This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
document unimplemented status of forking pipe open() on windows
[perl5.git] / gv.h
CommitLineData
a0d0e21e 1/* gv.h
79072805 2 *
4eb8286e 3 * Copyright (c) 1991-1999, Larry Wall
79072805
LW
4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
79072805
LW
8 */
9
10struct gp {
11 SV * gp_sv; /* scalar value */
12 U32 gp_refcnt; /* how many globs point to this? */
13 struct io * gp_io; /* filehandle value */
14 CV * gp_form; /* format value */
15 AV * gp_av; /* array value */
aa689395 16 HV * gp_hv; /* hash value */
79072805
LW
17 GV * gp_egv; /* effective gv, if *glob */
18 CV * gp_cv; /* subroutine value */
463ee0b2 19 U32 gp_cvgen; /* generational validity of cached gv_cv */
f4c556ac 20 U32 gp_flags; /* XXX unused */
79072805 21 line_t gp_line; /* line first declared at (for -w) */
b195d487 22 char * gp_file; /* file first declared in (for -w) */
79072805
LW
23};
24
25#if defined(CRIPPLED_CC) && (defined(iAPX286) || defined(M_I286) || defined(I80286))
26#define MICROPORT
27#endif
28
29#define GvXPVGV(gv) ((XPVGV*)SvANY(gv))
30
a5f75d66
AD
31#define GvGP(gv) (GvXPVGV(gv)->xgv_gp)
32#define GvNAME(gv) (GvXPVGV(gv)->xgv_name)
33#define GvNAMELEN(gv) (GvXPVGV(gv)->xgv_namelen)
34#define GvSTASH(gv) (GvXPVGV(gv)->xgv_stash)
35#define GvFLAGS(gv) (GvXPVGV(gv)->xgv_flags)
36
79072805
LW
37#define GvSV(gv) (GvGP(gv)->gp_sv)
38#define GvREFCNT(gv) (GvGP(gv)->gp_refcnt)
a0d0e21e
LW
39#define GvIO(gv) ((gv) && SvTYPE((SV*)gv) == SVt_PVGV ? GvIOp(gv) : 0)
40#define GvIOp(gv) (GvGP(gv)->gp_io)
41#define GvIOn(gv) (GvIO(gv) ? GvIOp(gv) : GvIOp(gv_IOadd(gv)))
79072805
LW
42
43#define GvFORM(gv) (GvGP(gv)->gp_form)
44#define GvAV(gv) (GvGP(gv)->gp_av)
44a8e56a
PP
45
46/* This macro is deprecated. Do not use! */
47#define GvREFCNT_inc(gv) ((GV*)SvREFCNT_inc(gv)) /* DO NOT USE */
79072805
LW
48
49#ifdef MICROPORT /* Microport 2.4 hack */
50AV *GvAVn();
51#else
52#define GvAVn(gv) (GvGP(gv)->gp_av ? \
53 GvGP(gv)->gp_av : \
54 GvGP(gv_AVadd(gv))->gp_av)
55#endif
56#define GvHV(gv) ((GvGP(gv))->gp_hv)
57
58#ifdef MICROPORT /* Microport 2.4 hack */
59HV *GvHVn();
60#else
61#define GvHVn(gv) (GvGP(gv)->gp_hv ? \
62 GvGP(gv)->gp_hv : \
63 GvGP(gv_HVadd(gv))->gp_hv)
64#endif /* Microport 2.4 hack */
65
66#define GvCV(gv) (GvGP(gv)->gp_cv)
463ee0b2 67#define GvCVGEN(gv) (GvGP(gv)->gp_cvgen)
8ebc5c01 68#define GvCVu(gv) (GvGP(gv)->gp_cvgen ? Nullcv : GvGP(gv)->gp_cv)
79072805 69
f4c556ac 70#define GvGPFLAGS(gv) (GvGP(gv)->gp_flags)
79072805
LW
71
72#define GvLINE(gv) (GvGP(gv)->gp_line)
b195d487 73#define GvFILE(gv) (GvGP(gv)->gp_file)
57843af0 74#define GvFILEGV(gv) (gv_fetchfile(GvFILE(gv)))
79072805 75
79072805 76#define GvEGV(gv) (GvGP(gv)->gp_egv)
748a9306 77#define GvENAME(gv) GvNAME(GvEGV(gv) ? GvEGV(gv) : gv)
748a9306 78#define GvESTASH(gv) GvSTASH(GvEGV(gv) ? GvEGV(gv) : gv)
79072805 79
a5f75d66
AD
80#define GVf_INTRO 0x01
81#define GVf_MULTI 0x02
82#define GVf_ASSUMECV 0x04
743e66e6 83#define GVf_IN_PAD 0x08
a5f75d66
AD
84#define GVf_IMPORTED 0xF0
85#define GVf_IMPORTED_SV 0x10
86#define GVf_IMPORTED_AV 0x20
87#define GVf_IMPORTED_HV 0x40
88#define GVf_IMPORTED_CV 0x80
89
90#define GvINTRO(gv) (GvFLAGS(gv) & GVf_INTRO)
91#define GvINTRO_on(gv) (GvFLAGS(gv) |= GVf_INTRO)
92#define GvINTRO_off(gv) (GvFLAGS(gv) &= ~GVf_INTRO)
93
94#define GvMULTI(gv) (GvFLAGS(gv) & GVf_MULTI)
95#define GvMULTI_on(gv) (GvFLAGS(gv) |= GVf_MULTI)
96#define GvMULTI_off(gv) (GvFLAGS(gv) &= ~GVf_MULTI)
97
98#define GvASSUMECV(gv) (GvFLAGS(gv) & GVf_ASSUMECV)
99#define GvASSUMECV_on(gv) (GvFLAGS(gv) |= GVf_ASSUMECV)
100#define GvASSUMECV_off(gv) (GvFLAGS(gv) &= ~GVf_ASSUMECV)
101
102#define GvIMPORTED(gv) (GvFLAGS(gv) & GVf_IMPORTED)
103#define GvIMPORTED_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED)
104#define GvIMPORTED_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED)
105
106#define GvIMPORTED_SV(gv) (GvFLAGS(gv) & GVf_IMPORTED_SV)
107#define GvIMPORTED_SV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_SV)
108#define GvIMPORTED_SV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_SV)
109
110#define GvIMPORTED_AV(gv) (GvFLAGS(gv) & GVf_IMPORTED_AV)
111#define GvIMPORTED_AV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_AV)
112#define GvIMPORTED_AV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_AV)
113
114#define GvIMPORTED_HV(gv) (GvFLAGS(gv) & GVf_IMPORTED_HV)
115#define GvIMPORTED_HV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_HV)
116#define GvIMPORTED_HV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_HV)
117
118#define GvIMPORTED_CV(gv) (GvFLAGS(gv) & GVf_IMPORTED_CV)
119#define GvIMPORTED_CV_on(gv) (GvFLAGS(gv) |= GVf_IMPORTED_CV)
120#define GvIMPORTED_CV_off(gv) (GvFLAGS(gv) &= ~GVf_IMPORTED_CV)
121
743e66e6
GS
122#define GvIN_PAD(gv) (GvFLAGS(gv) & GVf_IN_PAD)
123#define GvIN_PAD_on(gv) (GvFLAGS(gv) |= GVf_IN_PAD)
124#define GvIN_PAD_off(gv) (GvFLAGS(gv) &= ~GVf_IN_PAD)
125
79072805
LW
126#define Nullgv Null(GV*)
127
128#define DM_UID 0x003
129#define DM_RUID 0x001
130#define DM_EUID 0x002
131#define DM_GID 0x030
132#define DM_RGID 0x010
133#define DM_EGID 0x020
134#define DM_DELAY 0x100
135
0f303493 136/*
864dbfa3 137 * symbol creation flags, for use in gv_fetchpv() and get_*v()
0f303493
GS
138 */
139#define GV_ADD 0x01 /* add, if symbol not already there */
140#define GV_ADDMULTI 0x02 /* add, pretending it has been added already */
141#define GV_ADDWARN 0x04 /* add, but warn if symbol wasn't already there */
142#define GV_ADDINEVAL 0x08 /* add, as though we're doing so within an eval */
143#define GV_NOINIT 0x10 /* add, but don't init symbol, if type != PVGV */