| 68,6 → 68,37 |
|---|
| /* Well known phone descriptors */ |
| #define PHONE_NS 0 |
| |
| /* 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: |
| * - 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 |
| * - passes call to userspace. If userspace |
| * 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 caller obtains taskid of the called thread |
| */ |
| #define IPC_M_CONNECTTOME 1 |
| #define IPC_M_CONNECTMETO 2 |
| |
| |
| /* Well-known methods */ |
| #define IPC_M_FIRST_USER 512 |
| #define IPC_M_PING 512 |
| /* User methods */ |
| #define FIRST_USER_METHOD 1024 |
| |
| #ifdef KERNEL |
| |
| #include <synch/mutex.h> |
| 76,8 → 107,8 |
|---|
| |
| #define IPC_MAX_PHONES 16 |
| |
| |
| typedef struct answerbox answerbox_t; |
| typedef __native ipc_data_t[IPC_CALL_LEN]; |
| |
| typedef struct { |
| link_t list; |
| 84,12 → 115,14 |
|---|
| answerbox_t *callerbox; |
| int flags; |
| task_t *sender; |
| __native data[IPC_CALL_LEN]; |
| ipc_data_t data; |
| } call_t; |
| |
| struct answerbox { |
| SPINLOCK_DECLARE(lock); |
| |
| task_t *task; |
| |
| mutex_t mutex; |
| condvar_t cv; |
| |