X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=stdout.c;h=16e16465ad2d9671c6d9e818f10caed6aae2cb91;hp=d64586bccd9cdd12ffe743247680d8686ee1c002;hb=3010ef96e10cb15d423eef8f9802fbed78744393;hpb=05527588bd503e4748d801b641a9e3a6556525ad

diff --git a/stdout.c b/stdout.c
index d64586bc..16e16465 100644
--- a/stdout.c
+++ b/stdout.c
@@ -8,6 +8,7 @@
 
 #include <dirent.h> /* readdir() */
 #include <assert.h>
+#include <stdbool.h>
 
 #include "para.h"
 #include "list.h"
@@ -15,6 +16,7 @@
 #include "fd.h"
 #include "error.h"
 #include "stdout.h"
+#include "buffer_tree.h"
 
 /**
  * The pre_select function of the stdout task.
@@ -43,6 +45,22 @@ static void stdout_pre_select(struct sched *s, struct task *t)
 	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);
+	int ret;
+
+	t->error = 0;
+	sot->check_fd = 0;
+	ret = btr_node_status(sot->btrn, 0, BTR_NT_LEAF);
+	if (ret > 0)
+		para_fd_set(STDOUT_FILENO, &s->wfds, &s->max_fileno);
+	else if (ret < 0) {
+		s->timeout.tv_sec = 0;
+		s->timeout.tv_usec = 1;
+	}
+}
+
 /**
  * The post select function of the stdout task.
  *
@@ -77,6 +95,33 @@ static void stdout_post_select(struct sched *s, struct task *t)
 		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);
+	struct btr_node *btrn = sot->btrn;
+	int ret;
+	char *buf;
+	size_t sz;
+
+	t->error = 0;
+	ret = btr_node_status(btrn, 0, BTR_NT_LEAF);
+	if (ret < 0)
+		goto err;
+	if (ret == 0)
+		return;
+	if (!FD_ISSET(STDOUT_FILENO, &s->wfds))
+		return;
+	sz = btr_next_buffer(btrn, &buf);
+	assert(sz > 0);
+	ret = write_nonblock(STDOUT_FILENO, buf, sz, 0);
+	if (ret < 0)
+		goto err;
+	btr_consume(btrn, ret);
+	return;
+err:
+	btr_remove_node(btrn);
+	t->error = ret;
+}
 /**
  * Initialize a stdout task structure with default values.
  *
@@ -89,8 +134,13 @@ void stdout_set_defaults(struct stdout_task *sot)
 {
 	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)