cannam@95: /*
cannam@95:  * Copyright (c) 2003, 2007-11 Matteo Frigo
cannam@95:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
cannam@95:  *
cannam@95:  * This program is free software; you can redistribute it and/or modify
cannam@95:  * it under the terms of the GNU General Public License as published by
cannam@95:  * the Free Software Foundation; either version 2 of the License, or
cannam@95:  * (at your option) any later version.
cannam@95:  *
cannam@95:  * This program is distributed in the hope that it will be useful,
cannam@95:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@95:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@95:  * GNU General Public License for more details.
cannam@95:  *
cannam@95:  * You should have received a copy of the GNU General Public License
cannam@95:  * along with this program; if not, write to the Free Software
cannam@95:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@95:  *
cannam@95:  */
cannam@95: 
cannam@95: #include "api.h"
cannam@95: #include "threads.h"
cannam@95: 
cannam@95: static int threads_inited = 0;
cannam@95: 
cannam@95: static void threads_register_hooks(void)
cannam@95: {
cannam@95:      X(mksolver_ct_hook) = X(mksolver_ct_threads);
cannam@95:      X(mksolver_hc2hc_hook) = X(mksolver_hc2hc_threads);
cannam@95: }
cannam@95: 
cannam@95: static void threads_unregister_hooks(void)
cannam@95: {
cannam@95:      X(mksolver_ct_hook) = 0;
cannam@95:      X(mksolver_hc2hc_hook) = 0;
cannam@95: }
cannam@95: 
cannam@95: /* should be called before all other FFTW functions! */
cannam@95: int X(init_threads)(void)
cannam@95: {
cannam@95:      if (!threads_inited) {
cannam@95: 	  planner *plnr;
cannam@95: 
cannam@95:           if (X(ithreads_init)())
cannam@95:                return 0;
cannam@95: 
cannam@95: 	  threads_register_hooks();
cannam@95: 
cannam@95: 	  /* this should be the first time the_planner is called,
cannam@95: 	     and hence the time it is configured */
cannam@95: 	  plnr = X(the_planner)();
cannam@95: 	  X(threads_conf_standard)(plnr);
cannam@95: 	       
cannam@95:           threads_inited = 1;
cannam@95:      }
cannam@95:      return 1;
cannam@95: }
cannam@95: 
cannam@95: 
cannam@95: void X(cleanup_threads)(void)
cannam@95: {
cannam@95:      X(cleanup)();
cannam@95:      if (threads_inited) {
cannam@95: 	  X(threads_cleanup)();
cannam@95: 	  threads_unregister_hooks();
cannam@95: 	  threads_inited = 0;
cannam@95:      }
cannam@95: }
cannam@95: 
cannam@95: void X(plan_with_nthreads)(int nthreads)
cannam@95: {
cannam@95:      planner *plnr;
cannam@95: 
cannam@95:      if (!threads_inited) {
cannam@95: 	  X(cleanup)();
cannam@95: 	  X(init_threads)();
cannam@95:      }
cannam@95:      A(threads_inited);
cannam@95:      plnr = X(the_planner)();
cannam@95:      plnr->nthr = X(imax)(1, nthreads);
cannam@95: }