added append_buffer_weak() which take the buffer directly instead of copying it

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.11-ssl-fixes@1324 152afb58-edef-0310-8abb-c4023f1b3aa9

src/chunk.c

@@ -194,6 +194,22 @@ int chunkqueue_append_buffer(chunkqueue *cq, buffer *mem) {
 	return 0;
 }
 
+int chunkqueue_append_buffer_weak(chunkqueue *cq, buffer *mem) {
+	chunk *c;
+	
+	if (mem->used == 0) return 0;
+	
+	c = chunkqueue_get_unused_chunk(cq);
+	c->type = MEM_CHUNK;
+	c->offset = 0;
+	if (c->mem) buffer_free(c->mem);
+	c->mem = mem;
+	
+	chunkqueue_append_chunk(cq, c);
+	
+	return 0;
+}
+
 int chunkqueue_prepend_buffer(chunkqueue *cq, buffer *mem) {
 	chunk *c;
 	
@@ -209,6 +225,7 @@ int chunkqueue_prepend_buffer(chunkqueue *cq, buffer *mem) {
 	return 0;
 }
 
+
 int chunkqueue_append_mem(chunkqueue *cq, const char * mem, size_t len) {
 	chunk *c;
 	

src/chunk.h

@@ -51,6 +51,7 @@ int chunkqueue_set_tempdirs(chunkqueue *c, array *tempdirs);
 int chunkqueue_append_file(chunkqueue *c, buffer *fn, off_t offset, off_t len);
 int chunkqueue_append_mem(chunkqueue *c, const char *mem, size_t len);
 int chunkqueue_append_buffer(chunkqueue *c, buffer *mem);
+int chunkqueue_append_buffer_weak(chunkqueue *c, buffer *mem);
 int chunkqueue_prepend_buffer(chunkqueue *c, buffer *mem);
 
 buffer * chunkqueue_get_append_buffer(chunkqueue *c);