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Diffstat (limited to 'src/lua-5.3/lmem.h')
| -rw-r--r-- | src/lua-5.3/lmem.h | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/src/lua-5.3/lmem.h b/src/lua-5.3/lmem.h deleted file mode 100644 index 357b1e4..0000000 --- a/src/lua-5.3/lmem.h +++ /dev/null | |||
| @@ -1,69 +0,0 @@ | |||
| 1 | /* | ||
| 2 | ** $Id: lmem.h,v 1.43.1.1 2017/04/19 17:20:42 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 | |||
| 17 | /* | ||
| 18 | ** This macro reallocs a vector 'b' from 'on' to 'n' elements, where | ||
| 19 | ** each element has size 'e'. In case of arithmetic overflow of the | ||
| 20 | ** product 'n'*'e', it raises an error (calling 'luaM_toobig'). Because | ||
| 21 | ** 'e' is always constant, it avoids the runtime division MAX_SIZET/(e). | ||
| 22 | ** | ||
| 23 | ** (The macro is somewhat complex to avoid warnings: The 'sizeof' | ||
| 24 | ** comparison avoids a runtime comparison when overflow cannot occur. | ||
| 25 | ** The compiler should be able to optimize the real test by itself, but | ||
| 26 | ** when it does it, it may give a warning about "comparison is always | ||
| 27 | ** false due to limited range of data type"; the +1 tricks the compiler, | ||
| 28 | ** avoiding this warning but also this optimization.) | ||
| 29 | */ | ||
| 30 | #define luaM_reallocv(L,b,on,n,e) \ | ||
| 31 | (((sizeof(n) >= sizeof(size_t) && cast(size_t, (n)) + 1 > MAX_SIZET/(e)) \ | ||
| 32 | ? luaM_toobig(L) : cast_void(0)) , \ | ||
| 33 | luaM_realloc_(L, (b), (on)*(e), (n)*(e))) | ||
| 34 | |||
| 35 | /* | ||
| 36 | ** Arrays of chars do not need any test | ||
| 37 | */ | ||
| 38 | #define luaM_reallocvchar(L,b,on,n) \ | ||
| 39 | cast(char *, luaM_realloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char))) | ||
| 40 | |||
| 41 | #define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0) | ||
| 42 | #define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0) | ||
| 43 | #define luaM_freearray(L, b, n) luaM_realloc_(L, (b), (n)*sizeof(*(b)), 0) | ||
| 44 | |||
| 45 | #define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s)) | ||
| 46 | #define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t))) | ||
| 47 | #define luaM_newvector(L,n,t) \ | ||
| 48 | cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t))) | ||
| 49 | |||
| 50 | #define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s)) | ||
| 51 | |||
| 52 | #define luaM_growvector(L,v,nelems,size,t,limit,e) \ | ||
| 53 | if ((nelems)+1 > (size)) \ | ||
| 54 | ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e))) | ||
| 55 | |||
| 56 | #define luaM_reallocvector(L, v,oldn,n,t) \ | ||
| 57 | ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t)))) | ||
| 58 | |||
| 59 | LUAI_FUNC l_noret luaM_toobig (lua_State *L); | ||
| 60 | |||
| 61 | /* not to be called directly */ | ||
| 62 | LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, | ||
| 63 | size_t size); | ||
| 64 | LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size, | ||
| 65 | size_t size_elem, int limit, | ||
| 66 | const char *what); | ||
| 67 | |||
| 68 | #endif | ||
| 69 | |||
