From: Andre Noll <maan@systemlinux.org>
Date: Mon, 28 Dec 2009 21:51:59 +0000 (+0100)
Subject: http_recv: Add buffer tree support.
X-Git-Tag: v0.4.2~249
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=8bb9f71c3b9e8e6d3087f186addbb966bcd1f946

http_recv: Add buffer tree support.
---

diff --git a/http_recv.c b/http_recv.c
index 13e9ede2..b1d3f5f3 100644
--- a/http_recv.c
+++ b/http_recv.c
@@ -21,6 +21,7 @@
 #include "net.h"
 #include "string.h"
 #include "fd.h"
+#include "buffer_tree.h"
 
 /** the output buffer size of the http receiver */
 #define BUFSIZE (32 * 1024)
@@ -96,11 +97,14 @@ static void http_recv_pre_select(struct sched *s, struct task *t)
 		para_fd_set(phd->fd, &s->rfds, &s->max_fileno);
 }
 
+#define HTTP_RECV_MAX_PENDING (1024 * 1024)
+#define HTTP_RECV_READ_BUF_SIZE 4096
 
 static void http_recv_post_select(struct sched *s, struct task *t)
 {
 	struct receiver_node *rn = container_of(t, struct receiver_node, task);
 	struct private_http_recv_data *phd = rn->private_data;
+	struct http_recv_args_info *conf = rn->conf;
 
 	if (rn->output_error && *rn->output_error < 0) {
 		t->error = *rn->output_error;
@@ -128,17 +132,29 @@ static void http_recv_post_select(struct sched *s, struct task *t)
 		}
 		return;
 	}
-	if (rn->loaded >= BUFSIZE) {
-		t->error = -E_HTTP_RECV_OVERRUN;
+	if (conf->buffer_tree_given) {
+		char *buf;
+		if (btr_bytes_pending(rn->btr_root) > HTTP_RECV_MAX_PENDING) {
+			t->error = -E_HTTP_RECV_OVERRUN;
+			return;
+		}
+		buf = para_malloc(HTTP_RECV_READ_BUF_SIZE);
+		t->error = recv_bin_buffer(phd->fd, buf, HTTP_RECV_READ_BUF_SIZE);
+		if (t->error == 0)
+			t->error = -E_RECV_EOF;
+		if (t->error < 0) {
+			free(buf);
+			return;
+		}
+		btr_add_output(buf, t->error, rn->btr_root);
 		return;
 	}
+	t->error = -E_HTTP_RECV_OVERRUN;
+	if (rn->loaded >= BUFSIZE)
+		return;
 	t->error = recv_bin_buffer(phd->fd, rn->buf + rn->loaded,
 		BUFSIZE - rn->loaded);
-	if (t->error > 0) {
-		rn->loaded += t->error;
-		return;
-	}
-	if (!t->error)
+	if (t->error == 0)
 		t->error = -E_RECV_EOF;
 }