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Introducing application and port shared memory queues.

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The goal is to minimize the number of syscalls needed to deliver a message.
This commit is contained in:
Max Romanov
2020-08-11 19:20:34 +03:00
parent a82cf4ffb6
commit e227fc9e62
11 changed files with 1802 additions and 320 deletions
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28
src/nxt_port.c
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@@ -8,6 +8,7 @@
#include <nxt_runtime.h>
#include <nxt_port.h>
#include <nxt_router.h>
#include <nxt_port_queue.h>
static void nxt_port_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg);
@@ -68,6 +69,8 @@ nxt_port_new(nxt_task_t *task, nxt_port_id_t id, nxt_pid_t pid,
nxt_queue_init(&port->messages);
nxt_thread_mutex_create(&port->write_mutex);
port->queue_fd = -1;
} else {
nxt_mp_destroy(mp);
}
@@ -99,6 +102,16 @@ nxt_port_close(nxt_task_t *task, nxt_port_t *port)
nxt_router_app_port_close(task, port);
}
}
if (port->queue_fd != -1) {
nxt_fd_close(port->queue_fd);
port->queue_fd = -1;
}
if (port->queue != NULL) {
nxt_mem_munmap(port->queue, sizeof(nxt_port_queue_t));
port->queue = NULL;
}
}
@@ -176,6 +189,7 @@ nxt_port_quit_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
}
/* TODO join with process_ready and move to nxt_main_process.c */
nxt_inline void
nxt_port_send_new_port(nxt_task_t *task, nxt_runtime_t *rt,
nxt_port_t *new_port, uint32_t stream)
@@ -227,8 +241,9 @@ nxt_port_send_port(nxt_task_t *task, nxt_port_t *port, nxt_port_t *new_port,
msg->max_share = port->max_share;
msg->type = new_port->type;
return nxt_port_socket_write(task, port, NXT_PORT_MSG_NEW_PORT,
new_port->pair[1], stream, 0, b);
return nxt_port_socket_write2(task, port, NXT_PORT_MSG_NEW_PORT,
new_port->pair[1], new_port->queue_fd,
stream, 0, b);
}
@@ -279,7 +294,7 @@ nxt_port_new_port_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
msg->u.new_port = port;
}
/* TODO move to nxt_main_process.c */
void
nxt_port_process_ready_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
{
@@ -304,6 +319,13 @@ nxt_port_process_ready_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
nxt_debug(task, "process %PI ready", msg->port_msg.pid);
if (msg->fd != -1) {
port->queue_fd = msg->fd;
port->queue = nxt_mem_mmap(NULL, sizeof(nxt_port_queue_t),
PROT_READ | PROT_WRITE, MAP_SHARED, msg->fd,
0);
}
nxt_port_send_new_port(task, rt, port, msg->port_msg.stream);
}