105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
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/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: load_dl.c *
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* comments: dl based dynamic loader of external routines *
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* tested on i486-linuxelf *
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*************************************************************************/
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#include "Yap.h"
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#include "Yatom.h"
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#include "Heap.h"
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#include "yapio.h"
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#include "Foreign.h"
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#if LOAD_DLL
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#include <windows.h>
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/*
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* YAPFindExecutable(argv[0]) should be called on yap initialization to
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* locate the executable of Yap
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*/
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void
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YAPFindExecutable(char *name)
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{
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/* not really needed for dl version */
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strcpy(YapExecutable,"yap");
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}
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/*
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* LoadForeign(ofiles,libs,proc_name,init_proc) dynamically loads foreign
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* code files and libraries and locates an initialization routine
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*/
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Int
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LoadForeign(StringList ofiles, StringList libs,
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char *proc_name, YapInitProc *init_proc)
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{
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while (ofiles) {
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HINSTANCE handle;
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if (TrueFileName(ofiles->s, FileNameBuf, TRUE) &&
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(handle=LoadLibrary(FileNameBuf)) != 0)
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{
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if (*init_proc == NULL)
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*init_proc = (YapInitProc)GetProcAddress((HMODULE)handle, proc_name);
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}
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ofiles = ofiles->next;
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}
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/* load libraries first so that their symbols are available to
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other routines */
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while (libs) {
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HINSTANCE handle;
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if (libs->s[0] == '-') {
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strcat(FileNameBuf,libs->s+2);
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strcat(FileNameBuf,".dll");
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} else {
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strcpy(FileNameBuf,libs->s);
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}
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if((handle=LoadLibrary(FileNameBuf)) == 0)
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{
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/* strcpy(LoadMsg,dlerror());*/
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return LOAD_FAILLED;
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}
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if (*init_proc == NULL)
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*init_proc = (YapInitProc)GetProcAddress((HMODULE)handle, proc_name);
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libs = libs->next;
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}
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if(*init_proc == NULL) {
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strcpy(LoadMsg,"Could not locate initialization routine");
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return LOAD_FAILLED;
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}
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return LOAD_SUCCEEDED;
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}
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void
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ShutdownLoadForeign(void)
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{
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}
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Int
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ReLoadForeign(StringList ofiles, StringList libs,
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char *proc_name, YapInitProc *init_proc)
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{
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return(LoadForeign(ofiles,libs, proc_name, init_proc));
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}
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#endif
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