From 24e19ef4fab155b4d15c5ec9d34852a2afc743d3 Mon Sep 17 00:00:00 2001
From: Graham Leggett <minfrin@apache.org>
Date: Tue, 19 Jan 2010 22:20:46 +0000
Subject: Revert r817806.

git-svn-id: https://svn.apache.org/repos/asf/apr/apr/trunk@900981 13f79535-47bb-0310-9956-ffa450edef68
---
 tables/apr_hash.c | 42 ++++++++----------------------------------
 1 file changed, 8 insertions(+), 34 deletions(-)

(limited to 'tables')

diff --git a/tables/apr_hash.c b/tables/apr_hash.c
index b2990ba64..05ee42f46 100644
--- a/tables/apr_hash.c
+++ b/tables/apr_hash.c
@@ -67,15 +67,12 @@ struct apr_hash_index_t {
 /*
  * The size of the array is always a power of two. We use the maximum
  * index rather than the size so that we can use bitwise-AND for
- * modular arithmetic. The count of hash entries may be greater
- * depending on the chosen collision rate.
- *
- * We allocate the bucket array in a sub-pool, "array_pool". This allows us
- * to reclaim the old bucket array after an expansion.
+ * modular arithmetic.
+ * The count of hash entries may be greater depending on the chosen
+ * collision rate.
  */
 struct apr_hash_t {
     apr_pool_t          *pool;
-    apr_pool_t          *array_pool;
     apr_hash_entry_t   **array;
     apr_hash_index_t     iterator;  /* For apr_hash_first(NULL, ...) */
     unsigned int         count, max;
@@ -92,20 +89,14 @@ struct apr_hash_t {
 
 static apr_hash_entry_t **alloc_array(apr_hash_t *ht, unsigned int max)
 {
-   return apr_pcalloc(ht->array_pool, sizeof(*ht->array) * (max + 1));
+   return apr_pcalloc(ht->pool, sizeof(*ht->array) * (max + 1));
 }
 
 APR_DECLARE(apr_hash_t *) apr_hash_make(apr_pool_t *pool)
 {
-    apr_pool_t *array_pool;
     apr_hash_t *ht;
-
-    if (apr_pool_create(&array_pool, pool) != APR_SUCCESS)
-        return NULL;
-
     ht = apr_palloc(pool, sizeof(apr_hash_t));
     ht->pool = pool;
-    ht->array_pool = array_pool;
     ht->free = NULL;
     ht->count = 0;
     ht->max = INITIAL_MAX;
@@ -172,17 +163,10 @@ APR_DECLARE(void) apr_hash_this(apr_hash_index_t *hi,
 
 static void expand_array(apr_hash_t *ht)
 {
-    apr_pool_t *new_array_pool;
-    apr_pool_t *old_array_pool;
     apr_hash_index_t *hi;
     apr_hash_entry_t **new_array;
     unsigned int new_max;
 
-    if (apr_pool_create(&new_array_pool, ht->pool) != APR_SUCCESS)
-        return; /* Give up and don't try to expand the array */
-    old_array_pool = ht->array_pool;
-    ht->array_pool = new_array_pool;
-
     new_max = ht->max * 2 + 1;
     new_array = alloc_array(ht, new_max);
     for (hi = apr_hash_first(NULL, ht); hi; hi = apr_hash_next(hi)) {
@@ -192,8 +176,6 @@ static void expand_array(apr_hash_t *ht)
     }
     ht->array = new_array;
     ht->max = new_max;
-
-    apr_pool_destroy(old_array_pool);
 }
 
 APR_DECLARE_NONSTD(unsigned int) apr_hashfunc_default(const char *char_key,
@@ -306,25 +288,22 @@ static apr_hash_entry_t **find_entry(apr_hash_t *ht,
 APR_DECLARE(apr_hash_t *) apr_hash_copy(apr_pool_t *pool,
                                         const apr_hash_t *orig)
 {
-    apr_pool_t *array_pool;
     apr_hash_t *ht;
     apr_hash_entry_t *new_vals;
     unsigned int i, j;
 
-    if (apr_pool_create(&array_pool, pool) != APR_SUCCESS)
-        return NULL;
-
     ht = apr_palloc(pool, sizeof(apr_hash_t) +
+                    sizeof(*ht->array) * (orig->max + 1) +
                     sizeof(apr_hash_entry_t) * orig->count);
     ht->pool = pool;
-    ht->array_pool = array_pool;
     ht->free = NULL;
     ht->count = orig->count;
     ht->max = orig->max;
     ht->hash_func = orig->hash_func;
-    ht->array = alloc_array(ht, ht->max);
+    ht->array = (apr_hash_entry_t **)((char *)ht + sizeof(apr_hash_t));
 
-    new_vals = (apr_hash_entry_t *)((char *)(ht) + sizeof(apr_hash_t));
+    new_vals = (apr_hash_entry_t *)((char *)(ht) + sizeof(apr_hash_t) +
+                                    sizeof(*ht->array) * (orig->max + 1));
     j = 0;
     for (i = 0; i <= ht->max; i++) {
         apr_hash_entry_t **new_entry = &(ht->array[i]);
@@ -413,7 +392,6 @@ APR_DECLARE(apr_hash_t *) apr_hash_merge(apr_pool_t *p,
                                                      const void *data),
                                          const void *data)
 {
-    apr_pool_t *array_pool;
     apr_hash_t *res;
     apr_hash_entry_t *new_vals = NULL;
     apr_hash_entry_t *iter;
@@ -437,12 +415,8 @@ APR_DECLARE(apr_hash_t *) apr_hash_merge(apr_pool_t *p,
     }
 #endif
 
-    if (apr_pool_create(&array_pool, p) != APR_SUCCESS)
-        return NULL;
-
     res = apr_palloc(p, sizeof(apr_hash_t));
     res->pool = p;
-    res->array_pool = array_pool;
     res->free = NULL;
     res->hash_func = base->hash_func;
     res->count = base->count;
-- 
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