目前我正试图和JNI一起玩。
我的Java代码：
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代码：
#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(){
}
代码编译得很好但是如果我运行我的java类我得到了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
任何人都已经遇到过这个？
答案 0 :(得分：0)
使用javah重新生成头文件，并相应地修复.c文件。您已在Java本机方法声明中将返回类型从void更改为boolean，而不调整本机代码。
摆脱main（）。
答案 1 :(得分：0)
@technomage： 我把它编译为.dll而不是exe
使用visual studio 2012中的预配置shell而不是普通的cmd半解决了我的问题。似乎是我的env配置中的错误
谢谢大家