oot/include/libc64/os_malloc.h

#ifndef LIBC64_OS_MALLOC_H
#define LIBC64_OS_MALLOC_H

#include "ultra64.h"

struct ArenaNode;

typedef struct Arena {
    /* 0x00 */ struct ArenaNode* head;
    /* 0x04 */ void* start;
#if PLATFORM_N64
    /* 0x08 */ u32 size;
    /* 0x0C */ u8 allocFailures;
#elif PLATFORM_GC
    /* 0x08 */ OSMesgQueue lockQueue;
    /* 0x20 */ u8 allocFailures; // only used in non-debug builds
    /* 0x21 */ u8 isInit;
    /* 0x22 */ u8 flag;
#endif
} Arena; // size = 0x10 (N64), size = 0x24 (GC)

typedef struct ArenaNode {
    /* 0x00 */ s16 magic;
    /* 0x02 */ s16 isFree;
    /* 0x04 */ u32 size;
    /* 0x08 */ struct ArenaNode* next;
    /* 0x0C */ struct ArenaNode* prev;
#if PLATFORM_N64 || DEBUG_FEATURES
    /* 0x10 */ const char* filename;
    /* 0x14 */ int line;
    /* 0x18 */ OSId threadId;
    /* 0x1C */ Arena* arena;
    /* 0x20 */ OSTime time;
    /* 0x28 */ u8 unk_28[0x30-0x28]; // probably padding
#endif
} ArenaNode; // size = 0x30 (N64 and GC debug), size = 0x10 (GC retail)

#if PLATFORM_N64
#define DECLARE_INTERRUPT_MASK OSIntMask __mask;
#define CLEAR_INTERRUPTS() __mask = osSetIntMask(OS_IM_NONE)
#define DISABLE_INTERRUPTS() __mask = osSetIntMask(OS_IM_NONE)
#define RESTORE_INTERRUPTS() osSetIntMask(__mask)
#else
#define DECLARE_INTERRUPT_MASK
#define CLEAR_INTERRUPTS() (void)0
#define DISABLE_INTERRUPTS() (void)0
#define RESTORE_INTERRUPTS() (void)0
#endif

void __osMallocInit(Arena* arena, void* start, s32 size);
void __osMallocCleanup(Arena* arena);
s32 __osMallocIsInitialized(Arena* arena);
void* __osMalloc(Arena* arena, u32 size);
void* __osMallocR(Arena* arena, u32 size);
void __osFree(Arena* arena, void* ptr);
void* __osRealloc(Arena* arena, void* ptr, u32 newSize);
void ArenaImpl_GetSizes(Arena* arena, u32* outMaxFree, u32* outFree, u32* outAlloc);
s32 __osCheckArena(Arena* arena);

#if PLATFORM_N64 || DEBUG_FEATURES
void* __osMallocDebug(Arena* arena, u32 size, const char* file, int line);
void* __osMallocRDebug(Arena* arena, u32 size, const char* file, int line);
void __osFreeDebug(Arena* arena, void* ptr, const char* file, int line);
void* __osReallocDebug(Arena* arena, void* ptr, u32 newSize, const char* file, int line);
#endif

#if PLATFORM_GC && DEBUG_FEATURES
void __osDisplayArena(Arena* arena);
extern u32 __osMalloc_FreeBlockTest_Enable;
#endif

#if PLATFORM_N64
extern u32 gTotalAllocFailures;
#endif

#endif