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extern/stdcxx/4.2.1/tests/include/rw_alloc.h

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+/************************************************************************
+ *
+ * rw_alloc.h - definitions of rw_alloc and rw_free
+ *
+ * $Id: rw_alloc.h
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ * 
+ **************************************************************************/
+
+#ifndef RW_ALLOC_H_INCLUDED
+#define RW_ALLOC_H_INCLUDED
+
+
+#include <testdefs.h>   // for test config macros
+
+enum {
+    RW_PROT_NONE  = 0,
+    RW_PROT_READ  = 1 << 0,
+    RW_PROT_WRITE = 1 << 1,
+    RW_PROT_RDWR  = RW_PROT_READ | RW_PROT_WRITE,
+    RW_PROT_BELOW = 1 << 3
+};
+
+// if flags == -1 memory will be allocated by malloc();
+// if flags != -1 memory will be allocated by system call and
+// additional guard page with PAGE_NOACCESS protection will be allocated
+// if RW_PROT_BELOW & flags != 0 then guard page will be located right
+// before the user data, otherwise - right after the user data
+// if RWSTD_ALLOC_FLAGS environment variable is defined and != 0
+// and flags == -1, then rw_alloc will use value of RWSTD_ALLOC_FLAGS
+// instead of flags variable
+_TEST_EXPORT void*
+rw_alloc(_RWSTD_SIZE_T, int /*flags*/ = -1);
+
+// free the memory block, allocated by rw_alloc()
+_TEST_EXPORT void
+rw_free(void*);
+
+#endif   // RW_ALLOC_H_INCLUDED