X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=filter_common.c;h=cfe08dd1e7274bff947ddc50e70f3711fe60422e;hp=a39eefd683ad4092951dd73272ab9968109ed351;hb=1dbe0b9828c0fe0fb642361473dedbcef7defc4c;hpb=5b4b082e7c37b46d5fa1729dff6496da8840085f

diff --git a/filter_common.c b/filter_common.c
index a39eefd6..cfe08dd1 100644
--- a/filter_common.c
+++ b/filter_common.c
@@ -1,11 +1,12 @@
 /*
- * Copyright (C) 2005-2008 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
 
 /** \file filter_common.c Common helper functions for filter input/output. */
 
+#include <regex.h>
 #include <sys/types.h>
 #include <dirent.h>
 
@@ -23,17 +24,14 @@ struct filter filters[NUM_SUPPORTED_FILTERS] = {FILTER_ARRAY};
 
 /**
  * Call the init function of each supported filter.
- *
- * \param all_filters the array of all supported filters.
- *
  * \sa filter::init
  */
-void filter_init(struct filter *all_filters)
+void filter_init(void)
 {
 	int i;
 
 	FOR_EACH_SUPPORTED_FILTER(i)
-		all_filters[i].init(all_filters + i);
+		filters[i].init(filters + i);
 }
 
 /**
@@ -46,7 +44,7 @@ void filter_init(struct filter *all_filters)
  */
 static void close_filter_callback(struct filter_callback *fcb)
 {
-	PARA_NOTICE_LOG("closing filter_callback %p, data: %p\n", fcb, fcb->data);
+	PARA_NOTICE_LOG("closing filter_callback %p\n", fcb);
 	list_del(&fcb->node);
 	fcb->close(fcb);
 }
@@ -102,7 +100,7 @@ static void call_callbacks(struct filter_node *fn, char *inbuf, size_t inlen,
  * there is input available for the filter node in question. If the convert
  * function consumed some or all of its input data, all registered input
  * callbacks are called.  Similarly, if a convert function produced output, all
- * registerd output callbacks get called.
+ * registered output callbacks get called.
  *
  * On errors a (negative) error code is stored in t->error.
  *
@@ -121,15 +119,13 @@ void filter_pre_select(__a_unused struct sched *s, struct task *t)
 		return;
 	}
 again:
-	ib = fc->inbuf;
+	ib = *fc->inbufp;
 	loaded = fc->in_loaded;
 	conv = 0;
 	FOR_EACH_FILTER_NODE(fn, fc, i) {
 		struct filter *f = filters + fn->filter_num;
 		if (fn->loaded < fn->bufsize) {
 			size_t size, old_fn_loaded = fn->loaded;
-//			PARA_DEBUG_LOG("fc %p loaded: %zd, calling %s convert\n",
-//				fc, *loaded, fn->filter->name);
 			t->error = f->convert(ib, *loaded, fn);
 			if (t->error < 0)
 				return;
@@ -137,25 +133,30 @@ again:
 			call_callbacks(fn, ib, size, fn->buf + old_fn_loaded,
 				fn->loaded - old_fn_loaded);
 			*loaded -= size;
-			conv += size;
-			if (*loaded && size) {
-//				PARA_DEBUG_LOG("moving %zd bytes in input "
-//					"buffer for %s filter\n",
-//					*loaded,  fn->filter->name);
+			conv += size + fn->loaded - old_fn_loaded;
+			if (*loaded && size)
 				memmove(ib, ib + size, *loaded);
-			}
 		}
 		ib = fn->buf;
 		loaded = &fn->loaded;
 	}
 	conv_total += conv;
-//	PARA_DEBUG_LOG("eof (in/out/fc): %d/%d/%d out_loaded: %zd, "
-//		"conv: %d, conv_total: %d\n", *fc->input_eof,
-//		fc->output_eof? *fc->output_eof : -42,
-//		fc->eof, *fc->out_loaded, conv, conv_total);
 	if (conv)
 		goto again;
-	if (!*fc->input_error)
+	if (conv_total) {
+		/*
+		 * Other pre_select functions might have already been called by
+		 * now and decided to do nothing, e.g. because their output
+		 * buffer was full or the input buffer was empty. We just
+		 * converted something which caused these buffers to change but
+		 * we can't make the other tasks reconsider their decision at
+		 * this point.  So force a minimal timeout for the next select
+		 * call to avoid unnecessary delays.
+		 */
+		s->timeout.tv_sec = 0;
+		s->timeout.tv_usec = 1;
+	}
+	if (*fc->input_error >= 0)
 		return;
 	if (*fc->out_loaded)
 		return;
@@ -208,15 +209,18 @@ static int parse_filter_args(int filter_num, char *options, void **conf)
 	if (!f->parse_config)
 		return strlen(options)? -E_BAD_FILTER_OPTIONS : filter_num;
 //	PARA_DEBUG_LOG("options: %s\n", options);
-	argc = split_args(options, &argv, " \t");
-//		PARA_DEBUG_LOG("argc = %d, argv[0]: %s\n", argc, argv[0]);
+	argc = create_argv(options, " \t", &argv);
+	if (argc < 0)
+		return -E_BAD_FILTER_OPTIONS;
+	PARA_DEBUG_LOG("argc = %d, argv[0]: %s\n", argc, argv[0]);
 	for (i = argc - 1; i >= 0; i--)
 		argv[i + 1] = argv[i];
 	argv[0] = para_strdup(f->name);
-	argc += 1;
+	argc++;
 	ret = f->parse_config(argc, argv, conf);
-	free(argv[0]);
-	free(argv);
+	free(argv[argc - 1]);
+	argv[argc - 1] = NULL;
+	free_argv(argv);
 	return ret < 0? ret : filter_num;
 }