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SynchList Class Reference

#include <synchlist.h>

List of all members.

Public Methods

 SynchList ()
 ~SynchList ()
void Append (void *item)
void * Remove ()
void Mapcar (VoidFunctionPtr func)

Private Attributes

List * list
Lock * lock
Condition * listEmpty

Constructor & Destructor Documentation

SynchList::SynchList (    ) 
 

Definition at line 25 of file synchlist.cc.

References list, listEmpty, and lock. 

00026 {
00027     list = new List();
00028     lock = new Lock("list lock"); 
00029     listEmpty = new Condition("list empty cond");
00030 }

SynchList::~SynchList (    ) 
 

Definition at line 37 of file synchlist.cc.

References list, listEmpty, and lock. 

00038 { 
00039     delete list; 
00040     delete lock;
00041     delete listEmpty;
00042 }

Member Function Documentation

void SynchList::Append (  void *    item ) 
 

Definition at line 54 of file synchlist.cc.

References Lock::Acquire, List::Append, list, listEmpty, lock, Lock::Release, and Condition::Signal.

Referenced by MailBox::Put. 

00055 {
00056     lock->Acquire();            // enforce mutual exclusive access to the list 
00057     list->Append(item);
00058     listEmpty->Signal(lock);    // wake up a waiter, if any
00059     lock->Release();
00060 }

void SynchList::Mapcar (  VoidFunctionPtr    func ) 
 

Definition at line 93 of file synchlist.cc.

References Lock::Acquire, list, lock, List::Mapcar, Lock::Release, and VoidFunctionPtr. 

00094 { 
00095     lock->Acquire(); 
00096     list->Mapcar(func);
00097     lock->Release(); 
00098 }

void * SynchList::Remove (    ) 
 

Definition at line 71 of file synchlist.cc.

References Lock::Acquire, ASSERT, List::IsEmpty, list, listEmpty, lock, NULL, Lock::Release, List::Remove, and Condition::Wait.

Referenced by MailBox::Get. 

00072 {
00073     void *item;
00074 
00075     lock->Acquire();                    // enforce mutual exclusion
00076     while (list->IsEmpty())
00077         listEmpty->Wait(lock);          // wait until list isn't empty
00078     item = list->Remove();
00079     ASSERT(item != NULL);
00080     lock->Release();
00081     return item;
00082 }

Member Data Documentation

List* SynchList::list [private]
 

Definition at line 37 of file synchlist.h.

Referenced by Append, Mapcar, Remove, SynchList, and ~SynchList.

Condition* SynchList::listEmpty [private]
 

Definition at line 39 of file synchlist.h.

Referenced by Append, Remove, SynchList, and ~SynchList.

Lock* SynchList::lock [private]
 

Definition at line 38 of file synchlist.h.

Referenced by Append, Mapcar, Remove, SynchList, and ~SynchList.

The documentation for this class was generated from the following files:
Generated on Mon Feb 10 09:54:59 2003 for nachos by doxygen1.2.14 written by Dimitri van Heesch, © 1997-2002
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