rlm@1: /*
rlm@1: ** $Id: lmem.h,v 1.31.1.1 2007/12/27 13:02:25 roberto Exp $
rlm@1: ** Interface to Memory Manager
rlm@1: ** See Copyright Notice in lua.h
rlm@1: */
rlm@1: 
rlm@1: #ifndef lmem_h
rlm@1: #define lmem_h
rlm@1: 
rlm@1: 
rlm@1: #include <stddef.h>
rlm@1: 
rlm@1: #include "llimits.h"
rlm@1: #include "lua.h"
rlm@1: 
rlm@1: #define MEMERRMSG	"not enough memory"
rlm@1: 
rlm@1: 
rlm@1: #define luaM_reallocv(L,b,on,n,e) \
rlm@1: 	((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ?  /* +1 to avoid warnings */ \
rlm@1: 		luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
rlm@1: 		luaM_toobig(L))
rlm@1: 
rlm@1: #define luaM_freemem(L, b, s)	luaM_realloc_(L, (b), (s), 0)
rlm@1: #define luaM_free(L, b)		luaM_realloc_(L, (b), sizeof(*(b)), 0)
rlm@1: #define luaM_freearray(L, b, n, t)   luaM_reallocv(L, (b), n, 0, sizeof(t))
rlm@1: 
rlm@1: #define luaM_malloc(L,t)	luaM_realloc_(L, NULL, 0, (t))
rlm@1: #define luaM_new(L,t)		cast(t *, luaM_malloc(L, sizeof(t)))
rlm@1: #define luaM_newvector(L,n,t) \
rlm@1: 		cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
rlm@1: 
rlm@1: #define luaM_growvector(L,v,nelems,size,t,limit,e) \
rlm@1:           if ((nelems)+1 > (size)) \
rlm@1:             ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
rlm@1: 
rlm@1: #define luaM_reallocvector(L, v,oldn,n,t) \
rlm@1:    ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
rlm@1: 
rlm@1: 
rlm@1: LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
rlm@1:                                                           size_t size);
rlm@1: LUAI_FUNC void *luaM_toobig (lua_State *L);
rlm@1: LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
rlm@1:                                size_t size_elem, int limit,
rlm@1:                                const char *errormsg);
rlm@1: 
rlm@1: #endif
rlm@1: