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/* -*- c++ -*- ----------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
https://www.lammps.org/, Sandia National Laboratories
LAMMPS development team: developers@lammps.org
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
/*
Variant of the C style library interface to LAMMPS
that uses a shared library and dynamically opens it,
so this can be used as a prototype code to integrate
a LAMMPS plugin to some other software.
*/
#include "liblammpsplugin.h"
#if defined(_WIN32)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#if defined(_WIN32_WINNT)
#undef _WIN32_WINNT
#endif
// target Windows version is windows 7 and later
#define _WIN32_WINNT _WIN32_WINNT_WIN7
#define PSAPI_VERSION 2
#include <windows.h>
#else
#include <dlfcn.h>
#endif
#include <stdlib.h>
liblammpsplugin_t *liblammpsplugin_load(const char *lib)
{
liblammpsplugin_t *lmp;
void *handle;
if (lib == NULL) return NULL;
#ifdef _WIN32
handle = (void *) LoadLibrary(lib);
#else
handle = dlopen(lib,RTLD_NOW|RTLD_GLOBAL);
#endif
if (handle == NULL) return NULL;
lmp = (liblammpsplugin_t *) calloc(1, sizeof(liblammpsplugin_t));
lmp->abiversion = LAMMPSPLUGIN_ABI_VERSION;
lmp->handle = handle;
#ifdef _WIN32
#define ADDSYM(symbol) *(void **) (&lmp->symbol) = (void *) GetProcAddress((HINSTANCE) handle, "lammps_" #symbol)
#else
#define ADDSYM(symbol) *(void **) (&lmp->symbol) = dlsym(handle,"lammps_" #symbol)
#endif
#if defined(LAMMPS_LIB_MPI)
ADDSYM(open);
#else
lmp->open = NULL;
#endif
ADDSYM(open_no_mpi);
ADDSYM(open_fortran);
ADDSYM(close);
ADDSYM(mpi_init);
ADDSYM(mpi_finalize);
ADDSYM(kokkos_finalize);
ADDSYM(python_finalize);
ADDSYM(plugin_finalize);
ADDSYM(error);
ADDSYM(expand);
ADDSYM(file);
ADDSYM(command);
ADDSYM(commands_list);
ADDSYM(commands_string);
ADDSYM(get_natoms);
ADDSYM(get_thermo);
ADDSYM(last_thermo);
ADDSYM(extract_box);
ADDSYM(reset_box);
ADDSYM(memory_usage);
ADDSYM(get_mpi_comm);
ADDSYM(extract_setting);
ADDSYM(extract_global_datatype);
ADDSYM(extract_global);
ADDSYM(extract_pair_dimension);
ADDSYM(extract_pair);
ADDSYM(map_atom);
ADDSYM(extract_atom_datatype);
ADDSYM(extract_atom_size);
ADDSYM(extract_atom);
ADDSYM(extract_compute);
ADDSYM(extract_fix);
ADDSYM(extract_variable);
ADDSYM(extract_variable_datatype);
ADDSYM(set_variable);
ADDSYM(set_string_variable);
ADDSYM(set_internal_variable);
ADDSYM(variable_info);
ADDSYM(eval);
ADDSYM(clearstep_compute);
ADDSYM(addstep_compute);
ADDSYM(addstep_compute_all);
ADDSYM(gather_atoms);
ADDSYM(gather_atoms_concat);
ADDSYM(gather_atoms_subset);
ADDSYM(scatter_atoms);
ADDSYM(scatter_atoms_subset);
ADDSYM(gather_bonds);
ADDSYM(gather_angles);
ADDSYM(gather_dihedrals);
ADDSYM(gather_impropers);
ADDSYM(gather);
ADDSYM(gather_concat);
ADDSYM(gather_subset);
ADDSYM(scatter);
ADDSYM(scatter_subset);
ADDSYM(create_atoms);
ADDSYM(create_molecule);
ADDSYM(find_pair_neighlist);
ADDSYM(find_fix_neighlist);
ADDSYM(find_compute_neighlist);
ADDSYM(request_single_neighlist);
ADDSYM(neighlist_num_elements);
ADDSYM(neighlist_element_neighbors);
ADDSYM(version);
ADDSYM(get_os_info);
ADDSYM(config_has_mpi_support);
ADDSYM(config_has_omp_support);
ADDSYM(config_has_gzip_support);
ADDSYM(config_has_png_support);
ADDSYM(config_has_jpeg_support);
ADDSYM(config_has_ffmpeg_support);
ADDSYM(config_has_curl_support);
ADDSYM(config_has_exceptions);
ADDSYM(config_has_package);
ADDSYM(config_package_count);
ADDSYM(config_package_name);
ADDSYM(config_accelerator);
ADDSYM(has_gpu_device);
ADDSYM(get_gpu_device_info);
ADDSYM(has_style);
ADDSYM(style_count);
ADDSYM(style_name);
ADDSYM(has_id);
ADDSYM(id_count);
ADDSYM(id_name);
ADDSYM(plugin_count);
ADDSYM(plugin_name);
ADDSYM(encode_image_flags);
ADDSYM(decode_image_flags);
ADDSYM(set_fix_external_callback);
ADDSYM(fix_external_get_force);
ADDSYM(fix_external_set_energy_global);
ADDSYM(fix_external_set_energy_peratom);
ADDSYM(fix_external_set_virial_global);
ADDSYM(fix_external_set_virial_peratom);
ADDSYM(fix_external_set_vector_length);
ADDSYM(fix_external_set_vector);
ADDSYM(flush_buffers);
ADDSYM(free);
ADDSYM(is_running);
ADDSYM(force_timeout);
// symbol not present
if (!lmp->config_has_exceptions) return NULL;
lmp->has_exceptions = lmp->config_has_exceptions();
if (lmp->has_exceptions) {
ADDSYM(has_error);
ADDSYM(get_last_error_message);
}
ADDSYM(set_show_error);
ADDSYM(python_api_version);
return lmp;
}
int liblammpsplugin_release(liblammpsplugin_t *lmp)
{
if (lmp == NULL) return 1;
if (lmp->handle == NULL) return 2;
#ifdef _WIN32
FreeLibrary((HINSTANCE) lmp->handle);
#else
dlclose(lmp->handle);
#endif
free((void *)lmp);
return 0;
}
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