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Diffstat (limited to 'TAO/orbsvcs/orbsvcs/CosConcurrencyControl.idl')
| -rw-r--r-- | TAO/orbsvcs/orbsvcs/CosConcurrencyControl.idl | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/TAO/orbsvcs/orbsvcs/CosConcurrencyControl.idl b/TAO/orbsvcs/orbsvcs/CosConcurrencyControl.idl deleted file mode 100644 index 26b90b70deb..00000000000 --- a/TAO/orbsvcs/orbsvcs/CosConcurrencyControl.idl +++ /dev/null @@ -1,196 +0,0 @@ -/* -*- C++ -*- */ -// $Id$ - -// ============================================================================ -// -// = LIBRARY -// cos -// -// = FILENAME -// CosTransaction.idl -// -// = DESCRIPTION -// Described in CORBAservices: Common Object Services -// Specification, chapter 7 The concurrency service description can -// be downloaded from -// ftp://www.omg.org/pub/docs/formal/97-11-02.idl -// -// = AUTHOR -// OMG and Torben Worm <tworm@cs.wustl.edu> -// -// ============================================================================ - -//CosConcurrencyControl Module, page 7-8 -//Includes the following interfaces: -// LockCoordinator, LockSet, TransactionalLockSet, LockSetFactory - -// The part depending on the transaction service may be included by defining -// TAO_HAS_TRANSACTION_CONTROL_SERVICE - -#if defined (TAO_HAS_TRANSACTION_CONTROL_SERVICE) -#include <CosTransactions.idl> -#endif /* TAO_HAS_TRANSACTION_CONTROL_SERVICE */ - -#pragma prefix "omg.org" - -module CosConcurrencyControl -{ - // = TITLE - // CosConcurrencyControl - // - // = DESCRIPTION - // This idl file describes the concurrency control service. The - // purpose of the concurrency control service is to mediate - // concurrent access to an pbject such that the consistency of - // the object is not compromised when accessed by concurrently - // executing computations. - - // = These are the different lock types supported by this module. - - // For a description of the compatability between the different lock - // types please consult the service description (OMG). - enum lock_mode - { - read, - write, - upgrade, - intention_read, - intention_write - }; - - exception LockNotHeld {}; - // The LockNotHeld exception is is raised when an operation to - // unlock or change the mode of a lock is called and the specified - // lock is not held - -#if defined (TAO_HAS_TRANSACTION_CONTROL_SERVICE) - // @@ The lock coordinator is designed for transactional lock sets, - // so we don't support it (yet). - interface LockCoordinator - { - // = TITLE - // LockCoordinator drops all locks associated with a transaction. - // = DESCRIPTION - // The LockCoordinator interface enables a transaction service to - // drop all locks held by a transaction. - - void drop_locks (); - // Releases all the locks held by the transaction. Designet to be - // used by transaction service when a transaction commits or aborts. - }; -#endif /* TAO_HAS_TRANSACTION_CONTROL_SERVICE */ - - interface LockSet - { - // = TITLE - // LockSet inteface to the concurrency service in implicit - // mode. - // - // = DESCRIPTION - // Clients operating in the implicit mode - // (i.e. non-transactional mode) acquire and release locks - // in lock sets throug this interface. The interface only - // provides operations to acquire and release locks on - // behalf of the calling thread or transaction. - - void lock (in lock_mode mode); - // Acquires a lock on the specified lock set in the specified - // mode. Blocks until lock is obtained. - - boolean try_lock (in lock_mode mode); - // Tries to acquire a lock on the specified lock set. If it is - // not possible to acquire the lock false is returned. - - void unlock (in lock_mode mode) - raises (LockNotHeld); - // Releases a single lock on the specified lock set. A lock can - // be held multiple times in the same mode. If the lock is not - // held the exception LockNotHeld is raised. - - void change_mode (in lock_mode held_mode, - in lock_mode new_mode) - raises (LockNotHeld); - // Changes the mode of the lock on the specified lock set. If a - // conflicting lock is held by another client the call blocks - // until the new mode can be granted. If the lock is not held in - // the specified mode the exception LockNotHeld is raised. - -#if defined (TAO_HAS_TRANSACTION_CONTROL_SERVICE) - LockCoordinator get_coordinator (in CosTransactions::Coordinator which); - // Returns the lock coordinator associated with the specified - // transaction. -#endif /* TAO_HAS_TRANSACTION_CONTROL_SERVICE */ - }; - -#if defined (TAO_HAS_TRANSACTION_CONTROL_SERVICE) - interface TransactionalLockSet - { - // = TITLE - // TransactionalLockSet interface to the concurrency service - // in transactional mode. - // - // = DESCRIPTION - // Clients operating in the transactional mode acquire and - // release locks in lock sets through this interface. The - // interface provides operations identical to the operations - // described in the LockSet interface section. The - // difference beeing that the coordinator for the - // transaction is explicitly passed as a reference to the - // operations. Please see the description of the LockSet - // interface for a detailed description. - - void lock (in CosTransactions::Coordinator current, - in lock_mode mode); - // See LockSet::lock - - boolean try_lock (in CosTransactions::Coordinator current, - in lock_mode mode); - // See LockSet::try_lock - - void unlock (in CosTransactions::Coordinator current, - in lock_mode mode) - raises (LockNotHeld); - // See LockSet::unlock - - void change_mode (in CosTransactions::Coordinator current, - in lock_mode held_mode, - in lock_mode new_mode) - raises (LockNotHeld); - // See LockSet::change_mode - - LockCoordinator get_coordinator (in CosTransactions::Coordinator which); - // See LockSet::get_coordinator - }; -#endif /* TAO_HAS_TRANSACTION_CONTROL_SERVICE */ - - interface LockSetFactory - { - // = TITLE - // Factory interface for the LockSet and - // TransactionalLockSet interfaces. - // - // = DESCRIPTION - // Factory for creating the lock sets. - - LockSet create (); - // Creates a new LockSet and lock coordinator - // @@TAO ??? is this correct? Lock coordinators are associated with - // transactions. - tworm - - LockSet create_related (in LockSet which); - // Creates a lock set related to the specified lock set. Related lock - // sets drop their locks together. - -#if defined (TAO_HAS_TRANSACTION_CONTROL_SERVICE) - TransactionalLockSet create_transactional (); - // Creates a new TransactionalLockSet and lock coordinator for - // transactional mode clients. - - TransactionalLockSet create_transactional_related (in TransactionalLockSet which); - // Creates a new transactional lock set related to the specified lock - // set. Related lock sets drop locks together. -#endif /* TAO_HAS_TRANSACTION_CONTROL_SERVICE */ - }; -}; - - |