Introduce new type-based pool allocator.

	* alloc-pool.c (struct alloc_pool_descriptor): Move definition
	to header file.
	* alloc-pool.h (pool_allocator::pool_allocator): New function.
	(pool_allocator::release): Likewise.
	(inline pool_allocator::release_if_empty): Likewise.
	(inline pool_allocator::~pool_allocator): Likewise.
	(pool_allocator::allocate): Likewise.
	(pool_allocator::remove): Likewise.

From-SVN: r223942

gcc/ChangeLog

+2015-06-01  Martin Liska  <mliska@suse.cz>
+
+	* alloc-pool.c (struct alloc_pool_descriptor): Move definition
+	to header file.
+	* alloc-pool.h (pool_allocator::pool_allocator): New function.
+	(pool_allocator::release): Likewise.
+	(inline pool_allocator::release_if_empty): Likewise.
+	(inline pool_allocator::~pool_allocator): Likewise.
+	(pool_allocator::allocate): Likewise.
+	(pool_allocator::remove): Likewise.
+
 2015-06-01  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* sched-deps.c (sched_analyze_2): Replace fuseable with fusible

gcc/alloc-pool.c

@@ -25,6 +25,8 @@ along with GCC; see the file COPYING3.  If not see
 #include "hash-table.h"
 #include "hash-map.h"
 
+ALLOC_POOL_ID_TYPE last_id;
+
 #define align_eight(x) (((x+7) >> 3) << 3)
 
 /* The internal allocation object.  */
@@ -58,36 +60,10 @@ typedef struct allocation_object_def
 #define USER_PTR_FROM_ALLOCATION_OBJECT_PTR(X)				\
    ((void *) (((allocation_object *) (X))->u.data))
 
-#ifdef ENABLE_CHECKING
-/* Last used ID.  */
-static ALLOC_POOL_ID_TYPE last_id;
-#endif
-
-/* Store information about each particular alloc_pool.  Note that this
-   will underestimate the amount the amount of storage used by a small amount:
-   1) The overhead in a pool is not accounted for.
-   2) The unallocated elements in a block are not accounted for.  Note
-   that this can at worst case be one element smaller that the block
-   size for that pool.  */
-struct alloc_pool_descriptor
-{
-  /* Number of pools allocated.  */
-  unsigned long created;
-  /* Gross allocated storage.  */
-  unsigned long allocated;
-  /* Amount of currently active storage. */
-  unsigned long current;
-  /* Peak amount of storage used.  */
-  unsigned long peak;
-  /* Size of element in the pool.  */
-  int elt_size;
-};
-
 /* Hashtable mapping alloc_pool names to descriptors.  */
-static hash_map<const char *, alloc_pool_descriptor> *alloc_pool_hash;
+hash_map<const char *, alloc_pool_descriptor> *alloc_pool_hash;
 
-/* For given name, return descriptor, create new if needed.  */
-static struct alloc_pool_descriptor *
+struct alloc_pool_descriptor *
 allocate_pool_descriptor (const char *name)
 {
   if (!alloc_pool_hash)
@@ -98,6 +74,7 @@ allocate_pool_descriptor (const char *name)
   return &alloc_pool_hash->get_or_insert (name);
 }
 
+
 /* Create a pool of things of size SIZE, with NUM in each block we
    allocate.  */