Chris@42: /*
Chris@42:  * Copyright (c) 2003, 2007-14 Matteo Frigo
Chris@42:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
Chris@42:  *
Chris@42:  * This program is free software; you can redistribute it and/or modify
Chris@42:  * it under the terms of the GNU General Public License as published by
Chris@42:  * the Free Software Foundation; either version 2 of the License, or
Chris@42:  * (at your option) any later version.
Chris@42:  *
Chris@42:  * This program is distributed in the hope that it will be useful,
Chris@42:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@42:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@42:  * GNU General Public License for more details.
Chris@42:  *
Chris@42:  * You should have received a copy of the GNU General Public License
Chris@42:  * along with this program; if not, write to the Free Software
Chris@42:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@42:  *
Chris@42:  */
Chris@42: 
Chris@42: #include "api.h"
Chris@42: #include "threads.h"
Chris@42: 
Chris@42: static int threads_inited = 0;
Chris@42: 
Chris@42: static void threads_register_hooks(void)
Chris@42: {
Chris@42:      X(mksolver_ct_hook) = X(mksolver_ct_threads);
Chris@42:      X(mksolver_hc2hc_hook) = X(mksolver_hc2hc_threads);
Chris@42: }
Chris@42: 
Chris@42: static void threads_unregister_hooks(void)
Chris@42: {
Chris@42:      X(mksolver_ct_hook) = 0;
Chris@42:      X(mksolver_hc2hc_hook) = 0;
Chris@42: }
Chris@42: 
Chris@42: /* should be called before all other FFTW functions! */
Chris@42: int X(init_threads)(void)
Chris@42: {
Chris@42:      if (!threads_inited) {
Chris@42: 	  planner *plnr;
Chris@42: 
Chris@42:           if (X(ithreads_init)())
Chris@42:                return 0;
Chris@42: 
Chris@42: 	  threads_register_hooks();
Chris@42: 
Chris@42: 	  /* this should be the first time the_planner is called,
Chris@42: 	     and hence the time it is configured */
Chris@42: 	  plnr = X(the_planner)();
Chris@42: 	  X(threads_conf_standard)(plnr);
Chris@42: 	       
Chris@42:           threads_inited = 1;
Chris@42:      }
Chris@42:      return 1;
Chris@42: }
Chris@42: 
Chris@42: 
Chris@42: void X(cleanup_threads)(void)
Chris@42: {
Chris@42:      X(cleanup)();
Chris@42:      if (threads_inited) {
Chris@42: 	  X(threads_cleanup)();
Chris@42: 	  threads_unregister_hooks();
Chris@42: 	  threads_inited = 0;
Chris@42:      }
Chris@42: }
Chris@42: 
Chris@42: void X(plan_with_nthreads)(int nthreads)
Chris@42: {
Chris@42:      planner *plnr;
Chris@42: 
Chris@42:      if (!threads_inited) {
Chris@42: 	  X(cleanup)();
Chris@42: 	  X(init_threads)();
Chris@42:      }
Chris@42:      A(threads_inited);
Chris@42:      plnr = X(the_planner)();
Chris@42:      plnr->nthr = X(imax)(1, nthreads);
Chris@42: }
Chris@42: 
Chris@42: void X(make_planner_thread_safe)(void)
Chris@42: {
Chris@42:      X(threads_register_planner_hooks)();
Chris@42: }