// SONIC ROBO BLAST 2
//-----------------------------------------------------------------------------
// Copyright (C) 1993-1996 by id Software, Inc.
// Copyright (C) 1998-2000 by DooM Legacy Team.
// Copyright (C) 1999-2016 by Sonic Team Junior.
//
// This program is free software distributed under the
// terms of the GNU General Public License, version 2.
// See the 'LICENSE' file for more details.
//-----------------------------------------------------------------------------
/// \file  z_zone.h
/// \brief Zone Memory Allocation, perhaps NeXT ObjectiveC inspired

#ifndef __Z_ZONE__
#define __Z_ZONE__

#include <stdio.h>
#include "doomtype.h"

#ifdef __GNUC__ // __attribute__ ((X))
#if (__GNUC__ > 4) || (__GNUC__ == 4 && (__GNUC_MINOR__ >= 3 || (__GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ >= 5)))
#define FUNCALLOC(X) __attribute__((alloc_size(X)))
#endif // odd, it is documented in GCC 4.3.0 but it exists in 4.2.4, at least
#endif

#ifndef FUNCALLOC
#define FUNCALLOC(x)
#endif

//#define ZDEBUG

//
// ZONE MEMORY
// PU - purge tags.
// Tags < PU_LEVEL are not purged until freed explicitly.
#define PU_STATIC               1 // static entire execution time
#define PU_LUA                  2 // static entire execution time -- used by lua so it doesn't get caught in loops forever

#define PU_SOUND               11 // static while playing
#define PU_MUSIC               12 // static while playing
#define PU_HUDGFX              13 // static until WAD added

#define PU_HWRPATCHINFO        21 // Hardware GLPatch_t struct for OpenGL texture cache
#define PU_HWRPATCHCOLMIPMAP   22 // Hardware GLMipmap_t struct colromap variation of patch

#define PU_HWRCACHE            48 // static until unlocked
#define PU_CACHE               49 // static until unlocked

// Tags s.t. PU_LEVEL <= tag < PU_PURGELEVEL are purged at level start
#define PU_LEVEL               50 // static until level exited
#define PU_LEVSPEC             51 // a special thinker in a level
#define PU_HWRPLANE            52

// Tags >= PU_PURGELEVEL are purgable whenever needed
#define PU_PURGELEVEL         100
#define PU_CACHE_UNLOCKED     101
#define PU_HWRCACHE_UNLOCKED  102 // 'second-level' cache for graphics
                                  // stored in hardware format and downloaded as needed
#define PU_HWRPATCHINFO_UNLOCKED 103

void Z_Init(void);
void Z_FreeTags(INT32 lowtag, INT32 hightag);
void Z_CheckMemCleanup(void);
void Z_CheckHeap(INT32 i);
#ifdef PARANOIA
void Z_ChangeTag2(void *ptr, INT32 tag, const char *file, INT32 line);
#else
void Z_ChangeTag2(void *ptr, INT32 tag);
#endif

#ifdef PARANOIA
void Z_SetUser2(void *ptr, void **newuser, const char *file, INT32 line);
#else
void Z_SetUser2(void *ptr, void **newuser);
#endif

#ifdef ZDEBUG
#define Z_Free(p) Z_Free2(p, __FILE__, __LINE__)
void Z_Free2(void *ptr, const char *file, INT32 line);
#define Z_Malloc(s,t,u) Z_Malloc2(s, t, u, 0, __FILE__, __LINE__)
#define Z_MallocAlign(s,t,u,a) Z_Malloc2(s, t, u, a, __FILE__, __LINE__)
void *Z_Malloc2(size_t size, INT32 tag, void *user, INT32 alignbits, const char *file, INT32 line) FUNCALLOC(1);
#define Z_Calloc(s,t,u) Z_Calloc2(s, t, u, 0, __FILE__, __LINE__)
#define Z_CallocAlign(s,t,u,a) Z_Calloc2(s, t, u, a, __FILE__, __LINE__)
void *Z_Calloc2(size_t size, INT32 tag, void *user, INT32 alignbits, const char *file, INT32 line) FUNCALLOC(1);
#define Z_Realloc(p,s,t,u) Z_Realloc2(p, s, t, u, 0, __FILE__, __LINE__)
#define Z_ReallocAlign(p,s,t,u,a) Z_Realloc2(p,s, t, u, a, __FILE__, __LINE__)
void *Z_Realloc2(void *ptr, size_t size, INT32 tag, void *user, INT32 alignbits, const char *file, INT32 line) FUNCALLOC(2);
#else
void Z_Free(void *ptr);
void *Z_MallocAlign(size_t size, INT32 tag, void *user, INT32 alignbits) FUNCALLOC(1);
#define Z_Malloc(s,t,u) Z_MallocAlign(s, t, u, 0)
void *Z_CallocAlign(size_t size, INT32 tag, void *user, INT32 alignbits) FUNCALLOC(1);
#define Z_Calloc(s,t,u) Z_CallocAlign(s, t, u, 0)
void *Z_ReallocAlign(void *ptr, size_t size, INT32 tag, void *user, INT32 alignbits) FUNCALLOC(2) ;
#define Z_Realloc(p, s,t,u) Z_ReallocAlign(p, s, t, u, 0)
#endif

size_t Z_TagUsage(INT32 tagnum);
size_t Z_TagsUsage(INT32 lowtag, INT32 hightag);

char *Z_StrDup(const char *in);

// This is used to get the local FILE : LINE info from CPP
// prior to really call the function in question.
//
#ifdef PARANOIA
#define Z_ChangeTag(p,t) Z_ChangeTag2(p, t, __FILE__, __LINE__)
#else
#define Z_ChangeTag(p,t) Z_ChangeTag2(p, t)
#endif

#ifdef PARANOIA
#define Z_SetUser(p,u) Z_SetUser2(p, u, __FILE__, __LINE__)
#else
#define Z_SetUser(p,u) Z_SetUser2(p, u)
#endif

#define Z_Unlock(p) (void)p

#endif