Use better buffer reallocation strategy

Use mnd_emalloc/mnd_efree

Reimplemented MYSQLND_MEMORY_POOL to avoid allocations ouside of pool. Store all data related to result set in the pool.

Use mnd_erealloc()

Merge mysqlnd_field_hash_key structure into st_mysqlnd_field.

Use stack-allocated packets.

Made "result", "statement" and "last_message" to always use Zend MM heap. (even for persistent connections these entities don't relive request boundary)

Use zval_ptr_dtor_nogc() for data that can't be circular

Update copyright headers to 2017

Merge branch 'PHP-7.1'

Optimized memory handling of BIT fields. Less memory copies and less
memory usage.

further normalizations, uint vs uint32_t

fix merge mistake

yet one more replacement run

Fix for bug #71863 Segfault when EXPLAIN with "Unknown column" error

The reason was that after the big refactoring of mysqlnd at the end of
last year code that is initializing the error_

Fix for bug #71863 Segfault when EXPLAIN with "Unknown column" error

The reason was that after the big refactoring of mysqlnd at the end of
last year code that is initializing the error_info structure in the
result set was not added. It existed already for connections and PS.
The code that segfaults is hit only with MariaDB because MariaDB sends
full metadata about the EXPLAIN query + EOF packet and only then it sends
an error packet. MySQL doesn't do that but sends directly an error which
is caught (by different code path). As errors during execution (which means
after sending meta) are pretty rare there was no test case of MySQL to
catch it.

show more ...

Fix for bug #71863 Segfault when EXPLAIN with "Unknown column" error

The reason was that after the big refactoring of mysqlnd at the end of
last year code that is initializing the error_

Fix for bug #71863 Segfault when EXPLAIN with "Unknown column" error

The reason was that after the big refactoring of mysqlnd at the end of
last year code that is initializing the error_info structure in the
result set was not added. It existed already for connections and PS.
The code that segfaults is hit only with MariaDB because MariaDB sends
full metadata about the EXPLAIN query + EOF packet and only then it sends
an error packet. MySQL doesn't do that but sends directly an error which
is caught (by different code path). As errors during execution (which means
after sending meta) are pretty rare there was no test case of MySQL to
catch it.

show more ...

Fix compiler warnings in mysqlnd

Merge branch 'PHP-7.0'

Fix emails in headers. @mysql.com addresses are no more since many years.

Move free_chunk and resize_chunk into memory pool

Drops 24 bytes from each chunk. For the example in bug #71468 it
reduces memory usage by 30%.

Merge branch 'PHP-7.0'

* PHP-7.0:
Update header to PHP Version 7
Happy new year (Update copyright to 2016)
Happy new year (Update copyright to 2016)

Merge branch 'PHP-5.6' into PHP-7.0

* PHP-5.6:
Happy new year (Update copyright to 2016)

Happy new year (Update copyright to 2016)

MNDR:
- constify some parameters to MYSQLND_RES functions

MNDR:
- cleanup in mysqlnd_result.c
- switch from zend_ulong to size_t for lengths. Accordingly change
mysqli and pdo_mysql for this.

MNDR:
- remove unused macros

MNDR:
- move things out of mysqlnd_priv.h