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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "mojo/edk/system/data_pipe_producer_dispatcher.h" | 5 #include "mojo/edk/system/data_pipe_producer_dispatcher.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <utility> | 10 #include <utility> |
11 | 11 |
12 #include "base/bind.h" | 12 #include "base/bind.h" |
13 #include "base/logging.h" | 13 #include "base/logging.h" |
14 #include "base/memory/ref_counted.h" | 14 #include "base/memory/ref_counted.h" |
15 #include "base/message_loop/message_loop.h" | 15 #include "base/message_loop/message_loop.h" |
16 #include "mojo/edk/embedder/embedder_internal.h" | 16 #include "mojo/edk/embedder/embedder_internal.h" |
17 #include "mojo/edk/embedder/platform_shared_buffer.h" | 17 #include "mojo/edk/embedder/platform_shared_buffer.h" |
18 #include "mojo/edk/system/configuration.h" | 18 #include "mojo/edk/system/configuration.h" |
19 #include "mojo/edk/system/core.h" | 19 #include "mojo/edk/system/core.h" |
20 #include "mojo/edk/system/data_pipe_control_message.h" | 20 #include "mojo/edk/system/data_pipe_control_message.h" |
21 #include "mojo/edk/system/node_controller.h" | 21 #include "mojo/edk/system/node_controller.h" |
22 #include "mojo/edk/system/ports_message.h" | 22 #include "mojo/edk/system/ports_message.h" |
| 23 #include "mojo/edk/system/request_context.h" |
| 24 #include "mojo/public/c/system/data_pipe.h" |
23 | 25 |
24 namespace mojo { | 26 namespace mojo { |
25 namespace edk { | 27 namespace edk { |
26 | 28 |
27 namespace { | 29 namespace { |
28 | 30 |
29 struct SerializedState { | 31 struct SerializedState { |
30 MojoCreateDataPipeOptions options; | 32 MojoCreateDataPipeOptions options; |
31 uint64_t pipe_id; | 33 uint64_t pipe_id; |
32 bool peer_closed; | 34 bool peer_closed; |
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78 Dispatcher::Type DataPipeProducerDispatcher::GetType() const { | 80 Dispatcher::Type DataPipeProducerDispatcher::GetType() const { |
79 return Type::DATA_PIPE_PRODUCER; | 81 return Type::DATA_PIPE_PRODUCER; |
80 } | 82 } |
81 | 83 |
82 MojoResult DataPipeProducerDispatcher::Close() { | 84 MojoResult DataPipeProducerDispatcher::Close() { |
83 base::AutoLock lock(lock_); | 85 base::AutoLock lock(lock_); |
84 DVLOG(1) << "Closing data pipe producer " << pipe_id_; | 86 DVLOG(1) << "Closing data pipe producer " << pipe_id_; |
85 return CloseNoLock(); | 87 return CloseNoLock(); |
86 } | 88 } |
87 | 89 |
| 90 MojoResult DataPipeProducerDispatcher::Watch( |
| 91 MojoHandleSignals signals, |
| 92 const Watcher::WatchCallback& callback, |
| 93 uintptr_t context) { |
| 94 base::AutoLock lock(lock_); |
| 95 |
| 96 if (is_closed_ || in_transit_) |
| 97 return MOJO_RESULT_INVALID_ARGUMENT; |
| 98 |
| 99 return awakable_list_.AddWatcher( |
| 100 signals, callback, context, GetHandleSignalsStateNoLock()); |
| 101 } |
| 102 |
| 103 MojoResult DataPipeProducerDispatcher::CancelWatch(uintptr_t context) { |
| 104 base::AutoLock lock(lock_); |
| 105 |
| 106 if (is_closed_ || in_transit_) |
| 107 return MOJO_RESULT_INVALID_ARGUMENT; |
| 108 |
| 109 return awakable_list_.RemoveWatcher(context); |
| 110 } |
| 111 |
88 MojoResult DataPipeProducerDispatcher::WriteData(const void* elements, | 112 MojoResult DataPipeProducerDispatcher::WriteData(const void* elements, |
89 uint32_t* num_bytes, | 113 uint32_t* num_bytes, |
90 MojoWriteDataFlags flags) { | 114 MojoWriteDataFlags flags) { |
91 base::AutoLock lock(lock_); | 115 base::AutoLock lock(lock_); |
92 if (!shared_ring_buffer_ || in_transit_) | 116 if (!shared_ring_buffer_ || in_transit_) |
93 return MOJO_RESULT_INVALID_ARGUMENT; | 117 return MOJO_RESULT_INVALID_ARGUMENT; |
94 | 118 |
95 if (in_two_phase_write_) | 119 if (in_two_phase_write_) |
96 return MOJO_RESULT_BUSY; | 120 return MOJO_RESULT_BUSY; |
97 | 121 |
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445 // to ignore. | 469 // to ignore. |
446 if (transferred_) | 470 if (transferred_) |
447 return; | 471 return; |
448 | 472 |
449 DVLOG(1) << "Control port status changed for data pipe producer " << pipe_id_; | 473 DVLOG(1) << "Control port status changed for data pipe producer " << pipe_id_; |
450 | 474 |
451 UpdateSignalsStateNoLock(); | 475 UpdateSignalsStateNoLock(); |
452 } | 476 } |
453 | 477 |
454 void DataPipeProducerDispatcher::UpdateSignalsStateNoLock() { | 478 void DataPipeProducerDispatcher::UpdateSignalsStateNoLock() { |
| 479 RequestContext request_context; |
| 480 |
455 lock_.AssertAcquired(); | 481 lock_.AssertAcquired(); |
456 | 482 |
457 bool was_peer_closed = peer_closed_; | 483 bool was_peer_closed = peer_closed_; |
458 size_t previous_capacity = available_capacity_; | 484 size_t previous_capacity = available_capacity_; |
459 | 485 |
460 ports::PortStatus port_status; | 486 ports::PortStatus port_status; |
461 if (node_controller_->node()->GetStatus(control_port_, &port_status) != | 487 if (node_controller_->node()->GetStatus(control_port_, &port_status) != |
462 ports::OK || | 488 ports::OK || |
463 !port_status.receiving_messages) { | 489 !port_status.receiving_messages) { |
464 DVLOG(1) << "Data pipe producer " << pipe_id_ << " is aware of peer closure" | 490 DVLOG(1) << "Data pipe producer " << pipe_id_ << " is aware of peer closure" |
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502 } | 528 } |
503 | 529 |
504 if (peer_closed_ != was_peer_closed || | 530 if (peer_closed_ != was_peer_closed || |
505 available_capacity_ != previous_capacity) { | 531 available_capacity_ != previous_capacity) { |
506 awakable_list_.AwakeForStateChange(GetHandleSignalsStateNoLock()); | 532 awakable_list_.AwakeForStateChange(GetHandleSignalsStateNoLock()); |
507 } | 533 } |
508 } | 534 } |
509 | 535 |
510 } // namespace edk | 536 } // namespace edk |
511 } // namespace mojo | 537 } // namespace mojo |
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