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// Copyright (c) 2006-2018 Maxim Khizhinsky
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
#include "stack_type.h"
namespace {
static size_t s_nPushThreadCount = 4;
static size_t s_nPopThreadCount = 4;
static size_t s_nStackSize = 1000000;
static size_t s_nEliminationSize = 4;
static atomics::atomic<size_t> s_nWorkingProducers( 0 );
class stack_push_pop : public cds_test::stress_fixture
{
protected:
enum thread_type
{
producer_thread,
consumer_thread
};
struct value_type {
size_t nNo;
size_t nThread;
value_type()
: nNo( 0 )
, nThread( 0 )
{}
value_type( size_t n )
: nNo( n )
, nThread( 0 )
{}
};
static size_t const c_nValArraySize = 1024;
template <class Stack>
class Producer: public cds_test::thread
{
typedef cds_test::thread base_class;
public:
Producer( cds_test::thread_pool& pool, Stack& stack, size_t push_count )
: base_class( pool, producer_thread )
, m_stack( stack )
, m_nItemCount( push_count )
, m_nPushError( 0 )
{}
Producer( Producer& src )
: base_class( src )
, m_stack( src.m_stack )
, m_nItemCount( src.m_nItemCount )
, m_nPushError( 0 )
{}
virtual thread * clone()
{
return new Producer( *this );
}
virtual void test()
{
memset( m_arrPush, 0, sizeof( m_arrPush ));
value_type v;
v.nThread = id();
for ( size_t i = 0; i < m_nItemCount; ++i ) {
v.nNo = i % c_nValArraySize;
if ( m_stack.push( v ))
++m_arrPush[v.nNo];
else
++m_nPushError;
}
s_nWorkingProducers.fetch_sub( 1, atomics::memory_order_release );
}
public:
Stack& m_stack;
size_t const m_nItemCount;
size_t m_nPushError;
size_t m_arrPush[c_nValArraySize];
};
template <class Stack>
class Consumer : public cds_test::thread
{
typedef cds_test::thread base_class;
public:
Consumer( cds_test::thread_pool& pool, Stack& stack )
: base_class( pool, consumer_thread )
, m_stack( stack )
, m_nPopCount( 0 )
, m_nPopEmpty( 0 )
, m_nDirtyPop( 0 )
{}
Consumer( Consumer& src )
: base_class( src )
, m_stack( src.m_stack )
, m_nPopCount( 0 )
, m_nPopEmpty( 0 )
, m_nDirtyPop( 0 )
{}
virtual thread * clone()
{
return new Consumer( *this );
}
virtual void test()
{
memset( m_arrPop, 0, sizeof( m_arrPop ));
value_type v;
while ( !( s_nWorkingProducers.load( atomics::memory_order_acquire ) == 0 && m_stack.empty())) {
if ( m_stack.pop( v )) {
++m_nPopCount;
if ( v.nNo < sizeof( m_arrPop ) / sizeof( m_arrPop[0] ))
++m_arrPop[v.nNo];
else
++m_nDirtyPop;
}
else
++m_nPopEmpty;
}
}
public:
Stack& m_stack;
size_t m_nPopCount;
size_t m_nPopEmpty;
size_t m_arrPop[c_nValArraySize];
size_t m_nDirtyPop;
};
protected:
static void SetUpTestCase()
{
cds_test::config const& cfg = get_config("Stack_PushPop");
s_nPushThreadCount = cfg.get_size_t( "PushThreadCount", s_nPushThreadCount );
s_nPopThreadCount = cfg.get_size_t( "PopThreadCount", s_nPopThreadCount );
s_nStackSize = cfg.get_size_t( "StackSize", s_nStackSize );
s_nEliminationSize = cfg.get_size_t( "EliminationSize", s_nEliminationSize );
if ( s_nPushThreadCount == 0 )
s_nPushThreadCount = 1;
if ( s_nPopThreadCount == 0 )
s_nPopThreadCount = 1;
}
//static void TearDownTestCase();
template <typename Stack>
void test( Stack& stack )
{
cds_test::thread_pool& pool = get_pool();
size_t const nPushCount = s_nStackSize / s_nPushThreadCount;
pool.add( new Producer<Stack>( pool, stack, nPushCount ), s_nPushThreadCount );
pool.add( new Consumer<Stack>( pool, stack ), s_nPopThreadCount );
s_nWorkingProducers.store( s_nPushThreadCount );
s_nStackSize = nPushCount * s_nPushThreadCount;
propout() << std::make_pair( "producer_thread_count", s_nPushThreadCount )
<< std::make_pair( "consumer_thread_count", s_nPopThreadCount )
<< std::make_pair( "push_count", s_nStackSize )
;
std::chrono::milliseconds duration = pool.run();
propout() << std::make_pair( "duration", duration );
analyze( stack );
propout() << stack.statistics();
}
template <typename Stack>
void test_elimination( Stack& stack )
{
test( stack );
check_elimination_stat( stack.statistics());
}
void check_elimination_stat( cds::container::treiber_stack::empty_stat const& )
{}
void check_elimination_stat( cds::container::treiber_stack::stat<> const& s )
{
EXPECT_EQ( s.m_PushCount.get() + s.m_ActivePushCollision.get() + s.m_PassivePushCollision.get(), s_nStackSize );
EXPECT_EQ( s.m_PopCount.get() + s.m_ActivePopCollision.get() + s.m_PassivePopCollision.get(), s_nStackSize );
EXPECT_EQ( s.m_PushCount.get(), s.m_PopCount.get());
EXPECT_EQ( s.m_ActivePopCollision.get(), s.m_PassivePushCollision.get());
EXPECT_EQ( s.m_ActivePushCollision.get(), s.m_PassivePopCollision.get());
}
template< class Stack>
void analyze( Stack& /*stack*/ )
{
cds_test::thread_pool& pool = get_pool();
size_t nPushError = 0;
size_t nPopEmpty = 0;
size_t nPopCount = 0;
size_t arrVal[c_nValArraySize];
memset( arrVal, 0, sizeof( arrVal ));
size_t nDirtyPop = 0;
for ( size_t threadNo = 0; threadNo < pool.size(); ++threadNo ) {
cds_test::thread& thread = pool.get( threadNo );
if ( thread.type() == producer_thread ) {
Producer<Stack>& producer = static_cast<Producer<Stack>&>( thread );
nPushError += producer.m_nPushError;
for ( size_t i = 0; i < c_nValArraySize; ++i )
arrVal[i] += producer.m_arrPush[i];
}
else {
ASSERT_EQ( thread.type(), consumer_thread );
Consumer<Stack>& consumer = static_cast<Consumer<Stack>&>(thread);
nPopEmpty += consumer.m_nPopEmpty;
nPopCount += consumer.m_nPopCount;
nDirtyPop += consumer.m_nDirtyPop;
for ( size_t i = 0; i < c_nValArraySize; ++i )
arrVal[i] -= consumer.m_arrPop[i];
}
}
EXPECT_EQ( nPopCount, s_nStackSize );
EXPECT_EQ( nDirtyPop, 0u );
for ( size_t i = 0; i < sizeof( arrVal ) / sizeof( arrVal[0] ); ++i ) {
EXPECT_EQ( arrVal[i], 0u );
}
propout() << std::make_pair( "push_count", s_nStackSize )
<< std::make_pair( "push_error", nPushError )
<< std::make_pair( "pop_empty", nPopEmpty )
<< std::make_pair( "dirty_pop", nDirtyPop )
;
}
};
CDSSTRESS_TreiberStack( stack_push_pop )
CDSSTRESS_EliminationStack( stack_push_pop )
CDSSTRESS_FCStack( stack_push_pop )
CDSSTRESS_FCDeque( stack_push_pop )
CDSSTRESS_StdStack( stack_push_pop )
} // namespace
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