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Optimize make_local_shared to use a single allocation

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This commit is contained in:
Peter Dimov
2017-06-20 04:27:45 +03:00
parent 1f86907a3d
commit 2b5869882a
9 changed files with 316 additions and 62 deletions
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test/allocate_local_shared_esft_test.cpp
+63 -41
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@@ -48,21 +48,21 @@ int X::instances = 0;
int main()
{
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>() );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -70,21 +70,43 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared_noinit< X >( std::allocator<void>() );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
BOOST_ERROR( "px->shared_from_this() failed" );
}
}
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -92,21 +114,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -114,21 +136,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -136,21 +158,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3, 4 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -158,21 +180,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -180,21 +202,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -202,21 +224,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -224,21 +246,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7, 8 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -246,21 +268,21 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
{
boost::shared_ptr< X > px = boost::allocate_local_shared< X >( std::allocator<void>(), 1, 2, 3, 4, 5, 6, 7, 8, 9 );
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
try
{
boost::shared_ptr< X > qx = px->shared_from_this();
BOOST_TEST( px == qx );
BOOST_TEST_EQ( px, qx );
BOOST_TEST( !( px < qx ) && !( qx < px ) );
px.reset();
BOOST_TEST( X::instances == 1 );
BOOST_TEST_EQ( X::instances, 1 );
}
catch( boost::bad_weak_ptr const& )
{
@@ -268,7 +290,7 @@ int main()
}
}
BOOST_TEST( X::instances == 0 );
BOOST_TEST_EQ( X::instances, 0 );
return boost::report_errors();
}