The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.
In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.
This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.
there are two parts to make this problem visible , the first is
our new gc new freeing zvals in an opposite direction(compare to 7.2)
the second is zend_object_store_del doesn't check IS_VALID since 7.3
(using assertion instead)
Parents may be unlinked while another generator sharing part of the
chain is running. As such, we cannot assume that the parent chain
goes all the way to the root. Instead walk backwards from root to
leaf, like we also do during destruction.
Make sure we always update root and parent references before
releasing the old root object.
This fixes some crashes under aggressive cycle collection, so
hopefully this will also fix bug #75351.
Do not run finally blocks in generators on unclean shutdown (e.g.
caused by exit). This is consistent with how finally blocks outside
of generators behave.
Remove special handling for 2-4 children. Now the three possible
cases are no children, one child, or many children (HT).
The non-linear (many children) case is extremely rare, so there is
no point in trying to optimize it.
Prohibit direct update of GC_REFCOUNT(), GC_SET_REFCOUNT(), GC_ADDREF() and GC_DELREF() shoukf be instead.
Added mactros to validate reference-counting (disabled for now).
These macros are going to be used to eliminate race-condintions during reference-counting on data shared between threads.
