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Kinda have this memory alloation strat sorted...

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This commit is contained in:
Edward R. Gonzalez
2025-02-05 17:18:16 -05:00
parent a41bd8a5f1
commit 648e15daa6
11 changed files with 240 additions and 117 deletions
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code/base/memory_substrate.c
+81 -35
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@@ -87,7 +87,7 @@ void* heap_allocator_proc( void* allocator_data, AllocatorMode mode, SSIZE size,
switch ( mode )
{
#if defined( COMPILER_MSVC ) || ( defined( COMPILER_GCC ) && defined( OS_WINDOWS ) ) || ( defined( COMPILER_TINYC ) && defined( OS_WINDOWS ) )
case AllocatorMode_ALLOC:
case AllocatorMode_Alloc:
{
ptr = _aligned_malloc( size, alignment );
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
@@ -95,11 +95,11 @@ void* heap_allocator_proc( void* allocator_data, AllocatorMode mode, SSIZE size,
}
break;
case AllocatorMode_FREE:
case AllocatorMode_Free:
_aligned_free( old_memory );
break;
case AllocatorMode_FREE_ALL:
case AllocatorMode_Reisze:
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
@@ -118,7 +118,7 @@ void* heap_allocator_proc( void* allocator_data, AllocatorMode mode, SSIZE size,
}
break;
case EAllocation_FREE :
case EAllocation_Freee :
{
free( old_memory );
}
@@ -156,15 +156,20 @@ void* heap_allocator_proc( void* allocator_data, AllocatorMode mode, SSIZE size,
break;
#endif
case AllocatorMode_FREE_ALL:
case AllocatorMode_FreeAll:
break;
case AllocatorMode_QueryType:
return (void*) Heap
return (void*) AllocatorType_Heap;
case AllocatorMode_QuerySupport:
return (void*) (
AllocatorQuery_Alloc | AllocatorQuery_Free | AllocatorQuery_Reisze
);
}
#ifdef GEN_HEAP_ANALYSIS
if ( type == EAllocation_ALLOC )
if ( type == AllocatorMode_Alloc )
{
_heap_alloc_info* alloc_info = rcast( _heap_alloc_info*, rcast( char*, ptr) + alloc_info_remainder );
zero_item( alloc_info );
@@ -179,46 +184,87 @@ void* heap_allocator_proc( void* allocator_data, AllocatorMode mode, SSIZE size,
return ptr;
}
void* vm_allocator_proc(void* allocator_data, AllocType type, SSIZE size, SSIZE alignment, void* old_memory, SSIZE old_size, U64 flags)
{
void* result = nullptr;
// if(params->flags & ArenaFlag_LargePages)
// {
// base = os_reserve_large(reserve_size);
// os_commit_large(base, commit_size);
// }
// else
// {
// base = os_reserve(reserve_size);
// os_commit(base, commit_size);
// }
return result;
}
VMemory vm_alloc(VMemoryParams params)
VArena varena__alloc(VArenaParams params)
{
// rjf: round up reserve/commit sizes
U64 reserve_size = params->reserve_size;
U64 commit_size = params->commit_size;
U64 reserve_size = params.reserve_size;
U64 commit_size = params.commit_size;
if(params->flags & ArenaFlag_LargePages)
void* base = nullptr;
if (params.flags & VArenaFlag_LargePages)
{
reserve_size = align_pow2(reserve_size, os_get_system_info()->large_page_size);
commit_size = align_pow2(commit_size, os_get_system_info()->large_page_size);
base = os_reserve_large(reserve_size);
os_commit_large(base, commit_size);
asan_poison_memory_region(base, params.commit_size);
}
else
{
reserve_size = align_pow2(reserve_size, os_get_system_info()->page_size);
commit_size = align_pow2(commit_size, os_get_system_info()->page_size);
base = os_reserve(reserve_size);
os_commit(base, commit_size);
asan_poison_memory_region(base, params.commit_size);
}
// Allocate virtual memory
is_virtual = true;
// NOTE(Ed): Panic on varena creation failure
#if OS_FEATURE_GRAPHICAL
if(unlikely(base == 0))
{
os_graphical_message(1, str8_lit("Fatal Allocation Failure"), str8_lit("Unexpected memory allocation failure."));
os_abort(1);
}
#endif
VMemory vm = ;
SPTR header_size = size_of(VArena);
// TODO(Ed): Move this to vmem?
asan_poison_memory_region(base, params->commit_size);
VArena* vm = (VArena* ) base;
vm->reserve = reserve_size;
vm->committed = commit_size;
vm->reserve_start = (SPTR)base + header_size;
vm->flags = params.flags;
vm->commit_used = 0;
asan_unpoison_memory_region(vm, header_size);
}
void Varena_release(VArena* arena)
{
arena = nullptr;
}
void* varena_allocator_proc(void* allocator_data, AllocatorMode mode, SSIZE size, SSIZE alignment, void* old_memory, SSIZE old_size, U64 flags)
{
void* result = nullptr;
switch (mode)
{
case AllocatorMode_Alloc:
break;
case AllocatorMode_Free:
break;
case AllocatorMode_FreeAll:
break;
case AllocatorMode_Reisze:
break;
case AllocatorMode_QueryType:
break;
case AllocatorMode_QuerySupport:
break;
}
return result;
}