Version 0.1.0 from FTP

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@10 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 85 insertions, 0 deletions

diff --git a/include/asterisk/io.h b/include/asterisk/io.h
new file mode 100755
index 000000000..64d039a51
--- /dev/null
+++ b/include/asterisk/io.h
@@ -0,0 +1,85 @@
+/*
+ * Asterisk
+ * 
+ * Mark Spencer <markster@marko.net>
+ *
+ * Copyright(C) 1999, Adtran, Inc.
+ * 
+ * Distributed under the terms of the GNU General Public License (GPL) Version 2
+ *
+ * I/O Managment (derived from Cheops-NG)
+ *
+ */
+
+#ifndef _IO_H
+#define _IO_H
+
+#include <sys/poll.h>		/* For POLL* constants */
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+#define AST_IO_IN 	POLLIN		/* Input ready */
+#define AST_IO_OUT 	POLLOUT 	/* Output ready */
+#define AST_IO_PRI	POLLPRI 	/* Priority input ready */
+
+/* Implicitly polled for */
+#define AST_IO_ERR	POLLERR 	/* Error condition (errno or getsockopt) */
+#define AST_IO_HUP	POLLHUP 	/* Hangup */
+#define AST_IO_NVAL	POLLNVAL	/* Invalid fd */
+
+/*
+ * An Asterisk IO callback takes its id, a file descriptor, list of events, and
+ * callback data as arguments and returns 0 if it should not be
+ * run again, or non-zero if it should be run again.
+ */
+
+struct io_context;
+
+/* Create a context for I/O operations */
+struct io_context *io_context_create();
+
+/* Destroy a context for I/O operations */
+void io_context_destroy(struct io_context *ioc);
+
+typedef int (*ast_io_cb)(int *id, int fd, short events, void *cbdata);
+#define AST_IO_CB(a) ((ast_io_cb)(a))
+
+/* 
+ * Watch for any of revents activites on fd, calling callback with data as 
+ * callback data.  Returns a pointer to ID of the IO event, or NULL on failure.
+ */
+extern int *ast_io_add(struct io_context *ioc, int fd, ast_io_cb callback, short events, void *data);
+
+/*
+ * Change an i/o handler, updating fd if > -1, callback if non-null, and revents
+ * if >-1, and data if non-null.  Returns a pointero to the ID of the IO event,
+ * or NULL on failure.
+ */
+extern int *ast_io_change(struct io_context *ioc, int *id, int fd, ast_io_cb callback, short events, void *data);
+
+/* 
+ * Remove an I/O id from consideration  Returns 0 on success or -1 on failure.
+ */
+extern int ast_io_remove(struct io_context *ioc, int *id);
+
+/*
+ * Wait for I/O to happen, returning after
+ * howlong milliseconds, and after processing
+ * any necessary I/O.  Returns the number of
+ * I/O events which took place.
+ */
+extern int ast_io_wait(struct io_context *ioc, int howlong);
+
+/*
+ * Debugging: Dump everything in the I/O array
+ */
+extern void ast_io_dump(struct io_context *ioc);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}
+#endif
+
+
+#endif