ERROR HANDLING CODE
BACKGROUND:
There can be a potential crash due to buffer overrun in
SSL error handling code due to missing comma in
ssl_error_string[] array in viosslfactories.c.
ANALYSIS:
Found by code Inspection.
FIX:
Added the missing comma in SSL error handling code
in ssl_error_string[] array in viosslfactories.c.
OPENSSL
Description: Specify preference to disable compression
while using OpenSSL library. OpenSSL uses
zlib compression by default which may
lead to some problems.
CONNECTIONS IF SPE
Problem description: -ssl-key value is not validated, you can assign any bogus
text to --ssl-key and it is not verified that it exists, and more importantly,
it allows the client to connect to mysqld.
Fix: Added proper validations checks for --ssl-key.
Note:
1) Documentation changes require for 5.1, 5.5, 5.6 and trunk in the sections
listed below and the details are :
http://dev.mysql.com/doc/refman/5.6/en/ssl-options.html#option_general_ssl
and
REQUIRE SSL section of
http://dev.mysql.com/doc/refman/5.6/en/grant.html
2) Client having with option '--ssl', should able to get ssl connection. This
will be implemented as part of separate fix in 5.6 and trunk.
On shutdown(), Windows can drop traffic still queued for sending even if that
wasn't specifically requested. As a result, fatal errors (those after
signaling which the server will drop the connection) were sometimes only
seen as "connection lost" on the client side, because the server-side
shutdown() erraneously discarded the correct error message before sending
it.
If on Windows, we now use the Windows API to access the (non-broken) equivalent
of shutdown().
Backport from trunk
include/violite.h:
export mysql_socket_shutdown(). It lives in vio in the backport.
sql/mysqld.cc:
Go through our own shutdown() rather than straight to the POSIX one.
vio/viosocket.c:
Define mysql_socket_shutdown(). On UNIXoid systems, it's just a wrapper for shutdown(), but
on Window, it uses DisconnectEx, which is magic.
dbug/tests.c:
Added __attribute__((unused)) to get rid of compiler warning
server-tools/instance-manager/guardian.cc:
Added __attribute__((unused)) to get rid of compiler warning
sql/filesort.cc:
Added __attribute__((unused)) to get rid of compiler warning
sql/slave.cc:
Added __attribute__((unused)) to get rid of compiler warning
sql/sql_load.cc:
Added __attribute__((unused)) to get rid of compiler warning
sql/sql_table.cc:
Added __attribute__((unused)) to get rid of compiler warning
storage/maria/ma_blockrec.c:
Added __attribute__((unused)) to get rid of compiler warning
storage/maria/ma_check.c:
Added missing cast
storage/maria/ma_loghandler.c:
Added __attribute__((unused)) to get rid of compiler warning
storage/maria/ma_recovery.c:
Added __attribute__((unused)) to get rid of compiler warning
storage/pbxt/src/cache_xt.cc:
Added __attribute__((unused)) to get rid of compiler warning
storage/xtradb/fil/fil0fil.c:
Removed not used variable
storage/xtradb/handler/ha_innodb.cc:
Use unused variable
vio/viosocket.c:
Remove usage of not used variable
vio/viosslfactories.c:
Added cast
- Fix active lock in freed memory in ha_archive (share mutex was not released prior to free())
- Do not attempt vio_fastsend or vio_keepalive on named pipes and shared memory.
Reason: inconsistent compilation, federatedx is compiled without SAFEMALLOC
flag, while anything else is compiled with SAFEMALLOC.
As a consequence, my_hash_init used inside federatedx initialization does not
provide correct caller info parameters (file, line) , so they are initialized with
whatever is on stack. When info about allocated memory is output in
COM_DEBUG command, the server crashes trying to output string starting at
0xcccccccccccccccc.
The fix is to remove SAFEMALLOC preprocessor flags
from every CMakeLists.txt, except the top-level one.
Also, SAFEMALLOC is not defined by default now, instead
there is WITH_DEBUG_FULL CMake option which adds
-DSAFEMALLOC to C and C++ flags in debug compilation.
This option is off by default, because
1) Debug C runtime already has heap debugging builtin with
overwrite and leak detection
2)safemalloc considerably slows down the tests.
Note also that
- SAFEMALLOC is gone in MySQL5.5
- On Windows, heap related overflows can also be found using free pageheap utility
(that is also part of application verifier). This is even more efficient if there are no other layers
on top of Windows heap allocator, e.g it is most efficient with release version.
Switch makefiles to use libtool to build libmysqld.so, as well as all its
dependencies.
The previous MYSQL_PLUGIN_DEPENDS_ON_MYSQL_INTERNALS() declaration is removed,
as it does not work well with a libtool build. Instead, plugins that need it
can specify an alternate object in MYSQL_PLUGIN_STATIC() that will be used for
embedded library. The plugin must then take care itself of compiling the
special object for embedded, rebuilding the source files previously listed in
MYSQL_PLUGIN_DEPENDS_ON_MYSQL_INTERNALS() with @plugin_embedded_defs@ in
CFLAGS/CXXFLAGS. The extra target @XXX_embedded_static_target@ is available
for the special object, this will be empty when --without-embedded-server.
All in-tree plugins are changed to build their static targets with libtool.
Additional plugins that want to work with libmysqld.so will need to be
similarly modified to build with libtool (or otherwise provide an -fPIC
object). Dynamically loaded plugins are not affected.
The old libraries like libmysys.a, libmyisam.a and similar libraries, which
were installed by `make install` though this is of little use, are still built
and installed to not break package scripts etc. that expect them. These
libraries are kept static to avoid introducing new .so dependencies.
The patch also fixes a handfull of duplicate symbol linker errors, where we
included some object twice during linking; these for one reason or another did
not produce errors before but caused problems on some platforms with this
patch (eg. Mac OS X linker is more strict for shared objects).
This patch only does what is necessary to build libmysqld.so. There are some
more cleanups that are possible now that we are using libtool more fully,
which could done in subsequent patches (though we may not bother as we are
switching from autotools to CMake anyway):
- In libmysql_r/, we should be able to just link libmysys.la etc, instead of
symlinking and re-compiling sources into the directory.
- In libmysql/, we can similarly avoid symlinking and recompiling sources if
we instead build a libmysys_nothread.la library with appropriate CFLAGS and
link that.
- In sql/, we can build a separate target libmysql_int.la with appropriate
CFLAGS for embedded and use that in libmysqld/ instead of symlinking
sources.
- libmysys.a, libmyisam.a and similar libraries could be installed as .so
also to save on code size; or alternatively could be not installed at all.
client/Makefile.am:
Updated for using libtool
config/ac-macros/plugins.m4:
Replace MUSQL_PLUGIN_DEPENDS_ON_MYSQL_INTERNALS with mechanism for plugins
to specify alternate object for embedded.
configure.in:
Fix linking duplicate objects related to THREAD_LOBJECTS.
dbug/Makefile.am:
Updated for using libtool
extra/Makefile.am:
Fix relative paths.
libmysqld/Makefile.am:
Build libmysqld.la using libtool
libmysqld/examples/Makefile.am:
Updated to use libtool
mysys/Makefile.am:
Updated to use libtool.
Fix linking duplicate objects related to THREAD_LOBJECTS.
mysys/my_uuid.c:
Fix conflicting global mutex name by making it static.
regex/Makefile.am:
Updated to use libtool
sql/Makefile.am:
Updated to use libtool
sql/item_func.cc:
Fix conflicting mutex name.
sql/mysql_priv.h:
Fix conflicting mutex name
sql/mysqld.cc:
Fix conflicting mutex name.
Add missing call of my_uuid_end().
storage/archive/Makefile.am:
Updated to use libtool
storage/archive/plug.in:
Updated to use libtool
storage/blackhole/Makefile.am:
Updated to use libtool
storage/blackhole/plug.in:
Updated to use libtool
storage/csv/Makefile.am:
Updated to use libtool
storage/csv/plug.in:
Updated to use libtool
storage/example/Makefile.am:
Updated to use libtool
storage/federated/Makefile.am:
Updated to use libtool
storage/federated/plug.in:
Updated to use libtool
storage/federatedx/Makefile.am:
Updated to use libtool
storage/federatedx/plug.in:
Updated to use libtool
storage/heap/Makefile.am:
Updated to use libtool
storage/heap/plug.in:
Updated to use libtool
storage/innobase/Makefile.am:
Updated to use libtool
storage/innobase/plug.in.disabled:
Updated to use libtool
storage/innodb_plugin/Makefile.am:
Updated to use libtool
storage/maria/CMakeLists.txt:
Fix linking duplicate object in maria_dump_log, causes failure on Mac OS X
storage/maria/Makefile.am:
Updated to use libtool
Fix linking duplicate object in maria_dump_log, causes link failure on Mac OS X
storage/maria/ma_loghandler.c:
Move maria_dump_log code to separate file to fix duplicate object link failures.
storage/maria/ma_loghandler.h:
Move maria_dump_log code to separate file to fix duplicate object link failures.
storage/maria/maria_dump_log.c:
Move maria_dump_log code to separate file to fix duplicate object link failures.
storage/maria/plug.in:
Updated to use libtool
storage/myisam/Makefile.am:
Updated to use libtool
storage/myisam/plug.in:
Updated to use libtool
storage/myisammrg/Makefile.am:
Updated to use libtool
storage/myisammrg/plug.in:
Updated to use libtool
storage/pbxt/plug.in:
Updated to use libtool
storage/pbxt/src/Makefile.am:
Updated to use libtool
storage/xtradb/Makefile.am:
Updated to use libtool
storage/xtradb/plug.in:
Updated to use libtool
strings/Makefile.am:
Updated to use libtool
unittest/unit.pl:
Don't attempt to run libtool internal files as unit tests.
vio/Makefile.am:
Updated to use libtool
- Changed to still use bcmp() in certain cases becasue
- Faster for short unaligneed strings than memcmp()
- Bettern when using valgrind
- Changed to use my_sprintf() instead of sprintf() to get higher portability for old systems
- Changed code to use MariaDB version of select->skip_record()
- Removed -%::SCCS/s.% from Makefile.am:s to remove automake warnings
Add some extra error output and code cleanup in an attempt to fix/debug
a rare random testsuite problem in check_warnings, where the exit code
from mysqltest is somehow corrupted inside mysql-test-run.pl.
include/my_global.h:
Fix compiler warnings on some platforms.
mysql-test/lib/My/SafeProcess.pm:
Move dereference of $? subprocess exit code closer to where it is generated,
to make the code more robust and on the chance that this will fix the
occasional problems in check_warnings we see in Buildbot.
mysql-test/mysql-test-run.pl:
When check_warnings failed, also log the mysqld server for which it failed.
sql/sql_lex.cc:
Fix compiler warning about possibly uninitialised value, by rewriting a for()
loop that is always executed at least once into a do .. while() loop with an
assert.
sql/table.cc:
Fix compiler warning about uninitialised value.
storage/federatedx/ha_federatedx.cc:
Fix uninitialised variable.
storage/maria/ma_delete.c:
Fix compiler warning about uninitialised value.
storage/maria/ma_loghandler.c:
Fix compiler warning about uninitialised value.
storage/myisam/ft_stopwords.c:
Fix compiler warning.
storage/myisam/mi_write.c:
Fix compiler warning about possibly uninitialised value, by rewriting a while()
loop that is always executed at least once into a do .. while() loop with an
assert.
storage/xtradb/btr/btr0cur.c:
Fix compiler warning about possibly uninitialised value.
support-files/compiler_warnings.supp:
Fix warning suppression to cover all cases in yassl.
vio/viossl.c:
Fix compiler warning.
Fixed bug in Yassle to get correct error messages in case of errors
Provide better error messages in case of ssl connect failure
Updated out-of-date ssl certificates to fix failing mysql-test-system (certificates now active for 10 years)
Fixed bug in query_cache that could cause asserts and hangs in DEBUG builds.
Fixed bug where one connection did not see changes done by another connection.
configure.in:
Changed version number from RC to stable
extra/yassl/src/yassl_error.cpp:
Fixed bug in Yassle to get correct error messages in case of errors
- 'error' is an enum that hold more error numbers than the enum was defined for
include/violite.h:
Added error output string for sslaccept() and sslconnect() to get reason for connect failure
mysql-test/mysql-test-run.pl:
Write failed test cases if mysql-test-run fails because of too many errors
mysql-test/r/grant.result:
Update results to reflect new certificates
mysql-test/r/openssl_1.result:
Update results to reflect new certificates
mysql-test/std_data/cacert.pem:
Update ssl certificate
mysql-test/std_data/client-cert.pem:
Update ssl certificate
mysql-test/std_data/client-key.pem:
Update ssl certificate
mysql-test/std_data/server-cert.pem:
Update ssl certificate
mysql-test/std_data/server-key.pem:
Update ssl certificate
mysql-test/t/grant.test:
Update test to reflect new certificates
mysql-test/t/openssl_1.test:
Update test to reflect new certificates
mysql-test/t/query_cache_debug.test:
Remove 'big_test' as test is now fast
sql-common/client.c:
Give a better error message if ssl connect fails
sql/net_serv.cc:
Fixed compiler warnings
sql/slave.cc:
Give a better error message in logs if ssl connect fails
sql/sql_cache.cc:
debug_wait_for_kill() now removes the set watch variable after kill signal
This is needed as invalidate_table() may be called twice for one query.
Ensure that net->query_cache_query is reset after query. This fixes assert in
query_cache_end_of_result() if query_cache_query holds results from previous query.
Removed DBUG_ASSERT(0), as this code can be run by query_cache_debug.test
sql/sql_connect.cc:
Give a better error message if ssl connect fails
sql/sql_parse.cc:
Fixed bug where one connection did not see changes done by another connection.
For statements that changes tables, close_thread_tables() MUST be called before
sending OK as a table handler may not make the changes available for other connections
before unlock_tables().
vio/viossl.c:
Give a better error message if ssl connect fails
- Marked a couple of tests with --big
- Fixed xtradb/handler/ha_innodb.cc to call explain_filename()
storage/xtradb/handler/ha_innodb.cc:
Call explain_filename() to get proper names for partitioned tables
Fix bad merge causing error when specifying test case in non-default suite for mysql-test-run.
Implement the ability to add extra flags and configure options when running BUILD/xxx scripts.
Improve unclear help text in mysql-test-run
BUILD/FINISH.sh:
Implement the ability to add extra flags and configure options when running BUILD/xxx scripts.
BUILD/SETUP.sh:
Implement the ability to add extra flags and configure options when running BUILD/xxx scripts.
extra/yassl/taocrypt/include/block.hpp:
Fix some compiler warnings.
mysql-test/lib/mtr_cases.pm:
Fix bad merge causing error when specifying test case in non-default suite for mysql-test-run.
Also remove some non-essential differences to mysql version to simplify future merges.
mysql-test/mysql-test-run.pl:
Improve help texts.
plugin/fulltext/plugin_example.c:
Fix some compiler warnings.
vio/viosslfactories.c:
Fix some compiler warnings.
implement Davi's review suggestions (post-push fixes)
include/violite.h:
Use official abbreviation for milliseconds (ms)
sql/mysqld.cc:
Fix formatting
Add error handling for the case of CreateEvent error
vio/vio.c:
Use official abbreviation for milliseconds(ms)
Remove superfluous memset
Fix formatting
vio/viosocket.c:
Use official abbreviation for milliseconds (ms)
Use size_t datatype instead of int in pipe_complete_io
- Moved some code from innodb_plugin to xtradb, to ensure that all tests runs
- Did changes in pbxt and maria storage engines becasue of changes in thd->query
- Reverted wrong code in sql_table.cc for how ROW_FORMAT is used.
This is a re-commit of Monty's merge to eliminate an extra commit from
MySQL-5.1.42 that was accidentally included in the merge.
This is a merge of the MySQL 5.1.41 clone-off (clone-5.1.41-build). In
case there are any extra changes done before final MySQL 5.1.41
release, these will need to be merged later before MariaDB 5.1.41
release.
Bug#31621: Windows server hanging during shutdown using named pipes
and idle connection
Problem: when idle pipe connection is forcefully closed with KILL
statement or when the server goes down, thread that is closing connection
would hang infinitely in CloseHandle(). The reason for the hang is that
named pipe operations are performed synchronously. In this mode all IOs
on pipe are serialized, that is CloseHandle() will not abort ReadFile()
in another thread, but wait for ReadFile() to complete.
The fix implements asynchrnous mode for named pipes, where operation of file
are not synchronized. Read/Write operation would fire an async IO and wait for
either IO completion or timeout.
Note, that with this patch timeouts are properly handled for named pipes.
Post-review: Win32 timeout code has been fixed for named pipes and shared
memory. We do not store pointer to NET in vio structure, only the read and
write timeouts.
include/violite.h:
Add pipe_overlapped to Vio structure for async IO for named pipes.
sql-common/client.c:
Use asynchronous pipe IO.
sql/mysqld.cc:
Use asynchronous pipe IO.
vio/vio.c:
-Refactor timeouts for win32 protocols: shared memory and named pipes.
Store read/write timeout in VIO structure, instead of storing pointer
to NET. New function vio_win32_timeout called indirectly via
vio_timeout changes these values.
vio/vio_priv.h:
Remove vio_ignore_timeout.
Add vio_win32_timeout to be used for named pipes and shared memory.
vio/viosocket.c:
Use async IO for named pipes.
After issuing IO, wait for either IO completion, pipe_close_event
or timeout.
Refactor timeouts for named pipe and shared memory.
mysql-test/suite/rpl/t/rpl_binlog_corruption.test:
Disabled the test for Windows (see bug #47639)
mysql-test/suite/rpl/t/rpl_killed_ddl.test:
Disabled the test for Windows (see bug #47638)
vio/viosocket.c:
Added an implementation of vio_poll_read for Windows.
Winsock does not support the poll function.
So the existing generic implementation of vio_poll_read
could not be used for Windows.
* Finished Monty and Jani's merge
* Some InnoDB tests still fail (because it's old xtradb code run against
newer testsuite). They are expected to go after mergning with the latest
xtradb.
not logged
Errors encountered during initialization of the SSL subsystem
are printed to stderr, rather than to the error log.
This patch adds a parameter to several SSL init functions to
report the error (if any) out to the caller. The function
init_ssl() in mysqld.cc is moved after the initialization of
the log subsystem, so that any error messages can be logged to
the error log. Printing of messages to stderr has been
retained to get diagnostic output in a client context.
include/violite.h:
Adding an enumeration for the various errors that can
occur during initialization of the SSL module.
sql/mysqld.cc:
Adding more logging of SSL init errors, and moving
init_ssl() till after initialization of logging
subsystem.
vio/viosslfactories.c:
Define error strings, provide an access method for these
strings, and maintain an error parameter in several funcs
to return the error (if any) to the caller.
The problem is that the read and write methods of the shared
memory transport (protocol) didn't react to asynchornous close
events, which could lead to a lock up as the client would wait
(until time out) for a server response that will never come.
The solution is to also wait for close events while waiting
for I/O from or to the server.
Bug report and patch submitted by: Armin Schöffmann
The problem is that the read and write methods of the shared
memory transport (protocol) didn't react to asynchronous close
events, which could lead to a lock up as the client would wait
(until time out) for a server response that will never come.
The solution is to also wait for close events while waiting
for I/O from or to the server.
mysql-test/r/shm.result:
Add test case result for Bug#33899
mysql-test/t/shm.test:
Add test case for Bug#33899
vio/viosocket.c:
Also wait for close events.
This is a backport of code from MySQL 6.0 with cleanups and extensions
The following new options are supported
configure options:
--with-libevent ; Enable use of libevent, which is needed for pool of threads
mysqld options:
--thread-handling=pool-of-threads ; Use a pool of threads to handle queries
--thread-pool-size=# ; Define how many threads should be created to handle all queries
--extra-port=# ; Extra tcp port that uses the old one-thread-per-connection method
--extra-max-connections=# ; Number of connections to accept to 'extra-port'
--test-ignore-wrong-options ; Ignore setting an enum value to a wrong option (for mysql-test-run)
BUILD/SETUP.sh:
Added libevents (and thus pool-of-threads) to max builds
CMakeLists.txt:
Added libevent
Makefile.am:
Added libevents
config/ac-macros/libevent.m4:
Libevent code for configure
config/ac-macros/libevent_configure.m4:
Libevent code for configure
configure.in:
Added libevents
dbug/dbug.c:
Added _db_is_pushed(); Needed for pool-of-threads code
extra/Makefile.am:
Added libevents
extra/libevent:
Libevent initial code
extra/libevent/CMakeLists.txt:
Libevent initial code
extra/libevent/Makefile.am:
Libevent initial code
extra/libevent/README:
Libevent initial code
extra/libevent/WIN32-Code:
Libevent initial code
extra/libevent/WIN32-Code/config.h:
Libevent initial code
extra/libevent/WIN32-Code/misc.c:
Libevent initial code
extra/libevent/WIN32-Code/misc.h:
Libevent initial code
extra/libevent/WIN32-Code/tree.h:
Libevent initial code
extra/libevent/WIN32-Code/win32.c:
Libevent initial code
extra/libevent/buffer.c:
Libevent initial code
extra/libevent/compat:
Libevent initial code
extra/libevent/compat/sys:
Libevent initial code
extra/libevent/compat/sys/_time.h:
Libevent initial code
extra/libevent/compat/sys/queue.h:
Libevent initial code
extra/libevent/compat/sys/tree.h:
Libevent initial code
extra/libevent/devpoll.c:
Libevent initial code
extra/libevent/epoll.c:
Libevent initial code
extra/libevent/epoll_sub.c:
Libevent initial code
extra/libevent/evbuffer.c:
Libevent initial code
extra/libevent/evdns.c:
Libevent initial code
extra/libevent/evdns.h:
Libevent initial code
extra/libevent/event-config.h:
Libevent initial code
extra/libevent/event-internal.h:
Libevent initial code
extra/libevent/event.c:
Libevent initial code
extra/libevent/event.h:
Libevent initial code
extra/libevent/event_tagging.c:
Libevent initial code
extra/libevent/evhttp.h:
Libevent initial code
extra/libevent/evport.c:
Libevent initial code
extra/libevent/evrpc-internal.h:
Libevent initial code
extra/libevent/evrpc.c:
Libevent initial code
extra/libevent/evrpc.h:
Libevent initial code
extra/libevent/evsignal.h:
Libevent initial code
extra/libevent/evutil.c:
Libevent initial code
extra/libevent/evutil.h:
Libevent initial code
extra/libevent/http-internal.h:
Libevent initial code
extra/libevent/http.c:
Libevent initial code
extra/libevent/kqueue.c:
Libevent initial code
extra/libevent/log.c:
Libevent initial code
extra/libevent/log.h:
Libevent initial code
extra/libevent/min_heap.h:
Libevent initial code
extra/libevent/poll.c:
Libevent initial code
extra/libevent/select.c:
Libevent initial code
extra/libevent/signal.c:
Libevent initial code
extra/libevent/strlcpy-internal.h:
Libevent initial code
extra/libevent/strlcpy.c:
Libevent initial code
include/config-win.h:
Libevent support
include/my_dbug.h:
ADded _db_is_pushed
include/mysql.h.pp:
Update to handle new prototypes
include/typelib.h:
Split find_type_or_exit() into two functions
include/violite.h:
Added vio_is_pending()
libmysqld/Makefile.am:
Added libevent
mysql-test/include/have_pool_of_threads.inc:
Added test for pool-of-threads
mysql-test/mysql-test-run.pl:
Don't abort based on time and don't retry test cases when run under --gdb or --debug
mysql-test/r/crash_commit_before.result:
USE GLOBAL for debug variable
mysql-test/r/have_pool_of_threads.require:
Added test for pool-of-threads
mysql-test/r/pool_of_threads.result:
Added test for pool-of-threads
mysql-test/r/subselect_debug.result:
USE GLOBAL for debug variable
mysql-test/t/crash_commit_before.test:
USE GLOBAL for debug variable
mysql-test/t/merge-big.test:
USE GLOBAL for debug variable
mysql-test/t/pool_of_threads-master.opt:
Added test for pool-of-threads
mysql-test/t/pool_of_threads.test:
Added test for pool-of-threads
mysys/typelib.c:
Split find_type_or_exit() into find_type_with_warning()
sql/Makefile.am:
Added libevent
sql/handler.cc:
Indentation fix.
Fixed memory loss bug
Fixed crash on exit when handler plugin failed
sql/mysql_priv.h:
Added extra_max_connections and mysqld_extra_port
Added extern functions from sql_connect.cc
sql/mysqld.cc:
Added support for new mysqld options
Added code for 'extra-port' and 'extra-max-connections'
Split some functions into smaller pieces to be able to reuse code
Added code for test-ignore-wrong-options
sql/scheduler.cc:
Updated schduler code from MySQL 6.0
sql/scheduler.h:
Updated schduler code from MySQL 6.0
sql/set_var.cc:
Added support for changing "extra_max_connections"
sql/sql_class.cc:
Iniitalize thread schduler options in THD
sql/sql_class.h:
Added to extra_port and scheduler to 'THD'
sql/sql_connect.cc:
Use thd->schduler to check number of connections and terminate connection
Made some local functions global (for scheduler.cc)
vio/viosocket.c:
Added 'vio_pending', needed for scheduler..c
- Remove bothersome warning messages. This change focuses on the warnings
that are covered by the ignore file: support-files/compiler_warnings.supp.
- Strings are guaranteed to be max uint in length
