Question

最近我开始在我的项目中使用JNI。这是我的代码：

options[0].optionString = "-Djava.class.path=.";
memset(&vm_args, 0, sizeof(vm_args));
vm_args.version = JNI_VERSION_1_2;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = JNI_TRUE;
status = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);

它在JNI_CreateJavaVM()崩溃，我的程序在没有任何消息或异常的情况下中止。

Visual Studio给了我：

'SurvivorCore.exe': Loaded 'D:\Develop\Survivor\x86\Debug\SurvivorCore.exe', Symbols loaded.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'D:\Develop\Survivor\x86\Debug\SurvivorLibrary.dll', Symbols loaded.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\msvcp120d.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\msvcr120d.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'D:\Develop\Survivor\x86\Debug\UIAdapterSelector.dll', Symbols loaded.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\mscoree.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\advapi32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\msvcrt.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\sechost.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\rpcrt4.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\sspicli.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\cryptbase.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\bcryptprimitives.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscoreei.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\shlwapi.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\combase.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\user32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\gdi32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\imm32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\msctf.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\msvcr120_clr0400.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\mscorlib\c90ef9a73ea0044641d31b19023aad61\mscorlib.ni.dll', Cannot find or open the PDB file.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'D:\Develop\Survivor\x86\Debug\UIAdapterSelector.dll', Symbols loaded.
'SurvivorCore.exe': Loaded 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\clrjit.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\oleaut32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\diasymreader.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\ole32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\System\1c5fe4cb68f67046baec4c3a854f722f\System.ni.dll', Cannot find or open the PDB file.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'SurvivorCore.exe': Loaded 'ImageAtBase0x4940000', Loading disabled by Include/Exclude setting.
'SurvivorCore.exe': Loaded 'ImageAtBase0x4ab0000', Loading disabled by Include/Exclude setting.
'SurvivorCore.exe': Unloaded 'ImageAtBase0x4940000'
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\urlmon.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\iertutil.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\wininet.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\userenv.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\profapi.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\secur32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\shell32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\SHCore.dll', Cannot find or open the PDB file.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'D:\Develop\Survivor\x86\Debug\CSharpUI2DImpl.dll', Symbols loaded.
'SurvivorCore.exe': Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Drawing\8efdc7a3726640f79d9333da88accaf8\System.Drawing.ni.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Windows.Forms\70c6bf4a51d18b4a9a1805cd48d1caad\System.Windows.Forms.ni.dll', Cannot find or open the PDB file.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Windows.Forms\v4.0_4.0.0.0__b77a5c561934e089\System.Windows.Forms.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\uxtheme.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.9600.16384_none_7c55c866aa0c3ff0\comctl32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Configuration\00fc7d14bbb38db00e4103912c041adf\System.Configuration.ni.dll', Cannot find or open the PDB file.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\version.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\cryptsp.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\rsaenh.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\bcrypt.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\assembly\NativeImages_v4.0.30319_32\System.Xml\43edd630a9f8cd6ac38c527b106ec94f\System.Xml.ni.dll', Cannot find or open the PDB file.
'SurvivorCore.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\kernel.appcore.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\dwmapi.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\WinSxS\x86_microsoft.windows.gdiplus_6595b64144ccf1df_1.1.9600.17227_none_dad9452e5bcb7986\GdiPlus.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\DWrite.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'D:\Develop\Survivor\x86\Debug\AIAdapterSelector.dll', Symbols loaded.
'SurvivorCore.exe': Loaded 'D:\Develop\Survivor\x86\Debug\jvm.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\wsock32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\winmm.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\psapi.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\msvcr100.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\ws2_32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\winmmbase.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\nsi.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\cfgmgr32.dll', Cannot find or open the PDB file.
'SurvivorCore.exe': Loaded 'C:\Windows\SysWOW64\devobj.dll', Cannot find or open the PDB file.
The thread 'Win32 Thread' (0x1404) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x13bc) has exited with code 1 (0x1).
The thread 'Win32 Thread' (0x1010) has exited with code 1 (0x1).
The thread 'Win32 Thread' (0x16a8) has exited with code 1 (0x1).
The thread 'Win32 Thread' (0x1a0c) has exited with code 1 (0x1).
The program '[3292] SurvivorCore.exe: Native' has exited with code 1 (0x1).
The program '[3292] SurvivorCore.exe: Managed (v4.0.30319)' has exited with code 1 (0x1).

此代码位于我的Exe在运行时加载的Dll中。我的Exe是本机程序，Dll是C ++ / CIL（因为我想为其他语言制作通用适配器）。我的操作系统是64位。

我安装并且未安装JDK＆amp; JRE一次又一次。

我曾尝试仅安装64位JDK，仅安装32位，以及32位和64位。

我想编译程序的x86和x64版本。

此外，部署jvm.dll的正确方法是什么？我只是将它复制到我的文件夹中。

Answer 1

现在我转向动态加载jvm.dll：

typedef jint(JNICALL *pCreateJavaVM)(JavaVM **, void**, void *);

HINSTANCE hInstance = LoadLibrary(L"C:\\Program Files (x86)\\Java\\jre1.8.0_25\\bin\\client\\jvm.dll");
pCreateJavaVM CreateJavaVM = (pCreateJavaVM)GetProcAddress(hInstance, "JNI_CreateJavaVM");

options[0].optionString = "-Djava.class.path=.";
vm_args.version = JNI_VERSION_1_2;
vm_args.nOptions = 1;
vm_args.options = options; 
vm_args.ignoreUnrecognized = JNI_TRUE;
status = CreateJavaVM(&jvm, (void**)&env, &vm_args);

它有效...我不知道为什么......

Answer 2

JNI_CreateJavaVM()中的JVM崩溃通常是由JVM的默认堆大小过大引起的。尝试使用-Xms和-Xmx选项调整尺寸以满足您的需求：

JavaVMInitArgs vm_args;
memset(&vm_args, 0, sizeof(vm_args));

JavaVMOption options[3];
memset(&options, 0, sizeof(options));

options[0].optionString = "-Djava.class.path=.";
options[1].optionString = "-Xms1m"; // 1MB
options[2].optionString = "-Xmx1g"; // 1GB

vm_args.version = JNI_VERSION_1_2;
vm_args.nOptions = 3;
vm_args.options = options;
vm_args.ignoreUnrecognized = JNI_TRUE;

status = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);

您可以指定可以传递给java.exe的任何命令行选项：

http://docs.oracle.com/javase/8/docs/technotes/tools/windows/java.html

JNI_CreateJavaVM在没有任何消息或异常的情况下使我的程序崩溃

2 个答案: