Example 11: Using the 01heap memory_resource

Full example for cetl::pmr::UnsynchronizedO1HeapMemoryResourceDelegate

#include "cetl/pmr/o1heap_memory_resource_delegate.hpp"
 
#include <gtest/gtest.h>
 
namespace cetl
{
namespace pf17
{
 
TEST(example_11_memory_resource_o1heap, main)
{
// We'll use the aligned-storage helper class to defined properly aligned storage for the 01-heap areana. As this
// is a large chunk we'll make it static to keep it off the stack.
static cetl::pmr::O1HeapAlignedStorage<0x100000> large_buffer{};
 
// Now we can use our test subject to allocate and deallocate memory.
cetl::pmr::UnsynchronizedO1HeapMemoryResourceDelegate test_subject{large_buffer};
 
// Note that, until https://github.com/pavel-kirienko/o1heap/issues/13 is fixed the alignment doesn't have
// any effect on allocation requests.
void* mem = test_subject.allocate(8);
ASSERT_NE(nullptr, mem);
test_subject.deallocate(mem, 8);
}
 
}// namespace pf17
}// namespace cetl