1 /*
2 Open Tracker License
3
4 Terms and Conditions
5
6 Copyright (c) 1991-2000, Be Incorporated. All rights reserved.
7
8 Permission is hereby granted, free of charge, to any person obtaining a copy of
9 this software and associated documentation files (the "Software"), to deal in
10 the Software without restriction, including without limitation the rights to
11 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
12 of the Software, and to permit persons to whom the Software is furnished to do
13 so, subject to the following conditions:
14
15 The above copyright notice and this permission notice applies to all licensees
16 and shall be included in all copies or substantial portions of the Software.
17
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY,
20 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION
23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24
25 Except as contained in this notice, the name of Be Incorporated shall not be
26 used in advertising or otherwise to promote the sale, use or other dealings in
27 this Software without prior written authorization from Be Incorporated.
28
29 Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
30 of Be Incorporated in the United States and other countries. Other brand product
31 names are registered trademarks or trademarks of their respective holders.
32 All rights reserved.
33 */
34
35
36 #include "PendingNodeMonitorCache.h"
37 #include "PoseView.h"
38
39
40 const bigtime_t kDelayedNodeMonitorLifetime = 10000000;
41 // after this much the pending node monitor gets discarded as
42 // too old
43
44
PendingNodeMonitorEntry(const node_ref * node,const BMessage * nodeMonitor)45 PendingNodeMonitorEntry::PendingNodeMonitorEntry(const node_ref* node,
46 const BMessage* nodeMonitor)
47 :
48 fExpiresAfter(system_time() + kDelayedNodeMonitorLifetime),
49 fNodeMonitor(*nodeMonitor),
50 fNode(*node)
51 {
52 }
53
54
55 const BMessage*
NodeMonitor() const56 PendingNodeMonitorEntry::NodeMonitor() const
57 {
58 return &fNodeMonitor;
59 }
60
61
62 bool
Match(const node_ref * node) const63 PendingNodeMonitorEntry::Match(const node_ref* node) const
64 {
65 return fNode == *node;
66 }
67
68
69 bool
TooOld(bigtime_t now) const70 PendingNodeMonitorEntry::TooOld(bigtime_t now) const
71 {
72 return now > fExpiresAfter;
73 }
74
75
PendingNodeMonitorCache()76 PendingNodeMonitorCache::PendingNodeMonitorCache()
77 :
78 fList(10, true)
79 {
80 }
81
82
~PendingNodeMonitorCache()83 PendingNodeMonitorCache::~PendingNodeMonitorCache()
84 {
85 }
86
87
88 void
Add(const BMessage * message)89 PendingNodeMonitorCache::Add(const BMessage* message)
90 {
91 #if xDEBUG
92 PRINT(("adding pending node monitor\n"));
93 message->PrintToStream();
94 #endif
95 node_ref node;
96 if (message->FindInt32("device", &node.device) != B_OK
97 || message->FindInt64("node", (int64*)&node.node) != B_OK)
98 return;
99
100 fList.AddItem(new PendingNodeMonitorEntry(&node, message));
101 }
102
103
104 void
RemoveEntries(const node_ref * nodeRef)105 PendingNodeMonitorCache::RemoveEntries(const node_ref* nodeRef)
106 {
107 int32 count = fList.CountItems();
108 for (int32 index = count - 1; index >= 0; index--)
109 if (fList.ItemAt(index)->Match(nodeRef))
110 delete fList.RemoveItemAt(index);
111 }
112
113
114 void
RemoveOldEntries()115 PendingNodeMonitorCache::RemoveOldEntries()
116 {
117 bigtime_t now = system_time();
118 int32 count = fList.CountItems();
119 for (int32 index = count - 1; index >= 0; index--)
120 if (fList.ItemAt(index)->TooOld(now)) {
121 PRINT(("removing old entry from pending node monitor cache\n"));
122 delete fList.RemoveItemAt(index);
123 }
124 }
125
126
127 void
PoseCreatedOrMoved(BPoseView * poseView,const BPose * pose)128 PendingNodeMonitorCache::PoseCreatedOrMoved(BPoseView* poseView,
129 const BPose* pose)
130 {
131 bigtime_t now = system_time();
132 for (int32 index = 0; index < fList.CountItems();) {
133 PendingNodeMonitorEntry* item = fList.ItemAt(index);
134 if (item->TooOld(now)) {
135 PRINT(("removing old entry from pending node monitor cache\n"));
136 delete fList.RemoveItemAt(index);
137 } else if (item->Match(pose->TargetModel()->NodeRef())) {
138 fList.RemoveItemAt(index);
139 #if DEBUG
140 PRINT(("reapplying node monitor for model:\n"));
141 pose->TargetModel()->PrintToStream();
142 item->NodeMonitor()->PrintToStream();
143 bool result =
144 #endif
145 poseView->FSNotification(item->NodeMonitor());
146 ASSERT(result);
147 delete item;
148 } else
149 index++;
150 }
151 }
152