JNI異常訪問衝突

Question

此刻我正在嘗試使用JNI。

我的java代碼：

public class test{ 
static{ 

    System.loadLibrary("wakeup64"); 

} 

public static native boolean setWakeupTime(Date date); 

public static void set(){ 
    Date d = new Date(); 
    setWakeupTime(d); 

} 

} 

C代碼：

#include <jni.h> 
#include "cpp_interface.h" 
#include <stdio.h> 

JNIEXPORT void JNICALL Java_test_setWakeupTime 
    (JNIEnv *env, jclass cl, jobject date){ 

    printf("test"); 

    } 

    int main(){ 

    } 

代碼編譯正常，但如果我跑我的Java類i'm得到一個EXCEPTION_ACCESS_VIOLATION：

# 
# A fatal error has been detected by the Java Runtime Environment: 
# 
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000000000c038, pid=7456, tid=4640 
# 
# JRE version: 7.0_03-b05 
# Java VM: Java HotSpot(TM) 64-Bit Server VM (22.1-b02 mixed mode windows-amd64  compressed oops) 
# Problematic frame: 
# C 0x000000000000c038 
# 
# Failed to write core dump. Minidumps are not enabled by default on client versions of  Windows 
# 
# If you would like to submit a bug report, please visit: 
# http://bugreport.sun.com/bugreport/crash.jsp 
# The crash happened outside the Java Virtual Machine in native code. 
# See problematic frame for where to report the bug. 
# 

--------------- T H R E A D --------------- 

Current thread (0x000000000211b000): JavaThread "main" [_thread_in_native, id=4640,  stack(0x0000000002290000,0x0000000002390000)] 

siginfo: ExceptionCode=0xc0000005, ExceptionInformation=0x0000000000000008 0x000000000000c038 

Registers: 
RAX=0x0000000000000000, RBX=0x0000000000000015, RCX=0x00000000fffffff4,  RDX=0x000000014000d040 
RSP=0x000000000238f668, RBP=0x000000000238f858, RSI=0x0000000000000001, RDI=0x00000000000000fc 
R8 =0x000000000238f878, R9 =0x00000000065cc490, R10=0x00000000023a21bc, R11=0x000000005b958940 
R12=0x0000000000000000, R13=0x000000073b0739e0, R14=0x000000014000d570, R15=0x000000000211b000 
RIP=0x000000000000c038, EFLAGS=0x0000000000010246 

Top of Stack: (sp=0x000000000238f668) 
0x000000000238f668: 0000000140002cd9 000000000238f7c0 
0x000000000238f678: 000000005b922181 000000000211bd88 
0x000000000238f688: 000000000211b000 0000000000000003 
0x000000000238f698: 000000000211ba90 000000000238f878 
0x000000000238f6a8: 0000000140002d60 0000000000000011 
0x000000000238f6b8: 000000000211b000 000000014000d750 
0x000000000238f6c8: 000000073b0739e0 000000000211b990 
0x000000000238f6d8: 0000000140004374 000000000211bd88 
0x000000000238f6e8: 0000000000000004 000000000238f7c0 
0x000000000238f6f8: 00000000023ad623 000000073b0739e0 
0x000000000238f708: 0000000140004453 0000000000000022 
0x000000000238f718: 000000073b073730 000000014000d750 
0x000000000238f728: 000000000211b000 000000000238f7c8 
0x000000000238f738: 00000001400015e2 000000014000d040 
0x000000000238f748: 0000000140001000 000000000238f858 
0x000000000238f758: 0000000000000000 000000073b0739e0 

Instructions: (pc=0x000000000000c038) 
0x000000000000c018: 
[error occurred during error reporting (printing registers, top of stack, instructions near pc), id 0xc0000005] 

Register to memory mapping: 

RAX=0x0000000000000000 is an unknown value 
RBX=0x0000000000000015 is an unknown value 
RCX=0x00000000fffffff4 is an unknown value 
RDX=0x000000014000d040 is an unknown value 
RSP=0x000000000238f668 is pointing into the stack for thread: 0x000000000211b000 
RBP=0x000000000238f858 is pointing into the stack for thread: 0x000000000211b000 
RSI=0x0000000000000001 is an unknown value 
RDI=0x00000000000000fc is an unknown value 
R8 =0x000000000238f878 is pointing into the stack for thread: 0x000000000211b000 
R9 =0x00000000065cc490 is an unknown value 
R10=0x00000000023a21bc is an Interpreter codelet 
method entry point (kind = native) [0x00000000023a1f40, 0x00000000023a27c0] 2176  bytes 
R11=0x000000005b958940 is an unknown value 
R12=0x0000000000000000 is an unknown value 
R13=0x000000073b0739e0 is an oop 
{method} 
- klass: {other class} 
R14=0x000000014000d570 is an unknown value 
R15=0x000000000211b000 is a thread 


Stack: [0x0000000002290000,0x0000000002390000], sp=0x000000000238f668, free space=1021k 
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) 
C 0x000000000000c038 
j test.print()V+9 
j Main.main([Ljava/lang/String;)V+10 
v ~StubRoutines::call_stub 

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code) 
j wecker.setWakeupTime(Ljava/util/Date;)Z+0 
j wecker.print()V+9 
j Main.main([Ljava/lang/String;)V+10 
v ~StubRoutines::call_stub 

--------------- P R O C E S S --------------- 

Java Threads: (=> current thread) 
    0x00000000065a9000 JavaThread "Service Thread" daemon [_thread_blocked, id=5300,  stack(0x0000000007840000,0x0000000007940000)] 
    0x00000000065a7800 JavaThread "C2 CompilerThread1" daemon [_thread_blocked, id=7416,  stack(0x0000000007690000,0x0000000007790000)] 
    0x0000000006594000 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=4656, stack(0x00000000074d0000,0x00000000075d0000)] 
    0x0000000006591000 JavaThread "Attach Listener" daemon [_thread_blocked, id=5864, stack(0x00000000073b0000,0x00000000074b0000)] 
    0x000000000658c000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=7252, stack(0x0000000007260000,0x0000000007360000)] 
    0x0000000002067000 JavaThread "Finalizer" daemon [_thread_blocked, id=2840, stack(0x0000000007060000,0x0000000007160000)] 
    0x000000000205e800 JavaThread "Reference Handler" daemon [_thread_blocked, id=8056,  stack(0x0000000006e30000,0x0000000006f30000)] 
=>0x000000000211b000 JavaThread "main" [_thread_in_native, id=4640,  stack(0x0000000002290000,0x0000000002390000)] 

Other Threads: 
    0x0000000002055000 VMThread [stack: 0x0000000006c00000,0x0000000006d00000] [id=8016] 
    0x00000000065c2000 WatcherThread [stack: 0x0000000007a70000,0x0000000007b70000] [id=6884] 

VM state:not at safepoint (normal execution) 

VM Mutex/Monitor currently owned by a thread: None 

Heap 
PSYoungGen  total 57344K, used 983K [0x00000007c0000000, 0x00000007c4000000,  0x0000000800000000) 
    eden space 49152K, 2% used [0x00000007c0000000,0x00000007c00f5c98,0x00000007c3000000) 
    from space 8192K, 0% used [0x00000007c3800000,0x00000007c3800000,0x00000007c4000000) 
    to space 8192K, 0% used [0x00000007c3000000,0x00000007c3000000,0x00000007c3800000) 
PSOldGen  total 131072K, used 0K [0x0000000740000000, 0x0000000748000000, 0x00000007c0000000) 
    object space 131072K, 0% used [0x0000000740000000,0x0000000740000000,0x0000000748000000) 
PSPermGen  total 21248K, used 2569K [0x000000073ae00000, 0x000000073c2c0000, 0x0000000740000000) 
    object space 21248K, 12% used [0x000000073ae00000,0x000000073b0827c8,0x000000073c2c0000) 

Code Cache [0x0000000002390000, 0x0000000002600000, 0x0000000005390000) 
total_blobs=169 nmethods=0 adapters=136 free_code_cache=48773Kb  largest_free_block=49943680 

Dynamic libraries: 
0x000000013f530000 - 0x000000013f563000  C:\Windows\system32\java.exe 
0x0000000077730000 - 0x00000000778d9000  C:\Windows\SYSTEM32\ntdll.dll 
0x0000000077610000 - 0x000000007772f000  C:\Windows\system32\kernel32.dll 
0x000007fefde10000 - 0x000007fefde7c000  C:\Windows\system32\KERNELBASE.dll 
0x00000000707d0000 - 0x000000007081a000  D:\Program Files\AVAST  Software\Avast\snxhk64.dll 
0x000007feff7f0000 - 0x000007feff8cb000  C:\Windows\system32\ADVAPI32.dll 
0x000007fefe7b0000 - 0x000007fefe84f000  C:\Windows\system32\msvcrt.dll 
0x000007feff970000 - 0x000007feff98f000  C:\Windows\SYSTEM32\sechost.dll 
0x000007fefe3e0000 - 0x000007fefe50d000  C:\Windows\system32\RPCRT4.dll 
0x0000000077510000 - 0x000000007760a000  C:\Windows\system32\USER32.dll 
0x000007fefe360000 - 0x000007fefe3c7000  C:\Windows\system32\GDI32.dll 
0x000007fefe3d0000 - 0x000007fefe3de000  C:\Windows\system32\LPK.dll 
0x000007fefe900000 - 0x000007fefe9c9000  C:\Windows\system32\USP10.dll 
0x000007fefc360000 - 0x000007fefc554000   C:\Windows\WinSxS\amd64_microsoft.windows.common- controls_6595b64144ccf1df_6.0.7601.17514_none_fa396087175ac9ac\COMCTL32.dll 
0x000007fefe9d0000 - 0x000007fefea41000  C:\Windows\system32\SHLWAPI.dll 
0x000007feffa10000 - 0x000007feffa3e000  C:\Windows\system32\IMM32.DLL 
0x000007fefe250000 - 0x000007fefe359000  C:\Windows\system32\MSCTF.dll 
0x0000000062860000 - 0x0000000062931000  D:\Program Files\Java\jre7\bin\msvcr100.dll 
0x000000005b7a0000 - 0x000000005be7a000  D:\Program  Files\Java\jre7\bin\server\jvm.dll 
0x000007fefabf0000 - 0x000007fefabf9000  C:\Windows\system32\WSOCK32.dll 
0x000007fefe850000 - 0x000007fefe89d000  C:\Windows\system32\WS2_32.dll 
0x000007feff7e0000 - 0x000007feff7e8000  C:\Windows\system32\NSI.dll 
0x000007fefbc40000 - 0x000007fefbc7b000  C:\Windows\system32\WINMM.dll 
0x0000000077900000 - 0x0000000077907000  C:\Windows\system32\PSAPI.DLL 
0x0000000062a10000 - 0x0000000062a1f000  D:\Program Files\Java\jre7\bin\verify.dll 
0x00000000629e0000 - 0x0000000062a08000  D:\Program Files\Java\jre7\bin\java.dll 
0x00000000629c0000 - 0x00000000629d5000  D:\Program Files\Java\jre7\bin\zip.dll 
0x0000000140000000 - 0x0000000140012000    C:\Users\xx\workspace\test\src\wakeup64.dll 

VM Arguments: 
java_command: Main 
Launcher Type: SUN_STANDARD 

Environment Variables: 
PATH=C:\Program Files (x86)\AMD APP\bin\x86_64;C:\Program Files (x86)\AMD  APP\bin\x86;D:\Program Files\Common Files\Microsoft Shared\Windows Live;D:\Program Files  (x86)\Common Files\Microsoft Shared\Windows  Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPow erShell\v1.0\;C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program  Files (x86)\Windows Live\Shared;D:\Program Files(x86)\Android\android-sdk\platform- tools\;C:\Program Files\ATI Technologies\ATI.ACE\Core-Static;D:\Program  Files\Java\jdk1.7.0_02\bin;D:\MinGW\bin;D:\Program Files (x86)\Microsoft Visual Studio  9.0\VC\bin 
USERNAME=xx 
OS=Windows_NT 
PROCESSOR_IDENTIFIER=AMD64 Family 16 Model 5 Stepping 2, AuthenticAMD 



--------------- S Y S T E M --------------- 

OS: Windows 7 , 64 bit Build 7601 Service Pack 1 

CPU:total 4 (4 cores per cpu, 1 threads per core) family 16 model 5 stepping 2, cmov, cx8, fxsr, mmx, sse, sse2, sse3, popcnt, mmxext, 3dnowpref, lzcnt, sse4a 

Memory: 4k page, physical 12581048k(7862816k free), swap 25160244k(19112368k free) 

vm_info: Java HotSpot(TM) 64-Bit Server VM (22.1-b02) for windows-amd64 JRE (1.7.0_03-b05), built on Feb 3 2012 20:43:56 by "java_re" with unknown MS VC++:1600 

time: Sun Jul 29 01:02:23 2012 
elapsed time: 0 seconds 

任何人都已經遇到過這個？

Answer 1

@technomage： 我它編譯成一個.dll不是一個exe

半解決了使用預配置的外殼從Visual Studio 2012而不是正常的CMD我的問題。似乎是一個錯誤在我的ENV配置

感謝大家

Answer 2

用javah重新生成頭文件，並相應地修復.c文件。您已經在Java本地方法聲明中將返回類型從void更改爲boolean，而無需調整本機代碼。

並擺脫main（）。