port perfnotes to windows. addresses #1246

git-svn-id: file:///svn/toku/tokudb.1032b@8073 c7de825b-a66e-492c-adef-691d508d4ae1

windows/toku_time.c

+#include <windows.h>
+#include <assert.h>
+#include <toku_time.h>
+
+int 
+gettimeofday(struct timeval *tv, struct timezone *tz) {
+    FILETIME ft;
+    ULARGE_INTEGER t;
+
+    GetSystemTimeAsFileTime(&ft);
+    t.u.LowPart = ft.dwLowDateTime;
+    t.u.HighPart = ft.dwHighDateTime;
+    t.QuadPart -= 116444736000000000i64;
+    t.QuadPart /= 10; // convert to microseconds
+    if (tv) {
+        tv->tv_sec = t.QuadPart / 1000000;
+        tv->tv_usec = t.QuadPart % 1000000;
+    }
+    if (tz) {
+        assert(0);
+    }
+    return 0;
+}
+
+static int
+clock_get_realtime(struct timespec *ts) {
+    FILETIME ft;
+    ULARGE_INTEGER t;
+
+    GetSystemTimeAsFileTime(&ft);
+    t.u.LowPart = ft.dwLowDateTime;
+    t.u.HighPart = ft.dwHighDateTime;
+    t.QuadPart -= 116444736000000000i64;
+    t.QuadPart *= 100; // convert to nanoseconds
+    if (ts) {
+        ts->tv_sec = t.QuadPart / 1000000000;
+        ts->tv_nsec = t.QuadPart % 1000000000;
+    }
+    return 0;
+}
+
+int
+clock_gettime(clockid_t clockid, struct timespec *ts) {
+    if (clockid == CLOCK_REALTIME)
+        return clock_get_realtime(ts);
+    else
+        return -1;
+}

windows/toku_time.h

@@ -15,6 +15,17 @@ struct timezone {
 
 int gettimeofday(struct timeval *tv, struct timezone *tz);
 
+typedef enum {
+    CLOCK_REALTIME = 0
+} clockid_t;
+
+struct timespec {
+    long tv_sec;
+    long tv_nsec;
+};
+
+int clock_gettime(clockid_t clock_id, struct timespec *ts);
+
 #ifdef __cplusplus
 };
 #endif

windows/windows.c

@@ -222,26 +222,6 @@ toku_os_gettid(void) {
     return GetCurrentThreadId();
 }
 
-int 
-gettimeofday(struct timeval *tv, struct timezone *tz) {
-    FILETIME ft;
-    ULARGE_INTEGER t;
-
-    GetSystemTimeAsFileTime(&ft);
-    t.u.LowPart = ft.dwLowDateTime;
-    t.u.HighPart = ft.dwHighDateTime;
-    t.QuadPart -= 116444736000000000i64;
-    t.QuadPart /= 10;
-    if (tv) {
-        tv->tv_sec = t.QuadPart / 1000000;
-        tv->tv_usec = t.QuadPart % 1000000;
-    }
-    if (tz) {
-        assert(0);
-    }
-    return 0;
-}
-
 int
 toku_os_lock_file(char *name) {
     int fd = _sopen(name, O_CREAT, _SH_DENYRW, S_IREAD|S_IWRITE);