为什么在使用Android native Thread时报错Fatal signal 11 (SIGSEGV)？

sugelawa

我仿效Android的代码写了这样一个非常简单的Android C++ Thread类使用的测试程序：先构建一个WorkerInterface基类，然后派生了一个Worker类，他们有一个loopOnce方法。另外从Thread派生了一个WorkerThread类，用来实现多线程，WorkerThread有一个sp<WorkerInterface> mWorker的成员变量，它在WorkerThread构造函数中初始化 mWorker = new Worker()。在WorkerThread的threadLoop方法中调用成员变量mWorker的loopOnce方法，但在这个地方报错Fatal signal 11 (SIGSEGV)。整了几点怎么试都不能解决，有大侠能帮忙诊断下吗，我将无比感激。

1. #include <jni.h>
   
2. #include <cutils/log.h>
   
3. #include <utils/threads.h>
   
4. #include <utils/RefBase.h>
   
5. 
   
6. namespace android {
   
7. 
   
8. 
   
9. //------------------------------------------------
   
10. class WorkerInterface : public virtual RefBase {
    
11. protected:
    
12.     WorkerInterface() { }
    
13.     virtual ~WorkerInterface() { }
    
14. 
    
15. public:
    
16.     virtual void loopOnce() = 0;
    
17. };
    
18. //------------------------------------------------
    
19. 
    
20. 
    
21. //------------------------------------------------
    
22. // Worker class which will do the job in the Thread
    
23. class Worker : public WorkerInterface {
    
24. public:
    
25.         Worker();
    
26.     virtual ~Worker();
    
27.    
    
28.     virtual void loopOnce();
    
29. };
    
30. 
    
31. 
    
32. // Implement of the Worker class
    
33. Worker::Worker() {
    
34. }
    
35. 
    
36. Worker::~Worker() {
    
37. }
    
38. 
    
39. void Worker::loopOnce() {
    
40.     ALOGE("+++++++++++++++++++++++++++++Worker::loopOnce");
    
41. }
    
42. //------------------------------------------------
    
43. 
    
44. //------------------------------------------------
    
45. // Worker thread class which construct the thread
    
46. class WorkerThread: public Thread {
    
47. public:
    
48.         WorkerThread();
    
49.         virtual bool threadLoop();
    
50. private:
    
51.         sp<WorkerInterface> mWorker;
    
52. };
    
53. 
    
54. 
    
55. // Implement of the WorkerThread class
    
56. WorkerThread::WorkerThread() : Thread(false) {
    
57.         mWorker = new Worker();
    
58. }
    
59. 
    
60. bool WorkerThread::threadLoop() {
    
61.         ALOGD("------------------threadLoop");
    
62.         // *******************======>下面就是罪恶的报错的地方: Fatal signal 11 (SIGSEGV)
    
63.         mWorker->loopOnce();   
    
64.         return true;
    
65. }
    
66. //------------------------------------------------
    
67. 
    
68. //------------------------------------------------
    
69. JNIEXPORT jint JNICALL Java_me_autotouch_autotouch_Kernel_nativeReadyToRecord(JNIEnv *env, jobject obj) {
    
70.        
    
71.         sp<WorkerThread> thread = new WorkerThread();
    
72.         thread->run("WorkerThread", PRIORITY_URGENT_DISPLAY);
    
73.         while(1);
    
74.     ALOGD("jni calling end");
    
75. 
    
76.         return 0;
    
77. }
    
78. 
    
79. jint JNI_OnLoad(JavaVM* vm, void* reserved) {
    
80.         return JNI_VERSION_1_4;
    
81. }
    
82. //------------------------------------------------

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sugelawa

顶上去顶上去顶上去