#include <Reverse_Lock_T.h>
Inheritance diagram for ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >:
Public Types | |
| typedef ACE_LOCKING_MECHANISM | ACE_LOCK |
Public Member Functions | |
| ACE_Reverse_Lock (ACE_LOCKING_MECHANISM &lock, ACE_Acquire_Method::METHOD_TYPE acquire_method=ACE_Acquire_Method::ACE_REGULAR) | |
| Constructor. All locking requests will be forwarded to <lock>. | |
| virtual | ~ACE_Reverse_Lock (void) |
| virtual int | acquire (void) |
| Release the lock. | |
| virtual int | tryacquire (void) |
| Release the lock. | |
| virtual int | release (void) |
| Acquire the lock. | |
| virtual int | acquire_read (void) |
| Release the lock. | |
| virtual int | acquire_write (void) |
| Release the lock. | |
| virtual int | tryacquire_read (void) |
| Release the lock. | |
| virtual int | tryacquire_write (void) |
| Release the lock. | |
| virtual int | tryacquire_write_upgrade (void) |
| Release the lock. | |
| virtual int | remove (void) |
| Explicitly destroy the lock. | |
Private Attributes | |
| ACE_LOCKING_MECHANISM & | lock_ |
| The concrete locking mechanism that all the methods delegate to. | |
| ACE_Acquire_Method::METHOD_TYPE | acquire_method_ |
| This indicates what kind of acquire method will be called. | |
This is an interesting adapter class that changes a lock into a reverse lock, i.e., <acquire> on this class calls <release> on the lock, and <release> on this class calls <acquire> on the lock. One motivation for this class is when we temporarily want to release a lock (which we have already acquired) but then reacquire it soon after. An alternative design would be to add a Anti_Guard or Reverse_Guard class which would <release> on construction and <acquire> destruction. However, there are *many* varieties of the Guard class and this design choice would lead to at least 6 new classes. One new ACE_Reverse_Lock class seemed more reasonable.
Definition at line 72 of file Reverse_Lock_T.h.
| typedef ACE_LOCKING_MECHANISM ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::ACE_LOCK |
Definition at line 76 of file Reverse_Lock_T.h.
| ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::ACE_Reverse_Lock | ( | ACE_LOCKING_MECHANISM & | lock, | |
| ACE_Acquire_Method::METHOD_TYPE | acquire_method = ACE_Acquire_Method::ACE_REGULAR | |||
| ) |
Constructor. All locking requests will be forwarded to <lock>.
Definition at line 11 of file Reverse_Lock_T.inl.
00014 : lock_ (lock), 00015 acquire_method_ (acquire_method) 00016 { 00017 }
| ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::~ACE_Reverse_Lock | ( | void | ) | [virtual] |
Destructor. If <lock_> was not passed in by the user, it will be deleted.
Definition at line 19 of file Reverse_Lock_T.cpp.
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::acquire | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 32 of file Reverse_Lock_T.cpp.
References ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::lock_.
00033 { 00034 return this->lock_.release (); 00035 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::acquire_read | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 58 of file Reverse_Lock_T.cpp.
References ACE_NOTSUP_RETURN.
00059 { 00060 ACE_NOTSUP_RETURN (-1); 00061 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::acquire_write | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 65 of file Reverse_Lock_T.cpp.
References ACE_NOTSUP_RETURN.
00066 { 00067 ACE_NOTSUP_RETURN (-1); 00068 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::release | ( | void | ) | [virtual] |
Acquire the lock.
Implements ACE_Lock.
Definition at line 46 of file Reverse_Lock_T.cpp.
References ACE_Acquire_Method::ACE_READ, ACE_Acquire_Method::ACE_WRITE, and ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::lock_.
00047 { 00048 if (this->acquire_method_ == ACE_Acquire_Method::ACE_READ) 00049 return this->lock_.acquire_read (); 00050 else if (this->acquire_method_ == ACE_Acquire_Method::ACE_WRITE) 00051 return this->lock_.acquire_write (); 00052 else 00053 return this->lock_.acquire (); 00054 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::remove | ( | void | ) | [virtual] |
Explicitly destroy the lock.
Implements ACE_Lock.
Definition at line 25 of file Reverse_Lock_T.cpp.
References ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::lock_.
00026 { 00027 return this->lock_.remove (); 00028 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::tryacquire | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 39 of file Reverse_Lock_T.cpp.
References ACE_NOTSUP_RETURN.
00040 { 00041 ACE_NOTSUP_RETURN (-1); 00042 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::tryacquire_read | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 72 of file Reverse_Lock_T.cpp.
References ACE_NOTSUP_RETURN.
00073 { 00074 ACE_NOTSUP_RETURN (-1); 00075 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::tryacquire_write | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 79 of file Reverse_Lock_T.cpp.
References ACE_NOTSUP_RETURN.
00080 { 00081 ACE_NOTSUP_RETURN (-1); 00082 }
| int ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::tryacquire_write_upgrade | ( | void | ) | [virtual] |
Release the lock.
Implements ACE_Lock.
Definition at line 86 of file Reverse_Lock_T.cpp.
References ACE_NOTSUP_RETURN.
00087 { 00088 ACE_NOTSUP_RETURN (-1); 00089 }
ACE_Acquire_Method::METHOD_TYPE ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::acquire_method_ [private] |
This indicates what kind of acquire method will be called.
Definition at line 121 of file Reverse_Lock_T.h.
ACE_LOCKING_MECHANISM& ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::lock_ [private] |
The concrete locking mechanism that all the methods delegate to.
Definition at line 118 of file Reverse_Lock_T.h.
Referenced by ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::acquire(), ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::release(), and ACE_Reverse_Lock< ACE_LOCKING_MECHANISM >::remove().
1.4.7