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feat(memory): add SMemCopy and SMemMove

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Adam Heinermann 2025-09-01 20:31:23 -07:00 • committed by fallenoak
parent 60523c3fe8
commit 73e0097395
3 changed files with 79 additions and 0 deletions
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10
storm/Memory.cpp
View file

@ -2,8 +2,10 @@
#include <cstring>
constexpr size_t ALIGNMENT = 8;
void* SMemAlloc(size_t bytes, const char* filename, int32_t linenumber, uint32_t flags) {
size_t alignedBytes = (bytes + (ALIGNMENT - 1)) & ~(ALIGNMENT - 1);
@ -23,6 +25,10 @@ void* SMemAlloc(size_t bytes, const char* filename, int32_t linenumber, uint32_t
}
}
void SMemCopy(void* dst, void* src, size_t bytes) {
memmove(dst, src, bytes);
}
void SMemFill(void* ptr, size_t bytes, uint8_t value) {
memset(ptr, value, bytes);
}
@ -39,6 +45,10 @@ void SMemFree(void* ptr, const char* filename, int32_t linenumber, uint32_t flag
}
}
void SMemMove(void* dst, void* src, size_t bytes) {
memmove(dst, src, bytes);
}
void* SMemReAlloc(void* ptr, size_t bytes, const char* filename, int32_t linenumber, uint32_t flags) {
if (flags == 0xB00BEEE5) {
return nullptr;

4
storm/Memory.hpp
View file

@ -10,12 +10,16 @@
void* SMemAlloc(size_t bytes, const char* filename, int32_t linenumber, uint32_t flags = 0);
void SMemCopy(void* dst, void* src, size_t bytes);
void SMemFill(void* ptr, size_t bytes, uint8_t value);
void SMemFree(void* ptr);
void SMemFree(void* ptr, const char* filename, int32_t linenumber, uint32_t flags = 0);
void SMemMove(void* dst, void* src, size_t bytes);
void* SMemReAlloc(void* ptr, size_t bytes, const char* filename, int32_t linenumber, uint32_t flags = 0);
void SMemZero(void* ptr, size_t bytes);

65
test/Memory.cpp
View file

@ -3,6 +3,7 @@
#include <cstring>
#include <numeric>
#include <vector>
TEST_CASE("SMemAlloc", "[memory]") {
@ -30,6 +31,38 @@ TEST_CASE("SMemAlloc", "[memory]") {
}
}
TEST_CASE("SMemCopy", "[memory]") {
std::vector<uint8_t> data = { 1, 255, 128, 42, 69, 99, 13, 37 };
SECTION("copies memory") {
std::vector<uint8_t> dest(8);
SMemCopy(dest.data(), data.data(), 8);
CHECK_THAT(dest, Catch::Matchers::Equals(data));
}
SECTION("copies nothing if size is 0") {
std::vector<uint8_t> dest(8);
SMemCopy(dest.data(), data.data(), 0);
CHECK(std::accumulate(dest.begin(), dest.end(), 0u) == 0);
}
SECTION("copies overlapping memory right") {
std::vector<uint8_t> result = { 1, 255, 1, 255, 128, 42, 13, 37 };
SMemCopy(data.data() + 2, data.data(), 4);
CHECK_THAT(data, Catch::Matchers::Equals(result));
}
SECTION("copies overlapping memory left") {
std::vector<uint8_t> result = { 1, 255, 69, 99, 13, 37, 13, 37 };
SMemCopy(data.data() + 2, data.data() + 4, 4);
CHECK_THAT(data, Catch::Matchers::Equals(result));
}
}
TEST_CASE("SMemFill", "[memory]") {
std::vector<uint8_t> data = { 1, 255, 128, 42, 69, 99, 13, 37 };
@ -63,6 +96,38 @@ TEST_CASE("SMemFree full args", "[memory]") {
}
}
TEST_CASE("SMemMove", "[memory]") {
std::vector<uint8_t> data = { 1, 255, 128, 42, 69, 99, 13, 37 };
SECTION("copies memory") {
std::vector<uint8_t> dest(8);
SMemMove(dest.data(), data.data(), 8);
CHECK_THAT(dest, Catch::Matchers::Equals(data));
}
SECTION("copies nothing if size is 0") {
std::vector<uint8_t> dest(8);
SMemMove(dest.data(), data.data(), 0);
CHECK(std::accumulate(dest.begin(), dest.end(), 0u) == 0);
}
SECTION("copies overlapping memory right") {
std::vector<uint8_t> result = { 1, 255, 1, 255, 128, 42, 13, 37 };
SMemMove(data.data() + 2, data.data(), 4);
CHECK_THAT(data, Catch::Matchers::Equals(result));
}
SECTION("copies overlapping memory left") {
std::vector<uint8_t> result = { 1, 255, 69, 99, 13, 37, 13, 37 };
SMemMove(data.data() + 2, data.data() + 4, 4);
CHECK_THAT(data, Catch::Matchers::Equals(result));
}
}
TEST_CASE("SMemReAlloc", "[memory]") {
SECTION("allocates memory") {
void* ptr = SMemReAlloc(nullptr, 16, __FILE__, __LINE__);