mem/pool: improve the scalable memory allocator.

- thread ID is no longer needed.
- Add an embedded option "USE_PAGE".
  With USE_PAGE, allocation becomes page-level.
  Without USE_PAGE, allocation becomes object-level.

src/include/mem/zm_pool.h

@@ -13,7 +13,7 @@ typedef zm_ptr_t *zm_pool_t;
 
 int zm_pool_create(size_t element_size, zm_pool_t *handle);
 int zm_pool_destroy(zm_pool_t *handle);
-int zm_pool_alloc(zm_pool_t handle, int tid, void **ptr);
-int zm_pool_free(zm_pool_t handle, int tid, void *ptr);
+int zm_pool_alloc(zm_pool_t handle, void **ptr);
+int zm_pool_free(zm_pool_t handle, void *ptr);
 
 #endif /* _ZM_POOL_H_ */

src/include/queue/zm_queue_types.h

@@ -41,7 +41,7 @@ struct zm_msqnode {
 struct zm_msqueue {
     zm_atomic_ptr_t head ZM_ALLIGN_TO_CACHELINE;
     zm_atomic_ptr_t tail ZM_ALLIGN_TO_CACHELINE;
-    zm_pool_t pool;
+    zm_pool_t pool ZM_ALLIGN_TO_CACHELINE;
 };
 
 /* faqueue */

src/include/queue/zm_swpqueue.h

@@ -15,9 +15,9 @@ int zm_swpqueue_dequeue(zm_swpqueue_t* q, void **data);
 int zm_swpqueue_isempty_weak(zm_swpqueue_t* q);
 int zm_swpqueue_isempty_strong(zm_swpqueue_t* q);
 
-int zm_swpqueue_init_explicit(zm_swpqueue_t *, int);
-int zm_swpqueue_enqueue_explicit(zm_swpqueue_t* q, void *data, int);
-int zm_swpqueue_dequeue_explicit(zm_swpqueue_t* q, void **data, int);
+int zm_swpqueue_init_explicit(zm_swpqueue_t *);
+int zm_swpqueue_enqueue_explicit(zm_swpqueue_t* q, void *data);
+int zm_swpqueue_dequeue_explicit(zm_swpqueue_t* q, void **data);
 
 
 #endif /* _ZM_SWPQUEUE_H */