| 71,13 → 71,12 |
|---|
| /* System-specific methods - only through special syscalls |
| * These methods have special behaviour |
| */ |
| #define IPC_M_IAMCONNECTING 0 |
| /** Protocol for CONNECT - TO - ME |
| * |
| * Calling process asks the callee to create a callback connection, |
| * so that it can start initiating new messages. |
| * |
| * The protocol for negotiating is as follows: |
| * The protocol for negotiating is: |
| * - sys_connecttome - sends a message IPC_M_CONNECTTOME |
| * - sys_wait_for_call - upon receipt tries to allocate new phone |
| * - if it fails, responds with ELIMIT |
| 85,16 → 84,34 |
|---|
| * responds with error, phone is deallocated and |
| * error is sent back to caller. Otherwise |
| * the call is accepted and the response is sent back. |
| * - the allocated phoneid is passed to userspace as |
| * ARG3 of the call. |
| * - the allocated phoneid is passed to userspace |
| * (on the receiving sid) as ARG3 of the call. |
| * - the caller obtains taskid of the called thread |
| */ |
| #define IPC_M_CONNECTTOME 1 |
| /** Protocol for CONNECT - ME - TO |
| * |
| * Calling process asks the callee to create for him a new connection. |
| * E.g. the caller wants a name server to connect him to print server. |
| * |
| * The protocol for negotiating is: |
| * - sys_connect_me_to - send a synchronous message to name server |
| * indicating that it wants to be connected to some |
| * service |
| * recepient - if ipc_answer == 0, then accept connection |
| * - otherwise connection refused |
| * - recepient may forward message. Forwarding |
| * system message |
| * |
| */ |
| #define IPC_M_CONNECTMETO 2 |
| /* Control messages that the server sends to the processes |
| * about their connections. |
| */ |
| |
| |
| /* Well-known methods */ |
| #define IPC_M_FIRST_USER 512 |
| #define IPC_M_LAST_SYSTEM 511 |
| #define IPC_M_PING 512 |
| /* User methods */ |
| #define FIRST_USER_METHOD 1024 |
| 123,8 → 140,7 |
|---|
| |
| task_t *task; |
| |
| mutex_t mutex; |
| condvar_t cv; |
| waitq_t wq; |
| |
| link_t connected_phones; /**< Phones connected to this answerbox */ |
| link_t calls; /**< Received calls */ |
| 137,6 → 153,7 |
|---|
| SPINLOCK_DECLARE(lock); |
| link_t list; |
| answerbox_t *callee; |
| int busy; |
| } phone_t; |
| |
| extern void ipc_init(void); |
| 145,12 → 162,13 |
|---|
| extern void ipc_call(phone_t *phone, call_t *request); |
| extern void ipc_call_sync(phone_t *phone, call_t *request); |
| extern void ipc_phone_destroy(phone_t *phone); |
| extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
| extern void ipc_phone_init(phone_t *phone); |
| extern void ipc_phone_connect(phone_t *phone, answerbox_t *box); |
| extern void ipc_call_free(call_t *call); |
| extern call_t * ipc_call_alloc(void); |
| extern void ipc_answerbox_init(answerbox_t *box); |
| extern void ipc_phone_init(phone_t *phone, answerbox_t *box); |
| extern void ipc_call_init(call_t *call); |
| extern void ipc_forward(call_t *call, answerbox_t *newbox,answerbox_t *oldbox); |
| |
| extern answerbox_t *ipc_phone_0; |
| |