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Diffstat (limited to 'src/exit/at_quick_exit.c')
-rw-r--r--src/exit/at_quick_exit.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/src/exit/at_quick_exit.c b/src/exit/at_quick_exit.c
new file mode 100644
index 00000000..85c3d26e
--- /dev/null
+++ b/src/exit/at_quick_exit.c
@@ -0,0 +1,29 @@
+#include <stdlib.h>
+#include "libc.h"
+
+#define COUNT 32
+
+static void (*funcs[COUNT])(void);
+static int count;
+static int lock[2];
+
+void __funcs_on_quick_exit()
+{
+ void (*func)(void);
+ LOCK(lock);
+ while (count > 0) {
+ func = funcs[--count];
+ UNLOCK(lock);
+ func();
+ LOCK(lock);
+ }
+}
+
+int at_quick_exit(void (*func)(void))
+{
+ if (count == 32) return -1;
+ LOCK(lock);
+ funcs[count++] = func;
+ UNLOCK(lock);
+ return 0;
+}