73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
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/* dlutils.c - handy functions and definitions for dl_*.xs files
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*
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* Currently this file is simply #included into dl_*.xs/.c files.
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* It should really be split into a dlutils.h and dlutils.c
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*
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*/
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/* pointer to allocated memory for last error message */
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static char *LastError = (char*)NULL;
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/* flag for immediate rather than lazy linking (spots unresolved symbol) */
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static int dl_nonlazy = 0;
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#ifdef DL_LOADONCEONLY
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static HV *dl_loaded_files = Nullhv; /* only needed on a few systems */
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#endif
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#ifdef DEBUGGING
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static int dl_debug = 0; /* value copied from $DynaLoader::dl_error */
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#define DLDEBUG(level,code) if (dl_debug>=level) { code; }
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#else
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#define DLDEBUG(level,code)
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#endif
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static void
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dl_generic_private_init(CPERLarg) /* called by dl_*.xs dl_private_init() */
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{
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char *perl_dl_nonlazy;
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#ifdef DEBUGGING
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dl_debug = SvIV( perl_get_sv("DynaLoader::dl_debug", 0x04) );
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#endif
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if ( (perl_dl_nonlazy = getenv("PERL_DL_NONLAZY")) != NULL )
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dl_nonlazy = atoi(perl_dl_nonlazy);
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if (dl_nonlazy)
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DLDEBUG(1,PerlIO_printf(PerlIO_stderr(), "DynaLoader bind mode is 'non-lazy'\n"));
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#ifdef DL_LOADONCEONLY
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if (!dl_loaded_files)
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dl_loaded_files = newHV(); /* provide cache for dl_*.xs if needed */
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#endif
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}
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/* SaveError() takes printf style args and saves the result in LastError */
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static void
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SaveError(CPERLarg_ char* pat, ...)
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{
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va_list args;
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char *message;
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int len;
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/* This code is based on croak/warn, see mess() in util.c */
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va_start(args, pat);
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message = mess(pat, &args);
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va_end(args);
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len = strlen(message) + 1 ; /* include terminating null char */
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/* Allocate some memory for the error message */
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if (LastError)
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LastError = (char*)saferealloc(LastError, len) ;
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else
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LastError = (char *) safemalloc(len) ;
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/* Copy message into LastError (including terminating null char) */
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strncpy(LastError, message, len) ;
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DLDEBUG(2,PerlIO_printf(PerlIO_stderr(), "DynaLoader: stored error msg '%s'\n",LastError));
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}
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