100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/* -*- c++ -*- ----------------------------------------------------------
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LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
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http://lammps.sandia.gov, Sandia National Laboratories
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Steve Plimpton, sjplimp@sandia.gov
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Copyright (2003) Sandia Corporation. Under the terms of Contract
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DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
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certain rights in this software. This software is distributed under
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the GNU General Public License.
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See the README file in the top-level LAMMPS directory.
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------------------------------------------------------------------------- */
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/*
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Variant of the C style library interface to LAMMPS
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that uses a shared library and dynamically opens it,
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so this can be used as a prototype code to integrate
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a LAMMPS plugin to some other software.
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*/
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#include "library.h"
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#include "liblammpsplugin.h"
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#include <stdlib.h>
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#include <dlfcn.h>
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liblammpsplugin_t *liblammpsplugin_load(const char *lib)
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{
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liblammpsplugin_t *lmp;
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void *handle;
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if (lib == NULL) return NULL;
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handle = dlopen(lib,RTLD_NOW|RTLD_GLOBAL);
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if (handle == NULL) return NULL;
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lmp = (liblammpsplugin_t *) malloc(sizeof(liblammpsplugin_t));
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lmp->handle = handle;
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#define ADDSYM(symbol) lmp->symbol = dlsym(handle,"lammps_" #symbol)
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ADDSYM(open);
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ADDSYM(open_no_mpi);
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ADDSYM(close);
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ADDSYM(version);
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ADDSYM(file);
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ADDSYM(command);
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ADDSYM(commands_list);
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ADDSYM(commands_string);
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ADDSYM(free);
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ADDSYM(extract_setting);
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ADDSYM(extract_global);
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ADDSYM(extract_box);
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ADDSYM(extract_atom);
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ADDSYM(extract_compute);
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ADDSYM(extract_fix);
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ADDSYM(extract_variable);
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ADDSYM(get_thermo);
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ADDSYM(get_natoms);
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ADDSYM(set_variable);
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ADDSYM(reset_box);
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ADDSYM(gather_atoms);
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ADDSYM(gather_atoms_concat);
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ADDSYM(gather_atoms_subset);
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ADDSYM(scatter_atoms);
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ADDSYM(scatter_atoms_subset);
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ADDSYM(set_fix_external_callback);
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ADDSYM(config_has_package);
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ADDSYM(config_package_count);
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ADDSYM(config_package_name);
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ADDSYM(config_has_gzip_support);
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ADDSYM(config_has_png_support);
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ADDSYM(config_has_jpeg_support);
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ADDSYM(config_has_ffmpeg_support);
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ADDSYM(config_has_exceptions);
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ADDSYM(create_atoms);
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#ifdef LAMMPS_EXCEPTIONS
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lmp->has_exceptions = 1;
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ADDSYM(has_error);
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ADDSYM(get_last_error_message);
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#else
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lmp->has_exceptions = 0;
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lmp->has_error = NULL;
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lmp->get_last_error_message = NULL;
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#endif
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return lmp;
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}
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int liblammpsplugin_release(liblammpsplugin_t *lmp)
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{
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if (lmp == NULL) return 1;
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if (lmp->handle == NULL) return 2;
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dlclose(lmp->handle);
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free((void *)lmp);
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return 0;
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}
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