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frying my brain coming up with a decent compromise on arena usage...

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This commit is contained in:
Edward R. Gonzalez
2025-02-05 15:46:58 -05:00
parent 268271e4a7
commit a41bd8a5f1
7 changed files with 231 additions and 230 deletions
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code/base/memory_substrate.c
+98 -51
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@@ -4,6 +4,7 @@
# include "../os/os.h"
#endif
#ifdef MD_HEAP_ANALYSIS
#define GEN_HEAP_STATS_MAGIC 0xDEADC0DE
typedef struct _heap_stats _heap_stats;
@@ -47,8 +48,9 @@ struct _heap_alloc_info
SSIZE size;
void* physical_start;
};
#endif
void* heap_allocator_proc( void* allocator_data, AllocType type, SSIZE size, SSIZE alignment, void* old_memory, SSIZE old_size, U64 flags )
void* heap_allocator_proc( void* allocator_data, AllocatorMode mode, SSIZE size, SSIZE alignment, void* old_memory, SSIZE old_size, U64 flags )
{
void* ptr = nullptr;
// unused( allocator_data );
@@ -62,7 +64,7 @@ void* heap_allocator_proc( void* allocator_data, AllocType type, SSIZE size, SSI
ssize track_size = max( alloc_info_size, alignment ) + alloc_info_remainder;
switch ( type )
{
case EAllocation_FREE :
case EAllocatorMode_FREE :
{
if ( ! old_memory )
break;
@@ -72,7 +74,7 @@ void* heap_allocator_proc( void* allocator_data, AllocType type, SSIZE size, SSI
old_memory = alloc_info->physical_start;
}
break;
case EAllocation_ALLOC :
case EAllocatorMode_ALLOC :
{
size += track_size;
}
@@ -82,76 +84,83 @@ void* heap_allocator_proc( void* allocator_data, AllocType type, SSIZE size, SSI
}
#endif
switch ( type )
switch ( mode )
{
#if defined( COMPILER_MSVC ) || ( defined( COMPILER_GCC ) && defined( OS_WINDOWS ) ) || ( defined( COMPILER_TINYC ) && defined( OS_WINDOWS ) )
case EAllocType_ALLOC :
#if defined( COMPILER_MSVC ) || ( defined( COMPILER_GCC ) && defined( OS_WINDOWS ) ) || ( defined( COMPILER_TINYC ) && defined( OS_WINDOWS ) )
case AllocatorMode_ALLOC:
{
ptr = _aligned_malloc( size, alignment );
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
zero_size( ptr, size );
break;
case EAllocType_FREE :
}
break;
case AllocatorMode_FREE:
_aligned_free( old_memory );
break;
case EAllocType_RESIZE :
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
break;
#elif defined( OS_LINUX ) && ! defined( CPU_ARM ) && ! defined( COMPILER_TINYC )
case AllocatorMode_FREE_ALL:
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#elif defined( OS_LINUX ) && ! defined( CPU_ARM ) && ! defined( COMPILER_TINYC )
case EAllocation_ALLOC :
{
ptr = aligned_alloc( alignment, ( size + alignment - 1 ) & ~( alignment - 1 ) );
{
ptr = aligned_alloc( alignment, ( size + alignment - 1 ) & ~( alignment - 1 ) );
if ( flags & GEN_ALLOCATOR_FLAG_CLEAR_TO_ZERO )
{
zero_size( ptr, size );
}
if ( flags & GEN_ALLOCATOR_FLAG_CLEAR_TO_ZERO )
{
zero_size( ptr, size );
}
break;
}
break;
case EAllocation_FREE :
{
free( old_memory );
}
break;
{
free( old_memory );
}
break;
case EAllocation_RESIZE :
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#else
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#else
case EAllocType_ALLOC :
{
posix_memalign( &ptr, alignment, size );
{
posix_memalign( &ptr, alignment, size );
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
{
zero_size( ptr, size );
}
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
{
zero_size( ptr, size );
}
break;
}
break;
case EAllocType_FREE :
{
free( old_memory );
}
break;
{
free( old_memory );
}
break;
case EAllocType_RESIZE :
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#endif
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#endif
case EAllocType_FREE_ALL :
case AllocatorMode_FREE_ALL:
break;
case AllocatorMode_QueryType:
return (void*) Heap
}
#ifdef GEN_HEAP_ANALYSIS
@@ -172,6 +181,44 @@ void* heap_allocator_proc( void* allocator_data, AllocType type, SSIZE size, SSI
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)
{
// rjf: round up reserve/commit sizes
U64 reserve_size = params->reserve_size;
U64 commit_size = params->commit_size;
if(params->flags & ArenaFlag_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);
}
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);
}
// Allocate virtual memory
is_virtual = true;
VMemory vm = ;
// TODO(Ed): Move this to vmem?
asan_poison_memory_region(base, params->commit_size);
}