sched: Add missing documentation for timeout-request functions.

[paraslash.git] / dccp_recv.c

diff --git a/dccp_recv.c b/dccp_recv.c
index 07f616657a7db4ca0dfe5b9d318f542c215a18c6..e0d3e23481f9b2a6b3390ffa9397257b1e095b0d 100644 (file)
--- a/dccp_recv.c
+++ b/dccp_recv.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -11,6 +11,7 @@
  * (C) 2005 Ian McDonald <imcdnzl@gmail.com>
  */
 
+#include <regex.h>
 #include <sys/types.h>
 #include <dirent.h>
 
@@ -18,16 +19,15 @@
 #include "error.h"
 #include "list.h"
 #include "sched.h"
+#include "ggo.h"
 #include "recv.h"
 #include "string.h"
 #include "net.h"
 #include "fd.h"
+#include "buffer_tree.h"
 
 #include "dccp_recv.cmdline.h"
 
-/** the size of the output buffer */
-#define DCCP_BUFSIZE 40960
-
 /**
  * data specific to the dccp receiver
  *
@@ -36,6 +36,7 @@
 struct private_dccp_recv_data {
        /** the file descriptor for the dccp socket */
        int fd;
+       struct btr_pool *btrp;
 };
 
 
@@ -46,8 +47,7 @@ static void dccp_recv_close(struct receiver_node *rn)
 
        if (pdd && pdd->fd > 0)
                close(pdd->fd);
-       free(rn->buf);
-       rn->buf = NULL;
+       btr_pool_free(pdd->btrp);
        free(rn->private_data);
        rn->private_data = NULL;
 }
@@ -76,8 +76,8 @@ static int dccp_recv_open(struct receiver_node *rn)
        ret = mark_fd_nonblocking(fd);
        if (ret < 0)
                goto err;
-       rn->buf = para_calloc(DCCP_BUFSIZE);
        rn->private_data = pdd = para_calloc(sizeof(struct private_dccp_recv_data));
+       pdd->btrp = btr_pool_new("dccp_recv", 320 * 1024);
        pdd->fd = fd;
        return 1;
 err:
@@ -85,11 +85,6 @@ err:
        return ret;
 }
 
-static void dccp_shutdown(void)
-{
-       ; /* nothing to do */
-}
-
 static void *dccp_recv_parse_config(int argc, char **argv)
 {
        struct dccp_recv_args_info *tmp = para_calloc(sizeof(struct dccp_recv_args_info));
@@ -102,55 +97,78 @@ static void *dccp_recv_parse_config(int argc, char **argv)
 
 static void dccp_recv_pre_select(struct sched *s, struct task *t)
 {
-       struct receiver_node *rn = t->private_data;
+       struct receiver_node *rn = container_of(t, struct receiver_node, task);
        struct private_dccp_recv_data *pdd = rn->private_data;
 
-       t->ret = 1;
+       t->error = 0;
+       if (generic_recv_pre_select(s, t) <= 0)
+               return;
        para_fd_set(pdd->fd, &s->rfds, &s->max_fileno);
 }
 
 static void dccp_recv_post_select(struct sched *s, struct task *t)
 {
-       struct receiver_node *rn = t->private_data;
+       struct receiver_node *rn = container_of(t, struct receiver_node, task);
        struct private_dccp_recv_data *pdd = rn->private_data;
+       struct btr_node *btrn = rn->btrn;
+       struct iovec iov[2];
+       int ret, iovcnt;
 
-       if (rn->output_error && *rn->output_error) {
-               t->ret = *rn->output_error;
-               goto out;
-       }
-       t->ret = 1;
-       if (!s->select_ret || !FD_ISSET(pdd->fd, &s->rfds))
-               goto out; /* nothing to do */
-       t->ret = -E_DCCP_OVERRUN;
-       if (rn->loaded >= DCCP_BUFSIZE)
-               goto out;
-       t->ret = recv_bin_buffer(pdd->fd, rn->buf + rn->loaded,
-               DCCP_BUFSIZE - rn->loaded);
-       if (t->ret <= 0) {
-               if (!t->ret)
-                       t->ret = -E_RECV_EOF;
-               goto out;
+       ret = btr_node_status(btrn, 0, BTR_NT_ROOT);
+       if (ret < 0)
+               goto err;
+       if (ret == 0)
+               return;
+       if (!FD_ISSET(pdd->fd, &s->rfds))
+               return; /* nothing to do */
+       iovcnt = btr_pool_get_buffers(pdd->btrp, iov);
+       ret = -E_DCCP_OVERRUN;
+       if (iovcnt == 0)
+               goto err;
+       ret = para_readv(pdd->fd, iov, iovcnt);
+       if (ret == 0)
+               ret = -E_RECV_EOF;
+       if (ret < 0)
+               goto err;
+       if (ret <= iov[0].iov_len) /* only the first buffer was filled */
+               btr_add_output_pool(pdd->btrp, ret, btrn);
+       else { /* both buffers contain data */
+               btr_add_output_pool(pdd->btrp, iov[0].iov_len, btrn);
+               btr_add_output_pool(pdd->btrp, ret - iov[0].iov_len, btrn);
        }
-       rn->loaded += t->ret;
        return;
-out:
-       if (t->ret < 0)
-               rn->error = t->ret;
+err:
+       btr_remove_node(rn->btrn);
+       t->error = ret;
+}
+
+static void dccp_recv_free_config(void *conf)
+{
+       dccp_recv_cmdline_parser_free(conf);
+       free(conf);
 }
 
 /**
- * the init function of the dccp receiver
+ * The init function of the dccp receiver.
  *
- * \param r pointer to the receiver struct to initialize
+ * \param r Pointer to the receiver struct to initialize.
  *
- * Initialize all function pointers of \a r
+ * Initialize all function pointers of \a r.
  */
 void dccp_recv_init(struct receiver *r)
 {
-       r->shutdown = dccp_shutdown;
+       struct dccp_recv_args_info dummy;
+
+       dccp_recv_cmdline_parser_init(&dummy);
        r->open = dccp_recv_open;
        r->close = dccp_recv_close;
        r->pre_select = dccp_recv_pre_select;
        r->post_select = dccp_recv_post_select;
        r->parse_config = dccp_recv_parse_config;
+       r->free_config = dccp_recv_free_config;
+       r->help = (struct ggo_help) {
+               .short_help = dccp_recv_args_info_help,
+               .detailed_help = dccp_recv_args_info_detailed_help
+       };
+       dccp_recv_cmdline_parser_free(&dummy);
 }