1 files changed, 96 insertions, 0 deletions
diff --git a/erts/emulator/sys/win32/sys_time.c b/erts/emulator/sys/win32/sys_time.c
new file mode 100644
index 0000000000..50e43065b5
--- /dev/null
+++ b/erts/emulator/sys/win32/sys_time.c
@@ -0,0 +1,96 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1997-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+/*
+ * Purpose: System-dependent time functions.
+ */
+
+#include "sys.h"
+#include "assert.h"
+
+#ifdef __GNUC__
+#define LL_LITERAL(X) X##LL
+#else
+#define LL_LITERAL(X) X##i64
+#endif
+
+/******************* Routines for time measurement *********************/
+
+#define EPOCH_JULIAN_DIFF LL_LITERAL(11644473600)
+
+static SysHrTime wrap = 0;
+static DWORD last_tick_count = 0;
+
+int 
+sys_init_time(void)
+{
+    return 1;
+}
+
+void 
+sys_gettimeofday(SysTimeval *tv)
+{
+    SYSTEMTIME t;
+    FILETIME ft;
+    LONGLONG lft;
+
+    GetSystemTime(&t);
+    SystemTimeToFileTime(&t, &ft);
+    memcpy(&lft, &ft, sizeof(lft));
+    tv->tv_usec = (long) ((lft / LL_LITERAL(10)) % LL_LITERAL(1000000));
+    tv->tv_sec = (long) ((lft / LL_LITERAL(10000000)) - EPOCH_JULIAN_DIFF);
+}
+
+SysHrTime 
+sys_gethrtime(void) 
+{
+    DWORD ticks = (SysHrTime) (GetTickCount() & 0x7FFFFFFF);
+    if (ticks < (SysHrTime) last_tick_count) {
+	wrap += LL_LITERAL(1) << 31;
+    }
+    last_tick_count = ticks;
+    return ((((LONGLONG) ticks) + wrap) * LL_LITERAL(1000000));
+}
+
+clock_t 
+sys_times(SysTimes *buffer) {
+    clock_t kernel_ticks = (GetTickCount() / 
+			    (1000 / SYS_CLK_TCK)) & 0x7FFFFFFF;
+    FILETIME dummy;
+    LONGLONG user;
+    LONGLONG system;
+    
+    buffer->tms_utime = buffer->tms_stime = buffer->tms_cutime = 
+	buffer->tms_cstime = 0;
+
+    if (GetProcessTimes(GetCurrentProcess(), &dummy, &dummy,
+			(FILETIME *) &system, (FILETIME *) &user) == 0)
+	return kernel_ticks;
+    system /= (LONGLONG)(10000000 / SYS_CLK_TCK);
+    user /= (LONGLONG)(10000000 / SYS_CLK_TCK);
+    
+    buffer->tms_utime = (clock_t) (user & LL_LITERAL(0x7FFFFFFF));
+    buffer->tms_stime = (clock_t) (system & LL_LITERAL(0x7FFFFFFF));
+    return kernel_ticks;
+}
+
+
+
+
+
+