| | 1 | /* |
| | 2 | * SYS/MSGPORT.H |
| | 3 | * |
| | 4 | * Implements LWKT messages and ports. |
| | 5 | * |
| | 6 | * $DragonFly: src/sys/sys/msgport.h,v 1.1 2003/07/20 01:37:22 dillon Exp $ |
| | 7 | */ |
| | 8 | |
| | 9 | #ifndef _SYS_MSGPORT_H_ |
| | 10 | #define _SYS_MSGPORT_H_ |
| | 11 | |
| | 12 | #ifndef _SYS_QUEUE_H_ |
| | 13 | #include <sys/queue.h> /* TAILQ_* macros */ |
| | 14 | #endif |
| | 15 | |
| | 16 | struct lwkt_msg; |
| | 17 | struct lwkt_port; |
| | 18 | |
| | 19 | typedef struct lwkt_msg *lwkt_msg_t; |
| | 20 | typedef struct lwkt_port *lwkt_port_t; |
| | 21 | |
| | 22 | /* |
| | 23 | * The standard message and port structure for communications between |
| | 24 | * threads. See kern/lwkt_msgport.c for documentation on how messages and |
| | 25 | * ports work. |
| | 26 | */ |
| | 27 | typedef struct lwkt_msg { |
| | 28 | TAILQ_ENTRY(lwkt_msg) ms_node; /* link node (not always used) */ |
| | 29 | lwkt_port_t ms_target_port; /* only used in certain situations */ |
| | 30 | lwkt_port_t ms_reply_port; /* asynch replies returned here */ |
| | 31 | int ms_abortreq; /* set asynchronously */ |
| | 32 | int ms_cmd; |
| | 33 | int ms_flags; |
| | 34 | int ms_error; |
| | 35 | } lwkt_msg; |
| | 36 | |
| | 37 | #define MSGF_DONE 0x0001 /* asynch message is complete */ |
| | 38 | #define MSGF_REPLY 0x0002 /* asynch message has been returned */ |
| | 39 | #define MSGF_QUEUED 0x0004 /* message has been queued sanitychk */ |
| | 40 | #define MSGF_ASYNC 0x0008 /* sync/async hint */ |
| | 41 | |
| | 42 | typedef struct lwkt_port { |
| | 43 | lwkt_msg_queue mp_msgq; |
| | 44 | int mp_flags; |
| | 45 | thread_t mp_td; |
| | 46 | int (*mp_beginmsg)(lwkt_port_t port, lwkt_msg_t msg); |
| | 47 | void (*mp_abortmsg)(lwkt_port_t port, lwkt_msg_t msg); |
| | 48 | void (*mp_returnmsg)(lwkt_port_t port, lwkt_msg_t msg); |
| | 49 | } lwkt_port; |
| | 50 | |
| | 51 | #define MSGPORTF_WAITING 0x0001 |
| | 52 | |
| | 53 | #ifdef _KERNEL |
| | 54 | |
| | 55 | extern void lwkt_init_port(lwkt_port_t port, thread_t td); |
| | 56 | extern void lwkt_sendmsg(lwkt_port_t port, lwkt_msg_t msg); |
| | 57 | extern int lwkt_domsg(lwkt_port_t port, lwkt_msg_t msg); |
| | 58 | extern int lwkt_waitmsg(lwkt_msg_t msg); |
| | 59 | extern void lwkt_replyport(lwkt_port_t port, lwkt_msg_t msg); |
| | 60 | extern void lwkt_abortport(lwkt_port_t port, lwkt_msg_t msg); |
| | 61 | extern int lwkt_putport(lwkt_port_t port, lwkt_msg_t msg); |
| | 62 | extern void *lwkt_getport(lwkt_port_t port); |
| | 63 | extern void *lwkt_waitport(lwkt_port_t port); |
| | 64 | |
| | 65 | #endif |
| | 66 | |
| | 67 | #endif |
projects / dragonfly.git / blame_incremental