    // improve the resolution of date/time getters (GetSystemTimeAsFileTime, ftime, etc.) on XP.
+    return JSC::getCurrentUTCTimeWithMicroseconds() * 0.001;
+}
+
+float userIdleTime()
+{
+    LASTINPUTINFO lastInputInfo = {0};
+    lastInputInfo.cbSize = sizeof(LASTINPUTINFO);
+    if (::GetLastInputInfo(&lastInputInfo))
+        return (GetTickCount() - lastInputInfo.dwTime) * 0.001; // ::GetTickCount returns ms of uptime valid for up to 49.7 days.
+    return FLT_MAX; // return an arbitrarily high userIdleTime so that releasing pages from the page cache isn't postponed. 
+}
+
+}