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Revert thread_local stuff

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Unfortunatly accessing thread local variable
is much slower than object data (see previous
patch log msg), so we have to revert to old code
to avoid speed regression.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-04-06 18:36:46 +01:00
parent b1f57e92ce
commit c2fc80e5d1
10 changed files with 42 additions and 40 deletions
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14
src/thread.cpp
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@@ -28,22 +28,17 @@
using namespace Search;
ThreadsManager Threads; // Global object
THREAD_LOCAL Thread* this_thread; // Thread local variable
namespace { extern "C" {
// start_routine() is the C function which is called when a new thread
// is launched. It is a wrapper to member function pointed by start_fn.
long start_routine(Thread* th) {
this_thread = th; // Save pointer into thread local storage
(th->*(th->start_fn))();
return 0;
}
long start_routine(Thread* th) { (th->*(th->start_fn))(); return 0; }
} }
// Thread c'tor starts a newly-created thread of execution that will call
// the idle loop function pointed by start_fn going immediately to sleep.
@@ -210,7 +205,6 @@ void ThreadsManager::init() {
lock_init(splitLock);
timer = new Thread(&Thread::timer_loop);
threads.push_back(new Thread(&Thread::main_loop));
this_thread = main_thread(); // Use main thread's resources
read_uci_options();
}
@@ -313,7 +307,7 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta,
assert(beta <= VALUE_INFINITE);
assert(depth > DEPTH_ZERO);
Thread* master = this_thread;
Thread* master = pos.this_thread();
if (master->splitPointsCnt >= MAX_SPLITPOINTS_PER_THREAD)
return bestValue;
@@ -440,7 +434,7 @@ void ThreadsManager::start_searching(const Position& pos, const LimitsType& limi
Signals.stopOnPonderhit = Signals.firstRootMove = false;
Signals.stop = Signals.failedLowAtRoot = false;
RootPosition = pos;
RootPosition.copy(pos, main_thread());
Limits = limits;
RootMoves.clear();