1 |
root |
1.1 |
#ifndef SCHMORP_PERL_H_ |
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#define SCHMORP_PERL_H_ |
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4 |
root |
1.2 |
/* WARNING |
5 |
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* This header file is a shared resource between many modules. |
6 |
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*/ |
7 |
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8 |
root |
1.5 |
#include <signal.h> |
9 |
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10 |
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#ifndef _WIN32 |
11 |
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# include <poll.h> |
12 |
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#endif |
13 |
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14 |
root |
1.1 |
/* useful stuff, used by schmorp mostly */ |
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16 |
root |
1.4 |
#include "patchlevel.h" |
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18 |
root |
1.1 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
19 |
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(PERL_REVISION > (a) \ |
20 |
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|| (PERL_REVISION == (a) \ |
21 |
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&& (PERL_VERSION > (b) \ |
22 |
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|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
23 |
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24 |
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#if !PERL_VERSION_ATLEAST (5,6,0) |
25 |
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# ifndef PL_ppaddr |
26 |
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# define PL_ppaddr ppaddr |
27 |
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# endif |
28 |
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# ifndef call_sv |
29 |
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# define call_sv perl_call_sv |
30 |
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# endif |
31 |
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# ifndef get_sv |
32 |
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# define get_sv perl_get_sv |
33 |
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# endif |
34 |
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# ifndef get_cv |
35 |
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# define get_cv perl_get_cv |
36 |
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# endif |
37 |
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# ifndef IS_PADGV |
38 |
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# define IS_PADGV(v) 0 |
39 |
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# endif |
40 |
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# ifndef IS_PADCONST |
41 |
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# define IS_PADCONST(v) 0 |
42 |
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# endif |
43 |
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#endif |
44 |
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45 |
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/* 5.11 */ |
46 |
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#ifndef CxHASARGS |
47 |
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# define CxHASARGS(cx) (cx)->blk_sub.hasargs |
48 |
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#endif |
49 |
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50 |
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/* 5.10.0 */ |
51 |
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#ifndef SvREFCNT_inc_NN |
52 |
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# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
53 |
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#endif |
54 |
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55 |
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/* 5.8.8 */ |
56 |
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#ifndef GV_NOTQUAL |
57 |
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# define GV_NOTQUAL 0 |
58 |
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#endif |
59 |
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#ifndef newSV |
60 |
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# define newSV(l) NEWSV(0,l) |
61 |
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#endif |
62 |
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#ifndef CvISXSUB_on |
63 |
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# define CvISXSUB_on(cv) (void)cv |
64 |
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#endif |
65 |
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#ifndef CvISXSUB |
66 |
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# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE) |
67 |
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#endif |
68 |
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#ifndef Newx |
69 |
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# define Newx(ptr,nitems,type) New (0,ptr,nitems,type) |
70 |
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#endif |
71 |
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72 |
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/* 5.8.7 */ |
73 |
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#ifndef SvRV_set |
74 |
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# define SvRV_set(s,v) SvRV(s) = (v) |
75 |
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#endif |
76 |
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77 |
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static int |
78 |
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s_signum (SV *sig) |
79 |
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{ |
80 |
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#ifndef SIG_SIZE |
81 |
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/* kudos to Slaven Rezic for the idea */ |
82 |
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static char sig_size [] = { SIG_NUM }; |
83 |
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# define SIG_SIZE (sizeof (sig_size) + 1) |
84 |
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#endif |
85 |
root |
1.5 |
dTHX; |
86 |
root |
1.1 |
int signum; |
87 |
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88 |
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SvGETMAGIC (sig); |
89 |
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90 |
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for (signum = 1; signum < SIG_SIZE; ++signum) |
91 |
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if (strEQ (SvPV_nolen (sig), PL_sig_name [signum])) |
92 |
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return signum; |
93 |
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94 |
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signum = SvIV (sig); |
95 |
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96 |
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if (signum > 0 && signum < SIG_SIZE) |
97 |
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return signum; |
98 |
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99 |
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return -1; |
100 |
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} |
101 |
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102 |
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static int |
103 |
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s_signum_croak (SV *sig) |
104 |
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{ |
105 |
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int signum = s_signum (sig); |
106 |
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107 |
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if (signum < 0) |
108 |
root |
1.5 |
{ |
109 |
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dTHX; |
110 |
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croak ("%s: invalid signal name or number", SvPV_nolen (sig)); |
111 |
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} |
112 |
root |
1.1 |
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113 |
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return signum; |
114 |
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} |
115 |
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116 |
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static int |
117 |
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s_fileno (SV *fh, int wr) |
118 |
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{ |
119 |
root |
1.5 |
dTHX; |
120 |
root |
1.1 |
SvGETMAGIC (fh); |
121 |
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122 |
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if (SvROK (fh)) |
123 |
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{ |
124 |
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fh = SvRV (fh); |
125 |
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SvGETMAGIC (fh); |
126 |
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} |
127 |
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128 |
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if (SvTYPE (fh) == SVt_PVGV) |
129 |
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return PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh))); |
130 |
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131 |
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if (SvOK (fh) && (SvIV (fh) >= 0) && (SvIV (fh) < 0x7fffffffL)) |
132 |
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return SvIV (fh); |
133 |
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134 |
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return -1; |
135 |
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} |
136 |
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137 |
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static int |
138 |
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s_fileno_croak (SV *fh, int wr) |
139 |
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{ |
140 |
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int fd = s_fileno (fh, wr); |
141 |
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142 |
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if (fd < 0) |
143 |
root |
1.5 |
{ |
144 |
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dTHX; |
145 |
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croak ("%s: illegal fh argument, either not an OS file or read/write mode mismatch", SvPV_nolen (fh)); |
146 |
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} |
147 |
root |
1.1 |
|
148 |
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return fd; |
149 |
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} |
150 |
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151 |
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static SV * |
152 |
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s_get_cv (SV *cb_sv) |
153 |
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{ |
154 |
root |
1.5 |
dTHX; |
155 |
root |
1.1 |
HV *st; |
156 |
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GV *gvp; |
157 |
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158 |
root |
1.4 |
return (SV *)sv_2cv (cb_sv, &st, &gvp, 0); |
159 |
root |
1.1 |
} |
160 |
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161 |
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static SV * |
162 |
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s_get_cv_croak (SV *cb_sv) |
163 |
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{ |
164 |
root |
1.3 |
SV *cv = s_get_cv (cb_sv); |
165 |
root |
1.1 |
|
166 |
root |
1.3 |
if (!cv) |
167 |
root |
1.5 |
{ |
168 |
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dTHX; |
169 |
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croak ("%s: callback must be a CODE reference or another callable object", SvPV_nolen (cb_sv)); |
170 |
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} |
171 |
root |
1.1 |
|
172 |
root |
1.3 |
return cv; |
173 |
root |
1.1 |
} |
174 |
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175 |
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/*****************************************************************************/ |
176 |
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/* gensub: simple closure generation utility */ |
177 |
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178 |
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#define S_GENSUB_ARG CvXSUBANY (cv).any_ptr |
179 |
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180 |
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/* create a closure from XS, returns a code reference */ |
181 |
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/* the arg can be accessed via GENSUB_ARG from the callback */ |
182 |
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/* the callback must use dXSARGS/XSRETURN */ |
183 |
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static SV * |
184 |
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s_gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
185 |
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{ |
186 |
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CV *cv = (CV *)newSV (0); |
187 |
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188 |
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sv_upgrade ((SV *)cv, SVt_PVCV); |
189 |
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190 |
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CvANON_on (cv); |
191 |
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CvISXSUB_on (cv); |
192 |
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CvXSUB (cv) = xsub; |
193 |
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S_GENSUB_ARG = arg; |
194 |
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195 |
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return newRV_noinc ((SV *)cv); |
196 |
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} |
197 |
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198 |
root |
1.5 |
/** portable pipe/socketpair */ |
199 |
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200 |
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#ifdef USE_SOCKETS_AS_HANDLES |
201 |
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# define S_TO_SOCKET(x) (win32_get_osfhandle (x)) |
202 |
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#else |
203 |
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# define S_TO_SOCKET(x) (x) |
204 |
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#endif |
205 |
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206 |
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#ifdef _WIN32 |
207 |
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/* taken almost verbatim from libev's ev_win32.c */ |
208 |
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/* oh, the humanity! */ |
209 |
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static int |
210 |
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s_pipe (int filedes [2]) |
211 |
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{ |
212 |
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struct sockaddr_in addr = { 0 }; |
213 |
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int addr_size = sizeof (addr); |
214 |
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struct sockaddr_in adr2; |
215 |
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int adr2_size = sizeof (adr2); |
216 |
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SOCKET listener; |
217 |
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SOCKET sock [2] = { -1, -1 }; |
218 |
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219 |
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if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) |
220 |
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return -1; |
221 |
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222 |
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addr.sin_family = AF_INET; |
223 |
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addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
224 |
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addr.sin_port = 0; |
225 |
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226 |
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if (bind (listener, (struct sockaddr *)&addr, addr_size)) |
227 |
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goto fail; |
228 |
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229 |
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if (getsockname (listener, (struct sockaddr *)&addr, &addr_size)) |
230 |
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goto fail; |
231 |
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232 |
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if (listen (listener, 1)) |
233 |
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goto fail; |
234 |
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235 |
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if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) |
236 |
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goto fail; |
237 |
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238 |
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if (connect (sock [0], (struct sockaddr *)&addr, addr_size)) |
239 |
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goto fail; |
240 |
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241 |
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if ((sock [1] = accept (listener, 0, 0)) < 0) |
242 |
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goto fail; |
243 |
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244 |
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/* windows vista returns fantasy port numbers for getpeername. |
245 |
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* example for two interconnected tcp sockets: |
246 |
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* |
247 |
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* (Socket::unpack_sockaddr_in getsockname $sock0)[0] == 53364 |
248 |
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* (Socket::unpack_sockaddr_in getpeername $sock0)[0] == 53363 |
249 |
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* (Socket::unpack_sockaddr_in getsockname $sock1)[0] == 53363 |
250 |
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* (Socket::unpack_sockaddr_in getpeername $sock1)[0] == 53365 |
251 |
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* |
252 |
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* wow! tridirectional sockets! |
253 |
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* |
254 |
|
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* this way of checking ports seems to work: |
255 |
|
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*/ |
256 |
|
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if (getpeername (sock [0], (struct sockaddr *)&addr, &addr_size)) |
257 |
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goto fail; |
258 |
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259 |
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if (getsockname (sock [1], (struct sockaddr *)&adr2, &adr2_size)) |
260 |
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goto fail; |
261 |
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262 |
|
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errno = WSAEINVAL; |
263 |
|
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if (addr_size != adr2_size |
264 |
|
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|| addr.sin_addr.s_addr != adr2.sin_addr.s_addr /* just to be sure, I mean, it's windows */ |
265 |
|
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|| addr.sin_port != adr2.sin_port) |
266 |
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goto fail; |
267 |
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268 |
|
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closesocket (listener); |
269 |
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|
270 |
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#ifdef USE_SOCKETS_AS_HANDLES |
271 |
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/* when select isn't winsocket, we also expect socket, connect, accept etc. |
272 |
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* to work on fds */ |
273 |
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filedes [0] = sock [0]; |
274 |
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filedes [1] = sock [1]; |
275 |
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#else |
276 |
|
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filedes [0] = _open_osfhandle (sock [0], 0); |
277 |
|
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filedes [1] = _open_osfhandle (sock [1], 0); |
278 |
|
|
#endif |
279 |
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|
280 |
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return 0; |
281 |
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282 |
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fail: |
283 |
|
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closesocket (listener); |
284 |
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|
285 |
|
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if (sock [0] != INVALID_SOCKET) closesocket (sock [0]); |
286 |
|
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if (sock [1] != INVALID_SOCKET) closesocket (sock [1]); |
287 |
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|
288 |
|
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return -1; |
289 |
|
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} |
290 |
|
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|
291 |
|
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#define s_socketpair(domain,type,protocol,filedes) s_pipe (filedes) |
292 |
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|
293 |
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static int |
294 |
|
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s_fd_blocking (int fd, int blocking) |
295 |
|
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{ |
296 |
|
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blocking = !blocking; |
297 |
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|
298 |
|
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return ioctlsocket (S_TO_SOCKET (fd), FIONBIO, &blocking); |
299 |
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} |
300 |
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301 |
|
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#define s_fd_prepare(fd) s_fd_blocking (fd, 0) |
302 |
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303 |
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#else |
304 |
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305 |
|
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#define s_socketpair(domain,type,protocol,filedes) socketpair (domain, type, protocol, filedes) |
306 |
|
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#define s_pipe(filedes) pipe (filedes) |
307 |
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|
308 |
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static int |
309 |
|
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s_fd_blocking (int fd, int blocking) |
310 |
|
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{ |
311 |
|
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return fcntl (fd, F_SETFL, blocking ? 0 : O_NONBLOCK); |
312 |
|
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} |
313 |
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|
314 |
|
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static int |
315 |
|
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s_fd_prepare (int fd) |
316 |
|
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{ |
317 |
|
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return s_fd_blocking (fd, 0) |
318 |
|
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|| fcntl (fd, F_SETFD, FD_CLOEXEC); |
319 |
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} |
320 |
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321 |
|
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#endif |
322 |
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323 |
|
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#if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
324 |
|
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/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
325 |
|
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# include <stdint.h> |
326 |
|
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# ifdef __cplusplus |
327 |
|
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extern "C" { |
328 |
|
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# endif |
329 |
|
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int eventfd (unsigned int initval, int flags); |
330 |
|
|
# ifdef __cplusplus |
331 |
|
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} |
332 |
|
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# endif |
333 |
|
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#else |
334 |
|
|
# define eventfd(initval,flags) -1 |
335 |
|
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#endif |
336 |
|
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|
337 |
|
|
typedef struct { |
338 |
|
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int fd[2]; /* read, write fd, might be equal */ |
339 |
|
|
int len; /* write length (1 pipe/socket, 8 eventfd) */ |
340 |
|
|
volatile sig_atomic_t sent; |
341 |
|
|
} s_epipe; |
342 |
|
|
|
343 |
|
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static int |
344 |
|
|
s_epipe_new (s_epipe *epp) |
345 |
|
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{ |
346 |
|
|
s_epipe ep; |
347 |
|
|
|
348 |
|
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ep.fd [0] = ep.fd [1] = eventfd (0, 0); |
349 |
|
|
|
350 |
|
|
if (ep.fd [0] >= 0) |
351 |
|
|
{ |
352 |
|
|
s_fd_prepare (ep.fd [0]); |
353 |
|
|
ep.len = 8; |
354 |
|
|
} |
355 |
|
|
else |
356 |
|
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{ |
357 |
|
|
if (s_pipe (ep.fd)) |
358 |
|
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return -1; |
359 |
|
|
|
360 |
|
|
if (s_fd_prepare (ep.fd [0]) |
361 |
|
|
|| s_fd_prepare (ep.fd [1])) |
362 |
|
|
{ |
363 |
|
|
close (ep.fd [0]); |
364 |
|
|
close (ep.fd [1]); |
365 |
|
|
return -1; |
366 |
|
|
} |
367 |
|
|
|
368 |
|
|
ep.len = 1; |
369 |
|
|
} |
370 |
|
|
|
371 |
|
|
ep.sent = 0; |
372 |
|
|
*epp = ep; |
373 |
|
|
return 0; |
374 |
|
|
} |
375 |
|
|
|
376 |
|
|
static void |
377 |
|
|
s_epipe_destroy (s_epipe *epp) |
378 |
|
|
{ |
379 |
|
|
close (epp->fd [0]); |
380 |
|
|
|
381 |
|
|
if (epp->fd [1] != epp->fd [0]) |
382 |
|
|
close (epp->fd [1]); |
383 |
|
|
|
384 |
|
|
epp->len = 0; |
385 |
|
|
} |
386 |
|
|
|
387 |
|
|
static void |
388 |
|
|
s_epipe_signal (s_epipe *epp) |
389 |
|
|
{ |
390 |
|
|
if (epp->sent) |
391 |
|
|
return; |
392 |
|
|
|
393 |
|
|
epp->sent = 1; |
394 |
|
|
#ifdef _WIN32 |
395 |
|
|
send (epp->fd [1], epp, 1); |
396 |
|
|
#else |
397 |
|
|
static uint64_t counter = 1; |
398 |
|
|
write (epp->fd [1], &counter, epp->len); |
399 |
|
|
#endif |
400 |
|
|
} |
401 |
|
|
|
402 |
|
|
static void |
403 |
|
|
s_epipe_drain (s_epipe *epp) |
404 |
|
|
{ |
405 |
|
|
char buf [9]; |
406 |
|
|
|
407 |
|
|
#ifdef _WIN32 |
408 |
|
|
PerlSock_recv (epp->fd [0], buf, sizeof (buf), 0); |
409 |
|
|
#else |
410 |
|
|
read (epp->fd [0], buf, sizeof (buf)); |
411 |
|
|
#endif |
412 |
|
|
|
413 |
|
|
epp->sent = 0; |
414 |
|
|
} |
415 |
|
|
|
416 |
|
|
/* like new, but dups over old */ |
417 |
|
|
static int |
418 |
|
|
s_epipe_renew (s_epipe *epp) |
419 |
|
|
{ |
420 |
|
|
s_epipe epn; |
421 |
|
|
|
422 |
|
|
if (epp->fd [1] != epp->fd [0]) |
423 |
|
|
close (epp->fd [1]); |
424 |
|
|
|
425 |
|
|
if (s_epipe_new (&epn)) |
426 |
|
|
return -1; |
427 |
|
|
|
428 |
|
|
if (epp->len) |
429 |
|
|
{ |
430 |
|
|
if (dup2 (S_TO_SOCKET (epn.fd [0]), S_TO_SOCKET (epp->fd [0])) < 0) |
431 |
|
|
croak ("unable to dup over old event pipe"); /* should not croak */ |
432 |
|
|
|
433 |
|
|
if (epp->fd [1] != epp->fd [0]) |
434 |
|
|
close (epn.fd [0]); |
435 |
|
|
|
436 |
|
|
epn.fd [0] = epp->fd [0]; |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
*epp = epn; |
440 |
|
|
|
441 |
|
|
return 0; |
442 |
|
|
} |
443 |
|
|
|
444 |
|
|
#define s_epipe_fd(epp) ((epp)->fd [0]) |
445 |
|
|
|
446 |
|
|
static int |
447 |
|
|
s_epipe_wait (s_epipe *epp) |
448 |
|
|
{ |
449 |
|
|
#ifdef _WIN32 |
450 |
|
|
fd_set rfd; |
451 |
|
|
|
452 |
|
|
FD_ZERO (&rfd); |
453 |
|
|
FD_SET (s_epipe_fd (epp), &rfd); |
454 |
|
|
|
455 |
|
|
return PerlSock_select (s_epipe_fd (epp) + 1, &rfd, 0, 0, 0); |
456 |
|
|
#else |
457 |
|
|
/* poll is preferable on posix systems */ |
458 |
|
|
struct pollfd pfd; |
459 |
|
|
|
460 |
|
|
pfd.fd = s_epipe_fd (epp); |
461 |
|
|
pfd.events = POLLIN; |
462 |
|
|
|
463 |
|
|
return poll (&pfd, 1, 0); |
464 |
|
|
#endif |
465 |
|
|
} |
466 |
|
|
|
467 |
root |
1.1 |
#endif |
468 |
|
|
|