Libc-262.tar.gz

[apple/libc.git] / include / objc / zone.h

diff --git a/include/objc/zone.h b/include/objc/zone.h
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+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License").  You may not use this file except in compliance with the
+ * License.  Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ * 
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#import <objc/malloc.h>
+
+typedef malloc_zone_t NXZone;
+
+#define NX_NOZONE  ((NXZone *)0)
+
+/*********     Interface to zone based malloc  ************/
+
+extern NXZone *NXDefaultMallocZone(void);
+    // Returns the default zone used by the malloc(3) calls
+
+extern NXZone *NXCreateZone(size_t startSize, size_t granularity, int canFree);
+    // Create a new zone with its own memory pool.
+    // canfree: if 0 the allocator will never free memory and mallocing will be fast
+
+extern void NXNameZone(NXZone *z, const char *name);
+    // name a zone; The string will be copied
+
+extern void *NXZoneMalloc(malloc_zone_t *zone, size_t size);
+
+extern void *NXZoneRealloc(malloc_zone_t *zone, void *ptr, size_t size);
+
+extern void *NXZoneCalloc(NXZone *zonep, size_t numElems, size_t byteSize);
+    // Allocates and then clears
+
+extern void NXZoneFree(malloc_zone_t *zone, void *ptr);
+
+extern void NXDestroyZone(malloc_zone_t *zone);
+
+extern NXZone *NXZoneFromPtr(void *ptr);
+    // Returns the zone for a pointer, or NX_NOZONE if not in any zone.
+    // The ptr must have been returned from a malloc or realloc call.
+