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Implicit port read buffer completion.

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To disable implicit completion, handler should reset msg->buf field.
This commit is contained in:
Max Romanov
2017-08-02 13:21:32 +03:00
parent bcf99f87e2
commit 9367dd2bf8
4 changed files with 24 additions and 21 deletions
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27
src/nxt_port_socket.c
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@@ -415,7 +415,11 @@ nxt_port_read_handler(nxt_task_t *task, void *obj, void *data)
nxt_port_read_msg_process(task, port, &msg);
if (b->mem.pos == b->mem.free) {
/*
* To disable instant completion or buffer re-usage,
* handler should reset 'msg.buf'.
*/
if (msg.buf == b) {
nxt_port_buf_free(port, b);
}
@@ -469,14 +473,23 @@ nxt_port_read_msg_process(nxt_task_t *task, nxt_port_t *port,
port->handler(task, msg);
if (msg->port_msg.mmap && orig_b != b) {
/* complete used mmap buffers */
for (; b && nxt_buf_used_size(b) == 0;
b = b->next) {
nxt_debug(task, "complete buffer %p", b);
nxt_work_queue_add(port->socket.read_work_queue,
b->completion_handler, task, b, b->parent);
/*
* To disable instant buffer completion,
* handler should reset 'msg->buf'.
*/
if (msg->buf == b) {
/* complete mmap buffers */
for (; b != NULL; b = b->next) {
nxt_debug(task, "complete buffer %p", b);
nxt_work_queue_add(port->socket.read_work_queue,
b->completion_handler, task, b, b->parent);
}
}
/* restore original buf */
msg->buf = orig_b;
}
return;