| commit | author | age | ||
| 6e1425 | 1 | /* |
| H | 2 | ** $Id: lmem.h,v 1.31.1.1 2007/12/27 13:02:25 roberto Exp $ |
| 3 | ** Interface to Memory Manager | |
| 4 | ** See Copyright Notice in lua.h | |
| 5 | */ | |
| 6 | ||
| 7 | #ifndef lmem_h | |
| 8 | #define lmem_h | |
| 9 | ||
| 10 | ||
| 11 | #include <stddef.h> | |
| 12 | ||
| 13 | #include "llimits.h" | |
| 14 | #include "lua.h" | |
| 15 | ||
| 16 | #define MEMERRMSG "not enough memory" | |
| 17 | ||
| 18 | ||
| 19 | #define luaM_reallocv(L,b,on,n,e) \ | |
| 20 | ((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ? /* +1 to avoid warnings */ \ | |
| 21 | luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \ | |
| 22 | luaM_toobig(L)) | |
| 23 | ||
| 24 | #define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0) | |
| 25 | #define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0) | |
| 26 | #define luaM_freearray(L, b, n, t) luaM_reallocv(L, (b), n, 0, sizeof(t)) | |
| 27 | ||
| 28 | #define luaM_malloc(L,t) luaM_realloc_(L, NULL, 0, (t)) | |
| 29 | #define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t))) | |
| 30 | #define luaM_newvector(L,n,t) \ | |
| 31 | cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t))) | |
| 32 | ||
| 33 | #define luaM_growvector(L,v,nelems,size,t,limit,e) \ | |
| 34 | if ((nelems)+1 > (size)) \ | |
| 35 | ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e))) | |
| 36 | ||
| 37 | #define luaM_reallocvector(L, v,oldn,n,t) \ | |
| 38 | ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t)))) | |
| 39 | ||
| 40 | ||
| 41 | LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, | |
| 42 | size_t size); | |
| 43 | LUAI_FUNC void *luaM_toobig (lua_State *L); | |
| 44 | LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size, | |
| 45 | size_t size_elem, int limit, | |
| 46 | const char *errormsg); | |
| 47 | ||
| 48 | #endif | |
| 49 | ||
