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Remove limit of minimumSplitDepth

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There is no reason why an user cannot set
it at a value less than 4.

No functional change.
This commit is contained in:
Marco Costalba 2014-03-01 23:22:14 +01:00
parent 3d8c0f16c2
commit 3e5470d88f
1 changed files with 6 additions and 9 deletions
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15
src/thread.cpp
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@ -59,7 +59,7 @@ namespace {
} }
// ThreadBase::notify_one() wakes up the thread when there is some work to do // notify_one() wakes up the thread when there is some work to do
void ThreadBase::notify_one() { void ThreadBase::notify_one() {
@ -69,7 +69,7 @@ void ThreadBase::notify_one() {
} }
// ThreadBase::wait_for() set the thread to sleep until condition 'b' turns true // wait_for() set the thread to sleep until condition 'b' turns true
void ThreadBase::wait_for(volatile const bool& b) { void ThreadBase::wait_for(volatile const bool& b) {
@ -92,7 +92,7 @@ Thread::Thread() /* : splitPoints() */ { // Value-initialization bug in MSVC
} }
// Thread::cutoff_occurred() checks whether a beta cutoff has occurred in the // cutoff_occurred() checks whether a beta cutoff has occurred in the
// current active split point, or in some ancestor of the split point. // current active split point, or in some ancestor of the split point.
bool Thread::cutoff_occurred() const { bool Thread::cutoff_occurred() const {
@ -219,12 +219,9 @@ void ThreadPool::read_uci_options() {
assert(requested > 0); assert(requested > 0);
// Value 0 has a special meaning: We determine the optimal minimum split depth // If zero (default) then set best minimum split depth automatically
// automatically. Anyhow the minimumSplitDepth should never be under 4 plies.
if (!minimumSplitDepth) if (!minimumSplitDepth)
minimumSplitDepth = (requested < 8 ? 4 : 7) * ONE_PLY; minimumSplitDepth = requested < 8 ? 4 * ONE_PLY : 7 * ONE_PLY;
else
minimumSplitDepth = std::max(4 * ONE_PLY, minimumSplitDepth);
while (size() < requested) while (size() < requested)
push_back(new_thread<Thread>()); push_back(new_thread<Thread>());
@ -237,7 +234,7 @@ void ThreadPool::read_uci_options() {
} }
// slave_available() tries to find an idle thread which is available as a slave // available_slave() tries to find an idle thread which is available as a slave
// for the thread 'master'. // for the thread 'master'.
Thread* ThreadPool::available_slave(const Thread* master) const { Thread* ThreadPool::available_slave(const Thread* master) const {