/** \file filter_common.c Common helper functions for filter input/output. */
+#include <regex.h>
#include <sys/types.h>
#include <dirent.h>
+#include <stdbool.h>
#include "para.h"
#include "list.h"
#include "sched.h"
#include "fd.h"
#include "ggo.h"
+#include "buffer_tree.h"
#include "filter.h"
#include "error.h"
#include "string.h"
*/
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);
}
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;
}
}
}
+
+/** 640K ought to be enough for everybody ;) */
+#define FILTER_MAX_PENDING (640 * 1024)
+
+int prepare_filter_node(struct filter_node *fn)
+{
+ struct btr_node *btrn = fn->btrn;
+ size_t iqs;
+
+ if (btr_eof(btrn))
+ return -E_FC_EOF;
+ if (btr_bytes_pending(btrn) > FILTER_MAX_PENDING)
+ return 0;
+ iqs = btr_get_input_queue_size(btrn);
+ if (iqs < fn->min_iqs && !btr_no_parent(btrn))
+ return 0;
+ assert(iqs != 0);
+ /* avoid "buffer too small" errors from the decoder */
+ btr_merge(btrn, fn->min_iqs);
+ return 1;
+}
+
+void generic_filter_pre_select(struct sched *s, struct task *t)
+{
+ struct filter_node *fn = container_of(t, struct filter_node, task);
+ size_t iqs = btr_get_input_queue_size(fn->btrn);
+
+ t->error = 0;
+ if (iqs < fn->min_iqs)
+ return;
+ if (btr_bytes_pending(fn->btrn) > FILTER_MAX_PENDING)
+ return; /* FIXME, should use reasonable bound on timeout */
+ s->timeout.tv_sec = 0;
+ s->timeout.tv_usec = 1;
+}
+