4 * Implements Inlines for LWKT messages and ports.
6 * $DragonFly: src/sys/sys/msgport2.h,v 1.9 2004/04/20 01:52:24 dillon Exp $
9 #ifndef _SYS_MSGPORT2_H_
10 #define _SYS_MSGPORT2_H_
12 #ifndef _SYS_THREAD2_H_
13 #include <sys/thread2.h>
16 #define lwkt_cmd_op_none lwkt_cmd_op(0)
18 typedef int (*lwkt_cmd_func_t)(lwkt_msg_t);
21 * Initialize a LWKT message structure. Note that if the message supports
22 * an abort MSGF_ABORTABLE must be passed in flags and an abort command
23 * supplied. If abort is not supported then lwkt_cmd_op_none is passed as
24 * the abort command argument by convention.
28 lwkt_initmsg(lwkt_msg_t msg, lwkt_port_t rport, int flags,
29 lwkt_cmd_t cmd, lwkt_cmd_t abort)
31 msg->ms_cmd = cmd; /* opaque */
32 if (flags & MSGF_ABORTABLE) /* constant optimized conditional */
33 msg->ms_abort = abort; /* opaque */
34 msg->ms_flags = MSGF_DONE | flags;
35 msg->ms_reply_port = rport;
40 * These inlines convert specific types to the lwkt_cmd_t type. The compiler
41 * should be able to optimize this whole mess out.
55 lwkt_cmd_func(int (*func)(lwkt_msg_t))
65 lwkt_initmsg_simple(lwkt_msg_t msg, int op)
67 lwkt_initmsg(msg, &curthread->td_msgport, 0,
68 lwkt_cmd_op(op), lwkt_cmd_op(0));
73 lwkt_reinitmsg(lwkt_msg_t msg, lwkt_port_t rport)
75 msg->ms_flags = (msg->ms_flags & (MSGF_ASYNC | MSGF_ABORTABLE)) | MSGF_DONE;
76 msg->ms_reply_port = rport;
81 lwkt_beginmsg(lwkt_port_t port, lwkt_msg_t msg)
83 return(port->mp_putport(port, msg));
88 lwkt_waitmsg(lwkt_msg_t msg)
90 lwkt_port_t port = msg->ms_reply_port;
91 return(((lwkt_msg_t)port->mp_waitport(port, msg))->ms_error);
96 lwkt_replymsg(lwkt_msg_t msg, int error)
100 msg->ms_error = error;
101 port = msg->ms_reply_port;
102 port->mp_replyport(port, msg);
107 lwkt_waitport(lwkt_port_t port, lwkt_msg_t msg)
109 return(port->mp_waitport(port, msg));