#define GSL_THROW_ON_CONTRACT_VIOLATION
#define NO_INFO 1
#include <common.cxx>
#include <iostream>
#include <kernel/memmap.hpp>
CASE ("Using the fixed memory range class")
{
GIVEN ("A fixed memory range over raw sequence of bytes")
{
// A dynamically allocated "raw pool" of bytes
// @note : In the kernel memory map these would be physical ranges
char* seq = const_cast<char*>("Spans provide a safer way to access memory");
Fixed_memory_range range(reinterpret_cast<uintptr_t>(seq + 16),
reinterpret_cast<uintptr_t>(seq + 20), "Demo range",
"A range inside a local pool");
auto seq_start = seq + 16;
auto seq_end = seq + 20;
EXPECT(range.size() == seq_end - seq_start + 1);
EXPECT(std::string(range.name()) == std::string("Demo range"));
THEN("You can iterate safely over that range, and not out of bounds"){
for (auto i : range)
EXPECT(i);
auto i = range.begin();
for (; i != range.end(); i++)
EXPECT(*i);
bool overlaps(const Fixed_memory_range& other) const {
// Other range overlaps with my range
return in_range(other.addr_start()) or in_range(other.addr_end())
// Or my range is inside other range
or (other.in_range(addr_start()) and other.in_range(addr_end()));
}
bool Fixed_memory_range::overlaps(const Fixed_memory_range& other) const noexcept {
return (in_range(other.addr_start()) or in_range(other.addr_end())) //< Other range overlaps with my range
or (other.in_range(addr_start()) and other.in_range(addr_end())); //< My range is inside other range
}