-/* This file is part of the indirect Perl module.
- * See http://search.cpan.org/dist/indirect/ */
-
-/* This header provides a specialized version of Scope::Upper::reap that can be
- * called directly from XS.
- * See http://search.cpan.org/dist/Scope-Upper/ for details. */
-
-#ifndef REAP_H
-#define REAP_H 1
-
-#define REAP_DESTRUCTOR_SIZE 3
-
-typedef struct {
- I32 depth;
- I32 *origin;
- void (*cb)(pTHX_ void *);
- void *ud;
- char *dummy;
-} reap_ud;
-
-STATIC void reap_pop(pTHX_ void *);
-
-STATIC void reap_pop(pTHX_ void *ud_) {
- reap_ud *ud = ud_;
- I32 depth, *origin, mark, base;
-
- depth = ud->depth;
- origin = ud->origin;
- mark = origin[depth];
- base = origin[depth - 1];
-
- if (base < mark) {
- PL_savestack_ix = mark;
- leave_scope(base);
- }
- PL_savestack_ix = base;
-
- if ((ud->depth = --depth) > 0) {
- SAVEDESTRUCTOR_X(reap_pop, ud);
- } else {
- void (*cb)(pTHX_ void *) = ud->cb;
- void *cb_ud = ud->ud;
-
- PerlMemShared_free(ud->origin);
- PerlMemShared_free(ud);
-
- SAVEDESTRUCTOR_X(cb, cb_ud);
- }
-}
-
-STATIC void reap(pTHX_ I32 depth, void (*cb)(pTHX_ void *), void *cb_ud) {
-#define reap(D, CB, UD) reap(aTHX_ (D), (CB), (UD))
- reap_ud *ud;
- I32 i;
-
- if (depth > PL_scopestack_ix)
- depth = PL_scopestack_ix;
-
- ud = PerlMemShared_malloc(sizeof *ud);
- ud->depth = depth;
- ud->origin = PerlMemShared_malloc((depth + 1) * sizeof *ud->origin);
- ud->cb = cb;
- ud->ud = cb_ud;
- ud->dummy = NULL;
-
- for (i = depth; i >= 1; --i) {
- I32 j = PL_scopestack_ix - i;
- ud->origin[depth - i] = PL_scopestack[j];
- PL_scopestack[j] += REAP_DESTRUCTOR_SIZE;
- }
- ud->origin[depth] = PL_savestack_ix;
-
- while (PL_savestack_ix + REAP_DESTRUCTOR_SIZE
- <= PL_scopestack[PL_scopestack_ix - 1]) {
- save_pptr(&ud->dummy);
- }
-
- SAVEDESTRUCTOR_X(reap_pop, ud);
-}
-
-#endif /* REAP_H */