1 files changed, 61 insertions, 0 deletions
diff --git a/src/port/win32getrusage.c b/src/port/win32getrusage.c
new file mode 100644
index 0000000..ce28b9b
--- /dev/null
+++ b/src/port/win32getrusage.c
@@ -0,0 +1,61 @@
+/*-------------------------------------------------------------------------
+ *
+ * win32getrusage.c
+ *	  get information about resource utilisation
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *	  src/port/win32getrusage.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "c.h"
+
+#include <sys/resource.h>
+
+int
+getrusage(int who, struct rusage *rusage)
+{
+	FILETIME	starttime;
+	FILETIME	exittime;
+	FILETIME	kerneltime;
+	FILETIME	usertime;
+	ULARGE_INTEGER li;
+
+	if (who != RUSAGE_SELF)
+	{
+		/* Only RUSAGE_SELF is supported in this implementation for now */
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (rusage == (struct rusage *) NULL)
+	{
+		errno = EFAULT;
+		return -1;
+	}
+	memset(rusage, 0, sizeof(struct rusage));
+	if (GetProcessTimes(GetCurrentProcess(),
+						&starttime, &exittime, &kerneltime, &usertime) == 0)
+	{
+		_dosmaperr(GetLastError());
+		return -1;
+	}
+
+	/* Convert FILETIMEs (0.1 us) to struct timeval */
+	memcpy(&li, &kerneltime, sizeof(FILETIME));
+	li.QuadPart /= 10L;			/* Convert to microseconds */
+	rusage->ru_stime.tv_sec = li.QuadPart / 1000000L;
+	rusage->ru_stime.tv_usec = li.QuadPart % 1000000L;
+
+	memcpy(&li, &usertime, sizeof(FILETIME));
+	li.QuadPart /= 10L;			/* Convert to microseconds */
+	rusage->ru_utime.tv_sec = li.QuadPart / 1000000L;
+	rusage->ru_utime.tv_usec = li.QuadPart % 1000000L;
+
+	return 0;
+}