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Make sure memory passed to clay is cache line aligned

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Nic Barker 2025-01-29 13:13:13 +13:00
parent 0604e3a87e
commit 3d5dad7bee
1 changed files with 4 additions and 2 deletions
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6
clay.h
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@ -856,13 +856,15 @@ struct Clay_Context {
Clay_Context* Clay__Context_Allocate_Arena(Clay_Arena *arena) { Clay_Context* Clay__Context_Allocate_Arena(Clay_Arena *arena) {
size_t totalSizeBytes = sizeof(Clay_Context); size_t totalSizeBytes = sizeof(Clay_Context);
uintptr_t nextAllocOffset = arena->nextAllocation + (64 - (arena->nextAllocation % 64)); uintptr_t memoryAddress = (uintptr_t)arena->memory;
// Make sure the memory address passed in for clay to use is cache line aligned
uintptr_t nextAllocOffset = (memoryAddress % 64);
if (nextAllocOffset + totalSizeBytes > arena->capacity) if (nextAllocOffset + totalSizeBytes > arena->capacity)
{ {
return NULL; return NULL;
} }
arena->nextAllocation = nextAllocOffset + totalSizeBytes; arena->nextAllocation = nextAllocOffset + totalSizeBytes;
return (Clay_Context*)((uintptr_t)arena->memory + nextAllocOffset); return (Clay_Context*)(memoryAddress + nextAllocOffset);
} }
Clay_String Clay__WriteStringToCharBuffer(Clay__charArray *buffer, Clay_String string) { Clay_String Clay__WriteStringToCharBuffer(Clay__charArray *buffer, Clay_String string) {