X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=stdin.c;h=abe69cafd4270ddf0e82ed9d2b30d3cf3603f43a;hp=079865f7ac982bbcdf8103a5418e58a0d05e25b2;hb=fc65f69bcfca74994e837adebdbbc16117ee77e2;hpb=aa234b7afe223879a7bd7274ce05a3a315a2ec49

diff --git a/stdin.c b/stdin.c
index 079865f7..abe69caf 100644
--- a/stdin.c
+++ b/stdin.c
@@ -46,18 +46,18 @@ static void stdin_pre_select(struct sched *s, struct task *t)
 	para_fd_set(STDIN_FILENO, &s->rfds, &s->max_fileno);
 }
 
-#define STDIN_MAX_PENDING (100 * 1024)
-
 static void stdin_pre_select_btr(struct sched *s, struct task *t)
 {
 	struct stdin_task *sit = container_of(t, struct stdin_task, task);
+	int ret;
 
 	t->error = 0;
-	if (btr_bytes_pending(sit->btrn) > STDIN_MAX_PENDING)
-		sit->check_fd = 0;
-	else {
-		sit->check_fd = 1;
+	ret = btr_node_status(sit->btrn, 0, BTR_NT_ROOT);
+	if (ret > 0)
 		para_fd_set(STDIN_FILENO, &s->rfds, &s->max_fileno);
+	else if (ret < 0) {
+		s->timeout.tv_sec = 0;
+		s->timeout.tv_usec = 1;
 	}
 }
 
@@ -102,30 +102,30 @@ static void stdin_post_select_btr(struct sched *s, struct task *t)
 	ssize_t ret;
 	char *buf = NULL;
 
-	t->error = -E_STDIN_NO_CHILD;
-	if (btr_no_children(sit->btrn))
-		goto err;
-
 	t->error = 0;
-	if (!sit->check_fd)
+	ret = btr_node_status(sit->btrn, 0, BTR_NT_ROOT);
+	if (ret < 0)
+		goto err;
+	if (ret == 0)
 		return;
 	if (!FD_ISSET(STDIN_FILENO, &s->rfds))
 		return;
-
 	buf = para_malloc(STDIN_INPUT_BUFFER_SIZE);
 	ret = read(STDIN_FILENO, buf, STDIN_INPUT_BUFFER_SIZE);
 	//PARA_CRIT_LOG("read ret: %d\n", ret);
-	if (ret < 0)
-		t->error = -ERRNO_TO_PARA_ERROR(errno);
-	if (ret == 0)
-		t->error = -E_STDIN_EOF;
-	if (t->error < 0)
+	if (ret <= 0) {
+		if (ret < 0)
+			ret = -ERRNO_TO_PARA_ERROR(errno);
+		else
+			ret = -E_STDIN_EOF;
 		goto err;
+	}
 	btr_add_output(buf, ret, sit->btrn);
 	return;
 err:
 	free(buf);
 	btr_remove_node(sit->btrn);
+	t->error = ret;
 }
 
 /**