Commit | Line | Data |
---|---|---|
a0d0e21e LW |
1 | /* dlutils.c - handy functions and definitions for dl_*.xs files |
2 | * | |
3 | * Currently this file is simply #included into dl_*.xs/.c files. | |
4 | * It should really be split into a dlutils.h and dlutils.c | |
5 | * | |
abb9e9dc GS |
6 | * Modified: |
7 | * 29th Feburary 2000 - Alan Burlison: Added functionality to close dlopen'd | |
8 | * files when the interpreter exits | |
a0d0e21e LW |
9 | */ |
10 | ||
2e346879 | 11 | #define PERL_EUPXS_ALWAYS_EXPORT |
27da23d5 | 12 | #ifndef START_MY_CXT /* Some IDEs try compiling this standalone. */ |
73e43954 | 13 | # define PERL_EXT |
27da23d5 JH |
14 | # include "EXTERN.h" |
15 | # include "perl.h" | |
16 | # include "XSUB.h" | |
17 | #endif | |
18 | ||
89ca4ac7 JH |
19 | #ifndef XS_VERSION |
20 | # define XS_VERSION "0" | |
21 | #endif | |
39c19e8a | 22 | #define MY_CXT_KEY "DynaLoader::_guts" XS_VERSION |
a0d0e21e | 23 | |
db6e00bd DD |
24 | /* disable version checking since DynaLoader can't be DynaLoaded */ |
25 | #undef dXSBOOTARGSXSAPIVERCHK | |
9a189793 | 26 | #define dXSBOOTARGSXSAPIVERCHK dXSBOOTARGSNOVERCHK |
db6e00bd | 27 | |
cdc73a10 | 28 | typedef struct { |
591022fb | 29 | SV* x_dl_last_error; /* pointer to allocated memory for |
cdc73a10 | 30 | last error message */ |
11f610b5 | 31 | #if defined(PERL_IN_DL_HPUX_XS) || defined(PERL_IN_DL_DLOPEN_XS) |
cdc73a10 JH |
32 | int x_dl_nonlazy; /* flag for immediate rather than lazy |
33 | linking (spots unresolved symbol) */ | |
11f610b5 | 34 | #endif |
cdc73a10 JH |
35 | #ifdef DL_LOADONCEONLY |
36 | HV * x_dl_loaded_files; /* only needed on a few systems */ | |
37 | #endif | |
38 | #ifdef DL_CXT_EXTRA | |
39 | my_cxtx_t x_dl_cxtx; /* extra platform-specific data */ | |
40 | #endif | |
41 | #ifdef DEBUGGING | |
42 | int x_dl_debug; /* value copied from $DynaLoader::dl_debug */ | |
43 | #endif | |
44 | } my_cxt_t; | |
45 | ||
89ca4ac7 | 46 | START_MY_CXT |
cdc73a10 | 47 | |
591022fb | 48 | #define dl_last_error (SvPVX(MY_CXT.x_dl_last_error)) |
11f610b5 | 49 | #if defined(PERL_IN_DL_HPUX_XS) || defined(PERL_IN_DL_DLOPEN_XS) |
89ca4ac7 | 50 | #define dl_nonlazy (MY_CXT.x_dl_nonlazy) |
11f610b5 | 51 | #endif |
cdc73a10 | 52 | #ifdef DL_LOADONCEONLY |
89ca4ac7 | 53 | #define dl_loaded_files (MY_CXT.x_dl_loaded_files) |
cdc73a10 JH |
54 | #endif |
55 | #ifdef DL_CXT_EXTRA | |
89ca4ac7 | 56 | #define dl_cxtx (MY_CXT.x_dl_cxtx) |
cdc73a10 JH |
57 | #endif |
58 | #ifdef DEBUGGING | |
89ca4ac7 | 59 | #define dl_debug (MY_CXT.x_dl_debug) |
cdc73a10 JH |
60 | #endif |
61 | ||
a0d0e21e | 62 | #ifdef DEBUGGING |
cdc73a10 JH |
63 | #define DLDEBUG(level,code) \ |
64 | STMT_START { \ | |
65 | dMY_CXT; \ | |
66 | if (dl_debug>=level) { code; } \ | |
67 | } STMT_END | |
a0d0e21e | 68 | #else |
cdc73a10 | 69 | #define DLDEBUG(level,code) NOOP |
a0d0e21e LW |
70 | #endif |
71 | ||
c6c619a9 | 72 | #ifdef DL_UNLOAD_ALL_AT_EXIT |
abb9e9dc GS |
73 | /* Close all dlopen'd files */ |
74 | static void | |
acfe0abc | 75 | dl_unload_all_files(pTHX_ void *unused) |
abb9e9dc GS |
76 | { |
77 | CV *sub; | |
78 | AV *dl_librefs; | |
79 | SV *dl_libref; | |
80 | ||
b96d8cd9 | 81 | if ((sub = get_cvs("DynaLoader::dl_unload_file", 0)) != NULL) { |
cbfd0a87 | 82 | dl_librefs = get_av("DynaLoader::dl_librefs", 0); |
bb6a367a | 83 | EXTEND(SP,1); |
abb9e9dc GS |
84 | while ((dl_libref = av_pop(dl_librefs)) != &PL_sv_undef) { |
85 | dSP; | |
86 | ENTER; | |
87 | SAVETMPS; | |
88 | PUSHMARK(SP); | |
bb6a367a | 89 | PUSHs(sv_2mortal(dl_libref)); |
abb9e9dc | 90 | PUTBACK; |
22851543 | 91 | call_sv((SV*)sub, G_DISCARD | G_NODEBUG); |
abb9e9dc GS |
92 | FREETMPS; |
93 | LEAVE; | |
94 | } | |
95 | } | |
96 | } | |
c6c619a9 | 97 | #endif |
abb9e9dc | 98 | |
a0d0e21e | 99 | static void |
acfe0abc | 100 | dl_generic_private_init(pTHX) /* called by dl_*.xs dl_private_init() */ |
a0d0e21e | 101 | { |
11f610b5 | 102 | #if defined(PERL_IN_DL_HPUX_XS) || defined(PERL_IN_DL_DLOPEN_XS) |
8e07c86e | 103 | char *perl_dl_nonlazy; |
22ff3130 | 104 | UV uv; |
11f610b5 | 105 | #endif |
89ca4ac7 | 106 | MY_CXT_INIT; |
cdc73a10 | 107 | |
c2b90b61 | 108 | MY_CXT.x_dl_last_error = newSVpvs(""); |
cdc73a10 | 109 | #ifdef DL_LOADONCEONLY |
5c284bb0 | 110 | dl_loaded_files = NULL; |
cdc73a10 | 111 | #endif |
a0d0e21e | 112 | #ifdef DEBUGGING |
cdc73a10 JH |
113 | { |
114 | SV *sv = get_sv("DynaLoader::dl_debug", 0); | |
115 | dl_debug = sv ? SvIV(sv) : 0; | |
116 | } | |
8e07c86e | 117 | #endif |
11f610b5 DD |
118 | |
119 | #if defined(PERL_IN_DL_HPUX_XS) || defined(PERL_IN_DL_DLOPEN_XS) | |
22ff3130 HS |
120 | if ( (perl_dl_nonlazy = getenv("PERL_DL_NONLAZY")) != NULL |
121 | && grok_atoUV(perl_dl_nonlazy, &uv, NULL) | |
122 | && uv <= INT_MAX | |
123 | ) { | |
124 | dl_nonlazy = (int)uv; | |
125 | } else | |
11f610b5 | 126 | dl_nonlazy = 0; |
8e07c86e | 127 | if (dl_nonlazy) |
bf49b057 | 128 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "DynaLoader bind mode is 'non-lazy'\n")); |
11f610b5 | 129 | #endif |
8e07c86e AD |
130 | #ifdef DL_LOADONCEONLY |
131 | if (!dl_loaded_files) | |
132 | dl_loaded_files = newHV(); /* provide cache for dl_*.xs if needed */ | |
a0d0e21e | 133 | #endif |
23d2500b | 134 | #ifdef DL_UNLOAD_ALL_AT_EXIT |
abb9e9dc | 135 | call_atexit(&dl_unload_all_files, (void*)0); |
23d2500b | 136 | #endif |
a0d0e21e LW |
137 | } |
138 | ||
139 | ||
27da23d5 | 140 | #ifndef SYMBIAN |
cdc73a10 | 141 | /* SaveError() takes printf style args and saves the result in dl_last_error */ |
a0d0e21e | 142 | static void |
dd374669 | 143 | SaveError(pTHX_ const char* pat, ...) |
a0d0e21e LW |
144 | { |
145 | va_list args; | |
a6c40364 | 146 | SV *msv; |
dd374669 | 147 | const char *message; |
a6c40364 | 148 | STRLEN len; |
a0d0e21e | 149 | |
8e07c86e | 150 | /* This code is based on croak/warn, see mess() in util.c */ |
a0d0e21e | 151 | |
a0d0e21e | 152 | va_start(args, pat); |
5a844595 | 153 | msv = vmess(pat, &args); |
a0d0e21e LW |
154 | va_end(args); |
155 | ||
a6c40364 GS |
156 | message = SvPV(msv,len); |
157 | len++; /* include terminating null char */ | |
a0d0e21e | 158 | |
09b319af DD |
159 | { |
160 | dMY_CXT; | |
cdc73a10 | 161 | /* Copy message into dl_last_error (including terminating null char) */ |
09b319af DD |
162 | sv_setpvn(MY_CXT.x_dl_last_error, message, len) ; |
163 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, "DynaLoader: stored error msg '%s'\n",dl_last_error)); | |
164 | } | |
a0d0e21e | 165 | } |
27da23d5 | 166 | #endif |
a0d0e21e | 167 |