1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* Copyright (c) 2016, 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "precompiled.hpp"
#include "runtime/interfaceSupport.inline.hpp"
#include "classfile/symbolTable.hpp"
#include "unittest.hpp"
TEST_VM(SymbolTable, temp_new_symbol) {
// Assert messages assume these symbols are unique, and the refcounts start at
// one, but code does not rely on this.
JavaThread* THREAD = JavaThread::current();
// the thread should be in vm to use locks
ThreadInVMfromNative ThreadInVMfromNative(THREAD);
Symbol* abc = SymbolTable::new_symbol("abc", CATCH);
int abccount = abc->refcount();
TempNewSymbol ss = abc;
ASSERT_EQ(ss->refcount(), abccount) << "only one abc";
ASSERT_EQ(ss->refcount(), abc->refcount()) << "should match TempNewSymbol";
Symbol* efg = SymbolTable::new_symbol("efg", CATCH);
Symbol* hij = SymbolTable::new_symbol("hij", CATCH);
int efgcount = efg->refcount();
int hijcount = hij->refcount();
TempNewSymbol s1 = efg;
TempNewSymbol s2 = hij;
ASSERT_EQ(s1->refcount(), efgcount) << "one efg";
ASSERT_EQ(s2->refcount(), hijcount) << "one hij";
// Assignment operator
s1 = s2;
ASSERT_EQ(hij->refcount(), hijcount + 1) << "should be two hij";
ASSERT_EQ(efg->refcount(), efgcount - 1) << "should be no efg";
s1 = ss; // s1 is abc
ASSERT_EQ(s1->refcount(), abccount + 1) << "should be two abc (s1 and ss)";
ASSERT_EQ(hij->refcount(), hijcount) << "should only have one hij now (s2)";
s1 = s1; // self assignment
ASSERT_EQ(s1->refcount(), abccount + 1) << "should still be two abc (s1 and ss)";
TempNewSymbol s3;
Symbol* klm = SymbolTable::new_symbol("klm", CATCH);
int klmcount = klm->refcount();
s3 = klm; // assignment
ASSERT_EQ(s3->refcount(), klmcount) << "only one klm now";
Symbol* xyz = SymbolTable::new_symbol("xyz", CATCH);
int xyzcount = xyz->refcount();
{ // inner scope
TempNewSymbol s_inner = xyz;
}
ASSERT_EQ(xyz->refcount(), xyzcount - 1)
<< "Should have been decremented by dtor in inner scope";
}
|
