Move libc replacement files from src/backend/port to src/port.

1 files changed, 58 insertions, 0 deletions

diff --git a/src/port/getrusage.c b/src/port/getrusage.c
new file mode 100644
index 00000000000..14d37480460
--- /dev/null
+++ b/src/port/getrusage.c
@@ -0,0 +1,58 @@
+/* $Id: getrusage.c,v 1.1 2002/07/18 04:13:59 momjian Exp $ */
+
+#include <stdio.h>
+#include <errno.h>
+#include "rusagestub.h"
+
+/* This code works on:
+ *		univel
+ *		solaris_i386
+ *		sco
+ *		solaris_sparc
+ *		svr4
+ *		hpux 9.*
+ * which currently is all the supported platforms that don't have a
+ * native version of getrusage().  So, if configure decides to compile
+ * this file at all, we just use this version unconditionally.
+ */
+
+int
+getrusage(int who, struct rusage * rusage)
+{
+	struct tms	tms;
+	int			tick_rate = CLK_TCK;	/* ticks per second */
+	clock_t		u,
+				s;
+
+	if (rusage == (struct rusage *) NULL)
+	{
+		errno = EFAULT;
+		return -1;
+	}
+	if (times(&tms) < 0)
+	{
+		/* errno set by times */
+		return -1;
+	}
+	switch (who)
+	{
+		case RUSAGE_SELF:
+			u = tms.tms_utime;
+			s = tms.tms_stime;
+			break;
+		case RUSAGE_CHILDREN:
+			u = tms.tms_cutime;
+			s = tms.tms_cstime;
+			break;
+		default:
+			errno = EINVAL;
+			return -1;
+	}
+#define TICK_TO_SEC(T, RATE)	((T)/(RATE))
+#define TICK_TO_USEC(T,RATE)	(((T)%(RATE)*1000000)/RATE)
+	rusage->ru_utime.tv_sec = TICK_TO_SEC(u, tick_rate);
+	rusage->ru_utime.tv_usec = TICK_TO_USEC(u, tick_rate);
+	rusage->ru_stime.tv_sec = TICK_TO_SEC(s, tick_rate);
+	rusage->ru_stime.tv_usec = TICK_TO_USEC(u, tick_rate);
+	return 0;
+}