sched: Provide alternative post_select variant.

[paraslash.git] / recv.h

diff --git a/recv.h b/recv.h
index 7555dfb4130010898145bb6bb89b679a5e69e78a..c48a6b3664e6e2466756ac28159daf1281730791 100644 (file)
--- a/recv.h
+++ b/recv.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2013 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -20,6 +20,21 @@ struct receiver_node {
        struct task task;
        /** The receiver node is always the root of the buffer tree. */
        struct btr_node *btrn;
+       /** Each receiver node maintains a buffer pool for the received data. */
+       struct btr_pool *btrp;
+       /**
+        * The file descriptor to receive the stream.
+        *
+        * The pre_select function of the receiver adds this file descriptor to
+        * the set of file descriptors which are watched for readability or
+        * writability, depending on the state of the connection (if any).
+        *
+        * If \a fd is readable, the post_select function of the receiver reads
+        * data from this fd into the buffer pool area of \a btrp.
+        *
+        * \sa \ref receiver.
+        */
+       int fd;
 };
 
 /**
@@ -93,17 +108,26 @@ struct receiver {
         * Evaluate the result from select().
         *
         * This hook gets called after the call to select(). It should check
-        * all file descriptors which were added to any of the the fd sets
-        * during the previous call to pre_select. According to the result, it
-        * may then use any non-blocking I/O to establish a connection or to
+        * all file descriptors which were added to any of the fd sets during
+        * the previous call to pre_select. According to the result, it may
+        * then use any non-blocking I/O to establish a connection or to
         * receive the audio data.
         *
         * \sa select(2), struct receiver.
         */
        void (*post_select)(struct sched *s, struct task *t);
+       /** New variant, see sched.h. */
+       int (*new_post_select)(struct sched *s, struct task *t);
 
        /** The two help texts of this receiver. */
        struct ggo_help help;
+       /**
+        * Answer a buffer tree query.
+        *
+        * This optional function pointer is used for inter node communications
+        * of the buffer tree nodes. See \ref btr_command_handler for details.
+        */
+       btr_command_handler execute;
 };
 
 /** Define an array of all available receivers. */
@@ -111,6 +135,7 @@ struct receiver {
        HTTP_RECEIVER \
        DCCP_RECEIVER \
        UDP_RECEIVER \
+       AFH_RECEIVER \
        {.name = NULL}};
 
 /** Iterate over all available receivers. */
@@ -128,6 +153,7 @@ extern void dccp_recv_init(struct receiver *r);
 #define DCCP_RECEIVER {.name = "dccp", .init = dccp_recv_init},
 extern void udp_recv_init(struct receiver *r);
 #define UDP_RECEIVER {.name = "udp", .init = udp_recv_init},
+#define AFH_RECEIVER /* not active by default */
 
 extern struct receiver receivers[];
 /** \endcond receiver */