FOR_EACH_WRITER_NODE(i, g) {
struct writer_node *wn = &g->writer_nodes[i];
t->ret = wn->task.ret;
- if (t->ret < 0)
+ if (t->ret < 0) {
+ g->eof = 1;
return;
+ }
if (!i)
min_written = t->ret;
else
{
int i, ret = 1;
- PARA_NOTICE_LOG("opening wng with %d writer(s)\n", g->num_writers);
+ PARA_NOTICE_LOG("opening wng %p with %d writer(s)\n", g, g->num_writers);
+ register_task(&g->task);
FOR_EACH_WRITER_NODE(i, g) {
struct writer_node *wn = &g->writer_nodes[i];
+ wn->wng = g;
ret = wn->writer->open(wn);
if (ret < 0)
- goto out;
+ goto err_out;
wn->chunk_bytes = ret;
g->max_chunk_bytes = PARA_MAX(g->max_chunk_bytes, ret);
- wn->wng = g;
- PARA_DEBUG_LOG("pre_select: %p\n", &wn->writer->pre_select);
- PARA_DEBUG_LOG("post_select: %p\n", &wn->writer->post_select);
wn->task.pre_select = wn->writer->pre_select;
wn->task.post_select = wn->writer->post_select;
wn->task.private_data = wn;
}
sprintf(g->task.status, "%s", "writer node group");
g->eof = 0;
- register_task(&g->task);
-out:
+ return 1;
+err_out:
+ unregister_task(&g->task);
+ while (i > 0) {
+ struct writer_node *wn = &g->writer_nodes[--i];
+ unregister_task(&wn->task);
+ wn->writer->close(wn);
+ }
+ g->num_writers = 0;
+ g->eof = 1;
return ret;
}
-void wng_destroy(struct writer_node_group *g)
+void wng_unregister(struct writer_node_group *g)
{
- if (!g)
- return;
- free(g->written);
- free(g->writer_nodes);
- free(g);
+ int i;
+
+ FOR_EACH_WRITER_NODE(i, g) {
+ struct writer_node *wn = &g->writer_nodes[i];
+ unregister_task(&wn->task);
+ }
+ unregister_task(&g->task);
+ g->eof = 1;
}
void wng_close(struct writer_node_group *g)
{
int i;
+ if (!g)
+ return;
PARA_NOTICE_LOG("closing wng with %d writer(s)\n", g->num_writers);
FOR_EACH_WRITER_NODE(i, g) {
struct writer_node *wn = &g->writer_nodes[i];
- unregister_task(&wn->task);
wn->writer->close(wn);
}
+ free(g->written);
+ free(g->writer_nodes);
+ free(g);
}
struct writer_node_group *wng_new(unsigned num_writers)
g->written = para_calloc(num_writers * sizeof(size_t));
g->task.private_data = g;
g->task.post_select = wng_post_select;
- g->task.flags = POST_ADD_TAIL;
+ g->task.flags = 0;
return g;
}