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root |
1.1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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1.7 |
#if 1 |
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1.3 |
# define CHK(x) (void *)0 |
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#else |
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# define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
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#endif |
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1.7 |
#define MAY_FLUSH /* increases codesize */ |
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1.8 |
#define SUB_INIT "Coro::State::_newcoro" |
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1.7 |
#define SAVE_DEFAV 0x00000001 |
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#define SAVE_DEFSV 0x00000002 |
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#define SAVE_ERRSV 0x00000004 |
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#define SAVE_ALL -1 |
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root |
1.1 |
struct coro { |
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1.7 |
/* optionally saved, might be zero */ |
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1.3 |
AV *defav; |
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1.7 |
SV *defsv; |
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SV *errsv; |
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1.1 |
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1.7 |
/* saved global state not related to stacks */ |
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U8 dowarn; |
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/* the stacks and related info (callchain etc..) */ |
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root |
1.1 |
PERL_SI *curstackinfo; |
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AV *curstack; |
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AV *mainstack; |
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SV **stack_sp; |
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OP *op; |
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SV **curpad; |
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SV **stack_base; |
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SV **stack_max; |
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SV **tmps_stack; |
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I32 tmps_floor; |
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I32 tmps_ix; |
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I32 tmps_max; |
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I32 *markstack; |
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I32 *markstack_ptr; |
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I32 *markstack_max; |
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I32 *scopestack; |
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I32 scopestack_ix; |
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I32 scopestack_max; |
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ANY *savestack; |
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I32 savestack_ix; |
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I32 savestack_max; |
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OP **retstack; |
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I32 retstack_ix; |
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I32 retstack_max; |
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COP *curcop; |
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root |
1.7 |
/* data associated with this coroutine (initial args) */ |
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1.3 |
AV *args; |
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root |
1.1 |
}; |
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typedef struct coro *Coro__State; |
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typedef struct coro *Coro__State_or_hashref; |
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root |
1.3 |
static HV *padlist_cache; |
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/* mostly copied from op.c:cv_clone2 */ |
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STATIC AV * |
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clone_padlist (AV *protopadlist) |
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{ |
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AV *av; |
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I32 ix; |
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AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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SV **pname = AvARRAY (protopad_name); |
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SV **ppad = AvARRAY (protopad); |
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I32 fname = AvFILLp (protopad_name); |
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I32 fpad = AvFILLp (protopad); |
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AV *newpadlist, *newpad_name, *newpad; |
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SV **npad; |
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newpad_name = newAV (); |
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for (ix = fname; ix >= 0; ix--) |
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av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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newpad = newAV (); |
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av_fill (newpad, AvFILLp (protopad)); |
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npad = AvARRAY (newpad); |
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newpadlist = newAV (); |
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AvREAL_off (newpadlist); |
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av_store (newpadlist, 0, (SV *) newpad_name); |
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av_store (newpadlist, 1, (SV *) newpad); |
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av = newAV (); /* will be @_ */ |
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av_extend (av, 0); |
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av_store (newpad, 0, (SV *) av); |
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AvFLAGS (av) = AVf_REIFY; |
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for (ix = fpad; ix > 0; ix--) |
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{ |
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SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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if (namesv && namesv != &PL_sv_undef) |
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{ |
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char *name = SvPVX (namesv); /* XXX */ |
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if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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{ /* lexical from outside? */ |
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npad[ix] = SvREFCNT_inc (ppad[ix]); |
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} |
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else |
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{ /* our own lexical */ |
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SV *sv; |
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if (*name == '&') |
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sv = SvREFCNT_inc (ppad[ix]); |
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else if (*name == '@') |
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sv = (SV *) newAV (); |
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else if (*name == '%') |
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sv = (SV *) newHV (); |
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else |
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sv = NEWSV (0, 0); |
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if (!SvPADBUSY (sv)) |
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SvPADMY_on (sv); |
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npad[ix] = sv; |
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} |
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} |
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else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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{ |
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npad[ix] = SvREFCNT_inc (ppad[ix]); |
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} |
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else |
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{ |
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SV *sv = NEWSV (0, 0); |
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SvPADTMP_on (sv); |
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npad[ix] = sv; |
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} |
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} |
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137 |
root |
1.7 |
#if 0 /* return -ENOTUNDERSTOOD */ |
138 |
root |
1.3 |
/* Now that vars are all in place, clone nested closures. */ |
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for (ix = fpad; ix > 0; ix--) { |
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SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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if (namesv |
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&& namesv != &PL_sv_undef |
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&& !(SvFLAGS(namesv) & SVf_FAKE) |
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&& *SvPVX(namesv) == '&' |
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&& CvCLONE(ppad[ix])) |
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{ |
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CV *kid = cv_clone((CV*)ppad[ix]); |
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SvREFCNT_dec(ppad[ix]); |
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CvCLONE_on(kid); |
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SvPADMY_on(kid); |
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npad[ix] = (SV*)kid; |
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} |
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} |
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#endif |
156 |
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157 |
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return newpadlist; |
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} |
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160 |
root |
1.7 |
#ifdef MAY_FLUSH |
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root |
1.3 |
STATIC AV * |
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free_padlist (AV *padlist) |
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{ |
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/* may be during global destruction */ |
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if (SvREFCNT(padlist)) |
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{ |
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I32 i = AvFILLp(padlist); |
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while (i >= 0) |
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{ |
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SV **svp = av_fetch(padlist, i--, FALSE); |
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SV *sv = svp ? *svp : Nullsv; |
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if (sv) |
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SvREFCNT_dec(sv); |
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} |
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SvREFCNT_dec((SV*)padlist); |
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} |
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} |
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root |
1.7 |
#endif |
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root |
1.3 |
|
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root |
1.7 |
/* the next two functions merely cache the padlists */ |
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root |
1.4 |
STATIC void |
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get_padlist (CV *cv) |
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root |
1.3 |
{ |
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root |
1.4 |
SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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if (he && AvFILLp ((AV *)*he) >= 0) |
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CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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else |
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CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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} |
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STATIC void |
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put_padlist (CV *cv) |
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{ |
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SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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if (SvTYPE (*he) != SVt_PVAV) |
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{ |
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SvREFCNT_dec (*he); |
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*he = (SV *)newAV (); |
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} |
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av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
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root |
1.3 |
} |
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207 |
root |
1.7 |
#ifdef MAY_FLUSH |
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STATIC void |
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flush_padlist_cache () |
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{ |
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HV *hv = padlist_cache; |
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padlist_cache = newHV (); |
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if (hv_iterinit (hv)) |
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{ |
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HE *he; |
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AV *padlist; |
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while (!!(he = hv_iternext (hv))) |
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{ |
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AV *av = (AV *)HeVAL(he); |
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/* casting is fun. */ |
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while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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free_padlist (padlist); |
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} |
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} |
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SvREFCNT_dec (hv); |
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} |
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#endif |
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233 |
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#define SB do { |
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#define SE } while (0) |
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#define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE |
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#define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE |
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#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
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static void |
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load_state(pTHX_ Coro__State c) |
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{ |
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PL_dowarn = c->dowarn; |
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PL_curstackinfo = c->curstackinfo; |
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PL_curstack = c->curstack; |
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PL_mainstack = c->mainstack; |
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PL_stack_sp = c->stack_sp; |
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PL_op = c->op; |
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PL_curpad = c->curpad; |
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PL_stack_base = c->stack_base; |
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PL_stack_max = c->stack_max; |
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PL_tmps_stack = c->tmps_stack; |
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PL_tmps_floor = c->tmps_floor; |
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PL_tmps_ix = c->tmps_ix; |
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PL_tmps_max = c->tmps_max; |
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PL_markstack = c->markstack; |
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PL_markstack_ptr = c->markstack_ptr; |
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PL_markstack_max = c->markstack_max; |
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PL_scopestack = c->scopestack; |
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PL_scopestack_ix = c->scopestack_ix; |
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PL_scopestack_max = c->scopestack_max; |
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PL_savestack = c->savestack; |
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PL_savestack_ix = c->savestack_ix; |
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PL_savestack_max = c->savestack_max; |
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PL_retstack = c->retstack; |
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PL_retstack_ix = c->retstack_ix; |
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PL_retstack_max = c->retstack_max; |
270 |
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PL_curcop = c->curcop; |
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if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
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if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
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if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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{ |
277 |
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dSP; |
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CV *cv; |
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280 |
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/* now do the ugly restore mess */ |
281 |
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while ((cv = (CV *)POPs)) |
282 |
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{ |
283 |
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AV *padlist = (AV *)POPs; |
284 |
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285 |
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if (padlist) |
286 |
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{ |
287 |
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put_padlist (cv); /* mark this padlist as available */ |
288 |
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CvPADLIST(cv) = padlist; |
289 |
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#ifdef USE_THREADS |
290 |
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/*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
291 |
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#endif |
292 |
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} |
293 |
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294 |
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++CvDEPTH(cv); |
295 |
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} |
296 |
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297 |
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PUTBACK; |
298 |
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} |
299 |
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} |
300 |
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301 |
root |
1.3 |
static void |
302 |
root |
1.7 |
save_state(pTHX_ Coro__State c, int flags) |
303 |
root |
1.3 |
{ |
304 |
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{ |
305 |
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dSP; |
306 |
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I32 cxix = cxstack_ix; |
307 |
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PERL_SI *top_si = PL_curstackinfo; |
308 |
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PERL_CONTEXT *ccstk = cxstack; |
309 |
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310 |
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/* |
311 |
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* the worst thing you can imagine happens first - we have to save |
312 |
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* (and reinitialize) all cv's in the whole callchain :( |
313 |
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*/ |
314 |
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315 |
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PUSHs (Nullsv); |
316 |
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/* this loop was inspired by pp_caller */ |
317 |
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for (;;) |
318 |
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{ |
319 |
root |
1.7 |
do |
320 |
root |
1.3 |
{ |
321 |
root |
1.4 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
322 |
root |
1.3 |
|
323 |
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if (CxTYPE(cx) == CXt_SUB) |
324 |
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{ |
325 |
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CV *cv = cx->blk_sub.cv; |
326 |
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if (CvDEPTH(cv)) |
327 |
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{ |
328 |
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#ifdef USE_THREADS |
329 |
root |
1.7 |
/*XPUSHs ((SV *)CvOWNER(cv));*/ |
330 |
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/*CvOWNER(cv) = 0;*/ |
331 |
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/*error must unlock this cv etc.. etc...*/ |
332 |
root |
1.3 |
#endif |
333 |
root |
1.7 |
EXTEND (SP, CvDEPTH(cv)*2); |
334 |
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335 |
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while (--CvDEPTH(cv)) |
336 |
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{ |
337 |
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/* this tells the restore code to increment CvDEPTH */ |
338 |
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PUSHs (Nullsv); |
339 |
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PUSHs ((SV *)cv); |
340 |
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} |
341 |
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342 |
root |
1.3 |
PUSHs ((SV *)CvPADLIST(cv)); |
343 |
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PUSHs ((SV *)cv); |
344 |
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345 |
root |
1.7 |
get_padlist (cv); /* this is a monster */ |
346 |
root |
1.3 |
} |
347 |
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} |
348 |
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else if (CxTYPE(cx) == CXt_FORMAT) |
349 |
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{ |
350 |
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/* I never used formats, so how should I know how these are implemented? */ |
351 |
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/* my bold guess is as a simple, plain sub... */ |
352 |
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croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
353 |
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} |
354 |
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} |
355 |
root |
1.7 |
while (cxix >= 0); |
356 |
root |
1.3 |
|
357 |
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if (top_si->si_type == PERLSI_MAIN) |
358 |
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break; |
359 |
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360 |
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top_si = top_si->si_prev; |
361 |
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ccstk = top_si->si_cxstack; |
362 |
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cxix = top_si->si_cxix; |
363 |
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} |
364 |
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365 |
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PUTBACK; |
366 |
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} |
367 |
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368 |
root |
1.7 |
c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
369 |
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c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
370 |
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c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
371 |
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372 |
root |
1.3 |
c->dowarn = PL_dowarn; |
373 |
root |
1.7 |
|
374 |
root |
1.3 |
c->curstackinfo = PL_curstackinfo; |
375 |
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c->curstack = PL_curstack; |
376 |
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c->mainstack = PL_mainstack; |
377 |
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c->stack_sp = PL_stack_sp; |
378 |
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c->op = PL_op; |
379 |
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c->curpad = PL_curpad; |
380 |
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c->stack_base = PL_stack_base; |
381 |
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c->stack_max = PL_stack_max; |
382 |
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c->tmps_stack = PL_tmps_stack; |
383 |
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c->tmps_floor = PL_tmps_floor; |
384 |
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|
c->tmps_ix = PL_tmps_ix; |
385 |
|
|
c->tmps_max = PL_tmps_max; |
386 |
|
|
c->markstack = PL_markstack; |
387 |
|
|
c->markstack_ptr = PL_markstack_ptr; |
388 |
|
|
c->markstack_max = PL_markstack_max; |
389 |
|
|
c->scopestack = PL_scopestack; |
390 |
|
|
c->scopestack_ix = PL_scopestack_ix; |
391 |
|
|
c->scopestack_max = PL_scopestack_max; |
392 |
|
|
c->savestack = PL_savestack; |
393 |
|
|
c->savestack_ix = PL_savestack_ix; |
394 |
|
|
c->savestack_max = PL_savestack_max; |
395 |
|
|
c->retstack = PL_retstack; |
396 |
|
|
c->retstack_ix = PL_retstack_ix; |
397 |
|
|
c->retstack_max = PL_retstack_max; |
398 |
|
|
c->curcop = PL_curcop; |
399 |
|
|
} |
400 |
root |
1.1 |
|
401 |
root |
1.7 |
/* |
402 |
|
|
* destroy the stacks, the callchain etc... |
403 |
|
|
* still there is a memleak of 128 bytes... |
404 |
|
|
*/ |
405 |
root |
1.1 |
STATIC void |
406 |
root |
1.4 |
destroy_stacks(pTHX) |
407 |
root |
1.1 |
{ |
408 |
root |
1.4 |
/* is this ugly, I ask? */ |
409 |
|
|
while (PL_scopestack_ix) |
410 |
|
|
LEAVE; |
411 |
|
|
|
412 |
root |
1.7 |
/* sure it is, but more important: is it correct?? :/ */ |
413 |
|
|
while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
414 |
|
|
FREETMPS; |
415 |
|
|
|
416 |
root |
1.4 |
while (PL_curstackinfo->si_next) |
417 |
|
|
PL_curstackinfo = PL_curstackinfo->si_next; |
418 |
|
|
|
419 |
|
|
while (PL_curstackinfo) |
420 |
|
|
{ |
421 |
|
|
PERL_SI *p = PL_curstackinfo->si_prev; |
422 |
|
|
|
423 |
root |
1.7 |
{ |
424 |
|
|
dSP; |
425 |
|
|
SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
426 |
|
|
PUTBACK; /* possibly superfluous */ |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
dounwind(-1); |
430 |
|
|
|
431 |
root |
1.4 |
SvREFCNT_dec(PL_curstackinfo->si_stack); |
432 |
|
|
Safefree(PL_curstackinfo->si_cxstack); |
433 |
|
|
Safefree(PL_curstackinfo); |
434 |
|
|
PL_curstackinfo = p; |
435 |
|
|
} |
436 |
|
|
|
437 |
|
|
Safefree(PL_tmps_stack); |
438 |
|
|
Safefree(PL_markstack); |
439 |
|
|
Safefree(PL_scopestack); |
440 |
|
|
Safefree(PL_savestack); |
441 |
|
|
Safefree(PL_retstack); |
442 |
root |
1.1 |
} |
443 |
|
|
|
444 |
root |
1.8 |
STATIC void |
445 |
|
|
transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
446 |
|
|
{ |
447 |
|
|
dSP; |
448 |
|
|
|
449 |
|
|
if (prev != next) |
450 |
|
|
{ |
451 |
|
|
/* |
452 |
|
|
* this could be done in newprocess which would lead to |
453 |
|
|
* extremely elegant and fast (just SAVE/LOAD) |
454 |
|
|
* code here, but lazy allocation of stacks has also |
455 |
|
|
* some virtues and the overhead of the if() is nil. |
456 |
|
|
*/ |
457 |
|
|
if (next->mainstack) |
458 |
|
|
{ |
459 |
|
|
SAVE (prev, flags); |
460 |
|
|
LOAD (next); |
461 |
|
|
/* mark this state as in-use */ |
462 |
|
|
next->mainstack = 0; |
463 |
|
|
next->tmps_ix = -2; |
464 |
|
|
} |
465 |
|
|
else if (next->tmps_ix == -2) |
466 |
|
|
{ |
467 |
|
|
croak ("tried to transfer to running coroutine"); |
468 |
|
|
} |
469 |
|
|
else |
470 |
|
|
{ |
471 |
|
|
/* |
472 |
|
|
* emulate part of the perl startup here. |
473 |
|
|
*/ |
474 |
|
|
UNOP myop; |
475 |
|
|
|
476 |
|
|
SAVE (prev, -1); /* first get rid of the old state */ |
477 |
|
|
|
478 |
|
|
init_stacks (); /* from perl.c */ |
479 |
|
|
SPAGAIN; |
480 |
|
|
|
481 |
|
|
PL_op = (OP *)&myop; |
482 |
|
|
/*PL_curcop = 0;*/ |
483 |
|
|
SvREFCNT_dec (GvAV (PL_defgv)); |
484 |
|
|
GvAV (PL_defgv) = next->args; |
485 |
|
|
|
486 |
|
|
Zero(&myop, 1, UNOP); |
487 |
|
|
myop.op_next = Nullop; |
488 |
|
|
myop.op_flags = OPf_WANT_VOID; |
489 |
|
|
|
490 |
|
|
PUSHMARK(SP); |
491 |
|
|
XPUSHs ((SV*)get_cv(SUB_INIT, TRUE)); |
492 |
|
|
/* |
493 |
|
|
* the next line is slightly wrong, as PL_op->op_next |
494 |
|
|
* is actually being executed so we skip the first op. |
495 |
|
|
* that doesn't matter, though, since it is only |
496 |
|
|
* pp_nextstate and we never return... |
497 |
|
|
* ah yes, and I don't care anyways ;) |
498 |
|
|
*/ |
499 |
|
|
PUTBACK; |
500 |
|
|
PL_op = pp_entersub(aTHX); |
501 |
|
|
SPAGAIN; |
502 |
|
|
|
503 |
|
|
ENTER; /* necessary e.g. for dounwind */ |
504 |
|
|
} |
505 |
|
|
} |
506 |
|
|
} |
507 |
root |
1.3 |
|
508 |
|
|
MODULE = Coro::State PACKAGE = Coro::State |
509 |
root |
1.1 |
|
510 |
|
|
PROTOTYPES: ENABLE |
511 |
|
|
|
512 |
root |
1.3 |
BOOT: |
513 |
root |
1.9 |
{ /* {} necessary for stoopid perl-5.6.x */ |
514 |
root |
1.7 |
HV * stash = gv_stashpvn("Coro::State", 10, TRUE); |
515 |
|
|
|
516 |
|
|
newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV)); |
517 |
|
|
newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV)); |
518 |
|
|
newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV)); |
519 |
|
|
|
520 |
root |
1.3 |
if (!padlist_cache) |
521 |
|
|
padlist_cache = newHV (); |
522 |
root |
1.9 |
} |
523 |
root |
1.3 |
|
524 |
root |
1.1 |
Coro::State |
525 |
root |
1.3 |
_newprocess(args) |
526 |
|
|
SV * args |
527 |
|
|
PROTOTYPE: $ |
528 |
root |
1.1 |
CODE: |
529 |
|
|
Coro__State coro; |
530 |
root |
1.3 |
|
531 |
|
|
if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
532 |
root |
1.7 |
croak ("Coro::State::_newprocess expects an arrayref"); |
533 |
root |
1.1 |
|
534 |
|
|
New (0, coro, 1, struct coro); |
535 |
|
|
|
536 |
|
|
coro->mainstack = 0; /* actual work is done inside transfer */ |
537 |
root |
1.3 |
coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
538 |
root |
1.1 |
|
539 |
|
|
RETVAL = coro; |
540 |
|
|
OUTPUT: |
541 |
|
|
RETVAL |
542 |
|
|
|
543 |
|
|
void |
544 |
root |
1.7 |
transfer(prev, next, flags = SAVE_DEFAV) |
545 |
root |
1.3 |
Coro::State_or_hashref prev |
546 |
|
|
Coro::State_or_hashref next |
547 |
root |
1.7 |
int flags |
548 |
root |
1.8 |
PROTOTYPE: @ |
549 |
root |
1.1 |
CODE: |
550 |
|
|
|
551 |
root |
1.8 |
transfer (aTHX_ prev, next, flags); |
552 |
root |
1.1 |
|
553 |
|
|
void |
554 |
|
|
DESTROY(coro) |
555 |
root |
1.3 |
Coro::State coro |
556 |
root |
1.1 |
CODE: |
557 |
|
|
|
558 |
|
|
if (coro->mainstack) |
559 |
|
|
{ |
560 |
|
|
struct coro temp; |
561 |
|
|
|
562 |
root |
1.7 |
SAVE(aTHX_ (&temp), SAVE_ALL); |
563 |
root |
1.3 |
LOAD(aTHX_ coro); |
564 |
root |
1.1 |
|
565 |
root |
1.4 |
destroy_stacks (); |
566 |
root |
1.1 |
|
567 |
root |
1.7 |
LOAD((&temp)); /* this will get rid of defsv etc.. */ |
568 |
root |
1.1 |
} |
569 |
|
|
|
570 |
|
|
Safefree (coro); |
571 |
root |
1.7 |
|
572 |
|
|
void |
573 |
|
|
flush() |
574 |
|
|
CODE: |
575 |
|
|
#ifdef MAY_FLUSH |
576 |
|
|
flush_padlist_cache (); |
577 |
|
|
#endif |
578 |
root |
1.1 |
|
579 |
root |
1.8 |
MODULE = Coro::State PACKAGE = Coro::Cont |
580 |
|
|
|
581 |
|
|
# this is dirty and should be in it's own .xs |
582 |
|
|
|
583 |
|
|
void |
584 |
|
|
result(...) |
585 |
|
|
PROTOTYPE: @ |
586 |
|
|
CODE: |
587 |
|
|
static SV *returnstk; |
588 |
|
|
SV *sv; |
589 |
|
|
AV *defav = GvAV (PL_defgv); |
590 |
|
|
struct coro *prev, *next; |
591 |
|
|
|
592 |
|
|
if (!returnstk) |
593 |
|
|
returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
594 |
|
|
|
595 |
|
|
/* set up @_ */ |
596 |
|
|
av_clear (defav); |
597 |
|
|
av_fill (defav, items - 1); |
598 |
|
|
while (items--) |
599 |
|
|
av_store (defav, items, SvREFCNT_inc (ST(items))); |
600 |
|
|
|
601 |
|
|
mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
602 |
|
|
sv = av_pop ((AV *)SvRV (returnstk)); |
603 |
|
|
prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
604 |
|
|
next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
605 |
|
|
SvREFCNT_dec (sv); |
606 |
|
|
transfer(prev, next, 0); |
607 |
root |
1.1 |
|