xnu-2422.1.72.tar.gz

[apple/xnu.git] / libsyscall / wrappers / unix03 / munmap.c

diff --git a/libsyscall/wrappers/unix03/munmap.c b/libsyscall/wrappers/unix03/munmap.c
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+/*
+ * Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#include <sys/cdefs.h>
+
+#if __DARWIN_UNIX03
+
+#include <sys/mman.h>
+#include <mach/mach_init.h>
+#include "stack_logging_internal.h"
+
+/*
+ * munmap stub, for stack logging of VM allocations.
+ *
+ * This is for UNIX03 only.
+ */
+extern int __munmap(void *, size_t);
+
+int
+munmap(void *addr, size_t len)
+{
+    int result = __munmap(addr, len);
+    
+    if (__syscall_logger) {
+        __syscall_logger(stack_logging_type_vm_deallocate, (uintptr_t)mach_task_self(), (uintptr_t)addr, len, 0, 0);
+    }
+    
+    return result;
+}
+
+#endif /* __DARWIN_UNIX03 */