File: | jvmaccess/source/virtualmachine.cxx |
Location: | line 56, column 9 |
Description: | Called C++ object pointer is null |
1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |||
2 | /* | |||
3 | * This file is part of the LibreOffice project. | |||
4 | * | |||
5 | * This Source Code Form is subject to the terms of the Mozilla Public | |||
6 | * License, v. 2.0. If a copy of the MPL was not distributed with this | |||
7 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. | |||
8 | * | |||
9 | * This file incorporates work covered by the following license notice: | |||
10 | * | |||
11 | * Licensed to the Apache Software Foundation (ASF) under one or more | |||
12 | * contributor license agreements. See the NOTICE file distributed | |||
13 | * with this work for additional information regarding copyright | |||
14 | * ownership. The ASF licenses this file to you under the Apache | |||
15 | * License, Version 2.0 (the "License"); you may not use this file | |||
16 | * except in compliance with the License. You may obtain a copy of | |||
17 | * the License at http://www.apache.org/licenses/LICENSE-2.0 . | |||
18 | */ | |||
19 | ||||
20 | #include "jvmaccess/virtualmachine.hxx" | |||
21 | ||||
22 | #include "osl/diagnose.h" | |||
23 | ||||
24 | using jvmaccess::VirtualMachine; | |||
25 | ||||
26 | VirtualMachine::AttachGuard::CreationException::CreationException() | |||
27 | {} | |||
28 | ||||
29 | VirtualMachine::AttachGuard::CreationException::CreationException( | |||
30 | CreationException const &) | |||
31 | {} | |||
32 | ||||
33 | VirtualMachine::AttachGuard::CreationException::~CreationException() | |||
34 | {} | |||
35 | ||||
36 | VirtualMachine::AttachGuard::CreationException & | |||
37 | VirtualMachine::AttachGuard::CreationException::operator =( | |||
38 | CreationException const &) | |||
39 | { | |||
40 | return *this; | |||
41 | } | |||
42 | ||||
43 | VirtualMachine::AttachGuard::AttachGuard( | |||
44 | rtl::Reference< VirtualMachine > const & rMachine): | |||
45 | m_xMachine(rMachine) | |||
46 | { | |||
47 | OSL_ENSURE(m_xMachine.is(), "bad parameter")do { if (true && (!(m_xMachine.is()))) { sal_detail_logFormat ((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/jvmaccess/source/virtualmachine.cxx" ":" "47" ": "), "%s", "bad parameter"); } } while (false); | |||
48 | m_pEnvironment = m_xMachine->attachThread(&m_bDetach); | |||
49 | if (m_pEnvironment == 0) | |||
50 | throw CreationException(); | |||
51 | } | |||
52 | ||||
53 | VirtualMachine::AttachGuard::~AttachGuard() | |||
54 | { | |||
55 | if (m_bDetach) | |||
| ||||
56 | m_xMachine->detachThread(); | |||
| ||||
57 | } | |||
58 | ||||
59 | VirtualMachine::VirtualMachine(JavaVM * pVm, int nVersion, bool bDestroy, | |||
60 | JNIEnv * pMainThreadEnv): | |||
61 | m_pVm(pVm), m_nVersion(nVersion), m_bDestroy(bDestroy) | |||
62 | { | |||
63 | (void) pMainThreadEnv; // avoid warnings | |||
64 | #ifdef SOLAR_JAVA1 | |||
65 | OSL_ENSURE(pVm != 0 && nVersion >= JNI_VERSION_1_2 && pMainThreadEnv != 0,do { if (true && (!(pVm != 0 && nVersion >= 0x00010002 && pMainThreadEnv != 0))) { sal_detail_logFormat ((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/jvmaccess/source/virtualmachine.cxx" ":" "66" ": "), "%s", "bad parameter"); } } while (false) | |||
66 | "bad parameter")do { if (true && (!(pVm != 0 && nVersion >= 0x00010002 && pMainThreadEnv != 0))) { sal_detail_logFormat ((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/jvmaccess/source/virtualmachine.cxx" ":" "66" ": "), "%s", "bad parameter"); } } while (false); | |||
67 | #endif | |||
68 | } | |||
69 | ||||
70 | VirtualMachine::~VirtualMachine() | |||
71 | { | |||
72 | if (m_bDestroy) | |||
73 | { | |||
74 | // Do not destroy the VM. Under Java 1.3, the AWT event loop thread is | |||
75 | // not a daemon thread and is never terminated, so that calling | |||
76 | // DestroyJavaVM (waiting for all non-daemon threads to terminate) hangs | |||
77 | // forever. | |||
78 | /* | |||
79 | jint n = m_pVm->DestroyJavaVM(); | |||
80 | OSL_ENSURE(n == JNI_OK, "JNI: DestroyJavaVM failed"); | |||
81 | */ | |||
82 | } | |||
83 | } | |||
84 | ||||
85 | JNIEnv * VirtualMachine::attachThread(bool * pAttached) const | |||
86 | { | |||
87 | #ifndef SOLAR_JAVA1 | |||
88 | (void) pAttached; | |||
89 | return 0; | |||
90 | #else | |||
91 | OSL_ENSURE(pAttached != 0, "bad parameter")do { if (true && (!(pAttached != 0))) { sal_detail_logFormat ((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/jvmaccess/source/virtualmachine.cxx" ":" "91" ": "), "%s", "bad parameter"); } } while (false); | |||
92 | JNIEnv * pEnv; | |||
93 | jint n = m_pVm->GetEnv(reinterpret_cast< void ** >(&pEnv), m_nVersion); | |||
94 | if (n != JNI_OK0 && n != JNI_EDETACHED(-2)) { | |||
95 | OSL_FAIL("JNI: GetEnv failed")do { if (true && (((sal_Bool)1))) { sal_detail_logFormat ((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/jvmaccess/source/virtualmachine.cxx" ":" "95" ": "), "%s", "JNI: GetEnv failed"); } } while (false ); | |||
96 | } | |||
97 | if (pEnv == 0) | |||
98 | { | |||
99 | if (m_pVm->AttachCurrentThread | |||
100 | ( | |||
101 | #ifndef ANDROID | |||
102 | reinterpret_cast< void ** >(&pEnv), | |||
103 | #else | |||
104 | // The Android <jni.h> has AttachCurrentThread() taking a | |||
105 | // JNIEnv** and not void ** | |||
106 | &pEnv, | |||
107 | #endif | |||
108 | 0) | |||
109 | != JNI_OK0) | |||
110 | return 0; | |||
111 | *pAttached = true; | |||
112 | } | |||
113 | else | |||
114 | *pAttached = false; | |||
115 | return pEnv; | |||
116 | #endif | |||
117 | } | |||
118 | ||||
119 | void VirtualMachine::detachThread() const | |||
120 | { | |||
121 | #ifdef SOLAR_JAVA1 | |||
122 | if (m_pVm->DetachCurrentThread() != JNI_OK0) { | |||
123 | OSL_FAIL("JNI: DetachCurrentThread failed")do { if (true && (((sal_Bool)1))) { sal_detail_logFormat ((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/usr/local/src/libreoffice/jvmaccess/source/virtualmachine.cxx" ":" "123" ": "), "%s", "JNI: DetachCurrentThread failed"); } } while (false); | |||
124 | } | |||
125 | #endif | |||
126 | } | |||
127 | ||||
128 | /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |