X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fio%2Fbackend.h;h=e2090ff14068ebe0a34317941bb8efc6f7cb9a0a;hp=30a338f77a73958eaf83acad62eb87b027d27025;hb=12ab811533406e22b78ce8b227474f1056375ae4;hpb=641b511049e5c03d45ada0c3fd829691b173e5d1;ds=sidebyside

diff --git a/ccan/io/backend.h b/ccan/io/backend.h
index 30a338f7..e2090ff1 100644
--- a/ccan/io/backend.h
+++ b/ccan/io/backend.h
@@ -3,6 +3,17 @@
 #define CCAN_IO_BACKEND_H
 #include <stdbool.h>
 #include <ccan/timer/timer.h>
+#include <poll.h>
+
+/* A setting for actions to always run (eg. zero-length reads). */
+#define POLLALWAYS (((POLLIN|POLLOUT) + 1) & ~((POLLIN|POLLOUT)))
+
+struct io_alloc {
+	void *(*alloc)(size_t size);
+	void *(*realloc)(void *ptr, size_t size);
+	void (*free)(void *ptr);
+};
+extern struct io_alloc io_alloc;
 
 struct fd {
 	int fd;