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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// REQUIRES: c++experimental
// UNSUPPORTED: c++98, c++03
// <experimental/memory_resource>
// memory_resource * new_delete_resource()
#include <experimental/memory_resource>
#include <type_traits>
#include <cassert>
#include "count_new.hpp"
namespace ex = std::experimental::pmr;
struct assert_on_compare : public ex::memory_resource
{
protected:
virtual void * do_allocate(size_t, size_t)
{ assert(false); }
virtual void do_deallocate(void *, size_t, size_t)
{ assert(false); }
virtual bool do_is_equal(ex::memory_resource const &) const noexcept
{ assert(false); }
};
void test_return()
{
{
static_assert(std::is_same<
decltype(ex::new_delete_resource()), ex::memory_resource*
>::value, "");
}
// assert not null
{
assert(ex::new_delete_resource());
}
// assert same return value
{
assert(ex::new_delete_resource() == ex::new_delete_resource());
}
}
void test_equality()
{
// Same object
{
ex::memory_resource & r1 = *ex::new_delete_resource();
ex::memory_resource & r2 = *ex::new_delete_resource();
// check both calls returned the same object
assert(&r1 == &r2);
// check for proper equality semantics
assert(r1 == r2);
assert(r2 == r1);
assert(!(r1 != r2));
assert(!(r2 != r1));
}
// Different types
{
ex::memory_resource & r1 = *ex::new_delete_resource();
assert_on_compare c;
ex::memory_resource & r2 = c;
assert(r1 != r2);
assert(!(r1 == r2));
}
}
void test_allocate_deallocate()
{
ex::memory_resource & r1 = *ex::new_delete_resource();
globalMemCounter.reset();
void *ret = r1.allocate(50);
assert(ret);
assert(globalMemCounter.checkOutstandingNewEq(1));
assert(globalMemCounter.checkLastNewSizeEq(50));
r1.deallocate(ret, 1);
assert(globalMemCounter.checkOutstandingNewEq(0));
assert(globalMemCounter.checkDeleteCalledEq(1));
}
int main()
{
static_assert(noexcept(ex::new_delete_resource()), "Must be noexcept");
test_return();
test_equality();
test_allocate_deallocate();
}
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