/* ** $Id: lmem.h,v 1.40.1.1 2013/04/12 18:48:47 roberto Exp $ ** Interface to Memory Manager ** See Copyright Notice in lua.h */ #ifndef lmem_h #define lmem_h #include <sys/zfs_context.h> #include "llimits.h" #include "lua.h" /* ** This macro avoids the runtime division MAX_SIZET/(e), as 'e' is ** always constant. ** The macro is somewhat complex to avoid warnings: ** +1 avoids warnings of "comparison has constant result"; ** cast to 'void' avoids warnings of "value unused". */ #define luaM_reallocv(L,b,on,n,e) \ (cast(void, \ (cast(size_t, (n)+1) > MAX_SIZET/(e)) ? (luaM_toobig(L), 0) : 0), \ luaM_realloc_(L, (b), (on)*(e), (n)*(e))) #define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0) #define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0) #define luaM_freearray(L, b, n) luaM_reallocv(L, (b), n, 0, sizeof((b)[0])) #define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s)) #define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t))) #define luaM_newvector(L,n,t) \ cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t))) #define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s)) #define luaM_growvector(L,v,nelems,size,t,limit,e) \ if ((nelems)+1 > (size)) \ ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e))) #define luaM_reallocvector(L, v,oldn,n,t) \ ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t)))) LUAI_FUNC l_noret luaM_toobig (lua_State *L); /* not to be called directly */ LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize, size_t size); LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elem, int limit, const char *what); #endif |