From: Nicholas Nethercote <njn@valgrind.org>
Date: Tue, 30 Sep 2003 15:35:13 +0000 (+0000)
Subject: Removed sort_hash_array().  Changed VG_(HT_to_sorted_array)() to
X-Git-Tag: svn/VALGRIND_2_1_0~161
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ef2eff1717353139bf07e7a1aa7353eb17a67143;p=thirdparty%2Fvalgrind.git

Removed sort_hash_array().  Changed VG_(HT_to_sorted_array)() to
VG_(HT_to_array)().  Leak checker now sorts the given array itself, using
VG_(ssort)().


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1872
---

diff --git a/coregrind/vg_hashtable.c b/coregrind/vg_hashtable.c
index 3dfefaae62..57def383f5 100644
--- a/coregrind/vg_hashtable.c
+++ b/coregrind/vg_hashtable.c
@@ -100,45 +100,11 @@ VgHashNode* VG_(HT_get_node) ( VgHashTable table, UInt key,
    return curr;
 }
 
-static
-void sort_hash_array ( VgHashNode** shadows, UInt n_shadows )
-{
-   Int   incs[14] = { 1, 4, 13, 40, 121, 364, 1093, 3280,
-                      9841, 29524, 88573, 265720,
-                      797161, 2391484 };
-   Int          lo = 0;
-   Int          hi = n_shadows-1;
-   Int          i, j, h, bigN, hp;
-   VgHashNode* v;
-
-   bigN = hi - lo + 1; if (bigN < 2) return;
-   hp = 0; while (hp < 14 && incs[hp] < bigN) hp++; hp--;
-   vg_assert(0 <= hp && hp < 14);
-
-   for (; hp >= 0; hp--) {
-      h = incs[hp];
-      i = lo + h;
-      while (1) {
-         if (i > hi) break;
-         v = shadows[i];
-         j = i;
-         while (shadows[j-h]->key > v->key) {
-            shadows[j] = shadows[j-h];
-            j = j - h;
-            if (j <= (lo + h - 1)) break;
-         }
-         shadows[j] = v;
-         i++;
-      }
-   }
-}
-
 /* Allocates a suitably-sized array, copies all the malloc'd block
-   shadows into it, sorts it by the `key' field, then returns both the array
-   and the size of it.  This is used by the memory-leak detector.
+   shadows into it, then returns both the array and the size of it.  This is
+   used by the memory-leak detector.
 */
-VgHashNode** VG_(HT_to_sorted_array) ( VgHashTable table, 
-                                       /*OUT*/ UInt* n_shadows )
+VgHashNode** VG_(HT_to_array) ( VgHashTable table, /*OUT*/ UInt* n_shadows )
 {
    UInt       i, j;
    VgHashNode** arr;
@@ -163,13 +129,6 @@ VgHashNode** VG_(HT_to_sorted_array) ( VgHashTable table,
    }
    vg_assert(j == *n_shadows);
 
-   sort_hash_array(arr, *n_shadows);
-
-   /* Sanity check; assert that the blocks are now in order */
-   for (i = 0; i < *n_shadows-1; i++) {
-      vg_assert( arr[i]->key < arr[i+1]->key );
-   }
-
    return arr;
 }
 
diff --git a/include/vg_skin.h b/include/vg_skin.h
index fcca0326ca..7ddb499038 100644
--- a/include/vg_skin.h
+++ b/include/vg_skin.h
@@ -1498,10 +1498,9 @@ extern void VG_(HT_add_node) ( VgHashTable t, VgHashNode* node );
 extern VgHashNode* VG_(HT_get_node) ( VgHashTable t, UInt key,
                                     /*OUT*/VgHashNode*** next_ptr );
 
-/* Allocates a sorted array of pointers to all the shadow chunks of malloc'd
-   blocks. */
-extern VgHashNode** VG_(HT_to_sorted_array) ( VgHashTable t,
-                                              /*OUT*/ UInt* n_shadows );
+/* Allocates an array of pointers to all the shadow chunks of malloc'd
+   blocks.  Must be freed with VG_(free)(). */
+extern VgHashNode** VG_(HT_to_array) ( VgHashTable t, /*OUT*/ UInt* n_shadows );
 
 /* Returns first node that matches predicate `p', or NULL if none do.
    Extra arguments can be implicitly passed to `p' using nested functions;
diff --git a/memcheck/mac_leakcheck.c b/memcheck/mac_leakcheck.c
index b7af264c6e..a9b5ad2249 100644
--- a/memcheck/mac_leakcheck.c
+++ b/memcheck/mac_leakcheck.c
@@ -361,6 +361,13 @@ Int MAC_(bytes_dubious)    = 0;
 Int MAC_(bytes_reachable)  = 0;
 Int MAC_(bytes_suppressed) = 0;
 
+static Int lc_compar(void* n1, void* n2)
+{
+   MAC_Chunk* mc1 = *(MAC_Chunk**)n1;
+   MAC_Chunk* mc2 = *(MAC_Chunk**)n2;
+   return (mc1->data < mc2->data ? -1 : 1);
+}
+
 /* Top level entry point to leak detector.  Call here, passing in
    suitable address-validating functions (see comment at top of
    vg_scan_all_valid_memory above).  All this is to avoid duplication
@@ -387,9 +394,17 @@ void MAC_(do_detect_memory_leaks) (
    LossRecord* errlist;
    LossRecord* p;
 
-   /* VG_(HashTable_to_array) allocates storage for shadows */
-   lc_shadows = (MAC_Chunk**)VG_(HT_to_sorted_array)( MAC_(malloc_list),
-                                                        &lc_n_shadows );
+   /* VG_(HT_to_array) allocates storage for shadows */
+   lc_shadows = (MAC_Chunk**)VG_(HT_to_array)( MAC_(malloc_list),
+                                               &lc_n_shadows );
+
+   /* Sort the array. */
+   VG_(ssort)((void*)lc_shadows, lc_n_shadows, sizeof(VgHashNode*), lc_compar);
+
+   /* Sanity check; assert that the blocks are now in order */
+   for (i = 0; i < lc_n_shadows-1; i++) {
+      sk_assert( lc_shadows[i]->data <= lc_shadows[i+1]->data);
+   }
 
    /* Sanity check -- make sure they don't overlap */
    for (i = 0; i < lc_n_shadows-1; i++) {