diff options
Diffstat (limited to 'ace/TSS_T.h')
| -rw-r--r-- | ace/TSS_T.h | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/ace/TSS_T.h b/ace/TSS_T.h index c43f18bf66b..27b8ed852f2 100644 --- a/ace/TSS_T.h +++ b/ace/TSS_T.h @@ -22,20 +22,21 @@ # pragma once #endif /* ACE_LACKS_PRAGMA_ONCE */ -// This should probably go somewhere else, but it's only used here and in Thread_Manager. +// This should probably go somewhere else, but it's only used here and +// in Thread_Manager. +// Note there is no ACE_TSS_SET because one would typicaly do +// 'ACE_TSS_GET()->xyz_ = value', so the macro would have been too +// complicated. # if defined (ACE_HAS_THREADS) && (defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) || defined (ACE_HAS_TSS_EMULATION)) # define ACE_TSS_TYPE(T) ACE_TSS< T > # if defined (ACE_HAS_BROKEN_CONVERSIONS) # define ACE_TSS_GET(I, T) (*(I)) -# define ACE_TSS_SET(I, T, V) (*(I) = (V)) # else # define ACE_TSS_GET(I, T) ((I)->operator T * ()) -# define ACE_TSS_SET(I, T, V) ((I)->operator T & () = (V)) # endif /* ACE_HAS_BROKEN_CONVERSIONS */ # else # define ACE_TSS_TYPE(T) T # define ACE_TSS_GET(I, T) (I) -# define ACE_TSS_SET(I, T, V) ((I)=(V)) # endif /* ACE_HAS_THREADS && (ACE_HAS_THREAD_SPECIFIC_STORAGE || ACE_HAS_TSS_EMULATION) */ #include "ace/Thread_Mutex.h" @@ -59,6 +60,15 @@ ACE_BEGIN_VERSIONED_NAMESPACE_DECL * 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. + * + * @note 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. + * */ template <class TYPE> class ACE_TSS @@ -73,6 +83,7 @@ public: * thread will return this value. This is useful since it enables * us to assign objects to thread-specific data that have * arbitrarily complex constructors. + * */ ACE_TSS (TYPE *ts_obj = 0); @@ -117,7 +128,7 @@ protected: /// Factors out common code for initializing TSS. This must NOT be /// called with the lock held... - int ts_init (void) const; + int ts_init (void); #if !(defined (ACE_HAS_THREADS) && (defined (ACE_HAS_THREAD_SPECIFIC_STORAGE) || defined (ACE_HAS_TSS_EMULATION))) /// This implementation only works for non-threading systems... |