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/*
* pvm_interface.c
*
* Copyright (C) Marzio Malanchini - July 2003
*
* This file is part of transcode, a video stream processing tool
*
* transcode is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* transcode is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#else
# ifdef OS_DARWIN
# include "libdldarwin/dlfcn.h"
# endif
#endif
/*
* WHY we need to dlopen() this?! Why standard linkage isn't enough?
* Moreover: this shared module is used in just _one_ plaece (tcpvmexportd)
* and it is _always_ used, so I don't really see the point to make it
* a shared object. What am I missing? -- FR
*/
#include <pvm_interface.h>
#define MAX_BUF 1024
void *f_init_pvm_func(char *p_option,void *p_ret_handle)
{
const char *p_error;
char s_module[MAX_BUF];
void *p_handle;
if(!strcasecmp(p_option,"open"))
{
snprintf(s_module, sizeof(s_module), "%s/%s", MOD_PATH, M_LOAD_LIB);
p_handle=dlopen(s_module, RTLD_GLOBAL|RTLD_LAZY);
if (!p_handle)
{
fputs (dlerror(), stderr);
return(NULL);
}
f_pvm_start_single_process = dlsym(p_handle, "f_pvm_start_single_process");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_stop_single_process = dlsym(p_handle, "f_pvm_stop_single_process");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_master_start_stop = dlsym(p_handle, "f_pvm_master_start_stop");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_set_send = dlsym(p_handle, "f_pvm_set_send");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_send = dlsym(p_handle, "f_pvm_send");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_multi_send_nw = dlsym(p_handle, "f_pvm_multi_send_nw");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_multi_send = dlsym(p_handle, "f_pvm_multi_send");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_nrecv = dlsym(p_handle, "f_pvm_nrecv");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_recv = dlsym(p_handle, "f_pvm_recv");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_set_recv = dlsym(p_handle, "f_pvm_set_recv");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_set_nrecv = dlsym(p_handle, "f_pvm_set_nrecv");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
f_pvm_skeduler = dlsym(p_handle, "f_pvm_skeduler");
if ((p_error = dlerror()) != NULL)
{
fputs(p_error, stderr);
return(NULL);
}
return(p_handle);
}
else if(!strcasecmp(p_option,"close"))
{
if (p_ret_handle!=NULL)
dlclose(p_ret_handle);
return(NULL);
}
else
{
fprintf(stderr,"(%s) invalid command \"%s\"\n",__FILE__,p_option);
return(NULL);
}
}
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