X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=recv_common.c;h=59630dfcc5f5f6fc5cfa973fd25c4476366b6b92;hp=a5689390987ac9c9b063dad200653e990268824e;hb=9d8fdf8898418711558f70a9630b2444036d8285;hpb=d1f203ea37e3b3ca0ac6db268331961caa47d705

diff --git a/recv_common.c b/recv_common.c
index a5689390..59630dfc 100644
--- a/recv_common.c
+++ b/recv_common.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -12,11 +12,10 @@
 #include "list.h"
 #include "sched.h"
 #include "ggo.h"
+#include "buffer_tree.h"
 #include "recv.h"
 #include "string.h"
 
-DEFINE_RECEIVER_ARRAY;
-
 /**
  * Call the init function of each paraslash receiver.
  */
@@ -32,48 +31,38 @@ static void *parse_receiver_args(int receiver_num, char *options)
 {
 	struct receiver *r = &receivers[receiver_num];
 	char **argv;
-	int argc, i;
+	int argc;
 	void *conf;
 
-
-	PARA_DEBUG_LOG("%s, options: %s\n", r->name,
-		options? options : "(none)");
 	if (options) {
-		PARA_DEBUG_LOG("options: %s\n", options);
-		argc = create_argv(options, " \t", &argv);
+		argc = create_shifted_argv(options, " \t", &argv);
 		if (argc < 0)
 			return NULL;
-		for (i = argc - 1; i >= 0; i--)
-			argv[i + 1] = argv[i];
-		argv[0] = NULL;
-		argc++;
 	} else {
 		argc = 1;
 		argv = para_malloc(2 * sizeof(char*));
-		argv[0] = NULL;
 		argv[1] = NULL;
 	}
+	argv[0] = make_message("%s_recv", r->name);
 	conf = r->parse_config(argc, argv);
-	for (i = 1; i < argc; i++)
-		free(argv[i]);
-	free(argv);
+	free_argv(argv);
 	return conf;
 }
 
 /**
- * check if given string is a valid command line for any receiver
+ * Check if the given string is a valid receiver specifier.
  *
  * \param \ra string of the form receiver_name:options
  * \param receiver_num contains the number of the receiver upon success
  *
- * This function checks whether \a ra starts with the name of a supported
- * paraslash receiver, optinally followed by a colon and any options for that
- * receiver. If a valid receiver name was found and further are present, the
- * remaining part of \a ra is passed to that receiver's config parser.
+ * This function checks whether \a ra starts with the name of a receiver,
+ * optionally followed by options for that receiver. If a valid receiver name
+ * was found the remaining part of \a ra is passed to the receiver's config
+ * parser.
  *
- * \return On success, a pointer to the gengetopt args info struct is returned
- * and \a receiver_num contains the number of the receiver. Otherwise this function
- * returns \p NULL.
+ * \return On success, a pointer to the receiver-specific gengetopt args info
+ * struct is returned and \a receiver_num contains the number of the receiver.
+ * On errors, the function returns \p NULL.
  */
 void *check_receiver_arg(char *ra, int *receiver_num)
 {
@@ -103,21 +92,44 @@ void *check_receiver_arg(char *ra, int *receiver_num)
 /**
  * Print out the help texts to all receivers.
  *
- * \param detailed Whether the detailed help should be printed.
+ * \param flags Passed to \ref ggo_print_help().
  */
-void print_receiver_helps(int detailed)
+void print_receiver_helps(unsigned flags)
 {
 	int i;
 
-	printf_or_die("\nAvailable receivers: \n\t");
+	printf_or_die("\nAvailable receivers: ");
 	FOR_EACH_RECEIVER(i)
 		printf_or_die("%s%s", i? " " : "", receivers[i].name);
-	printf_or_die("\n\n");
+	printf_or_die("\n");
 	FOR_EACH_RECEIVER(i) {
 		struct receiver *r = receivers + i;
 		if (!r->help.short_help)
 			continue;
-		printf_or_die("Options for %s:\n", r->name);
-		ggo_print_help(&r->help, detailed);
+		printf_or_die("\n%s: %s", r->name,
+			r->help.purpose);
+		ggo_print_help(&r->help, flags);
 	}
 }
+
+/**
+ * Simple pre-select hook, used by all receivers.
+ *
+ * \param s Scheduler info.
+ * \param rn The receiver node.
+ *
+ * This requests a minimal delay from the scheduler if the status of the buffer
+ * tree node indicates an error/eof condition. No file descriptors are added to
+ * the fd sets of \a s.
+ *
+ * \return The status of the btr node of the receiver node, i.e. the return
+ * value of the underlying call to \ref btr_node_status().
+ */
+int generic_recv_pre_select(struct sched *s, struct receiver_node *rn)
+{
+	int ret = btr_node_status(rn->btrn, 0, BTR_NT_ROOT);
+
+	if (ret < 0)
+		sched_min_delay(s);
+	return ret;
+}