4 * Implements Inlines for LWKT messages and ports.
6 * $DragonFly: src/sys/sys/msgport2.h,v 1.10 2004/06/04 20:35:39 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.
26 * Note that other areas of the LWKT msg may already be initialized, so we
27 * do not zero the message here.
31 lwkt_initmsg(lwkt_msg_t msg, lwkt_port_t rport, int flags,
32 lwkt_cmd_t cmd, lwkt_cmd_t abort)
34 msg->ms_cmd = cmd; /* opaque */
35 if (flags & MSGF_ABORTABLE) /* constant optimized conditional */
36 msg->ms_abort = abort; /* opaque */
37 msg->ms_flags = MSGF_DONE | flags;
38 msg->ms_reply_port = rport;
43 * These inlines convert specific types to the lwkt_cmd_t type. The compiler
44 * should be able to optimize this whole mess out.
58 lwkt_cmd_func(int (*func)(lwkt_msg_t))
68 lwkt_initmsg_simple(lwkt_msg_t msg, int op)
70 lwkt_initmsg(msg, &curthread->td_msgport, 0,
71 lwkt_cmd_op(op), lwkt_cmd_op(0));
76 lwkt_reinitmsg(lwkt_msg_t msg, lwkt_port_t rport)
78 msg->ms_flags = (msg->ms_flags & (MSGF_ASYNC | MSGF_ABORTABLE)) | MSGF_DONE;
79 msg->ms_reply_port = rport;
84 lwkt_beginmsg(lwkt_port_t port, lwkt_msg_t msg)
86 return(port->mp_putport(port, msg));
91 lwkt_waitmsg(lwkt_msg_t msg)
93 lwkt_port_t port = msg->ms_reply_port;
94 return(((lwkt_msg_t)port->mp_waitport(port, msg))->ms_error);
99 lwkt_replymsg(lwkt_msg_t msg, int error)
103 msg->ms_error = error;
104 port = msg->ms_reply_port;
105 port->mp_replyport(port, msg);
110 lwkt_waitport(lwkt_port_t port, lwkt_msg_t msg)
112 return(port->mp_waitport(port, msg));
117 lwkt_checkmsg(lwkt_msg_t msg)
119 return(msg->ms_flags & MSGF_DONE);