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Problem Statement
=========
Fix various issues when building MySQL with Visual Studio 2015.
Fix:
=======
- Visual Studio 2015 adds support for timespec. Add check and
related code to use this and only use our replacement if
timespec is not defined.
- Rename lfind/lsearch to my* to avoid redefinition problems.
- Set default value for TMPDIR to "" on Windows as P_tmpdir
no longer exists.
- using VS definition of snprintf if available
- tzname are now renamed to _tzname.
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Bug#68338 RFE: make tmpdir a build-time configurable option
Background: Some distributions use tmpfs for mounting /tmp by
default, which has some advantages, but brings also new
issues. Fedora started using tmpfs on /tmp in version 18 for
example. If not configured otherwise in my.cnf, MySQL uses
system's constant P_tmpdir expanded to /tmp on Linux. This can
introduce some problems with limited space in /tmp and also some
data loss in case of replication slave [1].
In case distributions would like to use /var/tmp, which should be
better for MySQL purposes, then we have to patch the source or
change tmpdir option in my.cnf, which is however not updated in
case it has already existed.
Thus, it would be useful to be able to specify default tmpdir
path using a configure option, while using P_tmpdir in case it is
not defined explicitly.
Based on a contribution from Honza Horak
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FUNCTION 'PTHREAD_INIT'
The problem was that compilation would fail with a warning:
Implicit declaration of function 'pthread_init' if MySQL was
compiled on OS X 10.7 (Lion). The reason was that pthread_init()
is now part of an internal OS X pthread library so it was found
by CMake.
This patch fixes the problem by removing HAVE_PTHREAD_INIT and
related code. pthread_init() was specific to MIT-pthreads which
has not been supported since 4.1 and was therefore no longer
relevant.
No test case added.
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When MySQL converted from autotools to CMake, the
preprocessor symbol USE_SYMDIR was omitted by mistake.
Without this symbol, the code for checking .sym files
is not built.
This patch defines USE_SYMDIR when built on MS Windows.
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and 'THREAD_SAFE_CLIENT'.
As of MySQL 5.5, we no longer support non-threaded
builds. This patch removes all references to the
obsolete THREAD and THREAD_SAFE_CLIENT preprocessor
symbols. These were used to distinguish between
threaded and non-threaded builds.
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instead of hacking a custom ADD_DEFINITIONS().
Approved by: Kent Boortz (via IRC)
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detector" that doesn't introduce bug #56715 "Concurrent
transactions + FLUSH result in sporadical unwarranted
deadlock errors".
Deadlock could have occurred when workload containing a mix
of DML, DDL and FLUSH TABLES statements affecting the same
set of tables was executed in a heavily concurrent environment.
This deadlock occurred when several connections tried to
perform deadlock detection in the metadata locking subsystem.
The first connection started traversing wait-for graph,
encountered a sub-graph representing a wait for flush, acquired
LOCK_open and dived into sub-graph inspection. Then it
encountered sub-graph corresponding to wait for metadata lock
and blocked while trying to acquire a rd-lock on
MDL_lock::m_rwlock, since some,other thread had a wr-lock on it.
When this wr-lock was released it could have happened (if there
was another pending wr-lock against this rwlock) that the rd-lock
from the first connection was left unsatisfied but at the same
time the new rd-lock request from the second connection sneaked
in and was satisfied (for this to be possible the second
rd-request should come exactly after the wr-lock is released but
before pending the wr-lock manages to grab rwlock, which is
possible both on Linux and in our own rwlock implementation).
If this second connection continued traversing the wait-for graph
and encountered a sub-graph representing a wait for flush it tried
to acquire LOCK_open and thus the deadlock was created.
The previous patch tried to workaround this problem by not
allowing the deadlock detector to lock LOCK_open mutex if
some other thread doing deadlock detection already owns it
and current search depth is greater than 0. Instead deadlock
was reported. As a result it has introduced bug #56715.
This patch solves this problem in a different way.
It introduces a new rw_pr_lock_t implementation to be used
by MDL subsystem instead of one based on Linux rwlocks or
our own rwlock implementation. This new implementation
never allows situation in which an rwlock is rd-locked and
there is a blocked pending rd-lock. Thus the situation which
has caused this bug becomes impossible with this implementation.
Due to fact that this implementation is optimized for
wr-lock/unlock scenario which is most common in the MDL
subsystem it doesn't introduce noticeable performance
regressions in sysbench tests. Moreover it significantly
improves situation for POINT_SELECT test when many
connections are used.
No test case is provided as this bug is very hard to repeat
in MTR environment but is repeatable with the help of RQG
tests.
This patch also doesn't include a test for bug #56715
"Concurrent transactions + FLUSH result in sporadical
unwarranted deadlock errors" as it takes too much time to
be run as part of normal test-suite runs.
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Merged the implementation to a new base tree.
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* Fixed obvious errors (HAVE_BROKEN_PREAD is not true for on any
of systems we use, definitely not on HPUX)
* Remove other junk flags for OSX and HPUX
* Avoid checking type sizes in universal builds on OSX, again
(CMake2.8.0 fails is different architectures return different results)
* Do not compile template instantiation stuff unless
EXPLICIT_TEMPLATE_INSTANTIATION is used.
* Some cleanup (make gen_lex_hash simpler, avoid dependencies)
* Exclude some unused files from compilation (strtol.c etc)
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(resolving conflicts in mysql-test/suite/rpl/t/rpl_sync-slave.opt and
configure.cmake)
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Conflicts:
- scripts/CMakeLists.txt
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cmake/build_configurations/mysql_release.cmake
- Corrected spelling ENABLE_LOCAL_INFILE => ENABLED_LOCAL_INFILE
- In addition to "RelWithDebInfo", set target "Release" and "Debug"
- Set Debug flags
- Enabled SSL on Mac OS X
- For gcc builds, set RELEASE and DEBUG flags as well
- For g++ builds, added "-fno-implicit-templates"
- Use "-O" (gcc -O1) for optimized binaries, as "DEBUG" in out case
is more about enabling trace support to the server, no optimization
makes binaries too slow to be practical to reproduce problems
cmake/os/WindowsCache.cmake
- Removed unused HAVE_SYS_IOCTL
config.h.cmake
- Added header checks and missing defines
- Removed unused HAVE_SYS_IOCTL
- Grouped and uncommented some HAVE_* that are really not
defines, but internal variables used in the CMake setup,
- Added hard coded flags for HP-UX and Mac OS X
configure.cmake
- Added header checks and missing defines
- Removed unused HAVE_SYS_IOCTL
- "sys/dir.h" test needs "sys/types.h"
- Corrected syntax for "sys/ptem.h" test
- Don't exclude test for some types if Mac OS X, harmless
to do the test and we want the HAVE_<type> settings
- Added hard coded flags for HP-UX and Mac OS X
extra/yassl/CMakeLists.txt
extra/yassl/taocrypt/CMakeLists.txt
- Added missing source file "template_instnt.cpp"
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- Reverted a faulty change of MY_SEARCH_LIBS
- Added the proper change for MY_SEARCH_LIBS and HAVE_<libname>
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- Set SIZEOF_VOIDP the same way as others
- Unindent the no Mac OS settings, to let the checker scripts find the lines
- Removed duplicate SIZEOF_SIZE_T setting
- Added missing value for HAVE_CHARSET_ascii
configure.cmake
- Added HAVE_ prefix to library names, like HAVE_LIBM
- Set HAVE_CXXABI_H if header is found, HAVE_ABI_CXA_DEMANGLE
controls if useful
- Set SIZEOF_VOIDP the same way as others
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- Added missing HAVE_SYS_TIMES_H, HAVE_SYS_TIME_H, HAVE_TIME_H,
HAVE_TIME and HAVE_TIMES
- Removed most #if constructs, keep logic in "configure.cmake"
- Use space after # if inside #if, for consistency
configure.cmake
- Added MY_CHECK_TYPE_SIZE function that sets both SIZEOF_* and HAVE_*
- If "sys/stream.h" exists, include it before "sys/ptem.h" in test
- Set VOID_SIGHANDLER if RETSIGTYPE is set to "void"
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Try to fix ia64/icc builds.
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Implement WITH_VALGRIND for the CMake build.
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address" error).
The thing is that on some platforms (e.g. Mac OS X) sockaddr_in / sockaddr_in6
contain a non-standard field (sin_len / sin6_len), that must be set.
The problem was that only standard fields were set, thus getnameinfo() returned
EAI_SYSTEM instead of EAI_NONAME.
The fix is to introduce configure-time checks (for GNU auto-tools and CMake) for
those additional fields and to set them if they are available.
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- Update/fix file layouts for each package type, add new types for
native package formats including deb, rpm and svr4.
- Build all plugins, including debug versions
- Update compiler flags to match current release
- Add missing @VAR@ expansions
- Install correct mysqclient library symlinks
- Fix icc/ia64 builds
- Fix install of libmysqld-debug
- Don't include mysql_embedded
- Remove unpackaged manual pages to avoid missing files warnings
- Don't install mtr's test suite
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on Windows".
On platforms where read-write lock implementation does not
prefer readers by default (Windows, Solaris) server might
have deadlocked while detecting MDL deadlock.
MDL deadlock detector relies on the fact that read-write
locks which are used in its implementation prefer readers
(see new comment for MDL_lock::m_rwlock for details).
So far MDL code assumed that default implementation of
read/write locks for the system has this property.
Indeed, this turned out ot be wrong, for example, for
Windows or Solaris. Thus MDL deadlock detector might have
deadlocked on these systems.
This fix simply adds portable implementation of read/write
lock which prefer readers and changes MDL code to use this
new type of synchronization primitive.
No test case is added as existing rqg_mdl_stability test can
serve as one.
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irrelevant anyway
Add cached variable WITH_XXX_STORAGE_ENGINE for dynamic plugins that can be static or
dynamic.
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using cmake option INSTALL_LAYOUT=STANDALONE would produce the layout as in
tar.gz or zip packages.
INSTALL_LAYOUT=UNIX will produce unixish install layout (with mysqld being in sbin subdirectory , libs in lib/mysql etc). This layout is used for RPM packages.
Subtle differences in both packages unfortunately lead to the need to recompile MySQL to use with other package type - as otherwise for example default plugins or data directories would be wrong set.
There are numerous other variables that allow fine-tuning packaging layout. (INSTALL_BINDIR, INSTALL_LIBDIR , INSTALL_PLUGINDIR etc).
This options are different from autotools as they do not expect full paths to directories, but only subdirectory of CMAKE_INSTALL_PREFIX.
There are 2 special options that expect full directory paths
- MYSQL_DATADIR that defines default MYSQL data directory (autotools equivalent
is --localstatedir)
- SYSCONFDIR can be added to search my.cnf search path (autotools equivalent is --sysconfdir)
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WORDS_BIGENDIAN was wrongly defined to 1
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for example
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architectures are used
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