smart_str uses an over-allocated string to optimize for append operations. Functions that use smart_str tend to return the over-allocated string directly. This results in unnecessary memory usage, especially for small strings.
The overhead can be up to 231 bytes for strings smaller than that, and 4095 for other strings. This can be avoided for strings smaller than `4096 - zend_string header size - 1` by reallocating the string.
This change introduces `smart_str_trim_to_size()`, and calls it in `smart_str_extract()`. Functions that use `smart_str` are updated to use `smart_str_extract()`.
Fixes GH-8896
Previously, code such as subclasses of SplFixedArray would check for method
overrides when instantiating the objects.
This optimization was mentioned as a followup to GH-6552
This makes reading/writing with `$splObjectStorage[$offset]` shorthand twice as
fast as it was previously, and a bit faster than offsetGet/offsetSet instead of
(previously) much slower.
Call destructor after overriding old SplObjectStorage entry.
Previously, it was called before, which was possibly unsafe
if the destructor had side effects.
Add tests.
Closes GH-7695
Related to GH-7690
Check for ref in SplObjectStorage->__unserialize, check for ref.
SplObjectStorage->unserialize may be a different cause of references
for malformed inputs, so continue checking
In internally used methods, convert references to non-references if they're
found.
Same as we do for the IteratorAggregate case, initialize the
Iterator methods upfront. This is preparation for an upcoming
change to automatically determine whether get_iterator can be
reused in a child class, in the same way we already do for
IteratorAggregate.
The object hash is not particularly useful (anymore) and just
clutters the output. It encodes the same information as the
object ID, which is already part of the output.
1. Update: http://www.php.net/license/3_01.txt to https, as there is anyway server header "Location:" to https.
2. Update few license 3.0 to 3.01 as 3.0 states "php 5.1.1, 4.1.1, and earlier".
3. In some license comments is "at through the world-wide-web" while most is without "at", so deleted.
4. fixed indentation in some files before |
We're starting to see a mix between uses of zend_bool and bool.
Replace all usages with the standard bool type everywhere.
Of course, zend_bool is retained as an alias.
Introduced by the recent switch to a zend_object. Unserialize the
object into a tmp_var to avoid leaving behind a stack reference.
Fixes oss-fuzz #29271.
Track an 8-byte pointer as the key instead of 16-byte zval.
(4 byte on 32-bit builds)
The memory used for a set of 1 million objects decreased from
114 MiB to 106 MiB.
Use the new `Z_PARAM_*` APIs to parse the `zend_object*` pointer directly
Closes GH-6566
get_gc() implementations that need to explore heterogeneous data
currently work by computing how many GC entries they need,
allocating a buffer for that and storing it on the object. This
is inefficient and wastes memory, because the buffer is retained
after the GC run.
This commit adds an API for a single global GC buffer, which can
be reused by get_gc implementations (as only one get_gc call is
ever active at the same time). The GC buffer will automatically
grow during the GC run and be discarded at the end.
We actually implement `::__debugInfo()` and drop the `get_debug_info()`
handlers of all relevant SPL classes. This is cleaner and gives more
flexibility regarding overriding the functionality in descendant
classes.
To explicitly indicate that objects are uncomparable. For now
this has no functional difference from the usual 1 return value,
but makes intent clearer.
Since `zend_parse_parameters()` throws now, there is no reason to
explicitly call `zend_parse_parameters_throw()` anymore, and since both
have actually the same implementation, we redefine the latter as macro.
If count is ZEND_LONG_MIN the count-- loop underflows. This is
ultimately harmless, but results in a ubsan warning.
Fix this by adding a sanity check that the count isn't negative,
because that doesn't make sense...
Bob Weinand