src/kits/tracker/PendingNodeMonitorCache.cpp

   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
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  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,
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  23 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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  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
  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*
  56 PendingNodeMonitorEntry::NodeMonitor() const
  57 {
  58         return &fNodeMonitor;
  59 }
  60
  61
  62 bool
  63 PendingNodeMonitorEntry::Match(const node_ref* node) const
  64 {
  65         return fNode == *node;
  66 }
  67
  68
  69 bool
  70 PendingNodeMonitorEntry::TooOld(bigtime_t now) const
  71 {
  72         return now > fExpiresAfter;
  73 }
  74
  75
  76 PendingNodeMonitorCache::PendingNodeMonitorCache()
  77         :
  78         fList(10, true)
  79 {
  80 }
  81
  82
  83 PendingNodeMonitorCache::~PendingNodeMonitorCache()
  84 {
  85 }
  86
  87
  88 void
  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
 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
 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
 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 }