From 479caf15e7f57da098fd94b5f947ac45a6496663 Mon Sep 17 00:00:00 2001
From: Gerald Combs <gerald@wireshark.org>
Date: Mon, 11 Jul 2016 15:40:03 -0700
Subject: Add resource usage logging.

Add log_resource_usage, which prints the current and elapsed user and
system times. Add a usage example in packet_list_model.cpp.

Change-Id: I747161c754a3731e540821715cc9bb10b3dc821d
Reviewed-on: https://code.wireshark.org/review/16383
Petri-Dish: Gerald Combs <gerald@wireshark.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Gerald Combs <gerald@wireshark.org>
---
 wsutil/time_util.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'wsutil/time_util.c')

diff --git a/wsutil/time_util.c b/wsutil/time_util.c
index fc0a187407..5f6ac8a39f 100644
--- a/wsutil/time_util.c
+++ b/wsutil/time_util.c
@@ -22,8 +22,17 @@
 
 #include "config.h"
 
+#include <glib.h>
+
 #include "time_util.h"
 
+#ifndef _WIN32
+#include <sys/time.h>
+#include <sys/resource.h>
+#else
+#include <windows.h>
+#endif
+
 /* converts a broken down date representation, relative to UTC,
  * to a timestamp; it uses timegm() if it's available.
  * Copied from Glib source gtimer.c
@@ -62,6 +71,54 @@ mktime_utc(struct tm *tm)
 #endif /* !HAVE_TIMEGM */
 }
 
+static double last_utime = 0.0;
+static double last_stime = 0.0;
+
+void log_resource_usage(gboolean reset_delta, const char *format, ...) {
+	va_list ap;
+	GString *log_str = g_string_new("");
+	double utime;
+	double stime;
+
+#ifndef _WIN32
+	struct rusage ru;
+
+	getrusage(RUSAGE_SELF, &ru);
+
+	utime = ru.ru_utime.tv_sec + (ru.ru_utime.tv_usec / 1000000.0);
+	stime = ru.ru_stime.tv_sec + (ru.ru_stime.tv_usec / 1000000.0);
+#else /* _WIN32 */
+	HANDLE h_proc = GetCurrentProcess();
+	FILETIME cft, eft, kft, uft;
+	ULARGE_INTEGER uli_time;
+
+	GetProcessTimes(h_proc, &cft, &eft, &kft, &uft);
+
+	uli_time.LowPart = uft.dwLowDateTime;
+	uli_time.HighPart = uft.dwHighDateTime;
+	utime = uli_time.QuadPart / 10000000.0;
+	uli_time.LowPart = kft.dwLowDateTime;
+	uli_time.HighPart = kft.dwHighDateTime;
+	stime = uli_time.QuadPart / 1000000000.0;
+#endif /* _WIN32 */
+
+	if (reset_delta || last_utime == 0.0) {
+		last_utime = utime;
+		last_stime = stime;
+	}
+
+	g_string_append_printf(log_str, "user %.3f +%.3f sys %.3f +%.3f ",
+		utime, utime - last_utime, stime, stime - last_stime);
+
+	va_start(ap, format);
+	g_string_append_vprintf(log_str, format, ap);
+	va_end(ap);
+
+	g_warning("%s", log_str->str);
+	g_string_free(log_str, TRUE);
+
+}
+
 /*
  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
  *
-- 
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