Marco Costalba 51e8efdab5 Fix subtle race with slave allocation ...

When allocating a slave we set both is_searching
and splitPoint under lock protection.

Unfortunatly the order in which the variables are
set is not defined. This article was very clarifying:

http://software.intel.com/en-us/blogs/2007/11/30/volatile-almost-useless-for-multi-threaded-programming/

So when in idle loop we test for is_searching and then
access splitPoint, it could happen that splitPoint is still
not updated leading to a possible crash.

Fix the race lock protecting splitPoint access.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

2012-01-31 20:19:25 +01:00

..

benchmark.cpp

Move struct RootMove to Search namespace

2012-01-14 14:22:34 +01:00

bitbase.cpp

Reformat kpk bitbase

2012-01-30 19:19:47 +01:00

bitboard.cpp

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

bitboard.h

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

bitcount.h

Unify BitCountType selection

2011-12-31 10:46:14 +01:00

book.cpp

Fix a warning under gcc

2012-01-03 19:01:47 +01:00

book.h

Simplify Book APIs

2012-01-01 14:46:18 +01:00

endgame.cpp

Remove unused #include lines

2012-01-19 00:48:53 +08:00

endgame.h

Use operator~ to flip colors and squares

2012-01-12 19:37:44 +01:00

evaluate.cpp

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

evaluate.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00

history.h

Use Windows threads library with mingw

2012-01-25 07:32:31 +01:00

lock.h

Use Windows threads library with mingw

2012-01-25 07:32:31 +01:00

main.cpp

Remove unused #include lines

2012-01-19 00:48:53 +08:00

Makefile

Do not require -lpthread when linking in mingw

2012-01-27 19:41:24 +01:00

material.cpp

Fix compile on HP-UX 11's HP's C++

2012-01-07 00:04:08 +01:00

material.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00

misc.cpp

Use Windows threads library with mingw

2012-01-25 07:32:31 +01:00

misc.h

Simplify locking usage

2012-01-23 20:30:19 +01:00

move.cpp

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

movegen.cpp

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

movegen.h

Rename NON_CAPTURE to QUIET

2012-01-22 00:42:59 +01:00

movepick.cpp

Order bad captures by MVV/LVA

2012-01-24 07:12:19 +01:00

movepick.h

Order bad captures by MVV/LVA

2012-01-24 07:12:19 +01:00

pawns.cpp

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

pawns.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00

position.cpp

Bitwise operator overloads between Bitboard and Square

2012-01-29 10:59:50 +01:00

position.h

Unify some template specializations

2012-01-14 23:11:59 +01:00

psqtab.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00

rkiss.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00

search.cpp

Fix subtle race with slave allocation

2012-01-31 20:19:25 +01:00

search.h

Move struct RootMove to Search namespace

2012-01-14 14:22:34 +01:00

thread.cpp

Fix subtle race with slave allocation

2012-01-31 20:19:25 +01:00

thread.h

Fix subtle race with slave allocation

2012-01-31 20:19:25 +01:00

timeman.cpp

Remove unused #include lines

2012-01-19 00:48:53 +08:00

timeman.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00

tt.cpp

Rename ValueType to Bound

2012-01-27 19:49:38 +01:00

tt.h

Rename ValueType to Bound

2012-01-27 19:49:38 +01:00

types.h

Replace clear_bit() with xor_bit()

2012-01-29 09:38:40 +01:00

uci.cpp

Remove unused #include lines

2012-01-19 00:48:53 +08:00

ucioption.cpp

Restore development version

2012-01-14 15:27:24 +01:00

ucioption.h

Update copyright year to 2012

2011-12-30 13:52:16 +01:00