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#ifndef XSH_MEM_H
#define XSH_MEM_H 1
#include "util.h" /* XSH_ASSERT() */
#ifdef DEBUGGING
# ifdef Poison
# define XSH_POISON(D, N, T) Poison((D), (N), T)
# endif
# ifdef PoisonNew
# define XSH_POISON_NEW(D, N, T) PoisonNew((D), (N), T)
# define XSH_HAS_POISON_NEW 1
# endif
# ifdef PoisonFree
# define XSH_POISON_FREE(D, N, T) PoisonFree((D), (N), T)
# define XSH_HAS_POISON_FREE 1
# endif
#endif
#ifdef XSH_POISON
# ifndef XSH_POISON_NEW
# define XSH_POISON_NEW(D, N, T) XSH_POISON(D, N, T)
# define XSH_HAS_POISON_NEW 1
# endif
# ifndef XSH_POISON_FREE
# define XSH_POISON_FREE(D, N, T) XSH_POISON(D, N, T)
# define XSH_HAS_POISON_FREE 1
# endif
#endif
#ifndef XSH_HAS_POISON_NEW
# define XSH_HAS_POISON_NEW 0
#endif
#ifndef XSH_HAS_POISON_FREE
# define XSH_HAS_POISON_FREE 0
#endif
/* --- Shared memory ------------------------------------------------------- */
/* Context for PerlMemShared_*() functions */
#ifdef PERL_IMPLICIT_SYS
# define pPMS pTHX
# define pPMS_ pTHX_
# define aPMS aTHX
# define aPMS_ aTHX_
#else
# define pPMS void
# define pPMS_
# define aPMS
# define aPMS_
#endif
/* ... xsh_shared_alloc() .................................................. */
#if XSH_HAS_POISON_NEW
static void *xsh_shared_alloc(pPMS_ size_t size) {
#define xsh_shared_alloc(S) xsh_shared_alloc(aPMS_ (S))
void *p;
p = PerlMemShared_malloc(size);
XSH_ASSERT(p);
XSH_POISON_NEW(p, size, char);
return p;
}
#else /* XSH_HAS_POISON_NEW */
#define xsh_shared_alloc(S) PerlMemShared_malloc(S)
#endif /* !XSH_HAS_POISON_NEW */
#define XSH_SHARED_ALLOC(D, N, T) ((D) = xsh_shared_alloc((N) * sizeof(T)))
/* ... xsh_shared_calloc() ................................................. */
#define xsh_shared_calloc(C, S) PerlMemShared_calloc((C), (S))
#define XSH_SHARED_CALLOC(D, N, T) ((D) = xsh_shared_calloc((N), sizeof(T)))
/* ... xsh_shared_free() ................................................... */
#if XSH_HAS_POISON_FREE
static void xsh_shared_free(pPMS_ void *p, size_t size) {
#define xsh_shared_free(P, S) xsh_shared_free(aPMS_ (P), (S))
if (p)
XSH_POISON_FREE(p, size, char);
PerlMemShared_free(p);
return;
}
#else /* XSH_HAS_POISON_FREE */
#define xsh_shared_free(P, S) PerlMemShared_free(P)
#endif /* !XSH_HAS_POISON_FREE */
#define XSH_SHARED_FREE(D, N, T) (xsh_shared_free((D), (N) * sizeof(T)), (D) = NULL)
/* ... xsh_shared_realloc() ................................................ */
#if XSH_HAS_POISON_NEW && XSH_HAS_POISON_FREE
static void *xsh_shared_realloc(pPMS_ void *p, size_t old_size, size_t new_size) {
#define xsh_shared_realloc(P, OS, NS) xsh_shared_realloc(aPMS_ (P), (OS), (NS))
void *q;
if (!p)
return xsh_shared_alloc(new_size);
if (!new_size) {
xsh_shared_free(p, old_size);
return xsh_shared_alloc(1);
}
if (new_size < old_size)
XSH_POISON_FREE(((char *) p) + new_size, old_size - new_size, char);
q = PerlMemShared_realloc(p, new_size);
XSH_ASSERT(q);
if (old_size < new_size)
XSH_POISON_NEW(((char *) q) + old_size, new_size - old_size, char);
return q;
}
#else /* XSH_HAS_POISON_NEW && XSH_HAS_POISON_FREE */
#define xsh_shared_realloc(P, OS, NS) PerlMemShared_realloc((P), (NS))
#endif /* !XSH_HAS_POISON_NEW || !XSH_HAS_POISON_FREE */
#define XSH_SHARED_REALLOC(D, OL, NL, T) ((D) = xsh_shared_realloc((D), (OL) * sizeof(T), (NL) * sizeof(T)))
/* ... xsh_shared_recalloc() ............................................... */
static void *xsh_shared_recalloc(pPMS_ void *p, size_t old_size, size_t new_size) {
#define xsh_shared_recalloc(P, OS, NS) xsh_shared_recalloc(aPMS_ (P), (OS), (NS))
void *q;
#ifdef XSH_POISON_FREE
if (new_size < old_size)
XSH_POISON_FREE(((char *) p) + new_size, old_size - new_size, char);
#endif /* XSH_POISON_FREE */
q = PerlMemShared_realloc(p, new_size);
XSH_ASSERT(q);
if (old_size < new_size)
Zero(((char *) q) + old_size, new_size - old_size, char);
return q;
}
#define XSH_SHARED_RECALLOC(D, OL, NL, T) ((D) = xsh_shared_recalloc((D), (OL) * sizeof(T), (NL) * sizeof(T)))
/* --- Interpreter-local memory -------------------------------------------- */
#ifndef Newx
# define Newx(D, N, T) New(0, (D), (N), T)
#endif
#ifndef PERL_POISON
#if XSH_HAS_POISON_NEW
# define XSH_LOCAL_ALLOC(D, N, T) (Newx((D), (N), T), XSH_POISON_NEW((D), (N), T))
#endif
#if XSH_HAS_POISON_FREE
# define XSH_LOCAL_FREE(D, N, T) (XSH_POISON_FREE((D), (N), T), Safefree(D))
#endif
#if XSH_HAS_POISON_NEW && XSH_HAS_POISON_FREE
# define XSH_LOCAL_REALLOC(D, OL, NL, T) ((((D) && ((NL) < (OL))) ? XSH_POISON_FREE(((T *) (D)) + (NL), (OL) - (NL), T) : NOOP), Renew((D), (NL), T), (((OL) < (NL)) ? XSH_POISON_NEW(((T *) (D)) + (OL), (NL) - (OL), T) : NOOP))
#endif
#endif /* !PERL_POISON */
#ifndef XSH_LOCAL_ALLOC
# define XSH_LOCAL_ALLOC(D, N, T) Newx((D), (N), T)
#endif
#define XSH_LOCAL_CALLOC(D, N, T) Newxz((D), (N), T)
#ifndef XSH_LOCAL_FREE
# define XSH_LOCAL_FREE(D, N, T) Safefree(D)
#endif
#ifndef XSH_LOCAL_REALLOC
# define XSH_LOCAL_REALLOC(D, OL, NL, T) Renew((D), (NL), T)
#endif
#endif /* XSH_MEM_H */
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