int et_event_setendian(et_event *pe, int endian)
{
int err, myendian;
if ( (err = etNetLocalByteOrder(&myendian)) != ET_OK) {
return err;
}
if ((endian != ET_ENDIAN_BIG) &&
(endian != ET_ENDIAN_LITTLE) &&
(endian != ET_ENDIAN_LOCAL) &&
(endian != ET_ENDIAN_NOTLOCAL) &&
(endian != ET_ENDIAN_SWITCH)) {
return ET_ERROR;
}
if ((endian == ET_ENDIAN_BIG) || (endian == ET_ENDIAN_LITTLE)) {
pe->byteorder = (myendian == endian) ? 0x04030201 : 0x01020304;
}
else if (endian == ET_ENDIAN_LOCAL) {
pe->byteorder = 0x04030201;
}
else if (endian == ET_ENDIAN_NOTLOCAL) {
pe->byteorder = 0x01020304;
}
else {
pe->byteorder = ET_SWAP32(pe->byteorder);
}
return ET_OK;
}
int et_event_getendian(et_event *pe, int *endian)
{
int err, myendian, notmyendian;
if (endian == NULL) {
return ET_ERROR;
}
if ( (err = etNetLocalByteOrder(&myendian)) != ET_OK) {
return err;
}
notmyendian = (myendian == ET_ENDIAN_BIG) ? ET_ENDIAN_LITTLE : ET_ENDIAN_BIG;
*endian = (pe->byteorder == 0x04030201) ? myendian : notmyendian;
return ET_OK;
}
/*
* Class: org_jlab_coda_et_EtJniAccess
* Method: openLocalEtSystem
* Signature: (Ljava/lang/String;)J
*/
JNIEXPORT void JNICALL Java_org_jlab_coda_et_EtJniAccess_openLocalEtSystem
(JNIEnv *env, jobject thisObj, jstring fileName)
{
int err;
const char* mappedFile;
et_sys_id id; /* (void *) */
et_openconfig openconfig;
jclass clazz, class1, classEventImpl;
jmethodID mid;
/* get C string from java arg */
mappedFile = (*env)->GetStringUTFChars(env, fileName, NULL);
if (mappedFile == NULL) {
/* pending exception already thrown, need to return for it to complete */
(*env)->ReleaseStringUTFChars(env, fileName, mappedFile);
return;
}
/* open ET system */
et_open_config_init(&openconfig);
et_open_config_sethost(openconfig, ET_HOST_LOCAL); /* must be local host */
err = et_open(&id, mappedFile, openconfig);
if (err != ET_OK) {
if (err == ET_ERROR_TIMEOUT) {
clazz = (*env)->FindClass(env, "org/jlab/coda/et/exception/EtTimeoutException");
}
else {
clazz = (*env)->FindClass(env, "org/jlab/coda/et/exception/EtException");
}
(*env)->ThrowNew(env, clazz, "openLocalEtSystem: cannot open ET system in native code");
return;
}
et_open_config_destroy(openconfig);
/* store byte order of local system */
err = etNetLocalByteOrder(&localByteOrder);
if (err != ET_OK) {
localByteOrder = ET_ENDIAN_LITTLE;
}
/* store et id in object by calling this native method */
class1 = (*env)->GetObjectClass(env, thisObj);
mid = (*env)->GetMethodID(env, class1, "setLocalEtId", "(J)V");
(*env)->CallVoidMethod(env, thisObj, mid, (jlong)id);
/*******************************************/
/* cache objects for efficient, future use */
/*******************************************/
classEventImpl = (*env)->FindClass(env, "org/jlab/coda/et/EtEventImpl");
eventImplClass = (*env)->NewGlobalRef(env, classEventImpl);
/* find id's of all the fields that we'll read/write directly to */
fid[0] = (*env)->GetFieldID(env, classEventImpl, "id", "I");
fid[1] = (*env)->GetFieldID(env, classEventImpl, "length", "I");
fid[2] = (*env)->GetFieldID(env, classEventImpl, "byteOrder", "I");
fid[3] = (*env)->GetFieldID(env, classEventImpl, "control", "[I");
/* methods to get event's enum values */
getPriorityVal = (*env)->GetMethodID(env, classEventImpl, "getPriorityValue", "()I");
getDataStatusVal = (*env)->GetMethodID(env, classEventImpl, "getDataStatusValue", "()I");
/* get id's of a few different constructors */
constrMethodId2 = (*env)->GetMethodID(env, classEventImpl, "<init>", "(IIIIIIIIZLjava/nio/ByteBuffer;)V");
constrMethodId3 = (*env)->GetMethodID(env, classEventImpl, "<init>", "(IIIIIIIIII[IZLjava/nio/ByteBuffer;)V");
if (debug) printf("\nopenLocalEtSystem (native) : done, opened ET system\n\n");
}
