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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_nThreadCount = 8;
static size_t s_nStackSize = 10000000;
static size_t s_nEliminationSize = 4;
class stack_push : public cds_test::stress_fixture
{
protected:
struct value_type {
size_t nNo;
size_t nThread;
value_type()
: nNo( 0 )
, nThread( 0 )
{}
value_type( size_t n )
: nNo( n )
, nThread( 0 )
{}
};
template <class Stack>
class Producer: public cds_test::thread
{
typedef cds_test::thread base_class;
public:
Producer( cds_test::thread_pool& pool, Stack& stack )
: base_class( pool )
, m_stack( stack )
, m_nStartItem( 0 )
, m_nEndItem( 0 )
, m_nPushError( 0 )
{}
Producer( Producer& src )
: base_class( src )
, m_stack( src.m_stack )
, m_nStartItem( 0 )
, m_nEndItem( 0 )
, m_nPushError( 0 )
{}
virtual thread * clone()
{
return new Producer( *this );
}
virtual void test()
{
value_type v;
v.nThread = id();
for ( v.nNo = m_nStartItem; v.nNo < m_nEndItem; ++v.nNo ) {
if ( !m_stack.push( v ))
++m_nPushError;
}
}
public:
Stack& m_stack;
size_t m_nStartItem;
size_t m_nEndItem;
size_t m_nPushError;
};
protected:
static void SetUpTestCase()
{
cds_test::config const& cfg = get_config("Stack_Push");
s_nThreadCount = cfg.get_size_t( "ThreadCount", s_nThreadCount );
s_nStackSize = cfg.get_size_t( "StackSize", s_nStackSize );
s_nEliminationSize = cfg.get_size_t( "EliminationSize", s_nEliminationSize );
if ( s_nThreadCount == 0 )
s_nThreadCount = 1;
}
//static void TearDownTestCase();
template <typename Stack>
void test( Stack& stack )
{
cds_test::thread_pool& pool = get_pool();
pool.add( new Producer<Stack>( pool, stack ), s_nThreadCount );
size_t nStart = 0;
size_t nThreadItemCount = s_nStackSize / s_nThreadCount;
for ( size_t i = 0; i < pool.size(); ++i ) {
Producer<Stack>& thread = static_cast<Producer<Stack>&>( pool.get( i ));
thread.m_nStartItem = nStart;
nStart += nThreadItemCount;
thread.m_nEndItem = nStart;
}
propout() << std::make_pair( "thread_count", s_nThreadCount )
<< 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_PopCount.get());
}
template <class Stack>
void analyze( Stack& testStack )
{
cds_test::thread_pool& pool = get_pool();
size_t nThreadItems = s_nStackSize / s_nThreadCount;
std::vector<size_t> aThread;
aThread.resize( s_nThreadCount );
for ( size_t i = 0; i < pool.size(); ++i ) {
Producer<Stack>& producer = static_cast<Producer<Stack>&>( pool.get( i ));
EXPECT_EQ( producer.m_nPushError, 0u ) << "Producer=" << i;
aThread[producer.id()] = producer.m_nEndItem - 1;
}
EXPECT_FALSE( testStack.empty());
std::unique_ptr< uint8_t[] > uarr( new uint8_t[s_nStackSize] );
uint8_t * arr = uarr.get();
memset( arr, 0, sizeof( arr[0] ) * s_nStackSize );
auto time_start = std::chrono::steady_clock::now();
size_t nPopped = 0;
value_type val;
while ( testStack.pop( val )) {
nPopped++;
ASSERT_LT( val.nNo, s_nStackSize );
++arr[val.nNo];
ASSERT_LT( val.nThread, s_nThreadCount );
ASSERT_EQ( aThread[val.nThread], val.nNo );
aThread[val.nThread]--;
}
propout() << std::make_pair( "pop_duration", std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::steady_clock::now() - time_start));
size_t nTotalItems = nThreadItems * s_nThreadCount;
size_t nError = 0;
for ( size_t i = 0; i < nTotalItems; ++i ) {
EXPECT_EQ( arr[i], 1 ) << "i=" << i;
if ( ++nError > 10 ) {
ASSERT_EQ( arr[i], 1 );
}
}
}
};
CDSSTRESS_TreiberStack( stack_push )
CDSSTRESS_EliminationStack( stack_push )
CDSSTRESS_FCStack( stack_push )
CDSSTRESS_FCDeque( stack_push )
CDSSTRESS_StdStack( stack_push )
} // namespace
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