java_lang_Throwable.cpp revision e8e1ddccd616e8226b7cc1e4e9fdb327429249e8 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/*
18 * java.lang.Throwable
19 */
20#include "Dalvik.h"
21#include "native/InternalNativePriv.h"
22
23
24/*
25 * private static Object nativeFillInStackTrace()
26 */
27static void Dalvik_java_lang_Throwable_nativeFillInStackTrace(const u4* args,
28    JValue* pResult)
29{
30    Object* stackState = NULL;
31
32    UNUSED_PARAMETER(args);
33
34    stackState = dvmFillInStackTrace(dvmThreadSelf());
35    RETURN_PTR(stackState);
36}
37
38/*
39 * private static StackTraceElement[] nativeGetStackTrace(Object stackState)
40 *
41 * The "stackState" argument must be the value returned by an earlier call to
42 * nativeFillInStackTrace().
43 */
44static void Dalvik_java_lang_Throwable_nativeGetStackTrace(const u4* args,
45    JValue* pResult)
46{
47    Object* stackState = (Object*) args[0];
48    ArrayObject* elements = NULL;
49
50    if (stackState == NULL) {
51        ALOGW("getStackTrace() called but no trace available");
52        RETURN_PTR(NULL);   /* could throw NPE; currently caller will do so */
53    }
54
55    elements = dvmGetStackTrace(stackState);
56    RETURN_PTR(elements);
57}
58
59const DalvikNativeMethod dvm_java_lang_Throwable[] = {
60    { "nativeFillInStackTrace", "()Ljava/lang/Object;",
61        Dalvik_java_lang_Throwable_nativeFillInStackTrace },
62    { "nativeGetStackTrace",    "(Ljava/lang/Object;)[Ljava/lang/StackTraceElement;",
63        Dalvik_java_lang_Throwable_nativeGetStackTrace },
64    { NULL, NULL, NULL },
65};
66