Commit | Line | Data |
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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 | ||
27da23d5 JH |
11 | #ifndef START_MY_CXT /* Some IDEs try compiling this standalone. */ |
12 | # include "EXTERN.h" | |
13 | # include "perl.h" | |
14 | # include "XSUB.h" | |
15 | #endif | |
16 | ||
89ca4ac7 JH |
17 | #ifndef XS_VERSION |
18 | # define XS_VERSION "0" | |
19 | #endif | |
39c19e8a | 20 | #define MY_CXT_KEY "DynaLoader::_guts" XS_VERSION |
a0d0e21e | 21 | |
cdc73a10 | 22 | typedef struct { |
591022fb | 23 | SV* x_dl_last_error; /* pointer to allocated memory for |
cdc73a10 JH |
24 | last error message */ |
25 | int x_dl_nonlazy; /* flag for immediate rather than lazy | |
26 | linking (spots unresolved symbol) */ | |
27 | #ifdef DL_LOADONCEONLY | |
28 | HV * x_dl_loaded_files; /* only needed on a few systems */ | |
29 | #endif | |
30 | #ifdef DL_CXT_EXTRA | |
31 | my_cxtx_t x_dl_cxtx; /* extra platform-specific data */ | |
32 | #endif | |
33 | #ifdef DEBUGGING | |
34 | int x_dl_debug; /* value copied from $DynaLoader::dl_debug */ | |
35 | #endif | |
36 | } my_cxt_t; | |
37 | ||
89ca4ac7 | 38 | START_MY_CXT |
cdc73a10 | 39 | |
591022fb | 40 | #define dl_last_error (SvPVX(MY_CXT.x_dl_last_error)) |
89ca4ac7 | 41 | #define dl_nonlazy (MY_CXT.x_dl_nonlazy) |
cdc73a10 | 42 | #ifdef DL_LOADONCEONLY |
89ca4ac7 | 43 | #define dl_loaded_files (MY_CXT.x_dl_loaded_files) |
cdc73a10 JH |
44 | #endif |
45 | #ifdef DL_CXT_EXTRA | |
89ca4ac7 | 46 | #define dl_cxtx (MY_CXT.x_dl_cxtx) |
cdc73a10 JH |
47 | #endif |
48 | #ifdef DEBUGGING | |
89ca4ac7 | 49 | #define dl_debug (MY_CXT.x_dl_debug) |
cdc73a10 JH |
50 | #endif |
51 | ||
a0d0e21e | 52 | #ifdef DEBUGGING |
cdc73a10 JH |
53 | #define DLDEBUG(level,code) \ |
54 | STMT_START { \ | |
55 | dMY_CXT; \ | |
56 | if (dl_debug>=level) { code; } \ | |
57 | } STMT_END | |
a0d0e21e | 58 | #else |
cdc73a10 | 59 | #define DLDEBUG(level,code) NOOP |
a0d0e21e LW |
60 | #endif |
61 | ||
c6c619a9 | 62 | #ifdef DL_UNLOAD_ALL_AT_EXIT |
abb9e9dc GS |
63 | /* Close all dlopen'd files */ |
64 | static void | |
acfe0abc | 65 | dl_unload_all_files(pTHX_ void *unused) |
abb9e9dc GS |
66 | { |
67 | CV *sub; | |
68 | AV *dl_librefs; | |
69 | SV *dl_libref; | |
70 | ||
71 | if ((sub = get_cv("DynaLoader::dl_unload_file", FALSE)) != NULL) { | |
72 | dl_librefs = get_av("DynaLoader::dl_librefs", FALSE); | |
73 | while ((dl_libref = av_pop(dl_librefs)) != &PL_sv_undef) { | |
74 | dSP; | |
75 | ENTER; | |
76 | SAVETMPS; | |
77 | PUSHMARK(SP); | |
78 | XPUSHs(sv_2mortal(dl_libref)); | |
79 | PUTBACK; | |
22851543 | 80 | call_sv((SV*)sub, G_DISCARD | G_NODEBUG); |
abb9e9dc GS |
81 | FREETMPS; |
82 | LEAVE; | |
83 | } | |
84 | } | |
85 | } | |
c6c619a9 | 86 | #endif |
abb9e9dc | 87 | |
a0d0e21e | 88 | static void |
acfe0abc | 89 | dl_generic_private_init(pTHX) /* called by dl_*.xs dl_private_init() */ |
a0d0e21e | 90 | { |
8e07c86e | 91 | char *perl_dl_nonlazy; |
89ca4ac7 | 92 | MY_CXT_INIT; |
cdc73a10 | 93 | |
591022fb | 94 | MY_CXT.x_dl_last_error = newSVpvn("", 0); |
cdc73a10 JH |
95 | dl_nonlazy = 0; |
96 | #ifdef DL_LOADONCEONLY | |
5c284bb0 | 97 | dl_loaded_files = NULL; |
cdc73a10 | 98 | #endif |
a0d0e21e | 99 | #ifdef DEBUGGING |
cdc73a10 JH |
100 | { |
101 | SV *sv = get_sv("DynaLoader::dl_debug", 0); | |
102 | dl_debug = sv ? SvIV(sv) : 0; | |
103 | } | |
8e07c86e AD |
104 | #endif |
105 | if ( (perl_dl_nonlazy = getenv("PERL_DL_NONLAZY")) != NULL ) | |
106 | dl_nonlazy = atoi(perl_dl_nonlazy); | |
107 | if (dl_nonlazy) | |
bf49b057 | 108 | DLDEBUG(1,PerlIO_printf(Perl_debug_log, "DynaLoader bind mode is 'non-lazy'\n")); |
8e07c86e AD |
109 | #ifdef DL_LOADONCEONLY |
110 | if (!dl_loaded_files) | |
111 | dl_loaded_files = newHV(); /* provide cache for dl_*.xs if needed */ | |
a0d0e21e | 112 | #endif |
23d2500b | 113 | #ifdef DL_UNLOAD_ALL_AT_EXIT |
abb9e9dc | 114 | call_atexit(&dl_unload_all_files, (void*)0); |
23d2500b | 115 | #endif |
a0d0e21e LW |
116 | } |
117 | ||
118 | ||
27da23d5 | 119 | #ifndef SYMBIAN |
cdc73a10 | 120 | /* SaveError() takes printf style args and saves the result in dl_last_error */ |
a0d0e21e | 121 | static void |
dd374669 | 122 | SaveError(pTHX_ const char* pat, ...) |
a0d0e21e | 123 | { |
cdc73a10 | 124 | dMY_CXT; |
a0d0e21e | 125 | va_list args; |
a6c40364 | 126 | SV *msv; |
dd374669 | 127 | const char *message; |
a6c40364 | 128 | STRLEN len; |
a0d0e21e | 129 | |
8e07c86e | 130 | /* This code is based on croak/warn, see mess() in util.c */ |
a0d0e21e | 131 | |
a0d0e21e | 132 | va_start(args, pat); |
5a844595 | 133 | msv = vmess(pat, &args); |
a0d0e21e LW |
134 | va_end(args); |
135 | ||
a6c40364 GS |
136 | message = SvPV(msv,len); |
137 | len++; /* include terminating null char */ | |
a0d0e21e | 138 | |
cdc73a10 | 139 | /* Copy message into dl_last_error (including terminating null char) */ |
591022fb | 140 | sv_setpvn(MY_CXT.x_dl_last_error, message, len) ; |
cdc73a10 | 141 | DLDEBUG(2,PerlIO_printf(Perl_debug_log, "DynaLoader: stored error msg '%s'\n",dl_last_error)); |
a0d0e21e | 142 | } |
27da23d5 | 143 | #endif |
a0d0e21e | 144 |