| Commit | Line | Data |
|---|
| d1d0e437 |
1 | /* For development testing */ |
| 2 | #ifdef PACKAGE_STASH_DEBUGGING |
| 3 | # define debug_print(x) printf x |
| 4 | #else |
| 5 | # define debug_print(x) |
| 6 | #endif |
| 7 | |
| 8 | /* Originally stolen from pp_ctl.c; now significantly different */ |
| 9 | |
| 10 | I32 |
| 11 | dopoptosub_at(pTHX_ PERL_CONTEXT *cxstk, I32 startingblock) |
| 12 | { |
| 13 | dTHR; |
| 14 | I32 i; |
| 15 | PERL_CONTEXT *cx; |
| 16 | for (i = startingblock; i >= 0; i--) { |
| 17 | cx = &cxstk[i]; |
| 18 | switch (CxTYPE(cx)) { |
| 19 | default: |
| 20 | continue; |
| 21 | case CXt_SUB: |
| 22 | /* In Perl 5.005, formats just used CXt_SUB */ |
| 23 | #ifdef CXt_FORMAT |
| 24 | case CXt_FORMAT: |
| 25 | #endif |
| 26 | debug_print(("**dopoptosub_at: found sub #%ld\n", (long)i)); |
| 27 | return i; |
| 28 | } |
| 29 | } |
| 30 | debug_print(("**dopoptosub_at: not found #%ld\n", (long)i)); |
| 31 | return i; |
| 32 | } |
| 33 | |
| 34 | I32 |
| 35 | dopoptosub(pTHX_ I32 startingblock) |
| 36 | { |
| 37 | dTHR; |
| 38 | return dopoptosub_at(aTHX_ cxstack, startingblock); |
| 39 | } |
| 40 | |
| 41 | /* This function is based on the code of pp_caller */ |
| 42 | PERL_CONTEXT* |
| 43 | upcontext(pTHX_ I32 count, COP **cop_p, PERL_CONTEXT **ccstack_p, |
| 44 | I32 *cxix_from_p, I32 *cxix_to_p) |
| 45 | { |
| 46 | PERL_SI *top_si = PL_curstackinfo; |
| 47 | I32 cxix = dopoptosub(aTHX_ cxstack_ix); |
| 48 | PERL_CONTEXT *ccstack = cxstack; |
| 49 | |
| 50 | if (cxix_from_p) *cxix_from_p = cxstack_ix+1; |
| 51 | if (cxix_to_p) *cxix_to_p = cxix; |
| 52 | for (;;) { |
| 53 | /* we may be in a higher stacklevel, so dig down deeper */ |
| 54 | while (cxix < 0 && top_si->si_type != PERLSI_MAIN) { |
| 55 | top_si = top_si->si_prev; |
| 56 | ccstack = top_si->si_cxstack; |
| 57 | cxix = dopoptosub_at(aTHX_ ccstack, top_si->si_cxix); |
| 58 | if (cxix_to_p && cxix_from_p) *cxix_from_p = *cxix_to_p; |
| 59 | if (cxix_to_p) *cxix_to_p = cxix; |
| 60 | } |
| 61 | if (cxix < 0 && count == 0) { |
| 62 | if (ccstack_p) *ccstack_p = ccstack; |
| 63 | return (PERL_CONTEXT *)0; |
| 64 | } |
| 65 | else if (cxix < 0) |
| 66 | return (PERL_CONTEXT *)-1; |
| 67 | if (PL_DBsub && cxix >= 0 && |
| 68 | ccstack[cxix].blk_sub.cv == GvCV(PL_DBsub)) |
| 69 | count++; |
| 70 | if (!count--) |
| 71 | break; |
| 72 | |
| 73 | if (cop_p) *cop_p = ccstack[cxix].blk_oldcop; |
| 74 | cxix = dopoptosub_at(aTHX_ ccstack, cxix - 1); |
| 75 | if (cxix_to_p && cxix_from_p) *cxix_from_p = *cxix_to_p; |
| 76 | if (cxix_to_p) *cxix_to_p = cxix; |
| 77 | } |
| 78 | if (ccstack_p) *ccstack_p = ccstack; |
| 79 | return &ccstack[cxix]; |
| 80 | } |
| 81 | |
| 82 | /* end thievery */ |
projects / gitmo/Package-Stash-XS.git / blame