Updates

fftw-3.3.10/threads/Makefile.am

@@ -0,0 +1,36 @@
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+endif
+
+if THREADS
+if COMBINED_THREADS
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+else
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+endif
+else
+lib_LTLIBRARIES = $(FFTWOMPLIB)
+endif
+
+libfftw3@PREC_SUFFIX@_threads_la_SOURCES = api.c conf.c threads.c	\
+threads.h dft-vrank-geq1.c ct.c rdft-vrank-geq1.c hc2hc.c		\
+vrank-geq1-rdft2.c f77api.c f77funcs.h
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+endif
+
+libfftw3@PREC_SUFFIX@_omp_la_SOURCES = api.c conf.c openmp.c	\
+threads.h dft-vrank-geq1.c ct.c rdft-vrank-geq1.c hc2hc.c	\
+vrank-geq1-rdft2.c f77api.c f77funcs.h
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+libfftw3@PREC_SUFFIX@_omp_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
+if !COMBINED_THREADS
+libfftw3@PREC_SUFFIX@_omp_la_LIBADD = ../libfftw3@PREC_SUFFIX@.la
+endif

fftw-3.3.10/threads/Makefile.in

@@ -0,0 +1,897 @@
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+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+	for dir in "$(DESTDIR)$(libdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
+	clean-noinstLTLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-conf.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-ct.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-dft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-f77api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-hc2hc.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-openmp.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-rdft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-vrank-geq1-rdft2.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-conf.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-ct.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-dft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-f77api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-hc2hc.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-rdft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-threads.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-vrank-geq1-rdft2.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-conf.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-ct.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-dft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-f77api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-hc2hc.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-openmp.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-rdft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_omp_la-vrank-geq1-rdft2.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-conf.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-ct.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-dft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-f77api.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-hc2hc.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-rdft-vrank-geq1.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-threads.Plo
+	-rm -f ./$(DEPDIR)/libfftw3@PREC_SUFFIX@_threads_la-vrank-geq1-rdft2.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-libLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am am--depfiles check check-am clean clean-generic \
+	clean-libLTLIBRARIES clean-libtool clean-noinstLTLIBRARIES \
+	cscopelist-am ctags-am distclean distclean-compile \
+	distclean-generic distclean-libtool distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-libLTLIBRARIES install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags-am uninstall uninstall-am uninstall-libLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:

fftw-3.3.10/threads/api.c

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "api/api.h"
+#include "threads/threads.h"
+
+static int threads_inited = 0;
+
+static void threads_register_hooks(void)
+{
+     X(mksolver_ct_hook) = X(mksolver_ct_threads);
+     X(mksolver_hc2hc_hook) = X(mksolver_hc2hc_threads);
+}
+
+static void threads_unregister_hooks(void)
+{
+     X(mksolver_ct_hook) = 0;
+     X(mksolver_hc2hc_hook) = 0;
+}
+
+/* should be called before all other FFTW functions! */
+int X(init_threads)(void)
+{
+     if (!threads_inited) {
+	  planner *plnr;
+
+          if (X(ithreads_init)())
+               return 0;
+
+	  threads_register_hooks();
+
+	  /* this should be the first time the_planner is called,
+	     and hence the time it is configured */
+	  plnr = X(the_planner)();
+	  X(threads_conf_standard)(plnr);
+
+          threads_inited = 1;
+     }
+     return 1;
+}
+
+
+void X(cleanup_threads)(void)
+{
+     X(cleanup)();
+     if (threads_inited) {
+	  X(threads_cleanup)();
+	  threads_unregister_hooks();
+	  threads_inited = 0;
+     }
+}
+
+void X(plan_with_nthreads)(int nthreads)
+{
+     planner *plnr;
+
+     if (!threads_inited) {
+	  X(cleanup)();
+	  X(init_threads)();
+     }
+     A(threads_inited);
+     plnr = X(the_planner)();
+     plnr->nthr = X(imax)(1, nthreads);
+}
+
+int X(planner_nthreads)(void)
+{
+    return X(the_planner)()->nthr;
+}
+
+void X(make_planner_thread_safe)(void)
+{
+     X(threads_register_planner_hooks)();
+}
+
+spawnloop_function X(spawnloop_callback) = (spawnloop_function) 0;
+void *X(spawnloop_callback_data) = (void *) 0;
+void X(threads_set_callback)(void (*spawnloop)(void *(*work)(char *), char *, size_t, int, void *), void *data)
+{
+     X(spawnloop_callback) = (spawnloop_function) spawnloop;
+     X(spawnloop_callback_data) = data;
+}

fftw-3.3.10/threads/conf.c

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+
+#include "threads/threads.h"
+
+static const solvtab s =
+{
+     SOLVTAB(X(dft_thr_vrank_geq1_register)),
+     SOLVTAB(X(rdft_thr_vrank_geq1_register)),
+     SOLVTAB(X(rdft2_thr_vrank_geq1_register)),
+
+     SOLVTAB_END
+};
+
+void X(threads_conf_standard)(planner *p)
+{
+     X(solvtab_exec)(s, p);
+}

fftw-3.3.10/threads/ct.c

@@ -0,0 +1,271 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+
+#include "threads/threads.h"
+
+typedef struct {
+     plan_dft super;
+     plan *cld;
+     plan **cldws;
+     int nthr;
+     INT r;
+} P;
+
+typedef struct {
+     plan **cldws;
+     R *r, *i;
+} PD;
+
+static void *spawn_apply(spawn_data *d)
+{
+     PD *ego = (PD *) d->data;
+     INT thr_num = d->thr_num;
+
+     plan_dftw *cldw = (plan_dftw *) (ego->cldws[thr_num]);
+     cldw->apply((plan *) cldw, ego->r, ego->i);
+     return 0;
+}
+
+static void apply_dit(const plan *ego_, R *ri, R *ii, R *ro, R *io)
+{
+     const P *ego = (const P *) ego_;
+     plan_dft *cld;
+
+     cld = (plan_dft *) ego->cld;
+     cld->apply(ego->cld, ri, ii, ro, io);
+
+     {
+	  PD d;
+
+	  d.r = ro; d.i = io;
+	  d.cldws = ego->cldws;
+
+	  X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*)&d);
+     }
+}
+
+static void apply_dif(const plan *ego_, R *ri, R *ii, R *ro, R *io)
+{
+     const P *ego = (const P *) ego_;
+     plan_dft *cld;
+
+     {
+	  PD d;
+
+	  d.r = ri; d.i = ii;
+	  d.cldws = ego->cldws;
+
+	  X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*)&d);
+     }
+
+     cld = (plan_dft *) ego->cld;
+     cld->apply(ego->cld, ri, ii, ro, io);
+}
+
+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, "(dft-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 ct_solver *ego = (const ct_solver *) ego_;
+     const problem_dft *p;
+     P *pln = 0;
+     plan *cld = 0, **cldws = 0;
+     INT n, r, m, v, ivs, ovs;
+     INT block_size;
+     int i, nthr, plnr_nthr_save;
+     iodim *d;
+
+     static const plan_adt padt = {
+	  X(dft_solve), awake, print, destroy
+     };
+
+     if (plnr->nthr <= 1 || !X(ct_applicable)(ego, p_, plnr))
+          return (plan *) 0;
+
+     p = (const problem_dft *) p_;
+     d = p->sz->dims;
+     n = d[0].n;
+     r = X(choose_radix)(ego->r, n);
+     m = n / r;
+
+     X(tensor_tornk1)(p->vecsz, &v, &ivs, &ovs);
+
+     block_size = (m + plnr->nthr - 1) / plnr->nthr;
+     nthr = (int)((m + 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 (ego->dec) {
+	 case DECDIT:
+	 {
+	      for (i = 0; i < nthr; ++i) {
+		   cldws[i] = ego->mkcldw(ego,
+					  r, m * d[0].os, m * d[0].os,
+					  m, d[0].os,
+					  v, ovs, ovs,
+					  i*block_size,
+					  (i == nthr - 1) ?
+					  (m - i*block_size) : block_size,
+					  p->ro, p->io, plnr);
+		   if (!cldws[i]) goto nada;
+	      }
+
+	      plnr->nthr = plnr_nthr_save;
+
+	      cld = X(mkplan_d)(plnr,
+				X(mkproblem_dft_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->ri, p->ii, p->ro, p->io)
+		   );
+	      if (!cld) goto nada;
+
+	      pln = MKPLAN_DFT(P, &padt, apply_dit);
+	      break;
+	 }
+	 case DECDIF:
+	 case DECDIF+TRANSPOSE:
+	 {
+	      INT cors, covs; /* cldw ors, ovs */
+	      if (ego->dec == DECDIF+TRANSPOSE) {
+		   cors = ivs;
+		   covs = m * d[0].is;
+		   /* ensure that we generate well-formed dftw subproblems */
+		   /* FIXME: too conservative */
+		   if (!(1
+			 && r == v
+			 && d[0].is == r * cors))
+			goto nada;
+
+		   /* FIXME: allow in-place only for now, like in
+		      fftw-3.[01] */
+		   if (!(1
+			 && p->ri == p->ro
+			 && d[0].is == r * d[0].os
+			 && cors == d[0].os
+			 && covs == ovs
+			    ))
+			goto nada;
+	      } else {
+		   cors = m * d[0].is;
+		   covs = ivs;
+	      }
+
+	      for (i = 0; i < nthr; ++i) {
+		   cldws[i] = ego->mkcldw(ego,
+					  r, m * d[0].is, cors,
+					  m, d[0].is,
+					  v, ivs, covs,
+					  i*block_size,
+					  (i == nthr - 1) ?
+					  (m - i*block_size) : block_size,
+					  p->ri, p->ii, plnr);
+		   if (!cldws[i]) goto nada;
+	      }
+
+	      plnr->nthr = plnr_nthr_save;
+
+	      cld = X(mkplan_d)(plnr,
+				X(mkproblem_dft_d)(
+				     X(mktensor_1d)(m, d[0].is, r * d[0].os),
+				     X(mktensor_2d)(r, cors, d[0].os,
+						    v, covs, ovs),
+				     p->ri, p->ii, p->ro, p->io)
+		   );
+	      if (!cld) goto nada;
+
+	      pln = MKPLAN_DFT(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);
+	  pln->super.super.could_prune_now_p |= cldws[i]->could_prune_now_p;
+     }
+     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;
+}
+
+ct_solver *X(mksolver_ct_threads)(size_t size, INT r, int dec,
+				  ct_mkinferior mkcldw,
+				  ct_force_vrecursion force_vrecursionp)
+{
+     static const solver_adt sadt = { PROBLEM_DFT, mkplan, 0 };
+     ct_solver *slv = (ct_solver *) X(mksolver)(size, &sadt);
+     slv->r = r;
+     slv->dec = dec;
+     slv->mkcldw = mkcldw;
+     slv->force_vrecursionp = force_vrecursionp;
+     return slv;
+}

fftw-3.3.10/threads/dft-vrank-geq1.c

@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+
+#include "threads/threads.h"
+
+typedef struct {
+     solver super;
+     int vecloop_dim;
+     const int *buddies;
+     size_t nbuddies;
+} S;
+
+typedef struct {
+     plan_dft super;
+     plan **cldrn;
+     INT its, ots;
+     int nthr;
+     const S *solver;
+} P;
+
+typedef struct {
+     INT its, ots;
+     R *ri, *ii, *ro, *io;
+     plan **cldrn;
+} PD;
+
+static void *spawn_apply(spawn_data *d)
+{
+     PD *ego = (PD *) d->data;
+     INT its = ego->its;
+     INT ots = ego->ots;
+     int thr_num = d->thr_num;
+     plan_dft *cld = (plan_dft *) ego->cldrn[thr_num];
+
+     cld->apply((plan *) cld,
+		ego->ri + thr_num * its, ego->ii + thr_num * its,
+		ego->ro + thr_num * ots, ego->io + thr_num * ots);
+     return 0;
+}
+
+static void apply(const plan *ego_, R *ri, R *ii, R *ro, R *io)
+{
+     const P *ego = (const P *) ego_;
+     PD d;
+
+     d.its = ego->its;
+     d.ots = ego->ots;
+     d.cldrn = ego->cldrn;
+     d.ri = ri; d.ii = ii; d.ro = ro; d.io = io;
+
+     X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*) &d);
+}
+
+static void awake(plan *ego_, enum wakefulness wakefulness)
+{
+     P *ego = (P *) ego_;
+     int i;
+     for (i = 0; i < ego->nthr; ++i)
+	  X(plan_awake)(ego->cldrn[i], wakefulness);
+}
+
+static void destroy(plan *ego_)
+{
+     P *ego = (P *) ego_;
+     int i;
+     for (i = 0; i < ego->nthr; ++i)
+	  X(plan_destroy_internal)(ego->cldrn[i]);
+     X(ifree)(ego->cldrn);
+}
+
+static void print(const plan *ego_, printer *p)
+{
+     const P *ego = (const P *) ego_;
+     const S *s = ego->solver;
+     int i;
+     p->print(p, "(dft-thr-vrank>=1-x%d/%d", ego->nthr, s->vecloop_dim);
+     for (i = 0; i < ego->nthr; ++i)
+	  if (i == 0 || (ego->cldrn[i] != ego->cldrn[i-1] &&
+			 (i <= 1 || ego->cldrn[i] != ego->cldrn[i-2])))
+	       p->print(p, "%(%p%)", ego->cldrn[i]);
+     p->putchr(p, ')');
+}
+
+static int pickdim(const S *ego, const tensor *vecsz, int oop, int *dp)
+{
+     return X(pickdim)(ego->vecloop_dim, ego->buddies, ego->nbuddies,
+                       vecsz, oop, dp);
+}
+
+static int applicable0(const solver *ego_, const problem *p_,
+		       const planner *plnr, int *dp)
+{
+     const S *ego = (const S *) ego_;
+     const problem_dft *p = (const problem_dft *) p_;
+
+     return (1
+	     && plnr->nthr > 1
+	     && FINITE_RNK(p->vecsz->rnk)
+	     && p->vecsz->rnk > 0
+	     && pickdim(ego, p->vecsz, p->ri != p->ro, dp)
+	  );
+}
+
+static int applicable(const solver *ego_, const problem *p_,
+		      const planner *plnr, int *dp)
+{
+     const S *ego = (const S *)ego_;
+
+     if (!applicable0(ego_, p_, plnr, dp)) return 0;
+
+     /* fftw2 behavior */
+     if (NO_VRANK_SPLITSP(plnr) && (ego->vecloop_dim != ego->buddies[0]))
+	  return 0;
+
+     return 1;
+}
+
+static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr)
+{
+     const S *ego = (const S *) ego_;
+     const problem_dft *p;
+     P *pln;
+     problem *cldp;
+     int vdim;
+     iodim *d;
+     plan **cldrn = (plan **) 0;
+     int i, nthr;
+     INT its, ots, block_size;
+     tensor *vecsz = 0;
+
+     static const plan_adt padt = {
+	  X(dft_solve), awake, print, destroy
+     };
+
+     if (!applicable(ego_, p_, plnr, &vdim))
+          return (plan *) 0;
+     p = (const problem_dft *) p_;
+     d = p->vecsz->dims + vdim;
+
+     block_size = (d->n + plnr->nthr - 1) / plnr->nthr;
+     nthr = (int)((d->n + block_size - 1) / block_size);
+     plnr->nthr = (plnr->nthr + nthr - 1) / nthr;
+     its = d->is * block_size;
+     ots = d->os * block_size;
+
+     cldrn = (plan **)MALLOC(sizeof(plan *) * nthr, PLANS);
+     for (i = 0; i < nthr; ++i) cldrn[i] = (plan *) 0;
+     
+     vecsz = X(tensor_copy)(p->vecsz);
+     for (i = 0; i < nthr; ++i) {
+	  vecsz->dims[vdim].n =
+	       (i == nthr - 1) ? (d->n - i*block_size) : block_size;
+	  cldp = X(mkproblem_dft)(p->sz, vecsz,
+				  p->ri + i*its, p->ii + i*its, 
+				  p->ro + i*ots, p->io + i*ots);
+	  cldrn[i] = X(mkplan_d)(plnr, cldp);
+	  if (!cldrn[i]) goto nada;
+     }
+     X(tensor_destroy)(vecsz);
+
+     pln = MKPLAN_DFT(P, &padt, apply);
+
+     pln->cldrn = cldrn;
+     pln->its = its;
+     pln->ots = ots;
+     pln->nthr = nthr;
+
+     pln->solver = ego;
+     X(ops_zero)(&pln->super.super.ops);
+     pln->super.super.pcost = 0;
+     for (i = 0; i < nthr; ++i) {
+	  X(ops_add2)(&cldrn[i]->ops, &pln->super.super.ops);
+	  pln->super.super.pcost += cldrn[i]->pcost;
+     }
+
+     return &(pln->super.super);
+
+ nada:
+     if (cldrn) {
+	  for (i = 0; i < nthr; ++i)
+	       X(plan_destroy_internal)(cldrn[i]);
+	  X(ifree)(cldrn);
+     }
+     X(tensor_destroy)(vecsz);
+     return (plan *) 0;
+}
+
+static solver *mksolver(int vecloop_dim, const int *buddies, size_t nbuddies)
+{
+     static const solver_adt sadt = { PROBLEM_DFT, mkplan, 0 };
+     S *slv = MKSOLVER(S, &sadt);
+     slv->vecloop_dim = vecloop_dim;
+     slv->buddies = buddies;
+     slv->nbuddies = nbuddies;
+     return &(slv->super);
+}
+
+void X(dft_thr_vrank_geq1_register)(planner *p)
+{
+     /* FIXME: Should we try other vecloop_dim values? */
+     static const int buddies[] = { 1, -1 };
+     size_t i;
+
+     for (i = 0; i < NELEM(buddies); ++i)
+          REGISTER_SOLVER(p, mksolver(buddies[i], buddies, NELEM(buddies)));
+}

fftw-3.3.10/threads/f77api.c

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "api/api.h"
+
+/* if F77_FUNC is not defined, then we don't know how to mangle identifiers
+   for the Fortran linker, and we must omit the f77 API. */
+#if defined(F77_FUNC) || defined(WINDOWS_F77_MANGLING)
+
+#include "api/x77.h"
+
+#define F77(a, A) F77x(x77(a), X77(A))
+
+#ifndef WINDOWS_F77_MANGLING
+
+#if defined(F77_FUNC)
+#  define F77x(a, A) F77_FUNC(a, A)
+#  include "f77funcs.h"
+#endif
+
+#if defined(F77_FUNC_) && !defined(F77_FUNC_EQUIV)
+#  undef F77x
+#  define F77x(a, A) F77_FUNC_(a, A)
+#  include "f77funcs.h"
+#endif
+
+#else /* WINDOWS_F77_MANGLING */
+
+/* Various mangling conventions common (?) under Windows. */
+
+/* g77 */
+#  define WINDOWS_F77_FUNC(a, A) a ## __
+#  define F77x(a, A) WINDOWS_F77_FUNC(a, A)
+#  include "f77funcs.h"
+
+/* Intel, etc. */
+#  undef WINDOWS_F77_FUNC
+#  define WINDOWS_F77_FUNC(a, A) a ## _
+#  include "f77funcs.h"
+
+/* Digital/Compaq/HP Visual Fortran, Intel Fortran.  stdcall attribute
+   is apparently required to adjust for calling conventions (callee
+   pops stack in stdcall).  See also:
+       http://msdn.microsoft.com/library/en-us/vccore98/html/_core_mixed.2d.language_programming.3a_.overview.asp
+*/
+#  undef WINDOWS_F77_FUNC
+#  if defined(__GNUC__)
+#    define WINDOWS_F77_FUNC(a, A) __attribute__((stdcall)) A
+#  elif defined(_MSC_VER) || defined(_ICC) || defined(_STDCALL_SUPPORTED)
+#    define WINDOWS_F77_FUNC(a, A) __stdcall A
+#  else
+#    define WINDOWS_F77_FUNC(a, A) A /* oh well */
+#  endif
+#  include "f77funcs.h"
+
+#endif /* WINDOWS_F77_MANGLING */
+
+#endif				/* F77_FUNC */

fftw-3.3.10/threads/f77funcs.h

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+/* Functions in the FFTW Fortran API, mangled according to the
+   F77(...) macro.  This file is designed to be #included by
+   f77api.c, possibly multiple times in order to support multiple
+   compiler manglings (via redefinition of F77). */
+
+FFTW_VOIDFUNC F77(plan_with_nthreads, PLAN_WITH_NTHREADS)(int *nthreads)
+{
+     X(plan_with_nthreads)(*nthreads);
+}
+
+FFTW_VOIDFUNC F77(planner_nthreads, PLANNER_NTHREADS)(int *nthreads)
+{
+    *nthreads = X(planner_nthreads)();
+}
+
+FFTW_VOIDFUNC F77(init_threads, INIT_THREADS)(int *okay)
+{
+     *okay = X(init_threads)();
+}
+
+FFTW_VOIDFUNC F77(cleanup_threads, CLEANUP_THREADS)(void)
+{
+     X(cleanup_threads)();
+}

fftw-3.3.10/threads/hc2hc.c

@@ -0,0 +1,234 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#include "threads/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)
+{
+     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);
+	  pln->super.super.could_prune_now_p |= cldws[i]->could_prune_now_p;
+     }
+     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;
+}

fftw-3.3.10/threads/openmp.c

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+/* openmp.c: thread spawning via OpenMP  */
+
+#include "threads/threads.h"
+
+#if !defined(_OPENMP)
+#error OpenMP enabled but not using an OpenMP compiler
+#endif
+
+int X(ithreads_init)(void)
+{
+     return 0; /* no error */
+}
+
+/* Distribute a loop from 0 to loopmax-1 over nthreads threads.
+   proc(d) is called to execute a block of iterations from d->min
+   to d->max-1.  d->thr_num indicate the number of the thread
+   that is executing proc (from 0 to nthreads-1), and d->data is
+   the same as the data parameter passed to X(spawn_loop).
+
+   This function returns only after all the threads have completed. */
+void X(spawn_loop)(int loopmax, int nthr, spawn_function proc, void *data)
+{
+     int block_size;
+     spawn_data d;
+     int i;
+
+     A(loopmax >= 0);
+     A(nthr > 0);
+     A(proc);
+
+     if (!loopmax) return;
+
+     /* Choose the block size and number of threads in order to (1)
+        minimize the critical path and (2) use the fewest threads that
+        achieve the same critical path (to minimize overhead).
+        e.g. if loopmax is 5 and nthr is 4, we should use only 3
+        threads with block sizes of 2, 2, and 1. */
+     block_size = (loopmax + nthr - 1) / nthr;
+     nthr = (loopmax + block_size - 1) / block_size;
+
+     if (X(spawnloop_callback)) { /* user-defined spawnloop backend */
+          spawn_data *sdata;
+          STACK_MALLOC(spawn_data *, sdata, sizeof(spawn_data) * nthr);
+          for (i = 0; i < nthr; ++i) {
+               spawn_data *d = &sdata[i];
+               d->max = (d->min = i * block_size) + block_size;
+               if (d->max > loopmax)
+                    d->max = loopmax;
+               d->thr_num = i;
+               d->data = data;
+          }
+          X(spawnloop_callback)(proc, sdata, sizeof(spawn_data), nthr, X(spawnloop_callback_data));
+          STACK_FREE(sdata);
+          return;
+     }
+
+#pragma omp parallel for private(d)
+     for (i = 0; i < nthr; ++i) {
+	  d.max = (d.min = i * block_size) + block_size;
+	  if (d.max > loopmax)
+	       d.max = loopmax;
+	  d.thr_num = i;
+	  d.data = data;
+	  proc(&d);
+     }
+}
+
+void X(threads_cleanup)(void)
+{
+}
+
+/* FIXME [Matteo Frigo 2015-05-25] What does "thread-safe"
+   mean for openmp? */
+void X(threads_register_planner_hooks)(void)
+{
+}

fftw-3.3.10/threads/rdft-vrank-geq1.c

@@ -0,0 +1,222 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+
+#include "threads/threads.h"
+
+typedef struct {
+     solver super;
+     int vecloop_dim;
+     const int *buddies;
+     size_t nbuddies;
+} S;
+
+typedef struct {
+     plan_rdft super;
+     plan **cldrn;
+     INT its, ots;
+     int nthr;
+     const S *solver;
+} P;
+
+typedef struct {
+     INT its, ots;
+     R *I, *O;
+     plan **cldrn;
+} PD;
+
+static void *spawn_apply(spawn_data *d)
+{
+     PD *ego = (PD *) d->data;
+     int thr_num = d->thr_num;
+     plan_rdft *cld = (plan_rdft *) ego->cldrn[d->thr_num];
+
+     cld->apply((plan *) cld,
+		ego->I + thr_num * ego->its, ego->O + thr_num * ego->ots);
+     return 0;
+}
+
+static void apply(const plan *ego_, R *I, R *O)
+{
+     const P *ego = (const P *) ego_;
+     PD d;
+
+     d.its = ego->its;
+     d.ots = ego->ots;
+     d.cldrn = ego->cldrn;
+     d.I = I; d.O = O;
+
+     X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*) &d);
+}
+
+static void awake(plan *ego_, enum wakefulness wakefulness)
+{
+     P *ego = (P *) ego_;
+     int i;
+     for (i = 0; i < ego->nthr; ++i)
+	  X(plan_awake)(ego->cldrn[i], wakefulness);
+}
+
+static void destroy(plan *ego_)
+{
+     P *ego = (P *) ego_;
+     int i;
+     for (i = 0; i < ego->nthr; ++i)
+	  X(plan_destroy_internal)(ego->cldrn[i]);
+     X(ifree)(ego->cldrn);
+}
+
+static void print(const plan *ego_, printer *p)
+{
+     const P *ego = (const P *) ego_;
+     const S *s = ego->solver;
+     int i;
+     p->print(p, "(rdft-thr-vrank>=1-x%d/%d", ego->nthr, s->vecloop_dim);
+     for (i = 0; i < ego->nthr; ++i)
+	  if (i == 0 || (ego->cldrn[i] != ego->cldrn[i-1] &&
+			 (i <= 1 || ego->cldrn[i] != ego->cldrn[i-2])))
+	       p->print(p, "%(%p%)", ego->cldrn[i]);
+     p->putchr(p, ')');
+}
+
+static int pickdim(const S *ego, const tensor *vecsz, int oop, int *dp)
+{
+     return X(pickdim)(ego->vecloop_dim, ego->buddies, ego->nbuddies,
+		       vecsz, oop, dp);
+}
+
+static int applicable0(const solver *ego_, const problem *p_,
+		       const planner *plnr, int *dp)
+{
+     const S *ego = (const S *) ego_;
+     const problem_rdft *p = (const problem_rdft *) p_;
+
+     return (1
+	     && plnr->nthr > 1
+	     && FINITE_RNK(p->vecsz->rnk)
+	     && p->vecsz->rnk > 0
+	     && pickdim(ego, p->vecsz, p->I != p->O, dp)
+	  );
+}
+
+static int applicable(const solver *ego_, const problem *p_,
+		      const planner *plnr, int *dp)
+{
+     const S *ego = (const S *)ego_;
+
+     if (!applicable0(ego_, p_, plnr, dp)) return 0;
+
+     /* fftw2 behavior */
+     if (NO_VRANK_SPLITSP(plnr) && (ego->vecloop_dim != ego->buddies[0]))
+	  return 0;
+
+     return 1;
+}
+
+static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr)
+{
+     const S *ego = (const S *) ego_;
+     const problem_rdft *p;
+     P *pln;
+     problem *cldp;
+     int vdim;
+     iodim *d;
+     plan **cldrn = (plan **) 0;
+     int i, nthr;
+     INT its, ots, block_size;
+     tensor *vecsz;
+
+     static const plan_adt padt = {
+	  X(rdft_solve), awake, print, destroy
+     };
+
+     if (!applicable(ego_, p_, plnr, &vdim))
+          return (plan *) 0;
+     p = (const problem_rdft *) p_;
+
+     d = p->vecsz->dims + vdim;
+
+     block_size = (d->n + plnr->nthr - 1) / plnr->nthr;
+     nthr = (int)((d->n + block_size - 1) / block_size);
+     plnr->nthr = (plnr->nthr + nthr - 1) / nthr;
+     its = d->is * block_size;
+     ots = d->os * block_size;
+
+     cldrn = (plan **)MALLOC(sizeof(plan *) * nthr, PLANS);
+     for (i = 0; i < nthr; ++i) cldrn[i] = (plan *) 0;
+     
+     vecsz = X(tensor_copy)(p->vecsz);
+     for (i = 0; i < nthr; ++i) {
+	  vecsz->dims[vdim].n =
+	       (i == nthr - 1) ? (d->n - i*block_size) : block_size;
+	  cldp = X(mkproblem_rdft)(p->sz, vecsz,
+				   p->I + i*its, p->O + i*ots, p->kind);
+	  cldrn[i] = X(mkplan_d)(plnr, cldp);
+	  if (!cldrn[i]) goto nada;
+     }
+     X(tensor_destroy)(vecsz);
+
+     pln = MKPLAN_RDFT(P, &padt, apply);
+
+     pln->cldrn = cldrn;
+     pln->its = its;
+     pln->ots = ots;
+     pln->nthr = nthr;
+
+     pln->solver = ego;
+     X(ops_zero)(&pln->super.super.ops);
+     pln->super.super.pcost = 0;
+     for (i = 0; i < nthr; ++i) {
+	  X(ops_add2)(&cldrn[i]->ops, &pln->super.super.ops);
+	  pln->super.super.pcost += cldrn[i]->pcost;
+     }
+
+     return &(pln->super.super);
+
+ nada:
+     if (cldrn) {
+	  for (i = 0; i < nthr; ++i)
+	       X(plan_destroy_internal)(cldrn[i]);
+	  X(ifree)(cldrn);
+     }
+     X(tensor_destroy)(vecsz);
+     return (plan *) 0;
+}
+
+static solver *mksolver(int vecloop_dim, const int *buddies, size_t nbuddies)
+{
+     static const solver_adt sadt = { PROBLEM_RDFT, mkplan, 0 };
+     S *slv = MKSOLVER(S, &sadt);
+     slv->vecloop_dim = vecloop_dim;
+     slv->buddies = buddies;
+     slv->nbuddies = nbuddies;
+     return &(slv->super);
+}
+
+void X(rdft_thr_vrank_geq1_register)(planner *p)
+{
+     size_t i;
+
+     /* FIXME: Should we try other vecloop_dim values? */
+     static const int buddies[] = { 1, -1 };
+
+     for (i = 0; i < NELEM(buddies); ++i)
+          REGISTER_SOLVER(p, mksolver(buddies[i], buddies, NELEM(buddies)));
+}

fftw-3.3.10/threads/threads.c

@@ -0,0 +1,501 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+/* threads.c: Portable thread spawning for loops, via the X(spawn_loop)
+   function.  The first portion of this file is a set of macros to
+   spawn and join threads on various systems. */
+
+#include "threads/threads.h"
+#include "api/api.h"
+
+#if defined(USING_POSIX_THREADS)
+
+#include <pthread.h>
+
+#ifdef HAVE_UNISTD_H
+#  include <unistd.h>
+#endif
+
+/* implementation of semaphores and mutexes: */
+#if (defined(_POSIX_SEMAPHORES) && (_POSIX_SEMAPHORES >= 200112L))
+
+   /* If optional POSIX semaphores are supported, use them to
+      implement both semaphores and mutexes. */
+#  include <semaphore.h>
+#  include <errno.h>
+
+   typedef sem_t os_sem_t;
+
+   static void os_sem_init(os_sem_t *s) { sem_init(s, 0, 0); }
+   static void os_sem_destroy(os_sem_t *s) { sem_destroy(s); }
+
+   static void os_sem_down(os_sem_t *s)
+   {
+	int err;
+	do {
+	     err = sem_wait(s);
+	} while (err == -1 && errno == EINTR);
+	CK(err == 0);
+   }
+
+   static void os_sem_up(os_sem_t *s) { sem_post(s); }
+
+   /*
+      The reason why we use sem_t to implement mutexes is that I have
+      seen mysterious hangs with glibc-2.7 and linux-2.6.22 when using
+      pthread_mutex_t, but no hangs with sem_t or with linux >=
+      2.6.24.  For lack of better information, sem_t looks like the
+      safest choice.
+   */
+   typedef sem_t os_mutex_t;
+   static void os_mutex_init(os_mutex_t *s) { sem_init(s, 0, 1); }
+   #define os_mutex_destroy os_sem_destroy
+   #define os_mutex_lock os_sem_down
+   #define os_mutex_unlock os_sem_up
+
+#else
+
+   /* If optional POSIX semaphores are not defined, use pthread
+      mutexes for mutexes, and simulate semaphores with condition
+      variables */
+   typedef pthread_mutex_t os_mutex_t;
+
+   static void os_mutex_init(os_mutex_t *s)
+   {
+	pthread_mutex_init(s, (pthread_mutexattr_t *)0);
+   }
+
+   static void os_mutex_destroy(os_mutex_t *s) { pthread_mutex_destroy(s); }
+   static void os_mutex_lock(os_mutex_t *s) { pthread_mutex_lock(s); }
+   static void os_mutex_unlock(os_mutex_t *s) { pthread_mutex_unlock(s); }
+
+   typedef struct {
+	pthread_mutex_t m;
+	pthread_cond_t c;
+	volatile int x;
+   } os_sem_t;
+
+   static void os_sem_init(os_sem_t *s)
+   {
+	pthread_mutex_init(&s->m, (pthread_mutexattr_t *)0);
+	pthread_cond_init(&s->c, (pthread_condattr_t *)0);
+
+	/* wrap initialization in lock to exploit the release
+	   semantics of pthread_mutex_unlock() */
+	pthread_mutex_lock(&s->m);
+	s->x = 0;
+	pthread_mutex_unlock(&s->m);
+   }
+
+   static void os_sem_destroy(os_sem_t *s)
+   {
+	pthread_mutex_destroy(&s->m);
+	pthread_cond_destroy(&s->c);
+   }
+
+   static void os_sem_down(os_sem_t *s)
+   {
+	pthread_mutex_lock(&s->m);
+	while (s->x <= 0)
+	     pthread_cond_wait(&s->c, &s->m);
+	--s->x;
+	pthread_mutex_unlock(&s->m);
+   }
+
+   static void os_sem_up(os_sem_t *s)
+   {
+	pthread_mutex_lock(&s->m);
+	++s->x;
+	pthread_cond_signal(&s->c);
+	pthread_mutex_unlock(&s->m);
+   }
+
+#endif
+
+#define FFTW_WORKER void *
+
+static void os_create_thread(FFTW_WORKER (*worker)(void *arg),
+			     void *arg)
+{
+     pthread_attr_t attr;
+     pthread_t tid;
+
+     pthread_attr_init(&attr);
+     pthread_attr_setscope(&attr, PTHREAD_SCOPE_SYSTEM);
+     pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+     pthread_create(&tid, &attr, worker, (void *)arg);
+     pthread_attr_destroy(&attr);
+}
+
+static void os_destroy_thread(void)
+{
+     pthread_exit((void *)0);
+}
+
+/* support for static mutexes */
+typedef pthread_mutex_t os_static_mutex_t;
+#define OS_STATIC_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+static void os_static_mutex_lock(os_static_mutex_t *s) { pthread_mutex_lock(s); }
+static void os_static_mutex_unlock(os_static_mutex_t *s) { pthread_mutex_unlock(s); }
+
+#elif defined(__WIN32__) || defined(_WIN32) || defined(_WINDOWS)
+/* hack: windef.h defines INT for its own purposes and this causes
+   a conflict with our own INT in ifftw.h.  Divert the windows
+   definition into another name unlikely to cause a conflict */
+#define INT magnus_ab_INTegro_seclorum_nascitur_ordo
+#include <windows.h>
+#include <process.h>
+#include <intrin.h>
+#undef INT
+
+typedef HANDLE os_mutex_t;
+
+static void os_mutex_init(os_mutex_t *s)
+{
+     *s = CreateMutex(NULL, FALSE, NULL);
+}
+
+static void os_mutex_destroy(os_mutex_t *s)
+{
+     CloseHandle(*s);
+}
+
+static void os_mutex_lock(os_mutex_t *s)
+{
+     WaitForSingleObject(*s, INFINITE);
+}
+
+static void os_mutex_unlock(os_mutex_t *s)
+{
+     ReleaseMutex(*s);
+}
+
+typedef HANDLE os_sem_t;
+
+static void os_sem_init(os_sem_t *s)
+{
+     *s = CreateSemaphore(NULL, 0, 0x7FFFFFFFL, NULL);
+}
+
+static void os_sem_destroy(os_sem_t *s)
+{
+     CloseHandle(*s);
+}
+
+static void os_sem_down(os_sem_t *s)
+{
+     WaitForSingleObject(*s, INFINITE);
+}
+
+static void os_sem_up(os_sem_t *s)
+{
+     ReleaseSemaphore(*s, 1, NULL);
+}
+
+#define FFTW_WORKER unsigned __stdcall
+typedef unsigned (__stdcall *winthread_start) (void *);
+
+static void os_create_thread(winthread_start worker,
+			     void *arg)
+{
+     _beginthreadex((void *)NULL,               /* security attrib */
+		    0,				/* stack size */
+		    worker,                     /* start address */
+		    arg,			/* parameters */
+		    0,				/* creation flags */
+		    (unsigned *)NULL);		/* tid */
+}
+
+static void os_destroy_thread(void)
+{
+     _endthreadex(0);
+}
+
+/* windows does not have statically-initialized mutexes---fake a
+   spinlock */
+typedef volatile LONG os_static_mutex_t;
+#define OS_STATIC_MUTEX_INITIALIZER 0
+static void os_static_mutex_lock(os_static_mutex_t *s)
+{
+     while (InterlockedExchange(s, 1) == 1) {
+          YieldProcessor();
+          Sleep(0);
+     }
+}
+static void os_static_mutex_unlock(os_static_mutex_t *s)
+{
+     LONG old = InterlockedExchange(s, 0);
+     A(old == 1);
+}
+#else
+#error "No threading layer defined"
+#endif
+
+/************************************************************************/
+
+/* Main code: */
+struct worker {
+     os_sem_t ready;
+     os_sem_t done;
+     struct work *w;
+     struct worker *cdr;
+};
+
+static struct worker *make_worker(void)
+{
+     struct worker *q = (struct worker *)MALLOC(sizeof(*q), OTHER);
+     os_sem_init(&q->ready);
+     os_sem_init(&q->done);
+     return q;
+}
+
+static void unmake_worker(struct worker *q)
+{
+     os_sem_destroy(&q->done);
+     os_sem_destroy(&q->ready);
+     X(ifree)(q);
+}
+
+struct work {
+     spawn_function proc;
+     spawn_data d;
+     struct worker *q; /* the worker responsible for performing this work */
+};
+
+static os_mutex_t queue_lock;
+static os_sem_t termination_semaphore;
+
+static struct worker *worker_queue;
+#define WITH_QUEUE_LOCK(what)			\
+{						\
+     os_mutex_lock(&queue_lock);		\
+     what;					\
+     os_mutex_unlock(&queue_lock);		\
+}
+
+static FFTW_WORKER worker(void *arg)
+{
+     struct worker *ego = (struct worker *)arg;
+     struct work *w;
+
+     for (;;) {
+	  /* wait until work becomes available */
+	  os_sem_down(&ego->ready);
+
+	  w = ego->w;
+
+	  /* !w->proc ==> terminate worker */
+	  if (!w->proc) break;
+
+	  /* do the work */
+          w->proc(&w->d);
+
+	  /* signal that work is done */
+	  os_sem_up(&ego->done);
+     }
+
+     /* termination protocol */
+     os_sem_up(&termination_semaphore);
+
+     os_destroy_thread();
+     /* UNREACHABLE */
+     return 0;
+}
+
+static void enqueue(struct worker *q)
+{
+     WITH_QUEUE_LOCK({
+	  q->cdr = worker_queue;
+	  worker_queue = q;
+     });
+}
+
+static struct worker *dequeue(void)
+{
+     struct worker *q;
+
+     WITH_QUEUE_LOCK({
+	  q = worker_queue;
+	  if (q)
+	       worker_queue = q->cdr;
+     });
+
+     if (!q) {
+	  /* no worker is available.  Create one */
+	  q = make_worker();
+	  os_create_thread(worker, q);
+     }
+
+     return q;
+}
+
+
+static void kill_workforce(void)
+{
+     struct work w;
+
+     w.proc = 0;
+
+     WITH_QUEUE_LOCK({
+	  /* tell all workers that they must terminate.
+
+	     Because workers enqueue themselves before signaling the
+	     completion of the work, all workers belong to the worker queue
+	     if we get here.  Also, all workers are waiting at
+	     os_sem_down(ready), so we can hold the queue lock without
+	     deadlocking */
+	  while (worker_queue) {
+	       struct worker *q = worker_queue;
+	       worker_queue = q->cdr;
+	       q->w = &w;
+	       os_sem_up(&q->ready);
+	       os_sem_down(&termination_semaphore);
+	       unmake_worker(q);
+	  }
+     });
+}
+
+static os_static_mutex_t initialization_mutex = OS_STATIC_MUTEX_INITIALIZER;
+
+int X(ithreads_init)(void)
+{
+     os_static_mutex_lock(&initialization_mutex); {
+          os_mutex_init(&queue_lock);
+          os_sem_init(&termination_semaphore);
+
+          WITH_QUEUE_LOCK({
+               worker_queue = 0;
+          });
+     } os_static_mutex_unlock(&initialization_mutex);
+
+     return 0; /* no error */
+}
+
+/* Distribute a loop from 0 to loopmax-1 over nthreads threads.
+   proc(d) is called to execute a block of iterations from d->min
+   to d->max-1.  d->thr_num indicate the number of the thread
+   that is executing proc (from 0 to nthreads-1), and d->data is
+   the same as the data parameter passed to X(spawn_loop).
+
+   This function returns only after all the threads have completed. */
+void X(spawn_loop)(int loopmax, int nthr, spawn_function proc, void *data)
+{
+     int block_size;
+     int i;
+
+     A(loopmax >= 0);
+     A(nthr > 0);
+     A(proc);
+
+     if (!loopmax) return;
+
+     /* Choose the block size and number of threads in order to (1)
+        minimize the critical path and (2) use the fewest threads that
+        achieve the same critical path (to minimize overhead).
+        e.g. if loopmax is 5 and nthr is 4, we should use only 3
+        threads with block sizes of 2, 2, and 1. */
+     block_size = (loopmax + nthr - 1) / nthr;
+     nthr = (loopmax + block_size - 1) / block_size;
+
+     if (X(spawnloop_callback)) { /* user-defined spawnloop backend */
+          spawn_data *sdata;
+          STACK_MALLOC(spawn_data *, sdata, sizeof(spawn_data) * nthr);
+          for (i = 0; i < nthr; ++i) {
+               spawn_data *d = &sdata[i];
+               d->max = (d->min = i * block_size) + block_size;
+               if (d->max > loopmax)
+                    d->max = loopmax;
+               d->thr_num = i;
+               d->data = data;
+          }
+          X(spawnloop_callback)(proc, sdata, sizeof(spawn_data), nthr, X(spawnloop_callback_data));
+          STACK_FREE(sdata);
+     }
+     else {
+          struct work *r;
+          STACK_MALLOC(struct work *, r, sizeof(struct work) * nthr);
+
+          /* distribute work: */
+          for (i = 0; i < nthr; ++i) {
+               struct work *w = &r[i];
+               spawn_data *d = &w->d;
+
+               d->max = (d->min = i * block_size) + block_size;
+               if (d->max > loopmax)
+                    d->max = loopmax;
+               d->thr_num = i;
+               d->data = data;
+               w->proc = proc;
+
+               if (i == nthr - 1) {
+                    /* do the work ourselves */
+                    proc(d);
+               } else {
+                    /* assign a worker to W */
+                    w->q = dequeue();
+
+                    /* tell worker w->q to do it */
+                    w->q->w = w; /* Dirac could have written this */
+                    os_sem_up(&w->q->ready);
+               }
+          }
+
+          for (i = 0; i < nthr - 1; ++i) {
+               struct work *w = &r[i];
+               os_sem_down(&w->q->done);
+               enqueue(w->q);
+          }
+
+          STACK_FREE(r);
+     }
+}
+
+void X(threads_cleanup)(void)
+{
+     kill_workforce();
+     os_mutex_destroy(&queue_lock);
+     os_sem_destroy(&termination_semaphore);
+}
+
+static os_static_mutex_t install_planner_hooks_mutex = OS_STATIC_MUTEX_INITIALIZER;
+static os_mutex_t planner_mutex;
+static int planner_hooks_installed = 0;
+
+static void lock_planner_mutex(void)
+{
+     os_mutex_lock(&planner_mutex);
+}
+
+static void unlock_planner_mutex(void)
+{
+     os_mutex_unlock(&planner_mutex);
+}
+
+void X(threads_register_planner_hooks)(void)
+{
+     os_static_mutex_lock(&install_planner_hooks_mutex); {
+          if (!planner_hooks_installed) {
+               os_mutex_init(&planner_mutex);
+               X(set_planner_hooks)(lock_planner_mutex, unlock_planner_mutex);
+               planner_hooks_installed = 1;
+          }
+     } os_static_mutex_unlock(&install_planner_hooks_mutex);
+}

fftw-3.3.10/threads/threads.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __THREADS_H__
+#define __THREADS_H__
+
+#include "kernel/ifftw.h"
+#include "dft/ct.h"
+#include "rdft/hc2hc.h"
+
+typedef struct {
+     int min, max, thr_num;
+     void *data;
+} spawn_data;
+
+typedef void *(*spawn_function) (spawn_data *);
+
+void X(spawn_loop)(int loopmax, int nthreads,
+		   spawn_function proc, void *data);
+int X(ithreads_init)(void);
+void X(threads_cleanup)(void);
+
+typedef void (*spawnloop_function)(spawn_function, spawn_data *, size_t, int, void *);
+extern spawnloop_function X(spawnloop_callback);
+extern void *X(spawnloop_callback_data);
+
+/* configurations */
+
+void X(dft_thr_vrank_geq1_register)(planner *p);
+void X(rdft_thr_vrank_geq1_register)(planner *p);
+void X(rdft2_thr_vrank_geq1_register)(planner *p);
+
+ct_solver *X(mksolver_ct_threads)(size_t size, INT r, int dec,
+				  ct_mkinferior mkcldw,
+				  ct_force_vrecursion force_vrecursionp);
+hc2hc_solver *X(mksolver_hc2hc_threads)(size_t size, INT r, hc2hc_mkinferior mkcldw);
+
+void X(threads_conf_standard)(planner *p);
+void X(threads_register_hooks)(void);
+void X(threads_unregister_hooks)(void);
+void X(threads_register_planner_hooks)(void);
+
+#endif /* __THREADS_H__ */

fftw-3.3.10/threads/vrank-geq1-rdft2.c

@@ -0,0 +1,233 @@
+/*
+ * Copyright (c) 2003, 2007-14 Matteo Frigo
+ * Copyright (c) 2003, 2007-14 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+
+
+#include "threads/threads.h"
+
+typedef struct {
+     solver super;
+     int vecloop_dim;
+     const int *buddies;
+     size_t nbuddies;
+} S;
+
+typedef struct {
+     plan_rdft2 super;
+
+     plan **cldrn;
+     INT its, ots;
+     int nthr;
+     const S *solver;
+} P;
+
+typedef struct {
+     INT its, ots;
+     R *r0, *r1, *cr, *ci;
+     plan **cldrn;
+} PD;
+
+static void *spawn_apply(spawn_data *d)
+{
+     PD *ego = (PD *) d->data;
+     INT its = ego->its;
+     INT ots = ego->ots;
+     int thr_num = d->thr_num;
+     plan_rdft2 *cld = (plan_rdft2 *) ego->cldrn[d->thr_num];
+
+     cld->apply((plan *) cld,
+		ego->r0 + thr_num * its, ego->r1 + thr_num * its,
+		ego->cr + thr_num * ots, ego->ci + thr_num * ots);
+     return 0;
+}
+
+static void apply(const plan *ego_, R *r0, R *r1, R *cr, R *ci)
+{
+     const P *ego = (const P *) ego_;
+     PD d;
+
+     d.its = ego->its;
+     d.ots = ego->ots;
+     d.cldrn = ego->cldrn;
+     d.r0 = r0; d.r1 = r1; d.cr = cr; d.ci = ci;
+
+     X(spawn_loop)(ego->nthr, ego->nthr, spawn_apply, (void*) &d);
+}
+
+static void awake(plan *ego_, enum wakefulness wakefulness)
+{
+     P *ego = (P *) ego_;
+     int i;
+     for (i = 0; i < ego->nthr; ++i)
+	  X(plan_awake)(ego->cldrn[i], wakefulness);
+}
+
+static void destroy(plan *ego_)
+{
+     P *ego = (P *) ego_;
+     int i;
+     for (i = 0; i < ego->nthr; ++i)
+	  X(plan_destroy_internal)(ego->cldrn[i]);
+     X(ifree)(ego->cldrn);
+}
+
+static void print(const plan *ego_, printer *p)
+{
+     const P *ego = (const P *) ego_;
+     const S *s = ego->solver;
+     int i;
+     p->print(p, "(rdft2-thr-vrank>=1-x%d/%d)", ego->nthr, s->vecloop_dim);
+     for (i = 0; i < ego->nthr; ++i)
+	  if (i == 0 || (ego->cldrn[i] != ego->cldrn[i-1] &&
+			 (i <= 1 || ego->cldrn[i] != ego->cldrn[i-2])))
+	       p->print(p, "%(%p%)", ego->cldrn[i]);
+     p->putchr(p, ')');
+}
+
+static int pickdim(const S *ego, const tensor *vecsz, int oop, int *dp)
+{
+     return X(pickdim)(ego->vecloop_dim, ego->buddies, ego->nbuddies,
+		       vecsz, oop, dp);
+}
+
+static int applicable0(const solver *ego_, const problem *p_,
+		       const planner *plnr, int *dp)
+{
+     const S *ego = (const S *) ego_;
+     const problem_rdft2 *p = (const problem_rdft2 *) p_;
+
+     if (FINITE_RNK(p->vecsz->rnk)
+	 && p->vecsz->rnk > 0
+	 && plnr->nthr > 1
+	 && pickdim(ego, p->vecsz, p->r0 != p->cr, dp)) {
+	  if (p->r0 != p->cr)
+	       return 1;  /* can always operate out-of-place */
+
+	  return(X(rdft2_inplace_strides)(p, *dp));
+     }
+
+     return 0;
+}
+
+static int applicable(const solver *ego_, const problem *p_,
+		      const planner *plnr, int *dp)
+{
+     const S *ego = (const S *)ego_;
+
+     if (!applicable0(ego_, p_, plnr, dp)) return 0;
+
+     /* fftw2 behavior */
+     if (NO_VRANK_SPLITSP(plnr) && (ego->vecloop_dim != ego->buddies[0]))
+	  return 0;
+
+     return 1;
+}
+
+static plan *mkplan(const solver *ego_, const problem *p_, planner *plnr)
+{
+     const S *ego = (const S *) ego_;
+     const problem_rdft2 *p;
+     P *pln;
+     problem *cldp;
+     int vdim;
+     iodim *d;
+     plan **cldrn = (plan **) 0;
+     int i, nthr;
+     INT its, ots, block_size;
+     tensor *vecsz;
+
+     static const plan_adt padt = {
+	  X(rdft2_solve), awake, print, destroy
+     };
+
+     if (!applicable(ego_, p_, plnr, &vdim))
+          return (plan *) 0;
+     p = (const problem_rdft2 *) p_;
+
+     d = p->vecsz->dims + vdim;
+
+     block_size = (d->n + plnr->nthr - 1) / plnr->nthr;
+     nthr = (int)((d->n + block_size - 1) / block_size);
+     plnr->nthr = (plnr->nthr + nthr - 1) / nthr;
+     X(rdft2_strides)(p->kind, d, &its, &ots);
+     its *= block_size; ots *= block_size;
+
+     cldrn = (plan **)MALLOC(sizeof(plan *) * nthr, PLANS);
+     for (i = 0; i < nthr; ++i) cldrn[i] = (plan *) 0;
+     
+     vecsz = X(tensor_copy)(p->vecsz);
+     for (i = 0; i < nthr; ++i) {
+	  vecsz->dims[vdim].n =
+	       (i == nthr - 1) ? (d->n - i*block_size) : block_size;
+	  cldp = X(mkproblem_rdft2)(p->sz, vecsz,
+				    p->r0 + i*its, p->r1 + i*its,
+				    p->cr + i*ots, p->ci + i*ots, 
+				    p->kind);
+	  cldrn[i] = X(mkplan_d)(plnr, cldp);
+	  if (!cldrn[i]) goto nada;
+     }
+     X(tensor_destroy)(vecsz);
+
+     pln = MKPLAN_RDFT2(P, &padt, apply);
+
+     pln->cldrn = cldrn;
+     pln->its = its;
+     pln->ots = ots;
+     pln->nthr = nthr;
+
+     pln->solver = ego;
+     X(ops_zero)(&pln->super.super.ops);
+     pln->super.super.pcost = 0;
+     for (i = 0; i < nthr; ++i) {
+	  X(ops_add2)(&cldrn[i]->ops, &pln->super.super.ops);
+	  pln->super.super.pcost += cldrn[i]->pcost;
+     }
+
+     return &(pln->super.super);
+
+ nada:
+     if (cldrn) {
+	  for (i = 0; i < nthr; ++i)
+	       X(plan_destroy_internal)(cldrn[i]);
+	  X(ifree)(cldrn);
+     }
+     X(tensor_destroy)(vecsz);
+     return (plan *) 0;
+}
+
+static solver *mksolver(int vecloop_dim, const int *buddies, size_t nbuddies)
+{
+     static const solver_adt sadt = { PROBLEM_RDFT2, mkplan, 0 };
+     S *slv = MKSOLVER(S, &sadt);
+     slv->vecloop_dim = vecloop_dim;
+     slv->buddies = buddies;
+     slv->nbuddies = nbuddies;
+     return &(slv->super);
+}
+
+void X(rdft2_thr_vrank_geq1_register)(planner *p)
+{
+     /* FIXME: Should we try other vecloop_dim values? */
+     static const int buddies[] = { 1, -1 };
+     size_t i;
+
+     for (i = 0; i < NELEM(buddies); ++i)
+          REGISTER_SOLVER(p, mksolver(buddies[i], buddies, NELEM(buddies)));
+}