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static SV *wrap_thing(U16 mgcode, void *ptr, HV *stash, SV *temple) {
SV *ref;
MAGIC **mgp;
MAGIC *mg;
assert(ptr);
assert(stash);
if (!temple)
temple = (SV*)newHV();
else
SvREFCNT_inc(temple);
if (SvOBJECT(temple))
croak("Can't attach to blessed reference");
assert(!SvROK(temple));
assert(mg_find(temple, '~') == 0); /* multiplicity disallowed! */
ref = newRV_noinc(temple);
sv_bless(ref, stash);
mgp = &SvMAGIC(temple);
while ((mg = *mgp))
mgp = &mg->mg_moremagic;
New(0, mg, 1, MAGIC);
Zero(mg, 1, MAGIC);
mg->mg_type = '~';
mg->mg_ptr = (char*) ptr; /* NOT refcnt'd */
mg->mg_private = mgcode;
*mgp = mg;
return ref;
}
static void* sv_2thing(U16 mgcode, SV *sv) {
MAGIC *mg;
SV *origsv = sv;
if (!sv || !SvROK(sv))
croak("sv_2thing: not a reference?");
sv = SvRV(sv);
if (SvTYPE(sv) < SVt_PVMG)
croak("sv_2thing: not a thing");
if (!SvOBJECT(sv))
croak("sv_2thing: not an object");
mg = mg_find(sv, '~');
if (mg) {
if (mg->mg_private != mgcode) {
croak("Can't find event magic (SV=0x%x)", sv);
}
return (void*) mg->mg_ptr;
}
croak("sv_2thing: can't decode SV=0x%x", origsv);
return 0;
}
#define MG_WATCHER_CODE ((((unsigned)'e')<<8) + (unsigned)'v')
static SV *wrap_watcher(void *ptr, HV *stash, SV *temple) {
return wrap_thing(MG_WATCHER_CODE, ptr, stash, temple);
}
SV *watcher_2sv(pe_watcher *wa) { /**SLOW IS OKAY**/
assert(!WaDESTROYED(wa));
if (!wa->mysv) {
wa->mysv = wrap_watcher(wa, wa->vtbl->stash, 0);
if (WaDEBUGx(wa) >= 4) {
STRLEN n_a;
warn("Watcher=0x%x '%s' wrapped with SV=0x%x",
wa, SvPV(wa->desc, n_a), SvRV(wa->mysv));
}
}
return SvREFCNT_inc(sv_2mortal(wa->mysv));
}
void* sv_2watcher(SV *sv) {
return sv_2thing(MG_WATCHER_CODE, sv);
}
#define MG_GENERICSRC_CODE 2422 /* randomly chosen */
static SV *wrap_genericsrc(void *ptr, HV *stash, SV *temple) {
return wrap_thing(MG_GENERICSRC_CODE, ptr, stash, temple);
}
static HV *pe_genericsrc_stash;
static SV *genericsrc_2sv(pe_genericsrc *src) { /**SLOW IS OKAY**/
if (!src->mysv) {
src->mysv = wrap_genericsrc(src, pe_genericsrc_stash, 0);
}
return SvREFCNT_inc(sv_2mortal(src->mysv));
}
static void* sv_2genericsrc(SV *sv) {
return sv_2thing(MG_GENERICSRC_CODE, sv);
}
/*
Events have a short lifetime. mysv is kept alive until the event
has been serviced. Once perl finally releases mysv then the event
is deallocated (or, more likely, recycled).
*/
SV *event_2sv(pe_event *ev) { /**MAKE FAST**/
if (!ev->mysv) {
SV *rv = newSV(0);
SV *sv = newSVrv(rv,0);
sv_bless(rv, ev->vtbl->stash);
sv_setiv(sv, PTR2IV(ev));
ev->mysv = rv;
if (WaDEBUGx(ev->up) >= 4) {
STRLEN n_a;
warn("Event=0x%x '%s' wrapped with SV=0x%x",
ev, SvPV(ev->up->desc, n_a), SvRV(ev->mysv));
}
}
return SvREFCNT_inc(sv_2mortal(ev->mysv));
}
void *sv_2event(SV *sv) {
void *ptr;
assert(sv);
assert(SvROK(sv));
sv = SvRV(sv);
ptr = INT2PTR(void *, SvIV(sv));
assert(ptr);
return ptr;
}
/***************************************************************/
#define VERIFYINTERVAL(name, f) \
STMT_START { NV ign; sv_2interval(name, f, &ign); } STMT_END
int sv_2interval(char *label, SV *in, NV *out) {
SV *sv = in;
if (!sv) return 0;
if (SvGMAGICAL(sv))
mg_get(sv);
if (!SvOK(sv)) return 0;
if (SvROK(sv))
sv = SvRV(sv);
if (!SvOK(sv)) {
warn("Event: %s interval undef", label);
*out = 0;
} else if (SvNOK(sv)) {
*out = SvNVX(sv);
} else if (SvIOK(sv)) {
*out = SvIVX(sv);
} else if (looks_like_number(sv)) {
*out = SvNV(sv);
} else {
sv_dump(in);
croak("Event: %s interval must be a number or reference to a number",
label);
return 0;
}
if (*out < 0) {
warn("Event: %s has negative timeout %.2f (clipped to zero)",
label, *out);
*out = 0;
}
return 1;
}
SV* events_mask_2sv(int mask) {
SV *ret = newSV(0);
SvUPGRADE(ret, SVt_PVIV);
sv_setpvn(ret, "", 0);
if (mask & PE_R) sv_catpv(ret, "r");
if (mask & PE_W) sv_catpv(ret, "w");
if (mask & PE_E) sv_catpv(ret, "e");
if (mask & PE_T) sv_catpv(ret, "t");
SvIVX(ret) = mask;
SvIOK_on(ret);
return ret;
}
int sv_2events_mask(SV *sv, int bits) {
if (SvPOK(sv)) {
UV got=0;
int xx;
STRLEN el;
char *ep = SvPV(sv,el);
for (xx=0; xx < el; xx++) {
switch (ep[xx]) {
case 'r': if (bits & PE_R) { got |= PE_R; continue; }
case 'w': if (bits & PE_W) { got |= PE_W; continue; }
case 'e': if (bits & PE_E) { got |= PE_E; continue; }
case 't': if (bits & PE_T) { got |= PE_T; continue; }
}
warn("Ignored '%c' in poll mask", ep[xx]);
}
return got;
}
else if (SvIOK(sv)) {
UV extra = SvIVX(sv) & ~bits;
if (extra) warn("Ignored extra bits (0x%x) in poll mask", extra);
return SvIVX(sv) & bits;
}
else {
sv_dump(sv);
croak("Must be a string /[rwet]/ or bit mask");
return 0; /* NOTREACHED */
}
}
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