details
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16
lmem.c
16
lmem.c
@@ -1,5 +1,5 @@
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/*
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** $Id: lmem.c,v 1.67 2004/12/01 15:46:18 roberto Exp roberto $
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** $Id: lmem.c,v 1.68 2005/01/14 14:21:16 roberto Exp roberto $
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** Interface to Memory Manager
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** See Copyright Notice in lua.h
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*/
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@@ -22,19 +22,19 @@
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/*
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** About the realloc function:
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** void * realloc (void *ud, void *ptr, size_t osize, size_t nsize);
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** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
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** (`osize' is the old size, `nsize' is the new size)
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**
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** Lua ensures that (ptr == NULL) iff (osize == 0).
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**
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** * realloc(ud, NULL, 0, x) creates a new block of size `x'
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** * frealloc(ud, NULL, 0, x) creates a new block of size `x'
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**
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** * realloc(ud, p, x, 0) frees the block `p'
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** (in this specific case, realloc must return NULL).
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** particularly, realloc(ud, NULL, 0, 0) does nothing
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** * frealloc(ud, p, x, 0) frees the block `p'
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** (in this specific case, frealloc must return NULL).
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** particularly, frealloc(ud, NULL, 0, 0) does nothing
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** (which is equivalent to free(NULL) in ANSI C)
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**
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** realloc returns NULL if it cannot create or reallocate the area
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** frealloc returns NULL if it cannot create or reallocate the area
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** (any reallocation to an equal or smaller size cannot fail!)
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*/
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@@ -76,7 +76,7 @@ void *luaM_toobig (lua_State *L) {
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void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
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global_State *g = G(L);
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lua_assert((osize == 0) == (block == NULL));
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block = (*g->realloc)(g->ud, block, osize, nsize);
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block = (*g->frealloc)(g->ud, block, osize, nsize);
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if (block == NULL && nsize > 0)
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luaD_throw(L, LUA_ERRMEM);
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lua_assert((nsize == 0) == (block == NULL));
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