From d76687285a032e25cbd258035321cb8d6d8e0330 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Fri, 25 Jan 2019 16:16:17 +0100
Subject: mg2d: factor out the boundary condition-related API

---
 mg2d.c | 31 +++++++++++--------------------
 1 file changed, 11 insertions(+), 20 deletions(-)

(limited to 'mg2d.c')

diff --git a/mg2d.c b/mg2d.c
index af33450..3406030 100644
--- a/mg2d.c
+++ b/mg2d.c
@@ -30,6 +30,8 @@
 #include "ell_relax.h"
 #include "log.h"
 #include "mg2d.h"
+#include "mg2d_boundary.h"
+#include "mg2d_boundary_internal.h"
 #include "mg2d_constants.h"
 
 #define LEVELS_MAX 16
@@ -64,8 +66,6 @@ struct MG2DInternal {
 
     int64_t time_solve;
     int64_t count_solve;
-
-    double *boundaries_base[4];
 };
 
 static void log_callback(MG2DLogger *log, int level, const char *fmt, va_list vl)
@@ -374,7 +374,7 @@ finish:
     return 0;
 }
 
-static void bnd_zero(EllRelaxBoundary *bdst, size_t nb_rows, size_t domain_size)
+static void bnd_zero(MG2DBoundary *bdst, size_t nb_rows, size_t domain_size)
 {
     for (size_t i = 0; i < nb_rows; i++) {
         memset(bdst->val + i * bdst->val_stride - i, 0,
@@ -382,7 +382,7 @@ static void bnd_zero(EllRelaxBoundary *bdst, size_t nb_rows, size_t domain_size)
     }
 }
 
-static void bnd_copy(EllRelaxBoundary *bdst, const double *src, ptrdiff_t src_stride,
+static void bnd_copy(MG2DBoundary *bdst, const double *src, ptrdiff_t src_stride,
                      size_t nb_rows, size_t domain_size)
 {
     for (size_t i = 0; i < nb_rows; i++) {
@@ -431,7 +431,7 @@ static int mg_levels_init(MG2DContext *ctx)
 
         for (int i = 0; i < ARRAY_ELEMS(cur->solver->boundaries); i++) {
             MG2DBoundary *bsrc = ctx->boundaries[i];
-            EllRelaxBoundary *bdst = &cur->solver->boundaries[i];
+            MG2DBoundary *bdst = cur->solver->boundaries[i];
             bdst->type = bsrc->type;
             switch (bsrc->type) {
             case MG2D_BC_TYPE_FIXVAL:
@@ -647,18 +647,11 @@ MG2DContext *mg2d_solver_alloc(size_t domain_size)
     priv->cpuflags      = mg2di_cpu_flags_get();
 
     for (int i = 0; i < ARRAY_ELEMS(ctx->boundaries); i++) {
-        const size_t boundary_len_max = domain_size + 2 * (FD_STENCIL_MAX - 1);
-
-        ctx->boundaries[i] = calloc(1, sizeof(*ctx->boundaries[i]));
-        if (!ctx->boundaries[i])
-            goto fail;
-
-        ret = posix_memalign((void**)&priv->boundaries_base[i], 32,
-                             sizeof(*ctx->boundaries[i]->val) * boundary_len_max * FD_STENCIL_MAX);
-        if (ret != 0)
+        ctx->boundaries[i] = mg2di_bc_alloc(domain_size);
+        if (!ctx->boundaries[i]) {
+            ret = -ENOMEM;
             goto fail;
-        ctx->boundaries[i]->val        = priv->boundaries_base[i] + FD_STENCIL_MAX - 1;
-        ctx->boundaries[i]->val_stride = boundary_len_max;
+        }
     }
 
     ret = mg_levels_alloc(ctx, domain_size);
@@ -707,10 +700,8 @@ void mg2d_solver_free(MG2DContext **pctx)
         ctx->priv->root = next;
     }
 
-    for (int i = 0; i < ARRAY_ELEMS(ctx->boundaries); i++) {
-        free(ctx->priv->boundaries_base[i]);
-        free(ctx->boundaries[i]);
-    }
+    for (int i = 0; i < ARRAY_ELEMS(ctx->boundaries); i++)
+        mg2di_bc_free(&ctx->boundaries[i]);
 
     tp_free(&ctx->priv->tp);
     free(ctx->priv);
-- 
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