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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 <cds_test/stress_test.h>
#include <cds/intrusive/free_list.h>
#include <cds/intrusive/free_list_cached.h>
#ifdef CDS_DCAS_SUPPORT
# include <cds/intrusive/free_list_tagged.h>
#endif
namespace {
class put_get_single: public cds_test::stress_fixture
{
protected:
static size_t s_nThreadCount;
static size_t s_nPassCount;
template <typename FreeList >
struct value_type: public FreeList::node
{
atomics::atomic<size_t> counter;
value_type()
: counter(0)
{}
};
template <class FreeList>
class Worker: public cds_test::thread
{
typedef cds_test::thread base_class;
public:
FreeList& m_FreeList;
size_t m_nSuccess = 0;
public:
Worker( cds_test::thread_pool& pool, FreeList& s )
: base_class( pool )
, m_FreeList( s )
{}
Worker( Worker& src )
: base_class( src )
, m_FreeList( src.m_FreeList )
{}
virtual thread * clone()
{
return new Worker( *this );
}
virtual void test()
{
typedef value_type<FreeList> item_type;
for ( size_t pass = 0; pass < s_nPassCount; ++pass ) {
item_type* p;
while ( (p = static_cast<item_type*>( m_FreeList.get())) == nullptr );
p->counter.fetch_add( 1, atomics::memory_order_relaxed );
m_FreeList.put( p );
}
}
};
public:
static void SetUpTestCase()
{
cds_test::config const& cfg = get_config( "free_list" );
s_nThreadCount = cfg.get_size_t( "ThreadCount", s_nThreadCount );
s_nPassCount = cfg.get_size_t( "PassCount", s_nPassCount );
if ( s_nThreadCount == 0 )
s_nThreadCount = 1;
if ( s_nPassCount == 0 )
s_nPassCount = 1000;
}
//static void TearDownTestCase();
protected:
template <typename FreeList>
void test( FreeList& list )
{
cds_test::thread_pool& pool = get_pool();
value_type<FreeList> item;;
list.put( &item );
pool.add( new Worker<FreeList>( pool, list ), s_nThreadCount );
propout() << std::make_pair( "work_thread", s_nThreadCount )
<< std::make_pair( "pass_count", s_nPassCount );
std::chrono::milliseconds duration = pool.run();
propout() << std::make_pair( "duration", duration );
// analyze result
EXPECT_EQ( item.counter.load( atomics::memory_order_relaxed ), s_nPassCount * s_nThreadCount );
list.clear( []( typename FreeList::node* ) {} );
}
};
size_t put_get_single::s_nThreadCount = 4;
size_t put_get_single::s_nPassCount = 100000;
#define CDSSTRESS_FREELIST_F( name, freelist_type ) \
TEST_F( put_get_single, name ) \
{ \
freelist_type fl; \
test( fl ); \
}
CDSSTRESS_FREELIST_F( FreeList, cds::intrusive::FreeList )
typedef cds::intrusive::CachedFreeList<cds::intrusive::FreeList> cached_free_list;
CDSSTRESS_FREELIST_F( CachedFreeList, cached_free_list )
#ifdef CDS_DCAS_SUPPORT
TEST_F( put_get_single, TaggetFreeList )
{
struct tagged_ptr {
void* p;
uintptr_t tag;
};
atomics::atomic<tagged_ptr> tp;
if ( tp.is_lock_free()) {
cds::intrusive::TaggedFreeList fl;
test( fl );
}
else
std::cout << "Double-width CAS is not supported\n";
}
#endif
} // namespace
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