• 设为首页
  • 点击收藏
  • 手机版
    手机扫一扫访问
    迪恩网络手机版
  • 关注官方公众号
    微信扫一扫关注
    公众号
登陆 注册

C++ JNI_CreateJavaVM函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中JNI_CreateJavaVM函数的典型用法代码示例。如果您正苦于以下问题：C++ JNI_CreateJavaVM函数的具体用法？C++ JNI_CreateJavaVM怎么用？C++ JNI_CreateJavaVM使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了JNI_CreateJavaVM函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: CreateJavaVM

void CreateJavaVM(char *classpath, jint (JNICALL *printfn)(FILE *fp, const char *format, va_list args))
{
#ifdef USE_JDK12
	if (!gJavaVM && !gJavaEnv) {

		JavaVMOption options[2];
		JavaVMInitArgs vm_args;

		int	nOptions = 1;

		options[0].name = "classpath";
		if (!classpath)
			options[0].value.p = getenv("CLASSPATH");
		else
			options[0].value.p = classpath;

		if (printfn) {
			options[1].name = "vfprintf";
			options[1].value.p = printfn;
			nOptions++;
		}

		vm_args.version = JNI_VERSION_1_2;
		vm_args.options = options;
		vm_args.nOptions = nOptions;
		vm_args.result = NULL;


		JNI_CreateJavaVM(&gJavaVM, (void **)&gJavaEnv, (void *)&vm_args);
		assert(gJavaVM && gJavaEnv);
	}
#else
	if (!gJavaVM && !gJavaEnv) {
		JDK1_1InitArgs vm_args;
		JNI_GetDefaultJavaVMInitArgs(&vm_args);

		if (!classpath)
			vm_args.classpath = getenv("CLASSPATH");
		else
			vm_args.classpath = classpath;

		if (printfn)
			vm_args.vfprintf = printfn;

		JNI_CreateJavaVM(&gJavaVM, &gJavaEnv, &vm_args);

		assert(gJavaVM && gJavaEnv);
	}
#endif
}
开发者ID:lukfugl，项目名称:raytracer，代码行数:50，代码来源:JavaVM.cpp


示例2: createJVM

JNIEnv* createJVM(){
  if(globalE) {
    return globalE;
  }
  int exitCode = 0;
  int optionsCount = 0;

  JavaVMOption options[5];

  #ifdef BOOT_JAR
    options[optionsCount++].optionString = const_cast<char*>("-Xbootclasspath:[bootJar]");
  #else
    options[optionsCount++].optionString
       = const_cast<char*>("-Davian.bootimage=bootimageBin");
    options[optionsCount++].optionString
       = const_cast<char*>("-Davian.codeimage=codeimageBin");
  #endif
  #ifdef BOOTSTRAP_SO
    options[optionsCount++].optionString =
     const_cast<char*>(BOOTSTRAP_SO);
  #endif

  void* env;
  JavaVMInitArgs vmArgs;
  vmArgs.version = JNI_VERSION_1_2;
  vmArgs.ignoreUnrecognized = JNI_TRUE;
  vmArgs.nOptions = optionsCount;
  vmArgs.options = options;
  JNI_CreateJavaVM(&vm, &env, &vmArgs);
  globalE = static_cast<JNIEnv*>(env);
  return globalE;
}
开发者ID:pserwylo，项目名称:OsmAnd-core，代码行数:32，代码来源:routing_test.cpp


示例3: create_jvm

/// Creates the Java virtual machine.
/// Returns 1 on success and 0 on failure.
int create_jvm(char *classpath) {
	if (jvm == NULL) {
		JavaVMOption options[3];
		JavaVMInitArgs vm_args;

		char destination[200];
		strcpy(destination, "-Djava.class.path=");
		strcat(destination, classpath);
		options[0].optionString = destination;
		options[1].optionString = "-Xms256m";
		options[2].optionString = "-Xmx1024m";

		vm_args.version = JNI_VERSION_1_2;
		vm_args.nOptions = 3;
		vm_args.options = options;
		long status = JNI_CreateJavaVM(&jvm, (void **) &env, &vm_args);

		if (status != JNI_OK) {
			last_error = ERROR_COULD_NOT_CREATE_VM;
			return FAILURE;
		}

		return SUCCESS;
	}

	return FAILURE;
}
开发者ID:rolandtritsch，项目名称:RustJNI，代码行数:29，代码来源:interface.c


示例4: create_jvm

static void create_jvm()
{
  int i, option_count;
  JavaVMInitArgs vm_args;

  option_count = vmArgsCount + ((classPath != NULL) ? 1 : 0);
  vm_args.version = JNI_VERSION_1_4;
  vm_args.ignoreUnrecognized = JNI_FALSE;
  vm_args.nOptions = option_count;
  vm_args.options = calloc(option_count, sizeof(JavaVMOption));
  for (i = 0; i < vmArgsCount; i++) {
    vm_args.options[i].optionString = vmArgs[i];
    vm_args.options[i].extraInfo = NULL;
  }
  if (classPath != NULL) {
    vm_args.options[i].optionString = create_class_path_option(classPath);
    vm_args.options[i].extraInfo = NULL;
  }

  if (JNI_CreateJavaVM(&jvm, (void**)&mainEnv, &vm_args) != 0)
    errx(50, "JNI_CreateJavaVM() failed");

  mainClass = (*mainEnv)->FindClass(mainEnv, className);
  if (mainClass == NULL)
    errx(50, "Main class not found: %s", className);
  mainMethod = (*mainEnv)->GetStaticMethodID(mainEnv, mainClass, "main", "([Ljava/lang/String;)V");
  if (mainMethod == NULL)
    errx(50, "Main method not found in: %s", className);
  shutdownMethod = (*mainEnv)->GetStaticMethodID(mainEnv, mainClass, "shutdown", "()V");
  if (shutdownMethod == NULL)
    errx(50, "Shutdown method not found in: %s", className);
  reloadMethod = (*mainEnv)->GetStaticMethodID(mainEnv, mainClass, "reload", "()V");
  (*mainEnv)->ExceptionClear(mainEnv); /* Ignore possible exception caused by missing reload() */
}
开发者ID:bmellstrom，项目名称:semeru，代码行数:34，代码来源:semeru.c


示例5: create_destroy_jvm

int create_destroy_jvm() {
	JavaVMOption options[3];
	JavaVMInitArgs vm_args;
	JNIEnv *env;
	JavaVM *jvm;
	long status;

	options[0].optionString = "-Xms512m";
	options[1].optionString = "-Xmx512m";
//	options[2].optionString = "-verbose";

	memset(&vm_args, 0, sizeof(vm_args));
	vm_args.version = JNI_VERSION_1_8;
	vm_args.nOptions = 2;
	vm_args.options = options;
        vm_args.ignoreUnrecognized = JNI_TRUE;

	status = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
	
	if (status != JNI_ERR) {
		printf("jvm is created: %p\n", env);
		sleep(3);

		status = (*jvm)->DestroyJavaVM(jvm);
		printf("jvm is destroyed (%d)\n", status);
		sleep(3);
	} else {
		perror("fail to create jvm");
	}

	return 0;
}
开发者ID:crackcraft，项目名称:create_destoy_jvm，代码行数:32，代码来源:test.c


示例6: main

int main(void)
{
  JavaVMInitArgs vmargs;
  JavaVM *vm;
  void *env;
  JavaVMOption myoptions[1];

  /* set up libtool/libltdl dlopen emulation */
  LTDL_SET_PRELOADED_SYMBOLS();
  
  myoptions[0].optionString = concatString("-Xbootclasspath:", getenv("BOOTCLASSPATH"));

  vmargs.version = JNI_VERSION_1_2;
  
  if (JNI_GetDefaultJavaVMInitArgs (&vmargs) < 0)
    {
      fprintf(stderr, " Cannot retrieve default arguments\n");
      return 1;
    }

  vmargs.nOptions = 1;
  vmargs.options = myoptions;

  if (JNI_CreateJavaVM (&vm, &env, &vmargs) < 0)
    {
      fprintf(stderr, " Cannot create the Java VM\n");
      return 1;
    }

  (*vm)->DestroyJavaVM(vm);

  return 0;
}
开发者ID:BillTheBest，项目名称:kaffe，代码行数:33，代码来源:jniBase.c


示例7: main

int main(int argc,char **argv)
{
	JavaVMOption options[1];
	JNIEnv *env;
	JavaVM *jvm;
	JavaVMInitArgs vm_args;
	long status;
	jclass cls;
	jmethodID mid;
	
	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;
	status = JNI_CreateJavaVM(&jvm,(void **) &env,&vm_args);

	if (status != JNI_ERR) {
		cls = (*env)->FindClass(env,"Hello");
		if (cls != 0) {
			mid = (*env)->GetStaticMethodID(env,cls,"sayHello","()V");\
			if (mid != 0) {
				(*env)->CallStaticVoidMethod(env,cls,mid,NULL);
			}
		}
	}
    (*jvm)->DestroyJavaVM(jvm);
	return 0;
}
开发者ID:rkalyankumar，项目名称:hellojni，代码行数:29，代码来源:hellojvm.c


示例8: BaseInterface

JavaInterface::JavaInterface( const char *pzComponentPath, const char *pzComponentSettings)
	:	BaseInterface(pzComponentPath, pzComponentSettings)
{
	if (m_jvm)
		return;
	JNIEnv *env;

#ifdef _WIN32
	MS_JDK1_1InitArgs vm_args;
	JNI_GetDefaultJavaVMInitArgs(&vm_args);
	vm_args.nVersion = 0x00010001;
	vm_args.pcszClasspath = (char *)(const char *)m_strComponentPath;
	int nRet = JNI_CreateJavaVM(&m_jvm, &env, &vm_args);
	if (nRet < 0) 
	{
		throw GException("JavaIntegration", 1,nRet);
	}
#else
#ifdef _DYNAMIC_JAVA_LINK_
	JavaVMInitArgs vm_args;
	void *dllHandle = _OPENLIB("libjvm.so");
	if (dllHandle)
	{
	   JavaVMOption options[3];
	   GString strTemp;
	   strTemp.Format("-Djava.class.path=%s",(const char *)m_strComponentPath);
	   options[0].optionString = "-Djava.compiler=NONE"; // disable JIT
	   options[1].optionString = (char *)(const char *)strTemp;
	   vm_args.options = options;
	   vm_args.version = JNI_VERSION_1_2;
	   vm_args.nOptions = 2;
	   vm_args.ignoreUnrecognized = JNI_FALSE;

		void *pfn2 = 0;
		ExceptionHandlerScope duration;
		XML_TRY
		{
			pfn2 = (void *)_PROCADDRESS(dllHandle, "JNI_CreateJavaVM");
		}
		XML_CATCH(ex)
		{
			throw GException("JavaIntegration", 6, getenv("LD_LIBRARY_PATH"));
		}
		if (pfn2)
		{
			cout << "Creating VM\n";
			int nRet = ((fnJNI_CreateJavaVM)pfn2)(&m_jvm, (void **) &env, &vm_args);
			if (nRet < 0) 
			{
				throw GException("JavaIntegration", 1,nRet);
			}
			else
			{
				cout << "Created Java Interpreter\n";
			}
		}
	}
	else
	{
		throw GException("JavaIntegration", 5, getenv("LD_LIBRARY_PATH"));
开发者ID:BrianAberle，项目名称:XMLFoundation，代码行数:60，代码来源:IntegrationJava.cpp


示例9: main

int main(int argc, char **argv)
{

    printf("----> SPACE RACCOONS - We will save you!!!!1\n");

    JavaVM *jvm;
    JNIEnv *env;

    JavaVMInitArgs vm_args;

    JavaVMOption options[4];

    options[0].optionString = "-Xms512M";
    options[1].optionString = "-Xmx1024M";
    options[2].optionString = "-Djava.class.path=com.spaceraccoons.client.jar";
    options[3].optionString = "-Dvisualvm.display.name=SpaceRaccoons";

    vm_args.version = JNI_VERSION_1_6;
    vm_args.options = options;
    vm_args.nOptions = 4;
    vm_args.ignoreUnrecognized = true;

    printf("Initializing Java virtual machine...\n");
    if ((JNI_CreateJavaVM(&jvm, &env, &vm_args)) != JNI_OK)
    {
        // Initialization of the JavaVM failed! :-(
        printf("Initialization of the JavaVM has failed.");
        return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}
开发者ID:spaceraccoons，项目名称:spaceraccoons，代码行数:32，代码来源:main.c


示例10: java_vm_create

static caddr_t
java_vm_create (JNIEnv ** java_vm_env)
{
  JavaVMInitArgs vm_args;
  JavaVMOption options[5];
  jint res;
  caddr_t classpath_opt = NULL;
  int inx;
  char *classpath = NULL;

  if (!classpath)
    {
      classpath=getenv ("CLASSPATH");
    }
  if (!classpath)
    {
      classpath= ".";
    }

  classpath_opt = dk_alloc_box (strlen (classpath) + 20, DV_SHORT_STRING);
  sprintf (classpath_opt, "-Djava.class.path=%s", classpath);
  options[0].optionString = classpath_opt;
  vm_args.nOptions = 1;
  vm_args.version = JNI_VERSION_1_2;
  vm_args.options = options;
  vm_args.ignoreUnrecognized = JNI_FALSE;

  res = JNI_CreateJavaVM (&java_vm, (void **) java_vm_env, &vm_args);
  if (res < 0)
    return srv_make_new_error ("42000", "JV002", "Can't create the Java VM");
  else
    return NULL;
}
开发者ID:China-ls，项目名称:virtuoso-opensource，代码行数:33，代码来源:java_skel.c


示例11: create_vm

/*-------------------------------------------------------------------------*
 * NAME
 *   create_vm - create a jvm
 * PARAMETER
 *  argc - number of arguments for the jvm
 *  argv - arguments for the jvm
 *
 * RETURN
 *
 *   NULL -  jvm could not be created
 *   else -  jvm has been created
 *
 * EXTERNAL
 *
 * DESCRIPTION
 *-------------------------------------------------------------------------*/
JNIEnv* create_vm(int argc, char** argv) {
	JavaVM* jvm;
	JNIEnv* env;
	JavaVMInitArgs args;
   int i = 0;
	JavaVMOption* options = (JavaVMOption*)malloc(argc*sizeof(JavaVMOption));
	
	/* There is a new JNI_VERSION_1_4, but it doesn't add anything for the purposes of our example. */
	args.version = JNI_VERSION_1_2;
	args.nOptions = argc;
   for(i=0; i < argc; i++) {
      /*printf("jvm_args[%d] = %s\n", i, argv[i]);*/
      options[i].optionString = argv[i];
   }
	args.options = options;
	args.ignoreUnrecognized = JNI_FALSE;

#ifdef DARWIN
   /*
   ** for darwin there exists no JNI_CreateJavaVM, Why not maybe a fix in the future ???
   */
	i = JNI_CreateJavaVM_Impl(&jvm, (void **)&env, &args);
#else   
	i = JNI_CreateJavaVM(&jvm, (void **)&env, &args);
#endif   
   if(i<0) {
      fprintf(stderr,"can not create JVM (error code %d)\n", i);
      env = NULL;
   }
   
   free(options);
	return env;
}
开发者ID:BlueBolt，项目名称:BB_GridEngine，代码行数:49，代码来源:jgdi_test.c


示例12: test_createJVM

int test_createJVM()
{
  JavaVMInitArgs jvm_args;
  JavaVMOption jvm_options[4];

  char* classPathArg = test_buildClassPath();
  int numJVMOptions = 0;
  jvm_options[numJVMOptions].optionString = classPathArg;
  numJVMOptions++;

  char maxHeapOptions[64];
  bool passMaxHeapToJVM = true;
  int maxHeapEnvvarMB = 4096;
  jvm_options[numJVMOptions].optionString = (char *) "-Xmx1024m";
  numJVMOptions++;

  jvm_args.version            = JNI_VERSION_1_6;
  jvm_args.options            = jvm_options;
  jvm_args.nOptions           = numJVMOptions;
  jvm_args.ignoreUnrecognized = 1;

  int ret = JNI_CreateJavaVM(&gp_jvm, (void**)&_tlp_jenv, &jvm_args);
  free(classPathArg);
  return ret;
}
开发者ID:RuoYuHP，项目名称:incubator-trafodion，代码行数:25，代码来源:CheckIfHbaseAvailable.cpp


示例13: main

int main(int argc, char** argv)
{
	(void)argc;
	(void)argv;

	VirtualMachine vm;
	vm.LoadFile("script.as");
	vm.Call("void main()");

	JavaVM *jvm;       /* denotes a Java VM */
    JNIEnv *env;       /* pointer to native method interface */
    JavaVMInitArgs vm_args; /* JDK/JRE 6 VM initialization arguments */
    JavaVMOption* options = new JavaVMOption[1];
    options[0].optionString = "-Djava.class.path=/usr/lib/java";
    vm_args.version = JNI_VERSION_1_6;
    vm_args.nOptions = 1;
    vm_args.options = options;
    vm_args.ignoreUnrecognized = false;
    /* load and initialize a Java VM, return a JNI interface
     * pointer in env */
    JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
    delete options;
    /* invoke the Main.test method using the JNI */
    jclass cls = env->FindClass("Main");
    jmethodID mid = env->GetStaticMethodID(cls, "test", "(I)V");
    env->CallStaticVoidMethod(cls, mid, 100);
    /* We are done. */
    jvm->DestroyJavaVM();

	std::cout << "Hello World! (C++)" << std::endl;
}
开发者ID:BennyQBD，项目名称:Experiments，代码行数:31，代码来源:main.cpp


示例14: main

int main(int argc, char * argv[]){
    JavaVMInitArgs  vm_args;
    JavaVMOption    *options;
    jint            res;

    options = (JavaVMOption*)malloc(sizeof(JavaVMOption));
    options[0].optionString = "-Djava.class.path=.";

    vm_args.version = 0x00010002;
    vm_args.options = options;
    vm_args.nOptions = 1;
    vm_args.ignoreUnrecognized = JNI_FALSE;

    res = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
    if (res != JNI_OK){
        printf("JNI_CreateJavaVM: %d\n", res);
        return 1;
    }

    printf("Java Initialized\n");

    jobject driver = load_driver("postgresql-9.4-1201.jdbc41.jar", "org.postgresql.Driver");
    if (driver != NULL){
        print_version(driver);
        connect(driver, "jdbc:postgresql:pilif", "pilif", NULL);

        (*env)->DeleteLocalRef(env, driver);
        driver = NULL;
    }

    (*jvm)->DestroyJavaVM(jvm);

    printf("Java destroyed\n");
    return 0;
}
开发者ID:pilif，项目名称:jdbc-playground，代码行数:35，代码来源:test.c


示例15: jvm

Jvm::Jvm(const std::vector<std::string>& options, JNIVersion jniVersion)
  : jvm(NULL),
    env(NULL),
    voidClass("V"),
    booleanClass("Z"),
    byteClass("B"),
    charClass("C"),
    shortClass("S"),
    intClass("I"),
    longClass("J"),
    floatClass("F"),
    doubleClass("D"),
    stringClass(JClass::forName("java/lang/String"))
{
  JavaVMInitArgs vmArgs;
  vmArgs.version = jniVersion;
  vmArgs.ignoreUnrecognized = false;

  JavaVMOption* opts = new JavaVMOption[options.size()];
  for (int i = 0; i < options.size(); i++) {
    opts[i].optionString = const_cast<char*>(options[i].c_str());
  }
  vmArgs.nOptions = options.size();
  vmArgs.options = opts;

  int result = JNI_CreateJavaVM(&jvm, (void**) &env, &vmArgs);
  assure(result != JNI_ERR, env);

  delete[] opts;
}
开发者ID:cloudsyk，项目名称:spark_cpp_api，代码行数:30，代码来源:jvm.cpp


示例16: _create_jvm

static JNIEnv*
_create_jvm(JavaVM** jvm) {
#define __OPT_CLASSPATH "-Djava.class.path="
	JNIEnv*             jenv;
	JavaVMInitArgs      jvmargs;
	JavaVMOption        jvmopt;
	char                cp[4096]; /* class path : 4096 is enough size */
	const char*         cpenv; /* class path env value */

	/* -1 to remove trailing 0 */
	memcpy(cp, __OPT_CLASSPATH, sizeof(__OPT_CLASSPATH)-1);
	cpenv = getenv("CLASSPATH");
	if (!cpenv) {
		cpenv = "./yljfe.jar";
	}
	strcpy(cp + sizeof(__OPT_CLASSPATH) - 1, cpenv);

	jvmopt.optionString = cp;
	jvmargs.version = JNI_VERSION_1_6;
	jvmargs.nOptions = 1;
	jvmargs.options = &jvmopt;
	jvmargs.ignoreUnrecognized = 0;

	if (0 > JNI_CreateJavaVM(jvm, (void**)&jenv, &jvmargs)) {
		/* error case */
		return NULL;
	}
	return jenv;
#undef __OPT_CLASSPATH
}
开发者ID:yhcting，项目名称:ylisp，代码行数:30，代码来源:main.c


示例17: create_jvm

void create_jvm(JavaVM** jvm, JNIEnv** env)
{
  std::vector<std::string> opt_strs{
      // "-verbose:jni",
      // "-verbose:class",
      "-Dswing.useSystemFontSettings=true",
  };

  std::vector<JavaVMOption> options;

  for (auto const& o_s : opt_strs) {
    JavaVMOption jop;
    jop.optionString = const_cast<char*>(o_s.c_str());
    jop.extraInfo = nullptr;
    options.push_back(jop);
  };

  JavaVMInitArgs vm_args;
  vm_args.version = JNI_VERSION_1_8;
  vm_args.nOptions = options.size();
  vm_args.options = &*options.begin();
  vm_args.ignoreUnrecognized = false;

  JNI_CreateJavaVM(jvm, reinterpret_cast<void**>(env), &vm_args);

  if ((nullptr == *jvm) || (nullptr == *env)) {
    std::cerr << "failed to create JavaVM" << std::endl;
    exit(EXIT_FAILURE);
  }
}
开发者ID:gene-hightower，项目名称:MKUltra，代码行数:30，代码来源:jvm.cpp


示例18: default_create_java_vm

static JSBool
default_create_java_vm(SystemJavaVM* *jvm, JNIEnv* *initialEnv, void* initargs)
{
    jint err;
    const char* user_classpath = (const char*)initargs;
    char* full_classpath = NULL;

    /* No Java VM supplied, so create our own */
    JDK1_1InitArgs vm_args;
    memset(&vm_args, 0, sizeof(vm_args));

    /* Magic constant indicates JRE version 1.1 */
    vm_args.version = 0x00010001;
    JNI_GetDefaultJavaVMInitArgs(&vm_args);

    /* Prepend the classpath argument to the default JVM classpath */
    if (user_classpath) {
#if defined(XP_UNIX) || defined(XP_BEOS)
        full_classpath = JS_smprintf("%s:%s", user_classpath, vm_args.classpath);
#else
        full_classpath = JS_smprintf("%s;%s", user_classpath, vm_args.classpath);
#endif
        if (!full_classpath) {
            return JS_FALSE;
        }
        vm_args.classpath = (char*)full_classpath;
    }

    err = JNI_CreateJavaVM((JavaVM**)jvm, initialEnv, &vm_args);
    
    if (full_classpath)
        JS_smprintf_free(full_classpath);
    
    return err == 0;
}
开发者ID:amyvmiwei，项目名称:firefox，代码行数:35，代码来源:jsj_simpleapi.c


示例19: main

   int main(int argc, char* argv[]) {     
       
       JNIEnv *env;
       JavaVM *jvm;
       jint res;
       if(argc!=2)
       {
       		printf("Debe pasar la clase a ejecutar por parametro\n");
       		printf("Ejemplo: invocationinterface clase\n");
       		return(-1);
       }

       JavaVMInitArgs vm_args;       
		JavaVMOption options[2];
  	   options[0].optionString ="-Djava.class.path=/opt/jdk1.5.0_09/lib:.:/home/javi/cursojni/netbeans/MetodosInstancia/build/classes";
       options[0].extraInfo = NULL;
       options[1].optionString="-Djava.library.path=/home/javi/cursojni/eclipse/MetodosInstancia/Debug";
       options[1].extraInfo = NULL;
       vm_args.version = JNI_VERSION_1_2;       
       vm_args.options = options;
       vm_args.nOptions = 2;
       vm_args.ignoreUnrecognized = JNI_FALSE;
       // Create the Java VM 
       res = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
       if (res < 0) {
            fprintf(stderr, "Can't create Java VM\n");
            return(1);
       }
       printf("Resultado de crear la vm %d\n", res);       
       jclass cls = (*env)->FindClass(env, argv[1]);       
       if (cls == NULL) {
       		printf("No se encuentra la clase %s\n", argv[1]);
            goto destroy;
       }
       
		jmethodID mid = (*env)->GetStaticMethodID(env, cls, "main","([Ljava/lang/String;)V");
		if (mid == NULL) {
				printf("La clase no contiene metodo main\n");
				goto destroy;
		}
		
		jstring jstr = (*env)->NewStringUTF(env, " desde JNI!");
		if (jstr == NULL) {
			goto destroy;
		}
		jclass stringClass = (*env)->FindClass(env, "java/lang/String");
		jobjectArray args = (*env)->NewObjectArray(env, 1, stringClass, jstr);
		if (args == NULL) {
			goto destroy;
		}
		(*env)->CallStaticVoidMethod(env, cls, mid, args);
		
destroy:
			if ((*env)->ExceptionOccurred(env)) {
				(*env)->ExceptionDescribe(env);
			}
			(*jvm)->DestroyJavaVM(jvm);
		return(0);
}
开发者ID:javirufo，项目名称:JNIExamples，代码行数:59，代码来源:main.c


示例20: initJVM

void initJVM()
{
   if (_pVMJvm != NULL)
      return;

   JNIEnv* pVMEnv = NULL;
#ifdef _WIN32
   HMODULE handle = LoadLibraryA(_jrePath.c_str());
#else
   void *handle = dlopen(_jrePath.c_str(), RTLD_NOW);
#endif
   if (handle == NULL)
      throw std::runtime_error("initJVM: unable to load libjvm.");

   JNI_GetCreatedJavaVMs_t JNI_GetCreatedJavaVMs = (JNI_GetCreatedJavaVMs_t) LoadSym(handle, "JNI_GetCreatedJavaVMs");
   if (JNI_GetCreatedJavaVMs == NULL)
      JNI_GetCreatedJavaVMs = (JNI_GetCreatedJavaVMs_t) LoadSym(handle, "JNI_GetCreatedJavaVMs_Impl");
   if (JNI_GetCreatedJavaVMs == NULL)
      throw std::runtime_error("initJVM: unable to find method JNI_GetCreatedJavaVMs.");

   // try to get an already created JVM
   jsize nbVMs = 0;
   JNI_GetCreatedJavaVMs(&_pVMJvm, 1, &nbVMs);
   if (nbVMs == 0)
   {
      // Else : create a new JVM
      setClassPath();
      jint nbOptions = (jint) _options.size();
      JavaVMOption *aOptions = new JavaVMOption[nbOptions];
      for (jint i = 0; i < nbOptions; ++i)
         aOptions[i].optionString = (char*) _options[i].c_str();

      JavaVMInitArgs oVMArgs;
      memset(&oVMArgs, 0, sizeof(oVMArgs));
      oVMArgs.version = JNI_VERSION_1_6;
      oVMArgs.nOptions = nbOptions;
      oVMArgs.options = aOptions;

      JNI_CreateJavaVM_t JNI_CreateJavaVM = (JNI_CreateJavaVM_t) LoadSym(handle, "JNI_CreateJavaVM");
      if (JNI_CreateJavaVM == NULL)
         JNI_CreateJavaVM = (JNI_CreateJavaVM_t) LoadSym(handle, "JNI_CreateJavaVM_Impl");
      if (JNI_CreateJavaVM == NULL)
         throw std::runtime_error("initJVM: unable to find method JNI_CreateJavaVM.");

      jint result = JNI_CreateJavaVM(&_pVMJvm, (void**) &pVMEnv, (void*) &oVMArgs);
      if (result != 0)
      {
         std::ostringstream oss;
         oss << "initJVM: can't create new JVM (" << result << ").";
         throw std::runtime_error(oss.str());
      }

      delete[] aOptions;
   }
}
开发者ID:loicoudot，项目名称:java4cpp-templates，代码行数:55，代码来源:jvm_launcher.cpp



注：本文中的JNI_CreateJavaVM函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

鲜花
握手
雷人
路过
鸡蛋
该文章已有0人参与评论

请发表评论

全部评论

专题导读
More+
上一篇：
C++ JNI_ENV函数代码示例发布时间：2022-05-30
下一篇：
C++ JNI_CHECK_GOTO函数代码示例发布时间：2022-05-30
热门推荐
More+
热门话题
More+
阅读排行榜

扫描微信二维码

查看手机版网站

随时了解更新最新资讯

139-2527-9053

在线客服（服务时间 9:00～18:00）

在线QQ客服
地址：深圳市南山区西丽大学城创智工业园
电邮：jeky_zhao#qq.com
移动电话：139-2527-9053

Powered by 互联科技 X3.4© 2001-2213 极客世界.|Sitemap