From e10f9802088722e85fd4f2f9cb006d2bdca37d3c Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Sun, 10 Dec 2023 22:09:47 +0100
Subject: Add atexit

---
 c/atexit/.gitignore |  1 +
 c/atexit/Makefile   |  8 ++++++++
 c/atexit/main.c     | 33 +++++++++++++++++++++++++++++++++
 3 files changed, 42 insertions(+)
 create mode 100644 c/atexit/.gitignore
 create mode 100644 c/atexit/Makefile
 create mode 100644 c/atexit/main.c

diff --git a/c/atexit/.gitignore b/c/atexit/.gitignore
new file mode 100644
index 0000000..e4608d8
--- /dev/null
+++ b/c/atexit/.gitignore
@@ -0,0 +1 @@
+atexit
diff --git a/c/atexit/Makefile b/c/atexit/Makefile
new file mode 100644
index 0000000..ffcb7ba
--- /dev/null
+++ b/c/atexit/Makefile
@@ -0,0 +1,8 @@
+include ../base.mk
+
+all: atexit
+atexit: main.c
+	$(CC) $(CFLAGS) -lpthread -o $@ $<
+
+clean:
+	rm -f atexit
diff --git a/c/atexit/main.c b/c/atexit/main.c
new file mode 100644
index 0000000..1729edf
--- /dev/null
+++ b/c/atexit/main.c
@@ -0,0 +1,33 @@
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static void *loop(void *);
+static void handler(void);
+
+int
+main(void)
+{
+	pthread_t t;
+
+	atexit(handler);
+	pthread_create(&t, NULL, loop, NULL);
+	sleep(1);
+	return EXIT_SUCCESS;
+}
+
+void *
+loop(void *_)
+{
+	(void)_;
+	for (;;)
+		;
+	return NULL;
+}
+
+void
+handler(void)
+{
+	puts("hello, world!");
+}
-- 
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