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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/system/waiter_list.h" | 5 #include "mojo/system/waiter_list.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "mojo/system/wait_flags_state.h" | 8 #include "mojo/system/wait_flags_state.h" |
| 9 #include "mojo/system/waiter.h" | 9 #include "mojo/system/waiter.h" |
| 10 | 10 |
| 11 namespace mojo { | 11 namespace mojo { |
| 12 namespace system { | 12 namespace system { |
| 13 | 13 |
| 14 WaiterList::WaiterList() { | 14 WaiterList::WaiterList() { |
| 15 } | 15 } |
| 16 | 16 |
| 17 WaiterList::~WaiterList() { | 17 WaiterList::~WaiterList() { |
| 18 DCHECK(waiters_.empty()); | 18 DCHECK(waiters_.empty()); |
| 19 } | 19 } |
| 20 | 20 |
| 21 void WaiterList::AwakeWaitersForStateChange(const WaitFlagsState& state) { | 21 void WaiterList::AwakeWaitersForStateChange(const WaitFlagsState& state) { |
| 22 for (WaiterInfoList::iterator it = waiters_.begin(); it != waiters_.end(); | 22 for (WaiterInfoList::iterator it = waiters_.begin(); it != waiters_.end(); |
| 23 ++it) { | 23 ++it) { |
| 24 if (state.satisfies(it->flags)) | 24 if (state.satisfies(it->signals)) |
| 25 it->waiter->Awake(MOJO_RESULT_OK, it->context); | 25 it->waiter->Awake(MOJO_RESULT_OK, it->context); |
| 26 else if (!state.can_satisfy(it->flags)) | 26 else if (!state.can_satisfy(it->signals)) |
| 27 it->waiter->Awake(MOJO_RESULT_FAILED_PRECONDITION, it->context); | 27 it->waiter->Awake(MOJO_RESULT_FAILED_PRECONDITION, it->context); |
| 28 } | 28 } |
| 29 } | 29 } |
| 30 | 30 |
| 31 void WaiterList::CancelAllWaiters() { | 31 void WaiterList::CancelAllWaiters() { |
| 32 for (WaiterInfoList::iterator it = waiters_.begin(); it != waiters_.end(); | 32 for (WaiterInfoList::iterator it = waiters_.begin(); it != waiters_.end(); |
| 33 ++it) { | 33 ++it) { |
| 34 it->waiter->Awake(MOJO_RESULT_CANCELLED, it->context); | 34 it->waiter->Awake(MOJO_RESULT_CANCELLED, it->context); |
| 35 } | 35 } |
| 36 waiters_.clear(); | 36 waiters_.clear(); |
| 37 } | 37 } |
| 38 | 38 |
| 39 void WaiterList::AddWaiter(Waiter* waiter, | 39 void WaiterList::AddWaiter(Waiter* waiter, |
| 40 MojoWaitFlags flags, | 40 MojoHandleSignals signals, |
| 41 uint32_t context) { | 41 uint32_t context) { |
| 42 waiters_.push_back(WaiterInfo(waiter, flags, context)); | 42 waiters_.push_back(WaiterInfo(waiter, signals, context)); |
| 43 } | 43 } |
| 44 | 44 |
| 45 void WaiterList::RemoveWaiter(Waiter* waiter) { | 45 void WaiterList::RemoveWaiter(Waiter* waiter) { |
| 46 // We allow a thread to wait on the same handle multiple times simultaneously, | 46 // We allow a thread to wait on the same handle multiple times simultaneously, |
| 47 // so we need to scan the entire list and remove all occurrences of |waiter|. | 47 // so we need to scan the entire list and remove all occurrences of |waiter|. |
| 48 for (WaiterInfoList::iterator it = waiters_.begin(); it != waiters_.end();) { | 48 for (WaiterInfoList::iterator it = waiters_.begin(); it != waiters_.end();) { |
| 49 WaiterInfoList::iterator maybe_delete = it; | 49 WaiterInfoList::iterator maybe_delete = it; |
| 50 ++it; | 50 ++it; |
| 51 if (maybe_delete->waiter == waiter) | 51 if (maybe_delete->waiter == waiter) |
| 52 waiters_.erase(maybe_delete); | 52 waiters_.erase(maybe_delete); |
| 53 } | 53 } |
| 54 } | 54 } |
| 55 | 55 |
| 56 } // namespace system | 56 } // namespace system |
| 57 } // namespace mojo | 57 } // namespace mojo |
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