#include <dirent.h> /* readdir() */
#include <assert.h>
+#include <stdbool.h>
#include "para.h"
#include "list.h"
#include "fd.h"
#include "error.h"
#include "stdout.h"
+#include "buffer_tree.h"
/**
* The pre_select function of the stdout task.
para_fd_set(STDOUT_FILENO, &s->wfds, &s->max_fileno);
}
+static void stdout_pre_select_btr(struct sched *s, struct task *t)
+{
+ struct stdout_task *sot = container_of(t, struct stdout_task, task);
+ size_t sz = btr_get_input_queue_size(sot->btrn);
+
+ t->error = 0;
+ sot->check_fd = 0;
+ if (sz == 0) {
+ if (btr_no_parent(sot->btrn)) {
+ s->timeout.tv_sec = 0;
+ s->timeout.tv_usec = 1;
+ }
+ return;
+ }
+ sot->check_fd = 1;
+ para_fd_set(STDOUT_FILENO, &s->wfds, &s->max_fileno);
+}
+
/**
* The post select function of the stdout task.
*
memmove(*sot->bufp, *sot->bufp + ret, *sot->loaded);
}
+static void stdout_post_select_btr(struct sched *s, struct task *t)
+{
+ struct stdout_task *sot = container_of(t, struct stdout_task, task);
+ ssize_t ret;
+ size_t sz = btr_get_input_queue_size(sot->btrn);
+ char *buf;
+
+ t->error = 0;
+ if (!sot->check_fd) {
+ if (sz == 0 && btr_no_parent(sot->btrn)) {
+ t->error = -E_STDOUT_EOF;
+ goto err;
+ }
+ return;
+ }
+ if (!FD_ISSET(STDOUT_FILENO, &s->wfds))
+ return;
+ sz = btr_next_buffer(sot->btrn, &buf);
+ if (sz == 0)
+ return;
+ ret = write_nonblock(STDOUT_FILENO, buf, sz, 0);
+ if (ret < 0) {
+ t->error = -ERRNO_TO_PARA_ERROR(errno);
+ goto err;
+ }
+ btr_consume(sot->btrn, ret);
+ return;
+err:
+ btr_remove_node(sot->btrn);
+}
/**
* Initialize a stdout task structure with default values.
*
{
int ret;
- sot->task.pre_select = stdout_pre_select;
- sot->task.post_select = stdout_post_select;
+ if (sot->btrn) {
+ sot->task.pre_select = stdout_pre_select_btr;
+ sot->task.post_select = stdout_post_select_btr;
+ } else {
+ sot->task.pre_select = stdout_pre_select;
+ sot->task.post_select = stdout_post_select;
+ }
sprintf(sot->task.status, "stdout writer");
ret = mark_fd_nonblocking(STDOUT_FILENO);
if (ret >= 0)