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Dmitry Stogov
2018-10-17 10:48:29 +03:00
parent a06f0f3d3a
commit 9ef07c88bd
1 changed files with 2 additions and 2 deletions
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UPGRADING.INTERNALS
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@@ -124,13 +124,13 @@ PHP 7.4 INTERNALS UPGRADE NOTES
h. Opcache may make classes and op_arrays immutable. Such classes are marked
by ZEND_ACC_IMMUTABLE flag, they are not going to be copied from opcache
shard memory to process memory and must not be modified at all.
shared memory to process memory and must not be modified at all.
Few related data structures were changed to allow addressing mutable data
structures from immutable ones. This access is implemented through
ZEND_MAP_PTR... abstraction macros and, basically, uses additional level of
indirection. op_array->run_time_cache, op_array->static_variables_ptr,
class_entry->static_members_table and class_entry->iterator_funcs_ptr now
have to be access through ZEND_MAP_PTR... macros.
have to be accessed through ZEND_MAP_PTR... macros.
It's also not allowed to change op_array->reserved[] handles of immutable
op_arrays. Instead, now you have to reserve op_array handle using
zend_get_op_array_extension_handle() during MINIT and access its value