Changeset 3b3e776 in mainline for kernel/generic/src/ipc
- Timestamp:
- 2010-02-05T10:57:50Z (16 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- 0358da0
- Parents:
- 3f085132 (diff), b4cbef1 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the(diff)links above to see all the changes relative to each parent. - Location:
- kernel/generic/src/ipc
- Files:
-
- 3 edited
Legend:
- Unmodified
- Added
- Removed
-
kernel/generic/src/ipc/ipc.c
r3f085132 r3b3e776 62 62 63 63 static slab_cache_t *ipc_call_slab; 64 static slab_cache_t *ipc_answerbox_slab; 64 65 65 66 /** Initialize a call structure. … … 96 97 } 97 98 98 /** Initialize a statically allocated call structure.99 *100 * @param call Statically allocated kernel call structure to be101 * initialized.102 */103 void ipc_call_static_init(call_t *call)104 {105 _ipc_call_init(call);106 call->flags |= IPC_CALL_STATIC_ALLOC;107 }108 109 99 /** Deallocate a call structure. 110 100 * … … 113 103 void ipc_call_free(call_t *call) 114 104 { 115 ASSERT(!(call->flags & IPC_CALL_STATIC_ALLOC));116 105 /* Check to see if we have data in the IPC_M_DATA_SEND buffer. */ 117 106 if (call->buffer) … … 130 119 spinlock_initialize(&box->irq_lock, "ipc_box_irqlock"); 131 120 waitq_initialize(&box->wq); 121 link_initialize(&box->sync_box_link); 132 122 list_initialize(&box->connected_phones); 133 123 list_initialize(&box->calls); … … 179 169 int ipc_call_sync(phone_t *phone, call_t *request) 180 170 { 181 answerbox_t sync_box; 182 183 ipc_answerbox_init(&sync_box, TASK); 171 answerbox_t *sync_box; 172 ipl_t ipl; 173 174 sync_box = slab_alloc(ipc_answerbox_slab, 0); 175 ipc_answerbox_init(sync_box, TASK); 176 177 /* 178 * Put the answerbox on the TASK's list of synchronous answerboxes so 179 * that it can be cleaned up if the call is interrupted. 180 */ 181 ipl = interrupts_disable(); 182 spinlock_lock(&TASK->lock); 183 list_append(&sync_box->sync_box_link, &TASK->sync_box_head); 184 spinlock_unlock(&TASK->lock); 185 interrupts_restore(ipl); 184 186 185 187 /* We will receive data in a special box. */ 186 request->callerbox = &sync_box;188 request->callerbox = sync_box; 187 189 188 190 ipc_call(phone, request); 189 if (!ipc_wait_for_call(&sync_box, SYNCH_NO_TIMEOUT, 190 SYNCH_FLAGS_INTERRUPTIBLE)) 191 if (!ipc_wait_for_call(sync_box, SYNCH_NO_TIMEOUT, 192 SYNCH_FLAGS_INTERRUPTIBLE)) { 193 /* The answerbox and the call will be freed by ipc_cleanup(). */ 191 194 return EINTR; 195 } 196 197 /* 198 * The answer arrived without interruption so we can remove the 199 * answerbox from the TASK's list of synchronous answerboxes. 200 */ 201 (void) interrupts_disable(); 202 spinlock_lock(&TASK->lock); 203 list_remove(&sync_box->sync_box_link); 204 spinlock_unlock(&TASK->lock); 205 interrupts_restore(ipl); 206 207 slab_free(ipc_answerbox_slab, sync_box); 192 208 return EOK; 193 209 } … … 196 212 * 197 213 * @param call Call structure to be answered. 198 */ 199 static void _ipc_answer_free_call(call_t *call) 214 * @param selflocked If true, then TASK->answebox is locked. 215 */ 216 static void _ipc_answer_free_call(call_t *call, bool selflocked) 200 217 { 201 218 answerbox_t *callerbox = call->callerbox; 219 bool do_lock = ((!selflocked) || callerbox != (&TASK->answerbox)); 202 220 203 221 call->flags |= IPC_CALL_ANSWERED; … … 210 228 } 211 229 212 spinlock_lock(&callerbox->lock); 230 if (do_lock) 231 spinlock_lock(&callerbox->lock); 213 232 list_append(&call->link, &callerbox->answers); 214 spinlock_unlock(&callerbox->lock); 233 if (do_lock) 234 spinlock_unlock(&callerbox->lock); 215 235 waitq_wakeup(&callerbox->wq, WAKEUP_FIRST); 216 236 } … … 228 248 spinlock_unlock(&box->lock); 229 249 /* Send back answer */ 230 _ipc_answer_free_call(call );250 _ipc_answer_free_call(call, false); 231 251 } 232 252 … … 245 265 atomic_inc(&phone->active_calls); 246 266 IPC_SET_RETVAL(call->data, err); 247 _ipc_answer_free_call(call );267 _ipc_answer_free_call(call, false); 248 268 } 249 269 … … 284 304 if (call->flags & IPC_CALL_FORWARDED) { 285 305 IPC_SET_RETVAL(call->data, EFORWARD); 286 _ipc_answer_free_call(call );306 _ipc_answer_free_call(call, false); 287 307 } else { 288 308 if (phone->state == IPC_PHONE_HUNGUP) … … 439 459 440 460 IPC_SET_RETVAL(call->data, EHANGUP); 441 _ipc_answer_free_call(call );461 _ipc_answer_free_call(call, true); 442 462 } 443 463 } … … 520 540 int i; 521 541 call_t *call; 542 ipl_t ipl; 522 543 523 544 /* Disconnect all our phones ('ipc_phone_hangup') */ … … 545 566 spinlock_unlock(&TASK->answerbox.lock); 546 567 547 /* Wait for all async answers to arrive */ 568 /* Wait for all answers to interrupted synchronous calls to arrive */ 569 ipl = interrupts_disable(); 570 while (!list_empty(&TASK->sync_box_head)) { 571 answerbox_t *box = list_get_instance(TASK->sync_box_head.next, 572 answerbox_t, sync_box_link); 573 574 list_remove(&box->sync_box_link); 575 call = ipc_wait_for_call(box, SYNCH_NO_TIMEOUT, 576 SYNCH_FLAGS_NONE); 577 ipc_call_free(call); 578 slab_free(ipc_answerbox_slab, box); 579 } 580 interrupts_restore(ipl); 581 582 /* Wait for all answers to asynchronous calls to arrive */ 548 583 while (1) { 549 584 /* Go through all phones, until all are FREE... */ … … 552 587 for (i = 0; i < IPC_MAX_PHONES; i++) { 553 588 if (TASK->phones[i].state == IPC_PHONE_HUNGUP && 554 atomic_get(&TASK->phones[i].active_calls) == 0) 589 atomic_get(&TASK->phones[i].active_calls) == 0) { 555 590 TASK->phones[i].state = IPC_PHONE_FREE; 591 TASK->phones[i].callee = NULL; 592 } 556 593 557 594 /* Just for sure, we might have had some … … 574 611 ASSERT((call->flags & IPC_CALL_ANSWERED) || 575 612 (call->flags & IPC_CALL_NOTIF)); 576 ASSERT(!(call->flags & IPC_CALL_STATIC_ALLOC));577 613 578 614 /* … … 593 629 ipc_call_slab = slab_cache_create("ipc_call", sizeof(call_t), 0, NULL, 594 630 NULL, 0); 631 ipc_answerbox_slab = slab_cache_create("ipc_answerbox", 632 sizeof(answerbox_t), 0, NULL, NULL, 0); 595 633 } 596 634 -
kernel/generic/src/ipc/irq.c
r3f085132 r3b3e776 423 423 case CMD_ACCEPT: 424 424 return IRQ_ACCEPT; 425 break;426 425 case CMD_DECLINE: 427 426 default: -
kernel/generic/src/ipc/sysipc.c
r3f085132 r3b3e776 61 61 { \ 62 62 if (phoneid > IPC_MAX_PHONES) { \ 63 err ;\63 err \ 64 64 } \ 65 65 phone = &TASK->phones[phoneid]; \ … … 122 122 case IPC_M_DATA_READ: 123 123 return 1; 124 break;125 124 default: 126 125 return 0; … … 376 375 phone_t *cloned_phone; 377 376 GET_CHECK_PHONE(cloned_phone, IPC_GET_ARG1(call->data), 378 return ENOENT );377 return ENOENT;); 379 378 phones_lock(cloned_phone, phone); 380 379 if ((cloned_phone->state != IPC_PHONE_CONNECTED) || … … 531 530 unative_t arg1, unative_t arg2, unative_t arg3, ipc_data_t *data) 532 531 { 533 call_t call;532 call_t *call; 534 533 phone_t *phone; 535 534 int res; 536 535 int rc; 537 536 538 GET_CHECK_PHONE(phone, phoneid, return ENOENT );539 540 ipc_call_static_init(&call);541 IPC_SET_METHOD(call .data, method);542 IPC_SET_ARG1(call .data, arg1);543 IPC_SET_ARG2(call .data, arg2);544 IPC_SET_ARG3(call .data, arg3);537 GET_CHECK_PHONE(phone, phoneid, return ENOENT;); 538 539 call = ipc_call_alloc(0); 540 IPC_SET_METHOD(call->data, method); 541 IPC_SET_ARG1(call->data, arg1); 542 IPC_SET_ARG2(call->data, arg2); 543 IPC_SET_ARG3(call->data, arg3); 545 544 /* 546 545 * To achieve deterministic behavior, zero out arguments that are beyond 547 546 * the limits of the fast version. 548 547 */ 549 IPC_SET_ARG4(call .data, 0);550 IPC_SET_ARG5(call .data, 0);551 552 if (!(res = request_preprocess( &call, phone))) {548 IPC_SET_ARG4(call->data, 0); 549 IPC_SET_ARG5(call->data, 0); 550 551 if (!(res = request_preprocess(call, phone))) { 553 552 #ifdef CONFIG_UDEBUG 554 553 udebug_stoppable_begin(); 555 554 #endif 556 rc = ipc_call_sync(phone, &call);555 rc = ipc_call_sync(phone, call); 557 556 #ifdef CONFIG_UDEBUG 558 557 udebug_stoppable_end(); 559 558 #endif 560 if (rc != EOK) 559 if (rc != EOK) { 560 /* The call will be freed by ipc_cleanup(). */ 561 561 return rc; 562 process_answer(&call); 562 } 563 process_answer(call); 563 564 564 565 } else { 565 IPC_SET_RETVAL(call.data, res); 566 } 567 rc = STRUCT_TO_USPACE(&data->args, &call.data.args); 566 IPC_SET_RETVAL(call->data, res); 567 } 568 rc = STRUCT_TO_USPACE(&data->args, &call->data.args); 569 ipc_call_free(call); 568 570 if (rc != 0) 569 571 return rc; … … 584 586 ipc_data_t *reply) 585 587 { 586 call_t call;588 call_t *call; 587 589 phone_t *phone; 588 590 int res; 589 591 int rc; 590 592 591 ipc_call_static_init(&call); 592 rc = copy_from_uspace(&call.data.args, &question->args, 593 sizeof(call.data.args)); 594 if (rc != 0) 593 GET_CHECK_PHONE(phone, phoneid, return ENOENT;); 594 595 call = ipc_call_alloc(0); 596 rc = copy_from_uspace(&call->data.args, &question->args, 597 sizeof(call->data.args)); 598 if (rc != 0) { 599 ipc_call_free(call); 595 600 return (unative_t) rc; 596 597 GET_CHECK_PHONE(phone, phoneid, return ENOENT); 598 599 if (!(res = request_preprocess( &call, phone))) {601 } 602 603 604 if (!(res = request_preprocess(call, phone))) { 600 605 #ifdef CONFIG_UDEBUG 601 606 udebug_stoppable_begin(); 602 607 #endif 603 rc = ipc_call_sync(phone, &call);608 rc = ipc_call_sync(phone, call); 604 609 #ifdef CONFIG_UDEBUG 605 610 udebug_stoppable_end(); 606 611 #endif 607 if (rc != EOK) 612 if (rc != EOK) { 613 /* The call will be freed by ipc_cleanup(). */ 608 614 return rc; 609 process_answer(&call); 615 } 616 process_answer(call); 610 617 } else 611 IPC_SET_RETVAL(call.data, res); 612 613 rc = STRUCT_TO_USPACE(&reply->args, &call.data.args); 618 IPC_SET_RETVAL(call->data, res); 619 620 rc = STRUCT_TO_USPACE(&reply->args, &call->data.args); 621 ipc_call_free(call); 614 622 if (rc != 0) 615 623 return rc; … … 658 666 return IPC_CALLRET_TEMPORARY; 659 667 660 GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL );668 GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL;); 661 669 662 670 call = ipc_call_alloc(0); … … 697 705 return IPC_CALLRET_TEMPORARY; 698 706 699 GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL );707 GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL;); 700 708 701 709 call = ipc_call_alloc(0); … … 747 755 call->flags |= IPC_CALL_FORWARDED; 748 756 749 GET_CHECK_PHONE(phone, phoneid, { 757 GET_CHECK_PHONE(phone, phoneid, { 750 758 IPC_SET_RETVAL(call->data, EFORWARD); 751 759 ipc_answer(&TASK->answerbox, call); … … 952 960 phone_t *phone; 953 961 954 GET_CHECK_PHONE(phone, phoneid, return ENOENT );962 GET_CHECK_PHONE(phone, phoneid, return ENOENT;); 955 963 956 964 if (ipc_phone_hangup(phone)) … … 991 999 992 1000 if (call->flags & IPC_CALL_NOTIF) { 993 ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));994 995 1001 /* Set in_phone_hash to the interrupt counter */ 996 1002 call->data.phone = (void *) call->priv; … … 1005 1011 if (call->flags & IPC_CALL_ANSWERED) { 1006 1012 process_answer(call); 1007 1008 ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));1009 1013 1010 1014 if (call->flags & IPC_CALL_DISCARD_ANSWER) {
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