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18 commits

Author SHA1 Message Date
Sergei Golubchik
e695db0f2d MDEV-7437 remove suport for "atomics" with rwlocks 2015-01-13 10:15:21 +01:00
Vladislav Vaintroub
257fd9d3d9 MDEV-417 - fix typo that prevented use of atomic instructions on Windows 
use correct macro for Microsoft compiler. It is _MSC_VER , not _MSV_VER
 2012-07-30 20:13:23 +02:00
Kent Boortz
02e07e3b51 Updated/added copyright headers 2011-06-30 17:46:53 +02:00
Davi Arnaut
93e38e8a3e Bug#22320: my_atomic-t unit test fails 
Bug#52261: 64 bit atomic operations do not work on Solaris i386
           gcc in debug compilation

One of the various problems was that the source operand to
CMPXCHG8b was marked as a input/output operand, causing GCC
to use the EBX register as the destination register for the
CMPXCHG8b instruction. This could lead to crashes as the EBX
register is also implicitly used by the instruction, causing
the value to be potentially garbaged and a protection fault
once the value is used to access a position in memory.

Another problem was the lack of proper clobbers for the atomic
operations and, also, a discrepancy between the implementations
for the Compare and Set operation. The specific problems are
described and fixed by Kristian Nielsen patches:

Patch: 1

Fix bugs in my_atomic_cas*(val,cmp,new) that *cmp is accessed
after CAS succeds.

In the gcc builtin implementation, problem was that *cmp was
read again after atomic CAS to check if old *val == *cmp;
this fails if CAS is successful and another thread modifies
*cmp in-between.

In the x86-gcc implementation, problem was that *cmp was set
also in the case of successful CAS; this means there is a
window where it can clobber a value written by another thread
after successful CAS.

Patch 2:

Add a GCC asm "memory" clobber to primitives that imply a
memory barrier.

This signifies to GCC that any potentially aliased memory
must be flushed before the operation, and re-read after the
operation, so that read or modification in other threads of
such memory values will work as intended.

In effect, it makes these primitives work as memory barriers
for the compiler as well as the CPU. This is better and more
correct than adding "volatile" to variables.

include/atomic/gcc_builtins.h:
  Do not read from *cmp after the operation as it might be
  already gone if the operation was successful.
include/atomic/nolock.h:
  Prefer system provided atomics over the broken x86 asm.
include/atomic/x86-gcc.h:
  Do not mark source operands as input/output operands.
  Add proper memory clobbers.
include/my_atomic.h:
  Add notes about my_atomic_add and my_atomic_cas behaviors.
unittest/mysys/my_atomic-t.c:
  Remove work around, if it fails, there is either a problem
  with the atomic operations code or the specific compiler
  version should be black-listed.
 2010-07-23 09:37:10 -03:00
Davi Arnaut
cd41cd953d Bug#22320: my_atomic-t unit test fails 
The atomic operations implementation on 5.1 has a few problems,
which might cause tests to abort randomly. Since no code in 5.1
uses atomic operations, simply remove the code.
 2010-07-05 09:00:39 -03:00
Sergei Golubchik
3bfb8797d0 fix atomic/solaris.h to conform 
remove duplicated boilerplate code
 2009-12-23 09:27:41 +01:00
Mikael Ronstrom
3b103b4897 Increase probability of correct atomics implementation by choosing stable implementations first 2009-12-19 08:54:05 +01:00
Mikael Ronstrom
eddd1a94a7 Make choices of atomic implementation based on highest stability 2009-12-19 08:46:37 +01:00
Mikael Ronstrom
45e62fba06 Fixed Solaris Atomics build issues 2009-12-18 11:15:21 +01:00
Marc Alff
382ae22290 WL#2595 kernel-independent atomic operations 
Backport from 6.0.14 to 5.6.0

Original code from Sergei Golubchik
 2009-11-17 17:11:32 -07:00
Luis Soares
f1bb8c3c55 manual merge: mysql-5.1-rep+2-delivery1 --> mysql-5.1-rpl-merge 
Conflicts
=========

Text conflict in .bzr-mysql/default.conf
Text conflict in libmysqld/CMakeLists.txt
Text conflict in libmysqld/Makefile.am
Text conflict in mysql-test/collections/default.experimental
Text conflict in mysql-test/extra/rpl_tests/rpl_row_sp006.test
Text conflict in mysql-test/suite/binlog/r/binlog_tmp_table.result
Text conflict in mysql-test/suite/rpl/r/rpl_loaddata.result
Text conflict in mysql-test/suite/rpl/r/rpl_loaddata_fatal.result
Text conflict in mysql-test/suite/rpl/r/rpl_row_create_table.result
Text conflict in mysql-test/suite/rpl/r/rpl_row_sp006_InnoDB.result
Text conflict in mysql-test/suite/rpl/r/rpl_stm_log.result
Text conflict in mysql-test/suite/rpl_ndb/r/rpl_ndb_circular_simplex.result
Text conflict in mysql-test/suite/rpl_ndb/r/rpl_ndb_sp006.result
Text conflict in mysql-test/t/mysqlbinlog.test
Text conflict in sql/CMakeLists.txt
Text conflict in sql/Makefile.am
Text conflict in sql/log_event_old.cc
Text conflict in sql/rpl_rli.cc
Text conflict in sql/slave.cc
Text conflict in sql/sql_binlog.cc
Text conflict in sql/sql_lex.h
21 conflicts encountered.

NOTE
====
 mysql-5.1-rpl-merge has been made a mirror of mysql-next-mr:
 - "mysql-5.1-rpl-merge$ bzr pull ../mysql-next-mr"

 This is the first cset (merge/...) committed after pulling 
 from mysql-next-mr.
 2009-10-22 23:30:28 +01:00
Mats Kindahl
d47710c8dc WL#5016: Fix header file include guards 
Adding header include file guards to files that are missing such.
 2009-09-23 23:32:31 +02:00
Mikael Ronstrom
e82dac8dab Performance patch: Mysql atomic patch 2008-10-13 22:03:12 +02:00
unknown
26af3c7e35 Bug#33728 Atomic builtins 
Use compiler provided atomic builtins as a 'backend' for
MySQL's atomic primitives. The builtins are available on
a handful of platforms and compilers.


configure.in:
  Check if the compiler provides atomic builtins and
  that __sync_lock_test_and_set stores the correct value.
include/atomic/nolock.h:
  Use the atomic builtins if available.
include/atomic/gcc_builtins.h:
  Implement the atomic ADD, SWAP, CAS, STORE (or operation
  optimized away) and LOAD primitives using atomic builtins
  provided by the compiler.
 2008-01-11 20:34:36 -02:00
unknown
92e68d49d7 Many files: 
Changed header to GPL version 2 only


client/mysqlslap.c:
  Changed header to GPL version 2 only
include/atomic/nolock.h:
  Changed header to GPL version 2 only
include/atomic/rwlock.h:
  Changed header to GPL version 2 only
include/atomic/x86-gcc.h:
  Changed header to GPL version 2 only
include/atomic/x86-msvc.h:
  Changed header to GPL version 2 only
include/my_atomic.h:
  Changed header to GPL version 2 only
include/my_trie.h:
  Changed header to GPL version 2 only
include/my_vle.h:
  Changed header to GPL version 2 only
include/mysql/plugin.h:
  Changed header to GPL version 2 only
mysys/my_atomic.c:
  Changed header to GPL version 2 only
mysys/my_getncpus.c:
  Changed header to GPL version 2 only
mysys/my_memmem.c:
  Changed header to GPL version 2 only
mysys/my_vle.c:
  Changed header to GPL version 2 only
mysys/trie.c:
  Changed header to GPL version 2 only
plugin/Makefile.am:
  Changed header to GPL version 2 only
server-tools/instance-manager/IMService.h:
  Changed header to GPL version 2 only
server-tools/instance-manager/WindowsService.h:
  Changed header to GPL version 2 only
server-tools/instance-manager/exit_codes.h:
  Changed header to GPL version 2 only
server-tools/instance-manager/user_management_commands.h:
  Changed header to GPL version 2 only
sql/authors.h:
  Changed header to GPL version 2 only
sql/contributors.h:
  Changed header to GPL version 2 only
sql/event_data_objects.cc:
  Changed header to GPL version 2 only
sql/event_data_objects.h:
  Changed header to GPL version 2 only
sql/event_db_repository.cc:
  Changed header to GPL version 2 only
sql/event_db_repository.h:
  Changed header to GPL version 2 only
sql/event_queue.cc:
  Changed header to GPL version 2 only
sql/event_queue.h:
  Changed header to GPL version 2 only
sql/event_scheduler.cc:
  Changed header to GPL version 2 only
sql/event_scheduler.h:
  Changed header to GPL version 2 only
sql/events.cc:
  Changed header to GPL version 2 only
sql/events.h:
  Changed header to GPL version 2 only
sql/ha_ndbcluster_binlog.cc:
  Changed header to GPL version 2 only
sql/ha_ndbcluster_binlog.h:
  Changed header to GPL version 2 only
sql/ha_ndbcluster_tables.h:
  Changed header to GPL version 2 only
sql/ha_partition.cc:
  Changed header to GPL version 2 only
sql/ha_partition.h:
  Changed header to GPL version 2 only
sql/item_xmlfunc.cc:
  Changed header to GPL version 2 only
sql/item_xmlfunc.h:
  Changed header to GPL version 2 only
sql/log.h:
  Changed header to GPL version 2 only
sql/partition_element.h:
  Changed header to GPL version 2 only
sql/partition_info.cc:
  Changed header to GPL version 2 only
sql/partition_info.h:
  Changed header to GPL version 2 only
sql/rpl_filter.cc:
  Changed header to GPL version 2 only
sql/rpl_filter.h:
  Changed header to GPL version 2 only
sql/rpl_injector.cc:
  Changed header to GPL version 2 only
sql/rpl_injector.h:
  Changed header to GPL version 2 only
sql/rpl_mi.cc:
  Changed header to GPL version 2 only
sql/rpl_mi.h:
  Changed header to GPL version 2 only
sql/rpl_rli.cc:
  Changed header to GPL version 2 only
sql/rpl_rli.h:
  Changed header to GPL version 2 only
sql/rpl_tblmap.cc:
  Changed header to GPL version 2 only
sql/rpl_tblmap.h:
  Changed header to GPL version 2 only
sql/rpl_utility.cc:
  Changed header to GPL version 2 only
sql/rpl_utility.h:
  Changed header to GPL version 2 only
sql/sql_binlog.cc:
  Changed header to GPL version 2 only
sql/sql_partition.cc:
  Changed header to GPL version 2 only
sql/sql_partition.h:
  Changed header to GPL version 2 only
sql/sql_plugin.cc:
  Changed header to GPL version 2 only
sql/sql_plugin.h:
  Changed header to GPL version 2 only
sql/sql_servers.cc:
  Changed header to GPL version 2 only
sql/sql_servers.h:
  Changed header to GPL version 2 only
sql/sql_tablespace.cc:
  Changed header to GPL version 2 only
sql/sql_yacc.yy.bak:
  Changed header to GPL version 2 only
storage/Makefile.am:
  Changed header to GPL version 2 only
storage/archive/Makefile.am:
  Changed header to GPL version 2 only
storage/blackhole/Makefile.am:
  Changed header to GPL version 2 only
storage/csv/Makefile.am:
  Changed header to GPL version 2 only
storage/example/Makefile.am:
  Changed header to GPL version 2 only
storage/federated/Makefile.am:
  Changed header to GPL version 2 only
storage/innobase/handler/Makefile.am:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/AllocNodeId.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/CreateFilegroup.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/CreateFilegroupImpl.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/CreateObj.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/DictObjOp.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/DihFragCount.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/DropFilegroup.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/DropFilegroupImpl.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/DropObj.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/Extent.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/LgmanContinueB.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/PgmanContinueB.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/RestoreContinueB.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/RestoreImpl.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/RouteOrd.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/kernel/signaldata/TsmanContinueB.hpp:
  Changed header to GPL version 2 only
storage/ndb/include/ndbapi/NdbIndexStat.hpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/mgmapi_logevent/mgmapi_logevent.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/mgmapi_logevent_dual/mgmapi_logevent_dual.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_async/ndbapi_async.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_async1/ndbapi_async1.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_event/ndbapi_event.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_retries/ndbapi_retries.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_scan/ndbapi_scan.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_simple/ndbapi_simple.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_simple_dual/ndbapi_simple_dual.cpp:
  Changed header to GPL version 2 only
storage/ndb/ndbapi-examples/ndbapi_simple_index/ndbapi_simple_index.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbdih/printSysfile.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtup/DbtupDiskAlloc.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtup/DbtupVarAlloc.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtup/Undo_buffer.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtup/Undo_buffer.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtup/tuppage.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtup/tuppage.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/dbtux/DbtuxStat.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/diskpage.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/lgman.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/lgman.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/pgman.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/pgman.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/print_file.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/record_types.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/restore.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/restore.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/tsman.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/blocks/tsman.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/DLCFifoList.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/DLCHashTable.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/DynArr256.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/DynArr256.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/KeyTable2Ref.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/LinearPool.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/NdbdSuperPool.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/NdbdSuperPool.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/Pool.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/Pool.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/RWPool.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/RWPool.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/Rope.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/SLFifoList.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/WOPool.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/WOPool.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/bench_pool.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/ndbd_malloc_impl.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/kernel/vm/ndbd_malloc_impl.hpp:
  Changed header to GPL version 2 only
storage/ndb/src/mgmsrv/ParamInfo.cpp:
  Changed header to GPL version 2 only
storage/ndb/src/ndbapi/NdbIndexStat.cpp:
  Changed header to GPL version 2 only
storage/ndb/test/ndbapi/testIndexStat.cpp:
  Changed header to GPL version 2 only
storage/ndb/test/tools/listen.cpp:
  Changed header to GPL version 2 only
storage/ndb/tools/restore/ndb_nodegroup_map.h:
  Changed header to GPL version 2 only
strings/my_strchr.c:
  Changed header to GPL version 2 only
unittest/mysys/base64-t.c:
  Changed header to GPL version 2 only
unittest/mysys/bitmap-t.c:
  Changed header to GPL version 2 only
unittest/mysys/my_atomic-t.c:
  Changed header to GPL version 2 only
unittest/mytap/tap.c:
  Changed header to GPL version 2 only
unittest/mytap/tap.h:
  Changed header to GPL version 2 only
win/Makefile.am:
  Changed header to GPL version 2 only
 2006-12-27 02:23:51 +01:00
unknown
948caab031 support for xadd emulation, workaround for Darwin 
include/atomic/nolock.h:
  support for xadd emulation
include/atomic/x86-msvc.h:
  syntax error
include/my_atomic.h:
  support for xadd emulation, cleanup
mysys/my_atomic.c:
  assert
 2006-06-29 15:39:53 +02:00
unknown
d1fb292251 atomic ops: 
my_atomic_XX_t -> intXX, no implicit locking anymore
    simplified framework, support for requested cleanups


dbug/dbug.c:
  compiler warning
include/atomic/nolock.h:
  my_atomic_XX_t -> intXX
include/atomic/rwlock.h:
  my_atomic_XX_t -> intXX, no implicit locking anymore
include/atomic/x86-gcc.h:
  my_atomic_XX_t -> intXX, no implicit locking anymore
include/atomic/x86-msvc.h:
  my_atomic_XX_t -> intXX
  simplified defines
  support for cleanups
include/my_atomic.h:
  my_atomic_XX_t -> intXX, no implicit locking anymore
  simplified framework, support for requested cleanups
unittest/examples/no_plan-t.c:
  compiler warning
unittest/mysys/Makefile.am:
  fix for dependencies
unittest/mysys/my_atomic-t.c:
  my_atomic_XX_t -> intXX, no implicit locking anymore
unittest/mytap/tap.c:
  cosmetic fix
 2006-06-17 16:20:39 +02:00
unknown
8b45817780 WL#2595 - atomic operations 
BitKeeper/etc/ignore:
  Added mysys/test_atomic to the ignore list
 2006-05-31 18:44:09 +02:00