recv: Make ->btrp and ->fd generic.

[paraslash.git] / recv.h

diff --git a/recv.h b/recv.h
index 101df82418b9897e33ae44fc31242a3743790175..92b63d27540463034ac7ac8bee970babe4ef5e94 100644 (file)
--- a/recv.h
+++ b/recv.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -12,20 +12,29 @@
 struct receiver_node {
        /** Points to the corresponding receiver. */
        struct receiver *receiver;
-       /** The output buffer. */
-       char *buf;
-       /** The amount of bytes in \a buf. */
-       size_t loaded;
        /** Receiver-specific data. */
        void *private_data;
-       /** Pointer to the error member of the consumer. */
-       int *output_error;
        /** Pointer to the configuration data for this instance. */
        void *conf;
        /** The task associated with this instance. */
        struct task task;
        /** The receiver node is always the root of the buffer tree. */
-       struct btr_node *btr_root;
+       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;
 };
 
 /**
@@ -56,6 +65,13 @@ struct receiver {
         * \a argc and \a argv.
         */
        void *(*parse_config)(int argc, char **argv);
+       /**
+        * Deallocate the configuration structure of a receiver node.
+        *
+        * This calls the receiver-specific cleanup function generated by
+        * gengetopt.
+        */
+       void (*free_config)(void *conf);
        /**
         * Open one instance of the receiver.
         *
@@ -77,12 +93,6 @@ struct receiver {
         * \sa receiver_node.
         */
        void (*close)(struct receiver_node *rn);
-       /**
-        * Deactivate the receiver.
-        *
-        * Clean up what init has allocated.
-        */
-       void (*shutdown)(void);
        /**
         * Add file descriptors to fd_sets and compute timeout for select(2).
         *
@@ -111,18 +121,6 @@ struct receiver {
        struct ggo_help help;
 };
 
-
-/** \cond */
-extern void http_recv_init(struct receiver *r);
-#define HTTP_RECEIVER {.name = "http", .init = http_recv_init},
-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},
-
-extern struct receiver receivers[];
-/** \endcond */
-
 /** Define an array of all available receivers. */
 #define DEFINE_RECEIVER_ARRAY struct receiver receivers[] = { \
        HTTP_RECEIVER \
@@ -136,3 +134,16 @@ extern struct receiver receivers[];
 void recv_init(void);
 void *check_receiver_arg(char *ra, int *receiver_num);
 void print_receiver_helps(int detailed);
+int generic_recv_pre_select(struct sched *s, struct task *t);
+
+/** \cond receiver */
+extern void http_recv_init(struct receiver *r);
+#define HTTP_RECEIVER {.name = "http", .init = http_recv_init},
+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},
+
+extern struct receiver receivers[];
+/** \endcond receiver */
+