src/servers/registrar/MessageRunnerManager.h

   1 //------------------------------------------------------------------------------
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   3 //
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   5 //      copy of this software and associated documentation files (the "Software"),
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   9 //      Software is furnished to do so, subject to the following conditions:
  10 //
  11 //      The above copyright notice and this permission notice shall be included in
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  20 //      DEALINGS IN THE SOFTWARE.
  21 //
  22 //      File Name:              MessageRunnerManager.h
  23 //      Author:                 Ingo Weinhold (bonefish@users.sf.net)
  24 //      Description:    Manages the registrar side "shadows" of BMessageRunners.
  25 //------------------------------------------------------------------------------
  26
  27 #ifndef MESSAGE_RUNNER_MANAGER_H
  28 #define MESSAGE_RUNNER_MANAGER_H
  29
  30 #include <List.h>
  31 #include <Locker.h>
  32
  33 class BMessage;
  34 class EventQueue;
  35
  36 class MessageRunnerManager {
  37 public:
  38         MessageRunnerManager(EventQueue *eventQueue);
  39         virtual ~MessageRunnerManager();
  40
  41         void HandleRegisterRunner(BMessage *request);
  42         void HandleUnregisterRunner(BMessage *request);
  43         void HandleSetRunnerParams(BMessage *request);
  44         void HandleGetRunnerInfo(BMessage *request);
  45
  46         bool Lock();
  47         void Unlock();
  48
  49 private:
  50         class RunnerEvent;
  51         struct RunnerInfo;
  52         friend class RunnerEvent;
  53
  54 private:
  55         bool _AddInfo(RunnerInfo *info);
  56         bool _RemoveInfo(RunnerInfo *info);
  57         RunnerInfo *_RemoveInfo(int32 index);
  58         RunnerInfo *_RemoveInfoWithToken(int32 token);
  59         bool _DeleteInfo(RunnerInfo *info, bool eventRemoved);
  60
  61         int32 _CountInfos() const;
  62
  63         RunnerInfo *_InfoAt(int32 index) const;
  64         RunnerInfo *_InfoForToken(int32 token) const;
  65
  66         bool _HasInfo(RunnerInfo *info) const;
  67
  68         int32 _IndexOf(RunnerInfo *info) const;
  69         int32 _IndexOfToken(int32 token) const;
  70
  71         bool _DoEvent(RunnerInfo *info);
  72         bool _ScheduleEvent(RunnerInfo *info);
  73
  74         int32 _NextToken();
  75
  76 private:
  77         BList           fRunnerInfos;
  78         BLocker         fLock;
  79         EventQueue      *fEventQueue;
  80         int32           fNextToken;
  81 };
  82
  83 #endif  // MESSAGE_RUNNER_MANAGER_H