9674c91da6
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@477 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
146 lines
3.0 KiB
C
146 lines
3.0 KiB
C
|
|
#include "Yap.h"
|
|
#include "Yatom.h"
|
|
#include "Heap.h"
|
|
#include "yapio.h"
|
|
#include "Foreign.h"
|
|
|
|
#if LOAD_SHL
|
|
|
|
#include <dl.h>
|
|
#include <malloc.h>
|
|
#include <stdio.h>
|
|
|
|
/*
|
|
* YAPFindExecutable(argv[0]) should be called on yap initialization to
|
|
* locate the executable of Yap
|
|
*/
|
|
|
|
void YAPFindExecutable(char *name)
|
|
{
|
|
/* not really needed for shl version */
|
|
strcpy( YapExecutable, "yap" );
|
|
}
|
|
|
|
|
|
/*
|
|
* LoadForeign(ofiles,libs,proc_name,init_proc) dynamically loads foreign
|
|
* code files and libraries and locates an initialization routine
|
|
*/
|
|
|
|
Int LoadForeign( StringList ofiles, StringList libs,
|
|
char *proc_name, YapInitProc *init_proc )
|
|
{
|
|
|
|
/* *init_proc is initialised to NULL in load_foreign.c */
|
|
int init_missing = -1;
|
|
|
|
int n, i;
|
|
struct shl_symbol *p;
|
|
|
|
while( ofiles ) {
|
|
int valid_fname;
|
|
|
|
/* shl_load wants to follow the LD_CONFIG_PATH */
|
|
valid_fname = TrueFileName( ofiles->s, FileNameBuf, TRUE );
|
|
|
|
if( !valid_fname ) {
|
|
strcpy( LoadMsg, "[ Trying to open non-existing file in LoadForeign ]" );
|
|
return LOAD_FAILLED;
|
|
}
|
|
|
|
ofiles->handle = AllocCodeSpace( sizeof(shl_t) );
|
|
*(shl_t *)ofiles->handle = shl_load( FileNameBuf, BIND_DEFERRED, 0 );
|
|
if( *(shl_t *)ofiles->handle == NULL ) {
|
|
strerror_r( errno, LoadMsg, 512 );
|
|
return LOAD_FAILLED;
|
|
}
|
|
|
|
if( init_missing ) {
|
|
init_missing = shl_findsym( ofiles->handle, proc_name,
|
|
TYPE_PROCEDURE, init_proc );
|
|
}
|
|
|
|
ofiles = ofiles->next;
|
|
}
|
|
|
|
if( init_missing ) {
|
|
strcpy( LoadMsg, "Could not locate initialization routine" );
|
|
return LOAD_FAILLED;
|
|
}
|
|
|
|
while( libs ) {
|
|
|
|
if( libs->s[0] == '-' ) {
|
|
strcpy( FileNameBuf, "lib" );
|
|
strcat( FileNameBuf, libs->s+2 );
|
|
strcat( FileNameBuf, ".sl" );
|
|
}
|
|
else {
|
|
strcpy( FileNameBuf, libs->s );
|
|
}
|
|
|
|
*(shl_t *)libs->handle = shl_load( FileNameBuf, BIND_DEFERRED, 0 );
|
|
if( *(shl_t *)libs->handle == NULL ) {
|
|
strerror_r( errno, LoadMsg, 512 );
|
|
return LOAD_FAILLED;
|
|
}
|
|
|
|
libs = libs->next;
|
|
}
|
|
|
|
return LOAD_SUCCEEDED;
|
|
}
|
|
|
|
|
|
void ShutdownLoadForeign( void )
|
|
{
|
|
ForeignObj *f_code;
|
|
int err;
|
|
|
|
f_code = ForeignCodeLoaded;
|
|
while( f_code != NULL ) {
|
|
StringList objs, libs;
|
|
|
|
objs = f_code->objs;
|
|
while( objs ) {
|
|
err = shl_unload( *(shl_t *)objs->handle );
|
|
if( err ) {
|
|
/* dunno how to properly report an error here */
|
|
perror( NULL );
|
|
return;
|
|
}
|
|
FreeCodeSpace( objs->handle );
|
|
objs = objs->next;
|
|
}
|
|
|
|
libs = f_code->libs;
|
|
while( libs ) {
|
|
err = shl_unload( *(shl_t *)libs->handle );
|
|
if( err ) {
|
|
/* dunno how to properly report an error here */
|
|
perror( NULL );
|
|
return;
|
|
}
|
|
FreeCodeSpace( libs->handle );
|
|
libs = libs->next;
|
|
}
|
|
f_code = f_code->next;
|
|
}
|
|
}
|
|
|
|
Int ReLoadForeign(StringList ofiles, StringList libs,
|
|
char *proc_name, YapInitProc *init_proc)
|
|
{
|
|
ShutdownLoadForeign();
|
|
return( LoadForeign( ofiles, libs, proc_name, init_proc ) );
|
|
}
|
|
|
|
/*
|
|
dunno what this one is supposed to do, no load_* defines it
|
|
void STD_PROTO(ReOpenLoadForeign,(void));
|
|
*/
|
|
|
|
#endif
|
|
|