ACE_TSS< TYPE > Class Template Reference

Allows objects that are "physically" in thread specific storage (i.e., private to a thread) to be accessed as though they were "logically" global to a program. More...

#include <TSS_T.h>

Collaboration diagram for ACE_TSS< TYPE >:

[legend]List of all members.

Public Member Functions
	ACE_TSS (TYPE *ts_obj=0)
virtual	~ACE_TSS (void)
	Deregister with thread-key administration.
TYPE *	ts_object (void) const
TYPE *	ts_object (TYPE *)
TYPE *	operator-> () const
	operator TYPE * (void) const
	Return or create and return the calling threads TYPE object.
virtual TYPE *	make_TSS_TYPE (void) const
	Hook for construction parameters.
void	dump (void) const
	Dump the state of an object.
Protected Member Functions
TYPE *	ts_get (void) const
int	ts_init (void)
void	operator= (const ACE_TSS< TYPE > &)
	ACE_TSS (const ACE_TSS< TYPE > &)
Protected Attributes
TYPE *	type_
	This implementation only works for non-threading systems...

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Detailed Description

template<class TYPE>
class ACE_TSS< TYPE >

Allows objects that are "physically" in thread specific storage (i.e., private to a thread) to be accessed as though they were "logically" global to a program.

This class is a wrapper around the OS thread library thread-specific functions. It uses the <C++ operator->> to shield applications from the details of accessing thread-specific storage.

Note:

For maximal portability, <TYPE> cannot be a built-in type, but instead should be a user-defined class (some compilers will allow a built-in type, others won't). See template class ACE_TSS_Type_Adapter, below, for adapting built-in types to work with ACE_TSS.

Beware when creating static instances of this type (as with any other, btw). The unpredictable order of initialization across different platforms may cause a situation where you'd use the instance, before it is fully initialized. That's why typically instances of this type are dynamicaly allocated. On the stack it is typically allocated inside the ACE_Thread::svc() method which limits its lifetime appropriately.

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Constructor & Destructor Documentation

template<class TYPE>

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE ACE_TSS< TYPE >::ACE_TSS

(

TYPE *

ts_obj = 0

)

If caller has passed us a non-NULL ts_obj *, then we'll just use this to initialize the thread-specific value (but only for the calling thread). Thus, subsequent calls to <operator->> in this thread will return this value. This is useful since it enables us to assign objects to thread-specific data that have arbitrarily complex constructors.

template<class TYPE>

ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_TSS< TYPE >::~ACE_TSS

(

void

)

[virtual]

Deregister with thread-key administration.

template<class TYPE>

ACE_TSS< TYPE >::ACE_TSS

(

const ACE_TSS< TYPE > &

)

[protected]

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Member Function Documentation

template<class TYPE>

void ACE_TSS< TYPE >::dump

(

void

)

const

Dump the state of an object.

Reimplemented in ACE_TSS_Connection.

template<class TYPE>

TYPE * ACE_TSS< TYPE >::make_TSS_TYPE

(

void

)

const [virtual]

Hook for construction parameters.

Reimplemented in ACE_TSS_Connection.

template<class TYPE>

ACE_TSS< TYPE >::operator TYPE *

(

void

)

const

Return or create and return the calling threads TYPE object.

template<class TYPE>

TYPE * ACE_TSS< TYPE >::operator->

(

)

const

Use a "smart pointer" to get the thread-specific object associated with the <key_>.

template<class TYPE>

void ACE_TSS< TYPE >::operator=

(

const ACE_TSS< TYPE > &

)

[protected]

template<class TYPE>

ACE_INLINE TYPE * ACE_TSS< TYPE >::ts_get

(

void

)

const [protected]

Actually implements the code that retrieves the object from thread-specific storage.

template<class TYPE>

ACE_INLINE int ACE_TSS< TYPE >::ts_init

(

void

)

[protected]

Factors out common code for initializing TSS. This must NOT be called with the lock held...

template<class TYPE>

ACE_INLINE TYPE * ACE_TSS< TYPE >::ts_object

(

TYPE *

)

Set the thread-specific object for the key associated with this object.

template<class TYPE>

ACE_INLINE TYPE * ACE_TSS< TYPE >::ts_object

(

void

)

const

Get the thread-specific object for the key associated with this object. Returns 0 if the data has never been initialized, otherwise returns a pointer to the data.

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Member Data Documentation

template<class TYPE>

TYPE* ACE_TSS< TYPE >::type_ [protected]

This implementation only works for non-threading systems...

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The documentation for this class was generated from the following files:

• TSS_T.h
• TSS_T.cpp
• TSS_T.inl

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