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// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/core/memory_resource.hpp>
#include <boost/core/lightweight_test.hpp>
#include <new>
#include <cstddef>
static bool do_allocate_called;
static std::size_t do_allocate_bytes;
static std::size_t do_allocate_alignment;
static bool do_deallocate_called;
static void* do_deallocate_p;
static std::size_t do_deallocate_bytes;
static std::size_t do_deallocate_alignment;
struct R1: public boost::core::memory_resource
{
void* do_allocate( std::size_t bytes, std::size_t alignment )
{
do_allocate_called = true;
do_allocate_bytes = bytes;
do_allocate_alignment = alignment;
return ::operator new( bytes );
}
void do_deallocate( void* p, std::size_t bytes, std::size_t alignment )
{
do_deallocate_called = true;
do_deallocate_p = p;
do_deallocate_bytes = bytes;
do_deallocate_alignment = alignment;
::operator delete( p );
}
bool do_is_equal( memory_resource const & /*other*/ ) const BOOST_NOEXCEPT
{
return true;
}
};
struct R2: public boost::core::memory_resource
{
void* do_allocate( std::size_t bytes, std::size_t /*alignment*/ )
{
return ::operator new( bytes );
}
void do_deallocate( void* p, std::size_t /*bytes*/, std::size_t /*alignment*/ )
{
::operator delete( p );
}
bool do_is_equal( memory_resource const & other ) const BOOST_NOEXCEPT
{
return this == &other;
}
};
int main()
{
{
R1 r1;
do_allocate_called = false;
do_allocate_bytes = 0;
do_allocate_alignment = 0;
void* p = r1.allocate( 31 );
BOOST_TEST( do_allocate_called );
BOOST_TEST_EQ( do_allocate_bytes, 31 );
BOOST_TEST_EQ( do_allocate_alignment, boost::core::max_align );
do_deallocate_called = false;
do_deallocate_p = 0;
do_deallocate_bytes = 0;
do_deallocate_alignment = 0;
r1.deallocate( p, 31 );
BOOST_TEST( do_deallocate_called );
BOOST_TEST_EQ( do_deallocate_p, p );
BOOST_TEST_EQ( do_deallocate_bytes, 31 );
BOOST_TEST_EQ( do_deallocate_alignment, boost::core::max_align );
}
{
R1 r1;
do_allocate_called = false;
do_allocate_bytes = 0;
do_allocate_alignment = 0;
void* p = r1.allocate( 1, 8 );
BOOST_TEST( do_allocate_called );
BOOST_TEST_EQ( do_allocate_bytes, 1 );
BOOST_TEST_EQ( do_allocate_alignment, 8 );
do_deallocate_called = false;
do_deallocate_p = 0;
do_deallocate_bytes = 0;
do_deallocate_alignment = 0;
r1.deallocate( p, 1, 8 );
BOOST_TEST( do_deallocate_called );
BOOST_TEST_EQ( do_deallocate_p, p );
BOOST_TEST_EQ( do_deallocate_bytes, 1 );
BOOST_TEST_EQ( do_deallocate_alignment, 8 );
}
{
R1 r1;
R1 r2;
BOOST_TEST( r1 == r1 );
BOOST_TEST_NOT( r1 != r1 );
BOOST_TEST( r1 == r2 );
BOOST_TEST_NOT( r1 != r2 );
}
{
R2 r1;
R2 r2;
BOOST_TEST( r1 == r1 );
BOOST_TEST_NOT( r1 != r1 );
BOOST_TEST_NOT( r1 == r2 );
BOOST_TEST( r1 != r2 );
}
return boost::report_errors();
}
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