From 13c9bd6a7563f96aec806ddc1e4f14c1147f41e9 Mon Sep 17 00:00:00 2001
From: Wolfgang Draxinger <code@datenwolf.net>
Date: Sun, 12 Feb 2023 01:21:27 +0100
Subject: Renamed x11atomstuffer to x11atomicbomb as per a suggestion by 'ace +
 rule 3 broken rimu {ARY}' on the Zig language Discord

---
 samples/X11/x11atomicbomb/x11atomicbomb.c | 72 +++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 samples/X11/x11atomicbomb/x11atomicbomb.c

(limited to 'samples/X11/x11atomicbomb/x11atomicbomb.c')

diff --git a/samples/X11/x11atomicbomb/x11atomicbomb.c b/samples/X11/x11atomicbomb/x11atomicbomb.c
new file mode 100644
index 0000000..2dadc1a
--- /dev/null
+++ b/samples/X11/x11atomicbomb/x11atomicbomb.c
@@ -0,0 +1,72 @@
+/*------------------------------------------------------------------------
+ * What happens if you bomb the X11 server with large and large amounts
+ * of atoms? When does it run out of memory? How is its performance
+ * impaired by this? This is a little program to experimenting with
+ * torturing the X11 server by overfeeding it with atoms.
+ *
+ * (c) 2013 datenwolf
+ *
+ * License agreement: This source code is provided "as is". You
+ * can use this source code however you want for your own personal
+ * use. If you give this source code to anybody else then you must
+ * leave this message in it.
+------------------------------------------------------------------------*/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <time.h>
+#include <unistd.h>
+
+#include <X11/Xatom.h>
+#include <X11/Xutil.h>
+
+static int Xscreen;
+static Display *Xdisplay;
+
+char const doitkey[] = "wastemyX11server";
+
+int main(int argc, char *argv[])
+{
+	uint64_t i;
+	unsigned int r = getpid() ^ time(NULL);
+
+	if( argc < 2 || strcmp(argv[1], doitkey) ) {
+		fprintf(stderr,
+"***************** WARNING! *****************\n"
+"\n"
+"This program wastes serious resources of the\n"
+"X11 server it is started on. Do not execute\n"
+"this program on a production X11 session as\n"
+"the allocated atoms can not be freed/reused\n"
+"without resetting or quiting the X11 server.\n"
+"\n"
+"To actually perform this, do the following:\n"
+"\n"
+"%s %s\n"
+"\n"
+"***************** WARNING! *****************\n",
+			argv[0], doitkey);
+		return 0;
+	}
+
+	Xdisplay = XOpenDisplay(NULL);
+	if (!Xdisplay) {
+		fprintf(stderr, "Couldn't connect to X server\n");
+		return -1;
+	}
+	Xscreen = DefaultScreen(Xdisplay);
+
+	for(i=0; i < 0xffffffff; i++) {
+		char atomstr[33];
+		snprintf(atomstr,32, "_wasted_0x%08x_0x%08x", r, (unsigned int)i);
+		XInternAtom(Xdisplay, atomstr, False);
+		if( !(i % 0x00010000 ) ) {
+			fprintf(stderr, "%s\n", atomstr);
+		}
+	}
+
+	return 0;
+}
-- 
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