пул переделан под любую структуру объекта

c/malloc_speed_test/pool_list.c

@@ -8,12 +8,12 @@
 struct block_s {
     struct block_s *next;
     struct block_s *prev;
-    char obj[1];
+    char obj;
 };
 
 struct block_pool {
 	size_t nblocks;
-	struct block_s *pool;
+	void *pool;
 	struct block_s *free_pool;
 	struct block_s *busy_pool;
 };
@@ -21,27 +21,32 @@ struct block_pool {
 /*
  * инициализация пула
  */
-void pool_init(struct block_pool *bp, size_t nblocks)
+void pool_init(struct block_pool *bp, size_t nblocks, size_t block_size)
 {
 	size_t i;
 
 	bp->nblocks = nblocks;
 
-	bp->pool = (struct block_s *)malloc(nblocks * sizeof(struct block_s));
+	block_size += 2 * sizeof(struct block_s *);
 
-	size_t max_i = nblocks - 1;
-	for (i = 1; i < max_i; i++) {
-		bp->pool[i].prev = &bp->pool[i - 1];
-		bp->pool[i].next = &bp->pool[i + 1];
+	bp->pool = (struct block_s *)malloc(nblocks * block_size);
+
+	void *p = bp->pool + block_size,
+	     *pmax = p + (nblocks - 2) * block_size;
+
+	for ( ; p < pmax; p += block_size) {
+		((struct block_s *)p)->prev = (struct block_s *)(p - block_size);
+		((struct block_s *)p)->next = (struct block_s *)(p + block_size);
 	}
 
-	bp->pool[0].prev = NULL;
-	bp->pool[0].next = &bp->pool[1];
+	((struct block_s *)bp->pool)->prev = NULL;
+	((struct block_s *)bp->pool)->next = (struct block_s *)(bp->pool + block_size);
 
-	bp->pool[nblocks - 1].prev = &bp->pool[nblocks - 2];
-	bp->pool[nblocks - 1].next = NULL;
+	((struct block_s *)(bp->pool + (nblocks - 1) * block_size))->prev =
+		(struct block_s *)(bp->pool + (nblocks - 2) * block_size);
+	((struct block_s *)(bp->pool + (nblocks - 1) * block_size))->next = NULL;
 
-	bp->free_pool = &bp->pool[0];
+	bp->free_pool = (struct block_s *)bp->pool;
 	bp->busy_pool = NULL;
 }
 
@@ -121,7 +126,7 @@ int main()
 
 	size_t nblocks = 0xffffff;
 
-	pool_init(&bp, nblocks);
+	pool_init(&bp, nblocks, sizeof(struct object_s));
 	
 	void **mem = malloc(nblocks * sizeof(void *));
 	
@@ -130,7 +135,7 @@ int main()
 			printf("не удалось выделить память под %lld блок\n", i);
 			break;
 		}
-
+return 0;	
 	for (i = 0; i < nblocks; i++)
 		pool_free(&bp, mem[i]);
 

c/malloc_speed_test/run.sh

@@ -9,5 +9,5 @@ c++ -O2 vector_add.cpp -o vector_add && time ./vector_add
 echo -e "\n\npool1.c test:"
 cc -O2 pool1.c -o pool1 && time ./pool1
 
-echo -e "\n\npool_list.c test (вычесть 279мс на init()):"
+echo -e "\n\npool_list.c test (вычесть 121мс на init()):"
 cc -O2 pool_list.c -o pool_list && time ./pool_list