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Retire OLD_LOCKS option

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And make CRITICAL_SECTION locks the only option for Windows.
This guarantees backward compatibility with all the Windows
versions (even XP and older) and an hassle free experience
when compiling for Windows. Tests performed by Ingo and
reported on talkchess confirm there is no speed penalty
against the most modern SRW locks:

http://www.talkchess.com/forum/viewtopic.php?t=41835&start=20

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-01-07 11:17:10 +01:00
parent 6482ce2bb2
commit 0026c88b3a
2 changed files with 3 additions and 27 deletions
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5
src/types.h
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@@ -34,11 +34,6 @@
/// -DUSE_POPCNT | Add runtime support for use of popcnt asm-instruction. Works
/// | only in 64-bit mode. For compiling requires hardware with
/// | popcnt support.
///
/// -DOLD_LOCKS | Under Windows are used the fast Slim Reader/Writer (SRW)
/// | Locks and Condition Variables: these are not supported by
/// | Windows XP and older, to compile for those platforms you
/// | should enable OLD_LOCKS.
#include <climits>
#include <cstdlib>