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re PR libobjc/14382 ([libobjc] Calling +initialize on a per category basis)

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2005-12-15  David Ayers  <d.ayers@inode.at>

	PR libobjc/14382
	* README (+load,+initialize): Fix documentation to reflect
	intended and implemented semantics for +load and +initialize.

From-SVN: r108584
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David Ayers 2005-12-15 17:46:17 +01:00 committed by David Ayers
parent e6add59b16
commit bf5b295c6a
2 changed files with 22 additions and 9 deletions
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6
libobjc/ChangeLog
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@ -1,3 +1,9 @@
2005-12-15 David Ayers <d.ayers@inode.at>
PR libobjc/14382
* README (+load,+initialize): Fix documentation to reflect
intended and implemented semantics for +load and +initialize.
2005-12-12 Andrew Pinski <pinskia@physics.uc.edu> 2005-12-12 Andrew Pinski <pinskia@physics.uc.edu>
* encoding.c (TYPE_FIELDS): Fix to skip over just _C_STRUCT_B and * encoding.c (TYPE_FIELDS): Fix to skip over just _C_STRUCT_B and

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libobjc/README
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@ -39,19 +39,26 @@ adopts it -- it is not enough to inherit them. The flag
`-Wprotocols' is the default which requires them defined. `-Wprotocols' is the default which requires them defined.
+load
===========
This method, if defined, is called for each class and category
implementation when the class is loaded into the runtime. This method
is not inherited, and is thus not called for a subclass that doesn't
define it itself. Thus, each +load method is called exactly once by
the runtime. The runtime invocation of this method is thread safe.
+initialize +initialize
=========== ===========
This method, if defined, is called before any other instance or class This method, if defined, is called before any other instance or class
methods of that particular class. This method is not inherited, and methods of that particular class. For the GNU runtime, this method is
is thus not called as initializer for a subclass that doesn't define not inherited, and is thus not called as initializer for a subclass that
it itself. Thus, each +initialize method is called exactly once (or doesn't define it itself. Thus, each +initialize method is called exactly
never if no methods of that particular class is never called). once by the runtime (or never if no methods of that particular class is
Besides this, it is allowed to have several +initialize methods, one never called). It is wise to guard against multiple invocations anyway
for each category. The order in which these (multiple methods) are to remain portable with the NeXT runtime. The runtime invocation of
called is not well defined. I am not completely certain what the this method is thread safe.
semantics of this method is for other implementations, but this is
how it works for GNU Objective C.
Passivation/Activation/Typedstreams Passivation/Activation/Typedstreams