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#ifndef SCHMORP_PERL_H_ |
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#define SCHMORP_PERL_H_ |
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|
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/* WARNING |
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* This header file is a shared resource between many modules. |
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*/ |
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|
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/* useful stuff, used by schmorp mostly */ |
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|
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#include "patchlevel.h" |
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|
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#define PERL_VERSION_ATLEAST(a,b,c) \ |
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(PERL_REVISION > (a) \ |
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|| (PERL_REVISION == (a) \ |
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&& (PERL_VERSION > (b) \ |
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|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
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|
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#if !PERL_VERSION_ATLEAST (5,6,0) |
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# ifndef PL_ppaddr |
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# define PL_ppaddr ppaddr |
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# endif |
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# ifndef call_sv |
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# define call_sv perl_call_sv |
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# endif |
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# ifndef get_sv |
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# define get_sv perl_get_sv |
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# endif |
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# ifndef get_cv |
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# define get_cv perl_get_cv |
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# endif |
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# ifndef IS_PADGV |
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# define IS_PADGV(v) 0 |
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# endif |
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# ifndef IS_PADCONST |
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# define IS_PADCONST(v) 0 |
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# endif |
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#endif |
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|
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/* 5.11 */ |
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#ifndef CxHASARGS |
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# define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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#endif |
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|
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/* 5.10.0 */ |
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#ifndef SvREFCNT_inc_NN |
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# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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#endif |
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|
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/* 5.8.8 */ |
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#ifndef GV_NOTQUAL |
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# define GV_NOTQUAL 0 |
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#endif |
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#ifndef newSV |
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# define newSV(l) NEWSV(0,l) |
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#endif |
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#ifndef CvISXSUB_on |
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# define CvISXSUB_on(cv) (void)cv |
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#endif |
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#ifndef CvISXSUB |
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# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE) |
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#endif |
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#ifndef Newx |
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# define Newx(ptr,nitems,type) New (0,ptr,nitems,type) |
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#endif |
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|
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/* 5.8.7 */ |
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#ifndef SvRV_set |
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# define SvRV_set(s,v) SvRV(s) = (v) |
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#endif |
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|
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static int |
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s_signum (SV *sig) |
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{ |
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#ifndef SIG_SIZE |
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/* kudos to Slaven Rezic for the idea */ |
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static char sig_size [] = { SIG_NUM }; |
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# define SIG_SIZE (sizeof (sig_size) + 1) |
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#endif |
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dTHX; |
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int signum; |
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|
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SvGETMAGIC (sig); |
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|
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for (signum = 1; signum < SIG_SIZE; ++signum) |
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if (strEQ (SvPV_nolen (sig), PL_sig_name [signum])) |
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return signum; |
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|
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signum = SvIV (sig); |
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|
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if (signum > 0 && signum < SIG_SIZE) |
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return signum; |
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|
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return -1; |
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} |
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|
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static int |
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s_signum_croak (SV *sig) |
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{ |
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int signum = s_signum (sig); |
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|
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if (signum < 0) |
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{ |
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dTHX; |
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croak ("%s: invalid signal name or number", SvPV_nolen (sig)); |
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} |
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|
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return signum; |
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} |
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|
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static int |
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s_fileno (SV *fh, int wr) |
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{ |
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dTHX; |
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SvGETMAGIC (fh); |
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|
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if (SvROK (fh)) |
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{ |
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fh = SvRV (fh); |
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SvGETMAGIC (fh); |
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} |
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|
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if (SvTYPE (fh) == SVt_PVGV) |
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return PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh))); |
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|
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if (SvOK (fh) && (SvIV (fh) >= 0) && (SvIV (fh) < 0x7fffffffL)) |
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return SvIV (fh); |
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|
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return -1; |
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} |
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|
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static int |
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s_fileno_croak (SV *fh, int wr) |
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{ |
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int fd = s_fileno (fh, wr); |
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|
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if (fd < 0) |
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{ |
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dTHX; |
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croak ("%s: illegal fh argument, either not an OS file or read/write mode mismatch", SvPV_nolen (fh)); |
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} |
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|
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return fd; |
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} |
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|
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static SV * |
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s_get_cv (SV *cb_sv) |
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{ |
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dTHX; |
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HV *st; |
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GV *gvp; |
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|
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return (SV *)sv_2cv (cb_sv, &st, &gvp, 0); |
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} |
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|
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static SV * |
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s_get_cv_croak (SV *cb_sv) |
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{ |
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SV *cv = s_get_cv (cb_sv); |
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|
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if (!cv) |
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{ |
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dTHX; |
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croak ("%s: callback must be a CODE reference or another callable object", SvPV_nolen (cb_sv)); |
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} |
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|
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return cv; |
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} |
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|
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/*****************************************************************************/ |
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/* gensub: simple closure generation utility */ |
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|
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#define S_GENSUB_ARG CvXSUBANY (cv).any_ptr |
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|
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/* create a closure from XS, returns a code reference */ |
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/* the arg can be accessed via GENSUB_ARG from the callback */ |
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/* the callback must use dXSARGS/XSRETURN */ |
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static SV * |
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s_gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
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{ |
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CV *cv = (CV *)newSV (0); |
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|
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sv_upgrade ((SV *)cv, SVt_PVCV); |
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|
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CvANON_on (cv); |
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CvISXSUB_on (cv); |
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CvXSUB (cv) = xsub; |
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S_GENSUB_ARG = arg; |
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|
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return newRV_noinc ((SV *)cv); |
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} |
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|
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/** portable pipe/socketpair */ |
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|
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#ifdef USE_SOCKETS_AS_HANDLES |
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# define S_TO_SOCKET(x) (win32_get_osfhandle (x)) |
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#else |
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# define S_TO_SOCKET(x) (x) |
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#endif |
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|
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#ifdef _WIN32 |
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/* taken almost verbatim from libev's ev_win32.c */ |
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/* oh, the humanity! */ |
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static int |
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s_pipe (int filedes [2]) |
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{ |
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struct sockaddr_in addr = { 0 }; |
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int addr_size = sizeof (addr); |
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struct sockaddr_in adr2; |
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int adr2_size = sizeof (adr2); |
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SOCKET listener; |
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SOCKET sock [2] = { -1, -1 }; |
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|
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if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) |
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return -1; |
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|
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addr.sin_family = AF_INET; |
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addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
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addr.sin_port = 0; |
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|
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if (bind (listener, (struct sockaddr *)&addr, addr_size)) |
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goto fail; |
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|
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if (getsockname (listener, (struct sockaddr *)&addr, &addr_size)) |
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goto fail; |
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|
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if (listen (listener, 1)) |
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goto fail; |
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|
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if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) |
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goto fail; |
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|
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if (connect (sock [0], (struct sockaddr *)&addr, addr_size)) |
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goto fail; |
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|
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if ((sock [1] = accept (listener, 0, 0)) < 0) |
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goto fail; |
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|
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/* windows vista returns fantasy port numbers for getpeername. |
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* example for two interconnected tcp sockets: |
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* |
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* (Socket::unpack_sockaddr_in getsockname $sock0)[0] == 53364 |
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* (Socket::unpack_sockaddr_in getpeername $sock0)[0] == 53363 |
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* (Socket::unpack_sockaddr_in getsockname $sock1)[0] == 53363 |
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* (Socket::unpack_sockaddr_in getpeername $sock1)[0] == 53365 |
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* |
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* wow! tridirectional sockets! |
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* |
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* this way of checking ports seems to work: |
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*/ |
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if (getpeername (sock [0], (struct sockaddr *)&addr, &addr_size)) |
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goto fail; |
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|
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if (getsockname (sock [1], (struct sockaddr *)&adr2, &adr2_size)) |
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goto fail; |
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|
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errno = WSAEINVAL; |
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if (addr_size != adr2_size |
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|| addr.sin_addr.s_addr != adr2.sin_addr.s_addr /* just to be sure, I mean, it's windows */ |
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|| addr.sin_port != adr2.sin_port) |
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goto fail; |
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|
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closesocket (listener); |
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|
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#ifdef USE_SOCKETS_AS_HANDLES |
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/* when select isn't winsocket, we also expect socket, connect, accept etc. |
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* to work on fds */ |
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filedes [0] = sock [0]; |
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filedes [1] = sock [1]; |
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#else |
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filedes [0] = _open_osfhandle (sock [0], 0); |
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filedes [1] = _open_osfhandle (sock [1], 0); |
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#endif |
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|
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return 0; |
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|
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fail: |
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closesocket (listener); |
| 278 |
|
| 279 |
if (sock [0] != INVALID_SOCKET) closesocket (sock [0]); |
| 280 |
if (sock [1] != INVALID_SOCKET) closesocket (sock [1]); |
| 281 |
|
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return -1; |
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} |
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|
| 285 |
#define s_socketpair(domain,type,protocol,filedes) s_pipe (filedes) |
| 286 |
|
| 287 |
#else |
| 288 |
|
| 289 |
#define s_socketpair(domain,type,protocol,filedes) socketpair (domain, type, protocol, filedes) |
| 290 |
#define s_pipe(filedes) pipe (filedes) |
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|
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#endif |
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|
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#endif |
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|
