cleanup, simplify hungarian algorithm implementation

[libfirm] / ir / adt / array.c

diff --git a/ir/adt/array.c b/ir/adt/array.c
index f64e58c..75ce38b 100644 (file)
--- a/ir/adt/array.c
+++ b/ir/adt/array.c
@@ -24,15 +24,11 @@
  * @version     $Id$
  */
 
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include "config.h"
 
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
+#include <stdlib.h>
 
-#include "array.h"
+#include "array_t.h"
 #include "xmalloc.h"
 
 /* Undefine the macros to get the functions instead, cf tmalloc.c.  */
@@ -51,11 +47,22 @@
 /**
  * An empty dynamic array descriptor.
  */
-_arr_descr arr_mt_descr
+ir_arr_descr arr_mt_descr = { ARR_D_MAGIC, 0, {0}, 0, {{{0}}} };
+
+void ir_verify_arr(const void *arr)
+{
 #ifndef NDEBUG
-       = { ARR_D_MAGIC, 0, {0}, 0, {{{0}}} }
+       ir_arr_descr *descr = ARR_DESCR(arr);
+       assert(descr->magic == ARR_D_MAGIC || descr->magic == ARR_A_MAGIC
+                        || descr->magic == ARR_F_MAGIC);
+       if (descr->magic == ARR_F_MAGIC) {
+               assert(descr->u.allocated >= descr->nelts);
+       }
+       assert(descr->nelts >= 0);
+#else
+       (void) arr;
 #endif
-;
+}
 
 /**
  * Creates a dynamic array on a obstack.
@@ -69,13 +76,14 @@ _arr_descr arr_mt_descr
  *
  * @remark Helper function, use NEW_ARR_D() instead.
  */
-void *_new_arr_d(struct obstack *obstack, int nelts, size_t elts_size) {
-       _arr_descr *dp;
+void *ir_new_arr_d(struct obstack *obstack, int nelts, size_t elts_size)
+{
+       ir_arr_descr *dp;
 
        assert(obstack && (nelts >= 0));
 
-       dp = obstack_alloc(obstack, _ARR_ELTS_OFFS + elts_size);
-       _ARR_SET_DBGINF(dp, ARR_D_MAGIC, elts_size/nelts);
+       dp = obstack_alloc(obstack, ARR_ELTS_OFFS + elts_size);
+       ARR_SET_DBGINF(dp, ARR_D_MAGIC, elts_size/nelts);
        dp->u.obstack = obstack;
        dp->nelts = nelts;
        return dp->v.elts;
@@ -92,12 +100,13 @@ void *_new_arr_d(struct obstack *obstack, int nelts, size_t elts_size) {
  *
  * @remark Helper function, use NEW_ARR_F() instead.
  */
-void *_new_arr_f(int nelts, size_t elts_size) {
-       _arr_descr *new;
+void *ir_new_arr_f(int nelts, size_t elts_size)
+{
+       ir_arr_descr *new;
 
        assert (nelts >= 0);
-       new = xmalloc (_ARR_ELTS_OFFS+elts_size);
-       _ARR_SET_DBGINF (new, ARR_F_MAGIC, nelts ? elts_size/nelts : 0);
+       new = xmalloc (ARR_ELTS_OFFS+elts_size);
+       ARR_SET_DBGINF (new, ARR_F_MAGIC, nelts ? elts_size/nelts : 0);
        new->u.allocated = new->nelts = nelts;
        return new->v.elts;
 }
@@ -109,15 +118,16 @@ void *_new_arr_f(int nelts, size_t elts_size) {
  *
  * @remark Helper function, use DEL_ARR_F() instead.
  */
-void _del_arr_f(void *elts) {
-       _arr_descr *dp = _ARR_DESCR (elts);
+void ir_del_arr_f(void *elts)
+{
+       ir_arr_descr *dp = ARR_DESCR (elts);
 
        ARR_VRFY (elts);
        assert (dp->magic == ARR_F_MAGIC);
 
 #ifndef NDEBUG
        {
-               _arr_descr *wdp = (_arr_descr *)dp;
+               ir_arr_descr *wdp = (ir_arr_descr *)dp;
                wdp->magic = 0xdeadbeef;
        }
 #endif
@@ -136,14 +146,15 @@ void _del_arr_f(void *elts) {
  *
  * @remark Helper function, use ARR_SETLEN() instead.
  */
-void *_arr_setlen (void *elts, int nelts, size_t elts_size) {
-       _arr_descr *dp = _ARR_DESCR (elts);
+void *ir_arr_setlen (void *elts, int nelts, size_t elts_size)
+{
+       ir_arr_descr *dp = ARR_DESCR (elts);
 
        assert ((dp->magic == ARR_F_MAGIC) && (nelts >= 0));
        ARR_VRFY (elts);
        assert (!dp->eltsize || !nelts || (dp->eltsize == elts_size/nelts));
 
-       dp = xrealloc (dp, _ARR_ELTS_OFFS+elts_size);
+       dp = xrealloc (dp, ARR_ELTS_OFFS+elts_size);
        dp->u.allocated = dp->nelts = nelts;
 
        return dp->v.elts;
@@ -162,8 +173,9 @@ void *_arr_setlen (void *elts, int nelts, size_t elts_size) {
  *
  * @remark Helper function, use ARR_RESIZE() instead.
  */
-void *_arr_resize(void *elts, int nelts, size_t eltsize) {
-       _arr_descr *dp = _ARR_DESCR(elts);
+void *ir_arr_resize(void *elts, int nelts, size_t eltsize)
+{
+       ir_arr_descr *dp = ARR_DESCR(elts);
        int n;
 
        assert((dp->magic == ARR_F_MAGIC) && (nelts >= 0));
@@ -177,7 +189,7 @@ void *_arr_resize(void *elts, int nelts, size_t eltsize) {
        assert(n >= nelts);
 
        if (n != dp->u.allocated) {
-               dp = xrealloc(dp, _ARR_ELTS_OFFS+eltsize*n);
+               dp = xrealloc(dp, ARR_ELTS_OFFS+eltsize*n);
                dp->u.allocated = n;
 #if defined(DEBUG) && defined(HAVE_GNU_MALLOC)
        } else {
@@ -195,7 +207,9 @@ void *_arr_resize(void *elts, int nelts, size_t eltsize) {
  * Do NOT use is in code, use ARR_LEN() macro!
  * This function is intended to be called from a debugger.
  */
-int array_len(const void *arr) {
+int array_len(const void *arr);
+int array_len(const void *arr)
+{
        return ARR_LEN(arr);
 }
 
@@ -204,9 +218,11 @@ int array_len(const void *arr) {
  * Do NOT use is in code!.
  * This function is intended to be called from a debugger.
  */
-_arr_descr *array_descr(const void *arr) {
+ir_arr_descr *array_descr(const void *arr);
+ir_arr_descr *array_descr(const void *arr)
+{
        if (! arr)
                return NULL;
-       return _ARR_DESCR(arr);
+       return ARR_DESCR(arr);
 }
 #endif /* DEBUG_libfirm */