+ else
+ t->error = -E_STDIN_EOF;
+}
+
+#define STDIN_INPUT_BUFFER_SIZE (1024 * 32)
+static void stdin_post_select_btr(struct sched *s, struct task *t)
+{
+ struct stdin_task *sit = container_of(t, struct stdin_task, task);
+ ssize_t ret;
+ char *buf = NULL;
+
+ t->error = 0;
+ 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) {
+ 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;
+}
+
+/**
+ * Initialize a stdin task structure with default values.
+ *
+ * \param sit The stdin task structure.
+ *
+ * This fills in the pre/post select function pointers of the task structure
+ * given by \a sit. Moreover, the stdin file desctiptor is set to nonblocking
+ * mode and \a bufsize is initialized to 16 KB (but no buffer is allocated).
+ */
+void stdin_set_defaults(struct stdin_task *sit)
+{
+ int ret;
+
+ sit->bufsize = 32 * 1024;
+ if (sit->btrn) {
+ sit->task.pre_select = stdin_pre_select_btr;
+ sit->task.post_select = stdin_post_select_btr;
+ } else {
+ sit->task.pre_select = stdin_pre_select;
+ sit->task.post_select = stdin_post_select;
+ }
+ sprintf(sit->task.status, "stdin reader");
+ ret = mark_fd_nonblocking(STDIN_FILENO);
+ if (ret >= 0)
+ return;
+ sit->output_error = NULL;
+ PARA_EMERG_LOG("%s\n", para_strerror(-ret));
+ exit(EXIT_FAILURE);