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feat(memory): add SMemAlloc, SMemFree, and SMemReAlloc

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This commit is contained in:
fallenoak 2020-09-07 17:00:14 -05:00
parent e128bd2554
commit ec1c5c8844
3 changed files with 86 additions and 0 deletions
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5
storm/CMakeLists.txt
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file(GLOB STORM_SOURCES "*.cpp")
add_library(storm STATIC
${STORM_SOURCES}
)

66
storm/Memory.cpp Normal file
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#include "Memory.hpp"
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);
void* result;
if (flags & 0x8) {
result = calloc(1, alignedBytes);
} else {
result = malloc(alignedBytes);
}
if (result) {
return result;
} else {
// TODO handle errors
return nullptr;
}
}
void SMemFree(void* ptr) {
if (ptr) {
free(ptr);
}
}
void SMemFree(void* ptr, const char* filename, int32_t linenumber, uint32_t flags) {
if (ptr) {
free(ptr);
}
}
void* SMemReAlloc(void* ptr, size_t bytes, const char* filename, int32_t linenumber, uint32_t flags) {
if (flags == 0xB00BEEE5) {
return nullptr;
}
if (!ptr) {
return SMemAlloc(bytes, filename, linenumber, flags);
}
if (flags & 0x10) {
return nullptr;
}
size_t alignedBytes = (bytes + (ALIGNMENT - 1)) & ~(ALIGNMENT - 1);
void* result = realloc(ptr, alignedBytes);
if (result) {
if (flags & 0x8) {
// TODO zero out expanded portion
}
return result;
} else {
if (alignedBytes) {
// TODO handle errors
}
return NULL;
}
}

15
storm/Memory.hpp Normal file
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#ifndef STORM_MEMORY_HPP
#define STORM_MEMORY_HPP
#include <cstdint>
#include <cstdlib>
void* SMemAlloc(size_t bytes, const char* filename, int32_t linenumber, uint32_t flags);
void SMemFree(void* ptr);
void SMemFree(void* ptr, const char* filename, int32_t linenumber, uint32_t flags);
void* SMemReAlloc(void* ptr, size_t bytes, const char* filename, int32_t linenumber, uint32_t flags);
#endif