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Side by Side Diff: mojo/edk/system/awakable_list.cc

Issue 2725133002: Mojo: Armed Watchers (Closed)
Patch Set: . Created 3 years, 9 months ago
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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/awakable_list.h" 5 #include "mojo/edk/system/awakable_list.h"
6 6
7 #include <algorithm> 7 #include <algorithm>
8 8
9 #include "base/logging.h" 9 #include "base/logging.h"
10 #include "mojo/edk/system/awakable.h" 10 #include "mojo/edk/system/awakable.h"
(...skipping 21 matching lines...) Expand all
32 keep = it->awakable->Awake(MOJO_RESULT_FAILED_PRECONDITION, it->context); 32 keep = it->awakable->Awake(MOJO_RESULT_FAILED_PRECONDITION, it->context);
33 33
34 if (!keep) { 34 if (!keep) {
35 --last; 35 --last;
36 std::swap(*it, *last); 36 std::swap(*it, *last);
37 } else { 37 } else {
38 ++it; 38 ++it;
39 } 39 }
40 } 40 }
41 awakables_.erase(last, awakables_.end()); 41 awakables_.erase(last, awakables_.end());
42 watchers_.NotifyForStateChange(state);
43 } 42 }
44 43
45 void AwakableList::CancelAll() { 44 void AwakableList::CancelAll() {
46 for (AwakeInfoList::iterator it = awakables_.begin(); it != awakables_.end(); 45 for (AwakeInfoList::iterator it = awakables_.begin(); it != awakables_.end();
47 ++it) { 46 ++it) {
48 it->awakable->Awake(MOJO_RESULT_CANCELLED, it->context); 47 it->awakable->Awake(MOJO_RESULT_CANCELLED, it->context);
49 } 48 }
50 awakables_.clear(); 49 awakables_.clear();
51 watchers_.NotifyClosed();
52 } 50 }
53 51
54 void AwakableList::Add(Awakable* awakable, 52 void AwakableList::Add(Awakable* awakable,
55 MojoHandleSignals signals, 53 MojoHandleSignals signals,
56 uintptr_t context) { 54 uintptr_t context) {
57 awakables_.push_back(AwakeInfo(awakable, signals, context)); 55 awakables_.push_back(AwakeInfo(awakable, signals, context));
58 } 56 }
59 57
60 void AwakableList::Remove(Awakable* awakable) { 58 void AwakableList::Remove(Awakable* awakable) {
61 // We allow a thread to wait on the same handle multiple times simultaneously, 59 // We allow a thread to wait on the same handle multiple times simultaneously,
62 // so we need to scan the entire list and remove all occurrences of |waiter|. 60 // so we need to scan the entire list and remove all occurrences of |waiter|.
63 auto last = awakables_.end(); 61 auto last = awakables_.end();
64 for (AwakeInfoList::iterator it = awakables_.begin(); it != last;) { 62 for (AwakeInfoList::iterator it = awakables_.begin(); it != last;) {
65 if (it->awakable == awakable) { 63 if (it->awakable == awakable) {
66 --last; 64 --last;
67 std::swap(*it, *last); 65 std::swap(*it, *last);
68 } else { 66 } else {
69 ++it; 67 ++it;
70 } 68 }
71 } 69 }
72 awakables_.erase(last, awakables_.end()); 70 awakables_.erase(last, awakables_.end());
73 } 71 }
74 72
75 MojoResult AwakableList::AddWatcher(MojoHandleSignals signals,
76 const Watcher::WatchCallback& callback,
77 uintptr_t context,
78 const HandleSignalsState& current_state) {
79 return watchers_.Add(signals, callback, context, current_state);
80 }
81
82 MojoResult AwakableList::RemoveWatcher(uintptr_t context) {
83 return watchers_.Remove(context);
84 }
85
86 } // namespace edk 73 } // namespace edk
87 } // namespace mojo 74 } // namespace mojo
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