From 72484e6dd6d2c80d9ec7b358e840824b6fa8428c Mon Sep 17 00:00:00 2001
From: Timo Kokkonen <kaapeli@itanic.dy.fi>
Date: Sat, 3 Dec 2011 18:32:07 +0200
Subject: [PATCH] Intial commit

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>
---
 .gitignore   |  3 +++
 Makefile     | 10 ++++++++
 buddywatch.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 78 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 buddywatch.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..320edf7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.o
+buddywatch
+*~
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..405d82a
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+buddywatch: buddywatch.c
+	gcc -Wall -g -O2 $^ -o $@
+
+TAGS:
+	etags *.[ch]
+
+clean:
+	rm -rfv buddywatch *.o *~
+
+.PHONY: TAGS clean
diff --git a/buddywatch.c b/buddywatch.c
new file mode 100644
index 0000000..2a207d3
--- /dev/null
+++ b/buddywatch.c
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#define MAX_ORDER 11
+
+int main(int argc, char *argv[])
+{
+	long long int buddy[MAX_ORDER], bud[MAX_ORDER], tot;
+	long int i;
+	FILE *file;
+	char str[1024], *s;
+
+	while (1) 
+	{
+		file = fopen("/proc/buddyinfo", "r");
+		if (!file)
+			perror("fopen failed");
+
+		for (i = 0; i < MAX_ORDER; i++)
+			buddy[i] = 0;
+
+		while (fgets(str, sizeof(str), file)) {
+			for (i = 0; i < sizeof(str); i++)
+				if (str[i] == 'z')
+					break;
+
+			for (; i < sizeof(str); i++)
+				if (isspace(str[i]))
+					break;
+
+			for (; i < sizeof(str); i++)
+				if (!isspace(str[i]))
+					break;
+
+			for (; i < sizeof(str); i++)
+				if (isspace(str[i]))
+					break;
+
+			s = &str[i];
+
+			i = sscanf(s, " %lld %lld %lld %lld"
+				   "%lld %lld %lld %lld %lld %lld %lld\n",
+				   &bud[0], &bud[1], &bud[2], &bud[3], &bud[4],
+				   &bud[5], &bud[6], &bud[7], &bud[8], &bud[9],
+				   &bud[10]);
+			for (i = 0; i < MAX_ORDER; i++)
+				buddy[i] += bud[i];
+		}
+
+		tot = 0;
+		for (i = 0; i < MAX_ORDER; i++) {
+			printf("% 5lld.%02lldM",
+				(buddy[i] * (1 << (i + 2))) >> 10,
+				(buddy[i] * (1 << (i + 2))) % 1024 * 100 / 1024);
+			tot += buddy[i] * (1 << (i + 2));
+		}
+		printf("% 5lldM\n", tot >> 10);
+		sleep(1);
+
+		fclose(file);
+	}
+	return 0;
+}
-- 
2.44.0