view Lib/fftw-3.2.1/threads/hc2hc.c @ 1:e86e9c111b29

Updates stuff that potentially fixes the memory leak and also makes it work on Windows and Linux (Need to test). Still have to fix fftw include for linux in Jucer.

/*
 * Copyright (c) 2003, 2007-8 Matteo Frigo
 * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology
 *
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "threads.h"

typedef struct {
     plan_rdft super;
     plan *cld;
     plan **cldws;
     int nthr;
     INT r;
} P;

typedef struct {
     plan **cldws;
     R *IO;
} PD;

static void *spawn_apply(spawn_data *d)
WITH_ALIGNED_STACK({
     PD *ego = (PD *) d->data;
     
     plan_hc2hc *cldw = (plan_hc2hc *) (ego->cldws[d->thr_num]);
     cldw->apply((plan *) cldw, ego->IO);
     return 0;
})

static void apply_dit(const plan *ego_, R *I, R *O)
{
     const P *ego = (const P *) ego_;
     plan_rdft *cld;

     cld = (plan_rdft *) ego->cld;
     cld->apply((plan *) cld, I, O);

     {
	  PD d;
	  
	  d.IO = O;
	  d.cldws = ego->cldws;

	  X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*)&d);
     }
}

static void apply_dif(const plan *ego_, R *I, R *O)
{
     const P *ego = (const P *) ego_;
     plan_rdft *cld;

     {
	  PD d;
	  
	  d.IO = I;
	  d.cldws = ego->cldws;

	  X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*)&d);
     }

     cld = (plan_rdft *) ego->cld;
     cld->apply((plan *) cld, I, O);
}

static void awake(plan *ego_, enum wakefulness wakefulness)
{
     P *ego = (P *) ego_;
     int i;
     X(plan_awake)(ego->cld, wakefulness);
     for (i = 0; i < ego->nthr; ++i)
	  X(plan_awake)(ego->cldws[i], wakefulness);
}

static void destroy(plan *ego_)
{
     P *ego = (P *) ego_;
     int i;
     X(plan_destroy_internal)(ego->cld);
     for (i = 0; i < ego->nthr; ++i)
	  X(plan_destroy_internal)(ego->cldws[i]);
     X(ifree)(ego->cldws);
}

static void print(const plan *ego_, printer *p)
{
     const P *ego = (const P *) ego_;
     int i;
     p->print(p, "(rdft-thr-ct-%s-x%d/%D",
	      ego->super.apply == apply_dit ? "dit" : "dif",
	      ego->nthr, ego->r);
     for (i = 0; i < ego->nthr; ++i)
          if (i == 0 || (ego->cldws[i] != ego->cldws[i-1] &&
                         (i <= 1 || ego->cldws[i] != ego->cldws[i-2])))
               p->print(p, "%(%p%)", ego->cldws[i]);
     p->print(p, "%(%p%))", ego->cld);
}

static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr)
{
     const hc2hc_solver *ego = (const hc2hc_solver *) ego_;
     const problem_rdft *p;
     P *pln = 0;
     plan *cld = 0, **cldws = 0;
     INT n, r, m, v, ivs, ovs, mcount;
     int i, nthr, plnr_nthr_save;
     INT block_size;
     iodim *d;

     static const plan_adt padt = {
	  X(rdft_solve), awake, print, destroy
     };

     if (plnr->nthr <= 1 || !X(hc2hc_applicable)(ego, p_, plnr))
          return (plan *) 0;

     p = (const problem_rdft *) p_;
     d = p->sz->dims;
     n = d[0].n;
     r = X(choose_radix)(ego->r, n);
     m = n / r;
     mcount = (m + 2) / 2;

     X(tensor_tornk1)(p->vecsz, &v, &ivs, &ovs);

     block_size = (mcount + plnr->nthr - 1) / plnr->nthr;
     nthr = (int)((mcount + block_size - 1) / block_size);
     plnr_nthr_save = plnr->nthr;
     plnr->nthr = (plnr->nthr + nthr - 1) / nthr;

     cldws = (plan **) MALLOC(sizeof(plan *) * nthr, PLANS);
     for (i = 0; i < nthr; ++i) cldws[i] = (plan *) 0;

     switch (p->kind[0]) {
	 case R2HC:
	      for (i = 0; i < nthr; ++i) {
		   cldws[i] = ego->mkcldw(ego, 
					  R2HC, r, m, d[0].os, v, ovs, 
					  i*block_size, 
					  (i == nthr - 1) ? 
					  (mcount - i*block_size) : block_size,
					  p->O, plnr);
		   if (!cldws[i]) goto nada;
	      }

	      plnr->nthr = plnr_nthr_save;

	      cld = X(mkplan_d)(plnr, 
				X(mkproblem_rdft_d)(
				     X(mktensor_1d)(m, r * d[0].is, d[0].os),
				     X(mktensor_2d)(r, d[0].is, m * d[0].os,
						    v, ivs, ovs),
				     p->I, p->O, p->kind)
		   );
	      if (!cld) goto nada;

	      pln = MKPLAN_RDFT(P, &padt, apply_dit);
	      break;

	 case HC2R:
	      for (i = 0; i < nthr; ++i) {
		   cldws[i] = ego->mkcldw(ego, 
					  HC2R, r, m, d[0].is, v, ivs, 
					  i*block_size, 
					  (i == nthr - 1) ? 
					  (mcount - i*block_size) : block_size,
					  p->I, plnr);
		   if (!cldws[i]) goto nada;
	      }

	      plnr->nthr = plnr_nthr_save;

	      cld = X(mkplan_d)(plnr, 
				X(mkproblem_rdft_d)(
				     X(mktensor_1d)(m, d[0].is, r * d[0].os),
				     X(mktensor_2d)(r, m * d[0].is, d[0].os,
						    v, ivs, ovs),
				     p->I, p->O, p->kind)
		   );
	      if (!cld) goto nada;
	      
	      pln = MKPLAN_RDFT(P, &padt, apply_dif);
	      break;

	 default: 
	      A(0);
     }

     pln->cld = cld;
     pln->cldws = cldws;
     pln->nthr = nthr;
     pln->r = r;
     X(ops_zero)(&pln->super.super.ops);
     for (i = 0; i < nthr; ++i)
          X(ops_add2)(&cldws[i]->ops, &pln->super.super.ops);
     X(ops_add2)(&cld->ops, &pln->super.super.ops);
     return &(pln->super.super);

 nada:
     if (cldws) {
	  for (i = 0; i < nthr; ++i)
	       X(plan_destroy_internal)(cldws[i]);
	  X(ifree)(cldws);
     }
     X(plan_destroy_internal)(cld);
     return (plan *) 0;
}

hc2hc_solver *X(mksolver_hc2hc_threads)(size_t size, INT r, 
					hc2hc_mkinferior mkcldw)
{
     static const solver_adt sadt = { PROBLEM_RDFT, mkplan, 0 };
     hc2hc_solver *slv = (hc2hc_solver *)X(mksolver)(size, &sadt);
     slv->r = r;
     slv->mkcldw = mkcldw;
     return slv;
}