--- a/src/hotspot/share/memory/filemap.cpp Thu Jan 18 16:37:43 2018 -0500
+++ b/src/hotspot/share/memory/filemap.cpp Tue Jan 16 16:57:53 2018 -0800
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -659,7 +659,7 @@
static const char* shared_region_name[] = { "MiscData", "ReadWrite", "ReadOnly", "MiscCode", "OptionalData",
"String1", "String2", "OpenArchive1", "OpenArchive2" };
-char* FileMapInfo::map_region(int i) {
+char* FileMapInfo::map_region(int i, char** top_ret) {
assert(!MetaspaceShared::is_heap_region(i), "sanity");
struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
size_t used = si->_used;
@@ -686,6 +686,12 @@
MemTracker::record_virtual_memory_type((address)base, mtClassShared);
#endif
+
+ if (!verify_region_checksum(i)) {
+ return NULL;
+ }
+
+ *top_ret = base + size;
return base;
}
@@ -1040,27 +1046,6 @@
return status;
}
-// The following method is provided to see whether a given pointer
-// falls in the mapped shared metadata space.
-// Param:
-// p, The given pointer
-// Return:
-// True if the p is within the mapped shared space, otherwise, false.
-bool FileMapInfo::is_in_shared_space(const void* p) {
- for (int i = 0; i < MetaspaceShared::num_non_heap_spaces; i++) {
- char *base;
- if (_header->_space[i]._used == 0) {
- continue;
- }
- base = _header->region_addr(i);
- if (p >= base && p < base + _header->_space[i]._used) {
- return true;
- }
- }
-
- return false;
-}
-
// Check if a given address is within one of the shared regions
bool FileMapInfo::is_in_shared_region(const void* p, int idx) {
assert(idx == MetaspaceShared::ro ||