1 /* |
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2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 #include "JavaTypes.h" |
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27 #include "PlatformString.h" |
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28 |
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29 #include <list> |
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30 |
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31 |
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32 #ifdef DEBUG |
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33 TString JavaException::CreateExceptionMessage(JNIEnv* Env, |
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34 jthrowable Exception, jmethodID GetCauseMethod, |
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35 jmethodID GetStackTraceMethod, jmethodID ThrowableToTStringMethod, |
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36 jmethodID FrameToTStringMethod) { |
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37 |
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38 TString result; |
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39 jobjectArray frames = |
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40 (jobjectArray)Env->CallObjectMethod(Exception, GetStackTraceMethod); |
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41 |
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42 // Append Throwable.toTString(). |
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43 if (0 != frames) { |
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44 jstring jstr = (jstring)Env->CallObjectMethod(Exception, |
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45 ThrowableToTStringMethod); |
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46 const char* str = Env->GetStringUTFChars(jstr, 0); |
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47 result += PlatformString(str).toPlatformString(); |
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48 Env->ReleaseStringUTFChars(jstr, str); |
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49 Env->DeleteLocalRef(jstr); |
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50 } |
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51 |
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52 // Append stack trace if one exists. |
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53 if (Env->GetArrayLength(frames) > 0) { |
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54 jsize i = 0; |
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55 |
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56 for (i = 0; i < Env->GetArrayLength(frames); i++) { |
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57 // Get the string from the next frame and append it to |
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58 // the error message. |
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59 jobject frame = Env->GetObjectArrayElement(frames, i); |
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60 jstring obj = (jstring)Env->CallObjectMethod(frame, |
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61 FrameToTStringMethod); |
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62 const char* str = Env->GetStringUTFChars(obj, 0); |
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63 result += _T("\n "); |
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64 result += PlatformString(str).toPlatformString(); |
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65 Env->ReleaseStringUTFChars(obj, str); |
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66 Env->DeleteLocalRef(obj); |
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67 Env->DeleteLocalRef(frame); |
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68 } |
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69 } |
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70 |
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71 // If Exception has a cause then append the stack trace messages. |
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72 if (0 != frames) { |
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73 jthrowable cause = |
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74 (jthrowable)Env->CallObjectMethod(Exception, GetCauseMethod); |
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75 |
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76 if (cause != NULL) { |
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77 result += CreateExceptionMessage(Env, cause, GetCauseMethod, |
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78 GetStackTraceMethod, ThrowableToTStringMethod, |
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79 FrameToTStringMethod); |
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80 } |
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81 } |
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82 |
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83 return result; |
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84 } |
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85 #endif //DEBUG |
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86 |
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87 JavaException::JavaException() : Exception() {} |
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88 |
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89 //#ifdef WINDOWS |
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90 JavaException::JavaException(JNIEnv *Env, |
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91 const TString Message) : Exception(Message) { |
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92 //#endif //WINDOWS |
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93 //#ifdef POSIX |
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94 //JavaException::JavaException(JNIEnv *Env, TString message) { |
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95 //#endif //POSIX |
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96 |
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97 FEnv = Env; |
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98 FException = Env->ExceptionOccurred(); |
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99 Env->ExceptionClear(); |
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100 |
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101 #ifdef DEBUG |
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102 Platform& platform = Platform::GetInstance(); |
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103 |
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104 if (platform.GetDebugState() == dsNone) { |
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105 jclass ThrowableClass = Env->FindClass("java/lang/Throwable"); |
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106 |
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107 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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108 Env->ExceptionClear(); |
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109 return; |
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110 } |
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111 |
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112 jmethodID GetCauseMethod = Env->GetMethodID(ThrowableClass, |
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113 "getCause", "()Ljava/lang/Throwable;"); |
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114 |
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115 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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116 Env->ExceptionClear(); |
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117 return; |
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118 } |
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119 |
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120 jmethodID GetStackTraceMethod = Env->GetMethodID(ThrowableClass, |
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121 "getStackTrace", "()[Ljava/lang/StackTraceElement;"); |
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122 |
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123 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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124 Env->ExceptionClear(); |
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125 return; |
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126 } |
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127 |
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128 jmethodID ThrowableToTStringMethod = Env->GetMethodID(ThrowableClass, |
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129 "toString", "()Ljava/lang/String;"); |
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130 |
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131 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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132 Env->ExceptionClear(); |
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133 return; |
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134 } |
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135 |
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136 jclass FrameClass = Env->FindClass("java/lang/StackTraceElement"); |
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137 |
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138 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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139 Env->ExceptionClear(); |
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140 return; |
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141 } |
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142 |
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143 jmethodID FrameToTStringMethod = Env->GetMethodID(FrameClass, |
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144 "toString", "()Ljava/lang/String;"); |
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145 |
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146 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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147 Env->ExceptionClear(); |
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148 return; |
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149 } |
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150 |
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151 TString lmessage = CreateExceptionMessage(Env, FException, |
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152 GetCauseMethod, GetStackTraceMethod, ThrowableToTStringMethod, |
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153 FrameToTStringMethod); |
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154 SetMessage(lmessage); |
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155 } |
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156 #endif //DEBUG |
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157 } |
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158 |
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159 void JavaException::Rethrow() { |
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160 FEnv->Throw(FException); |
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161 } |
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