JOI_RetCode JavaObjectInterfaceTM::initJVM()
{
jint result;
if ((_tlp_jenv != 0) && (_tlv_jenv_set)) {
return JOI_OK;
}
if (jvm_ == NULL)
{
jsize jvm_count = 0;
// Is there an existing JVM already created?
result = JNI_GetCreatedJavaVMs (&jvm_, 1, &jvm_count);
if (result != JNI_OK)
return JOI_ERROR_CHECK_JVM;
if (jvm_count == 0)
{
// No - create a new one.
result = createJVM();
if (result != JNI_OK)
return JOI_ERROR_CREATE_JVM;
needToDetach_ = false;
return JOI_OK;
}
}
// We found a JVM, can we use it?
result = jvm_->GetEnv((void**) &_tlp_jenv, JNI_VERSION_1_6);
switch (result)
{
case JNI_OK:
break;
case JNI_EDETACHED:
fprintf(stderr,"initJVM: Detached, Try 2 attach\n");
result = jvm_->AttachCurrentThread((void**) &_tlp_jenv, NULL);
if (result != JNI_OK)
{
fprintf(stderr,"initJVM: Error in attaching\n");
return JOI_ERROR_ATTACH_JVM;
}
needToDetach_ = true;
break;
case JNI_EVERSION:
return JOI_ERROR_JVM_VERSION;
break;
default:
return JOI_ERROR_ATTACH_JVM;
break;
}
_tlv_jenv_set = true;
return JOI_OK;
}
jint nativeRouting(const char* obfPath,
jdouble slat, jdouble slon, jdouble elat, jdouble elon) {
JNIEnv* e = createJVM();
print("JVM started %d", e->GetVersion());
jclass objclass = e->FindClass("java/lang/Object");
if(checkException(e)) return -1;
print("Object class found");
jclass c = e->FindClass("net/osmand/router/TestRouting");
if(checkException(e)) return -1;
jmethodID m = e->GetStaticMethodID(c, "calculateRoute", "(Ljava/lang/String;DDDD)V");
if(checkException(e)) return -1;
jstring obfstr = createString(e, obfPath);
e->CallStaticVoidMethod(c, m, obfstr, slat, slon, elat, elon);
if(checkException(e)) return -1;
// vm->DestroyJavaVM();
// globalE = NULL;
// vm = NULL;
return 0;
}
/**
* Initializes the IO subsystem.
*
* @param classPath the class path with which to start the embedded JVM
* @param args extra arguments to pass to the embedded JVM
* @param argc the number of extra arguments in 'args
*/
void CIO_initialize(char *classPath, char** args, int argc) {
/*
* Create the embedded Java VM now
*/
jint createJVM(JavaVM **, void **env, void *args);
JavaVMInitArgs vm_args;
JavaVMOption options[MAX_JVM_ARGS + 1];
char *buf = (char *)malloc(strlen("-Djava.class.path=")+strlen(classPath)+strlen(":hosted-support/classes")+1);
sprintf(buf, "-Djava.class.path=%s%chosted-support%cclasses", classPath, (char)pathSeparatorChar, (char)fileSeparatorChar);
// A version 1.4 Java VM is required
vm_args.version = JNI_VERSION_1_4;
vm_args.options = options;
options[0].optionString = buf;
vm_args.nOptions = 1;
/*
* Disable the JIT as it has stability problems on at least one platform (Solaris)
* and the slow down is not noticeable anyway.
*
* Try it on again. It makes a 20% difference with the suite creator.
* if there is trouble, users can disable from command line:
* -J-Djava.compiler=NONE
*/
/* options[vm_args.nOptions++].optionString = "-Djava.compiler=NONE";*/
/*
* Add command line oprtions.
*/
while (argc-- != 0) {
options[vm_args.nOptions++].optionString = *args;
args++;
}
/*
{
int i;
fprintf(stderr, "Starting embedded JVM with options \"");
for (i = 0; i != vm_args.nOptions; i++) {
fprintf(stderr, "%s ", vm_args.options[i].optionString);
}
fprintf(stderr, "\"\n");
}
*/
createJVM(&jvm, (void**)&JNI_env, &vm_args);
if (JNI_env != null) {
channelIO_clazz = (*JNI_env)->FindClass(JNI_env, "com/sun/squawk/vm/ChannelIO");
jni_assume(channelIO_clazz != null, "Can't find com.sun.squawk.vm.ChannelIO");
channelIO_execute = (*JNI_env)->GetStaticMethodID(JNI_env, channelIO_clazz, "execute", "(IIIIIIIIILjava/lang/Object;Ljava/lang/Object;)I");
jni_assume(channelIO_execute != null, "Couldn't find method: channelIO_execute()");
} else {
fprintf(stderr, "Warning: Error creating Java VM -- I/O subsystem will be disabled\n");
}
}
v8::Local<v8::Value> Java::ensureJvm() {
if(!m_jvm) {
v8::Local<v8::Value> result = createJVM(&this->m_jvm, &this->m_env);
assert(result->IsNull());
return result;
}
return Nan::Null();
}
int main(int argc, char* argv[])
{
SERVICE_TABLE_ENTRY dispatchTable[] = {
{SERVICENAME, serviceMain },
{NULL, NULL }
};
if(argc > 1) {
if(_tcsicmp(_T("-run"), argv[1]) == 0) {
bStandAlone = TRUE;
fillCP();
if (argc > 2) {
if (*(argv[2]+strlen(argv[2])-1) == '\\')
*(argv[2]+strlen(argv[2])-1) = 0;
installDir = _strdup(argv[2]);
}
if (createJVM()) {
run();
}
cleanup();
} else if(_tcsicmp(_T("-install"), argv[1]) == 0 || _tcsicmp(_T("-installa"), argv[1]) == 0) {
// TODO use strstr
// if (strstr(argv[1], _T("-install")) == argv[1])
if (argc < 3) {
usage();
return -1;
}
scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
installService(argc<5?SERVICENAME:argv[4], argc<6?SERVICENAME:argv[5],
argc<7?argv[0]:argv[6], NULL, 0, argv[2], argc<4?NULL:argv[3], argc<8?NULL:argsToLine(argc-7, argv+7),
_tcsicmp(_T("-installa"), argv[1]) == 0?"rogatkin/app/Main":NULL);
CloseServiceHandle(scm);
} else if(_tcsicmp(_T("-uninstall"), argv[1]) == 0) {
scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
unistallService(argc>2?argv[2]:SERVICENAME);
CloseServiceHandle(scm);
} else if(_tcsicmp(_T("-help"), argv[1]) == 0)
usage();
} else {
if (!StartServiceCtrlDispatcher(dispatchTable)) {
logServiceMessage(_T("StartServiceCtrlDispatcher failed."), EVENTLOG_ERROR_TYPE);
}
}
return 0;
}
/* This is called when the service control manager starts the service.
* The service stops when this method returns so there is a wait on an
* event at the end of this method.
*/
void CALLBACK serviceMain(DWORD dwArgc, LPTSTR *lpszArgv) {
if (!fillCP()) {
cleanup();
return;
}
if (!createJVM()) {
cleanup();
return;
}
serviceStatusHandle = RegisterServiceCtrlHandler(
TEXT(SERVICENAME),
(LPHANDLER_FUNCTION)serviceCtrl);
if(!serviceStatusHandle) {
cleanup();
return;
}
serviceStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
serviceStatus.dwServiceSpecificExitCode = 0;
if(!sendStatusToSCMgr(SERVICE_START_PENDING, NO_ERROR, 1, SVC_START_TIMEOUT)) {
cleanup();
return;
}
if(!sendStatusToSCMgr(SERVICE_RUNNING, NO_ERROR, 0, 0)) {
cleanup();
return;
}
run();
if(serviceStatusHandle != 0) {
sendStatusToSCMgr(SERVICE_STOPPED, NO_ERROR, 0, 0);
}
return;
}
JOI_RetCode JavaObjectInterface::initJVM()
{
jint result;
if (jvm_ == NULL)
{
jsize jvm_count = 0;
// Is there an existing JVM already created?
result = JNI_GetCreatedJavaVMs (&jvm_, 1, &jvm_count);
if (result != JNI_OK)
{
GetCliGlobals()->setJniErrorStr(getErrorText(JOI_ERROR_CHECK_JVM));
return JOI_ERROR_CHECK_JVM;
}
if (jvm_count == 0)
{
// No - create a new one.
result = createJVM();
if (result != JNI_OK)
{
GetCliGlobals()->setJniErrorStr(getErrorText(JOI_ERROR_CHECK_JVM));
return JOI_ERROR_CREATE_JVM;
}
needToDetach_ = false;
QRLogger::log(CAT_SQL_HDFS_JNI_TOP, LL_DEBUG, "Created a new JVM.");
}
char *jniHandleCapacityStr = getenv("TRAF_JNIHANDLE_CAPACITY");
if (jniHandleCapacityStr != NULL)
jniHandleCapacity_ = atoi(jniHandleCapacityStr);
if (jniHandleCapacity_ == 0)
jniHandleCapacity_ = TRAF_DEFAULT_JNIHANDLE_CAPACITY;
}
if (jenv_ == NULL)
{
// We found a JVM, can we use it?
result = jvm_->GetEnv((void**) &jenv_, JNI_VERSION_1_6);
switch (result)
{
case JNI_OK:
QRLogger::log(CAT_SQL_HDFS_JNI_TOP, LL_DEBUG, "Attached to an existing JVM.");
break;
case JNI_EDETACHED:
result = jvm_->AttachCurrentThread((void**) &jenv_, NULL);
if (result != JNI_OK)
return JOI_ERROR_ATTACH_JVM;
needToDetach_ = true;
QRLogger::log(CAT_SQL_HDFS_JNI_TOP, LL_DEBUG, "Attached to an existing JVM from another thread.");
break;
case JNI_EVERSION:
QRLogger::log(CAT_SQL_HDFS_JNI_TOP, LL_DEBUG, "Attaching to a JVM of the wrong version.");
GetCliGlobals()->setJniErrorStr(getErrorText(JOI_ERROR_JVM_VERSION));
return JOI_ERROR_JVM_VERSION;
break;
default:
QRLogger::log(CAT_SQL_HDFS_JNI_TOP, LL_DEBUG, "Unknown error Attaching to an existing JVM.");
GetCliGlobals()->setJniErrorStr(getErrorText(JOI_ERROR_ATTACH_JVM));
return JOI_ERROR_ATTACH_JVM;
break;
}
}
jclass lJavaClass;
if (gThrowableClass == NULL)
{
lJavaClass = jenv_->FindClass("java/lang/Throwable");
if (lJavaClass != NULL)
{
gThrowableClass = (jclass)jenv_->NewGlobalRef(lJavaClass);
jenv_->DeleteLocalRef(lJavaClass);
gGetStackTraceMethodID = jenv_->GetMethodID(gThrowableClass,
"getStackTrace",
"()[Ljava/lang/StackTraceElement;");
gThrowableToStringMethodID = jenv_->GetMethodID(gThrowableClass,
"toString",
"()Ljava/lang/String;");
}
}
if (gStackTraceClass == NULL)
{
lJavaClass = (jclass)jenv_->FindClass("java/lang/StackTraceElement");
if (lJavaClass != NULL)
{
gStackTraceClass = (jclass)jenv_->NewGlobalRef(lJavaClass);
jenv_->DeleteLocalRef(lJavaClass);
gStackFrameToStringMethodID = jenv_->GetMethodID(gStackTraceClass,
"toString",
"()Ljava/lang/String;");
}
}
return JOI_OK;
}
/**
* Starts the Java virual machine.
*
* @return true if successful, false otherwise
*/
int startJVM()
{
JavaVMInitArgs vm_args;
JavaVMOption *options;
jint res;
JNIEnv *env;
jclass clazz;
jmethodID method;
#ifdef WIN32
HINSTANCE hVM;
#else
void *libVM;
#endif
if (maxHeap == NULL)
{
options = (JavaVMOption *) malloc(sizeof(JavaVMOption) * 2);
}
else
{
options = (JavaVMOption *) malloc(sizeof(JavaVMOption) * 3);
}
/* Set up Java options. */
options[0].optionString = classPath; /* Sets the Java classpath. */
options[1].optionString = "-Xrs"; /* Set Java to not use a signal handler, (we use our own). */
if (maxHeap != NULL)
{
options[2].optionString = maxHeap;
}
vm_args.options = options;
vm_args.nOptions = maxHeap == NULL ? 2 : 3;
vm_args.ignoreUnrecognized = JNI_FALSE;
vm_args.version = JNI_VERSION_1_4;
/* Load the JVM library and find the JNI_CreateJavaVM function. */
#ifdef WIN32
SetErrorMode(SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS);
hVM = LoadLibrary(jvmSo);
if (hVM == NULL)
{
char *pch = jvmSo, *bch = NULL, *javaBin;
/* Add the Java installation bin directory to the DLL search path so msvcr71.dll
* can be loaded when java.dll is loaded. See Java bug #6509291. */
while ((pch = strstr(pch, "bin")) != NULL) bch = pch++;
if (bch == NULL)
{
logMessage("ERROR: Unable to find 'bin/' directory in the Java installaion directory. This is "
"most likely a bug caused by a change in the Java installation layout. Please "
"report this with the Java version in use.");
return 0;
}
javaBin = (char *) malloc(bch - jvmSo + 5);
memset(javaBin, 0, bch - jvmSo + 5);
strncpy(javaBin, jvmSo, bch - jvmSo);
strcat(javaBin, "bin");
logMessage("NORMAL: Adding '%s' to the DLL search path.\n");
SetDllDirectory(javaBin);
hVM = LoadLibraryEx(jvmSo, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
if (hVM == NULL)
{
logMessage("ERROR: Unable to load library %s, error code %i.\n", jvmSo, GetLastError());
return 0;
}
}
createJVM = (CreateJavaVM)GetProcAddress(hVM, "JNI_CreateJavaVM");
#else
libVM = dlopen(jvmSo, RTLD_LAZY);
if (libVM == NULL)
{
logMessage("ERROR: Unable to load library %s.\n", jvmSo);
perror("Error loading JVM library");
return 0;
}
createJVM = (CreateJavaVM)dlsym(libVM, "JNI_CreateJavaVM");
#endif
/* Create the JVM. */
res = createJVM(&vm, (void **)&env, &vm_args);
if (res < 0)
{
logMessage("ERROR: Failed to create JVM, response code is %i.\n", res);
return 0;
}
logMessage("NORMAL: Successfully created Java virtual machine.\n");
/* Find the start up class. */
if ((clazz = (*env)->FindClass(env, CLASS_NAME)) == NULL)
{
logMessage("ERROR: Unable to find class %s.\n", CLASS_NAME);
return 0;
}
/* Find start up method and invoke it. */
if ((method = (*env)->GetStaticMethodID(env, clazz, STARTUP_METHOD, "()V")) == NULL)
{
logMessage("BUG: Unable to find method %s in class %s.\n", STARTUP_METHOD, CLASS_NAME);
return 0;
}
(*env)->CallStaticVoidMethod(env, clazz, method, NULL);
if ((*env)->ExceptionCheck(env))
{
logMessage("BUG: Exception thrown starting up rig client (called method %s on %s).\n", STARTUP_METHOD, CLASS_NAME);
return 0;
}
return 1;
}
