[lttv.git] / ltt / jni_interface.c


// !! Important to get consistent size_t type
#define _FILE_OFFSET_BITS 64

#include <jni.h>

#include <ltt/trace.h>
#include <ltt/time.h>
#include <ltt/marker.h>
#include <glib.h>

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>

// *** FIXME ***
// *** HACK ***
// We've got hell of a problem passing "unsigned int64" to java, as there is no equivalent type
//   The closer we can use is "long" which is signed, so only 32 (or 63?) bits are valid
//   Plus, even if we are within the "32 bits" capacity, java sometime screw itself trying to convert "unsigned 64 -> signed 64"
//   This happen especially often when RETURNING a jlong
//   So when returning a jlong, we should convert it like this : "unsigned 64"->"signed 64"->jlong
#define CONVERT_UINT64_TO_JLONG(n) (jlong)(gint64)(n)
#define CONVERT_INT64_TO_JLONG(n) (jlong)(gint64)(n)

// To ease calcul involving nano
#define BILLION 1000000000


#if __WORDSIZE == 64
        #define CONVERT_JLONG_TO_PTR(p) (p)
        // Define the "gint" type we should use for pointer.
        #define GINT_TYPE_FOR_PTR gint32
#else
        // Conversion to int first to save warning
        #define CONVERT_JLONG_TO_PTR(p) (int)(p)
        #define CONVERT_PTR_TO_JLONG(p) (jlong)(int)(p)
        // Define the "gint" type we should use for pointer.
        #define GINT_TYPE_FOR_PTR gint64
#endif

// Structure to encapsulate java_data to pass as arguments
struct java_calling_data
{
    JNIEnv* env;
    jobject jobj;
};

// *** TODO **
// Find a better way! This is ugly!
struct addMarkersArgs
{ 
    struct java_calling_data* java_args;
    struct marker_data* mdata;
};


// ### COMMON Methods ###
// #
// JNI method to call printf from the java side
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_Jni_1C_1Common_ltt_1printC(JNIEnv* env, jobject jobj, jstring new_string)
{
    printf( (*env)->GetStringUTFChars(env, new_string, 0) );
}

// #
// ####


// ### TRACE methods ###
// #
// JNI mapping of   < LttTrace *ltt_trace_open(const gchar *pathname)  > (trace.h)
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1openTrace(JNIEnv* env, jobject jobj, jstring pathname) {
        const char* c_pathname = (*env)->GetStringUTFChars(env, pathname, 0);
        LttTrace* newPtr = ltt_trace_open( c_pathname );
        
        (*env)->ReleaseStringUTFChars(env, pathname, c_pathname);
        
        return CONVERT_PTR_TO_JLONG(newPtr); 
}

// JNI mapping of  < void ltt_trace_close(LttTrace *t)  > (trace.h)
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1closeTrace(JNIEnv* env, jobject jobj, jlong trace_ptr){
        
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        ltt_trace_close(newPtr);
}

// Get the tracepath
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getTracepath(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (*env)->NewStringUTF(env, g_quark_to_string( newPtr->pathname) );
}


// Get of num_cpu
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getCpuNumber(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jint)newPtr->num_cpu;
}

// Get of arch_type
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getArchType(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jlong)newPtr->arch_type;
}

// Get of arch_variant 
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getArchVariant(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jlong)newPtr->arch_variant;
}

// Get of arch_size
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getArchSize(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jshort)newPtr->arch_size;
}

// Get of ltt_major_version
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getLttMajorVersion(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jshort)newPtr->ltt_major_version;
}

// Get of ltt_minor_version
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getLttMinorVersion(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jshort)newPtr->ltt_minor_version;
}

// Get of flight_recorder
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getFlightRecorder(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jshort)newPtr->flight_recorder;
}

// Get of freq_scale
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getFreqScale(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return (jlong)newPtr->freq_scale;
}

// Get of start_freq
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getStartFreq(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->start_freq);
}

// Get of start_tsc
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getStartTimestampCurrentCounter(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->start_tsc);
}

// Get of start_monotonic
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getStartMonotonic(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->start_monotonic);
}

// Access to start_time
// Note that we are calling the setTimeFromC function in Jaf_Time from here
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1feedStartTime(JNIEnv* env, jobject jobj, jlong trace_ptr, jobject time_jobj) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        jclass accessClass = (*env)->GetObjectClass(env, time_jobj);
        jmethodID accessFunction = (*env)->GetMethodID(env, accessClass, "setTimeFromC", "(J)V");
        
        jlong fullTime = (CONVERT_UINT64_TO_JLONG(newPtr->start_time.tv_sec)*BILLION) + CONVERT_UINT64_TO_JLONG(newPtr->start_time.tv_nsec);
        
        (*env)->CallVoidMethod(env, time_jobj, accessFunction, fullTime );
}

// Access to start_time_from_tsc
// Note that we are calling the setTimeFromC function in Jaf_Time from here
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1feedStartTimeFromTimestampCurrentCounter(JNIEnv* env, jobject jobj, jlong trace_ptr, jobject time_jobj) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        jclass accessClass = (*env)->GetObjectClass(env, time_jobj);
        jmethodID accessFunction = (*env)->GetMethodID(env, accessClass, "setTimeFromC", "(J)V");
        
        jlong fullTime = (CONVERT_UINT64_TO_JLONG(newPtr->start_time_from_tsc.tv_sec)*BILLION) + CONVERT_UINT64_TO_JLONG(newPtr->start_time_from_tsc.tv_nsec);
        
        (*env)->CallVoidMethod(env, time_jobj, accessFunction, fullTime);
}


// g_list_data function for the "for_each" call in Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getAllTracefiles
void g_datalist_foreach_addTracefilesOfTrace(GQuark name, gpointer data, gpointer user_data) {
        struct java_calling_data* args = (struct java_calling_data*)user_data;
        
        jclass accessClass = (*args->env)->GetObjectClass(args->env, args->jobj);
        jmethodID accessFunction = (*args->env)->GetMethodID(args->env, accessClass, "addTracefileFromC", "(Ljava/lang/String;J)V");
        
        GArray* group = (GArray*)data;
        LttTracefile* tracefile;
        jlong newPtr;
        
        unsigned int i;
        for (i=0; i<group->len; i++) {
                tracefile = &g_array_index(group, LttTracefile, i);
                
                newPtr = CONVERT_PTR_TO_JLONG(tracefile);
                
                (*args->env)->CallVoidMethod(args->env, args->jobj, accessFunction, (*args->env)->NewStringUTF(args->env, g_quark_to_string(tracefile->name) ), newPtr );
        }
}

// Function to fill up the java map with the event type found in tracefile (the name)
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1getAllTracefiles(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        struct java_calling_data args = { env, jobj };
        
        g_datalist_foreach(&newPtr->tracefiles, &g_datalist_foreach_addTracefilesOfTrace, &args);
}


// Function to print the content of a tracefile
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTrace_ltt_1printTrace(JNIEnv* env, jobject jobj, jlong trace_ptr) {
        
        LttTrace* newPtr = (LttTrace*)CONVERT_JLONG_TO_PTR(trace_ptr);
        
        printf("pathname                : %s\n"     ,g_quark_to_string(newPtr->pathname) );
        printf("num_cpu                 : %u\n"     ,(unsigned int)(newPtr->num_cpu) );
        printf("arch_type               : %u\n"     ,(unsigned int)(newPtr->arch_type) );
        printf("arch_variant            : %u\n"     ,(unsigned int)(newPtr->arch_variant) );
        printf("arch_size               : %u\n"     ,(unsigned short)(newPtr->arch_size) );
        printf("ltt_major_version       : %u\n"     ,(unsigned short)(newPtr->ltt_major_version) );
        printf("ltt_minor_version       : %u\n"     ,(unsigned short)(newPtr->ltt_minor_version) );
        printf("flight_recorder         : %u\n"     ,(unsigned short)(newPtr->flight_recorder) );
        printf("freq_scale              : %u\n"     ,(unsigned int)(newPtr->freq_scale) );
        printf("start_freq              : %lu\n"    ,(long unsigned int)(newPtr->start_freq) );
        printf("start_tsc               : %lu\n"    ,(long unsigned int)(newPtr->start_tsc) );
        printf("start_monotonic         : %lu\n"    ,(long unsigned int)(newPtr->start_monotonic) );
        printf("start_time ptr          : 0x%p\n"   ,&newPtr->start_time);
        printf("   tv_sec               : %lu\n"    ,(long unsigned int)(newPtr->start_time.tv_sec) );
        printf("   tv_nsec              : %lu\n"    ,(long unsigned int)(newPtr->start_time.tv_nsec) );
        printf("start_time_from_tsc ptr : 0x%p\n"   ,&newPtr->start_time_from_tsc);
        printf("   tv_sec               : %lu\n"    ,(long unsigned int)(newPtr->start_time_from_tsc.tv_sec) );
        printf("   tv_nsec              : %lu\n"    ,(long unsigned int)(newPtr->start_time_from_tsc.tv_nsec) );
        printf("tracefiles ptr          : 0x%p\n"   ,newPtr->tracefiles);
        printf("\n");
}
// #
// ###


// ### TRACEFILE methods ###
// #
// Get of cpu_online
JNIEXPORT jboolean JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getIsCpuOnline(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jboolean)newPtr->cpu_online;
}

// Get of long_name
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getTracefilepath(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (*env)->NewStringUTF(env, g_quark_to_string(newPtr->long_name) );
}

// Get of name
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getTracefilename(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (*env)->NewStringUTF(env, g_quark_to_string(newPtr->name) );
}

// Get of cpu_num
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getCpuNumber(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->cpu_num;
}

// Get of tid
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getTid(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->tid;
}

// Get of pgid
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getPgid(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->pgid;
}

// Get of creation
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getCreation(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->creation);
}

// Get of trace
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getTracePtr(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_PTR_TO_JLONG(newPtr->trace);
}

// Get of mdata
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getMarkerDataPtr(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_PTR_TO_JLONG(newPtr->mdata);
}

// Get of fd
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getCFileDescriptor(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jint)newPtr->fd;
}

// Get of file_size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getFileSize(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->file_size);
}

// Get of num_blocks
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getBlockNumber(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->num_blocks;
}

// Get of reverse_bo
JNIEXPORT jboolean JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getIsBytesOrderReversed(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jboolean)newPtr->reverse_bo;
}

// Get of float_word_order
JNIEXPORT jboolean JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getIsFloatWordOrdered(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jboolean)newPtr->float_word_order;
}

// Get of alignment
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getAlignement(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->alignment);
}

// Get of buffer_header_size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getBufferHeaderSize(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->buffer_header_size);
}

// Get of tscbits
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getBitsOfCurrentTimestampCounter(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jint)newPtr->tscbits;
}

// Get of eventbits
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getBitsOfEvent(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jint)newPtr->eventbits;
}

// Get of tsc_mask
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getCurrentTimestampCounterMask(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->tsc_mask);
}

// Get of tsc_mask_next_bit
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getCurrentTimestampCounterMaskNextBit(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->tsc_mask_next_bit);
}

// Get of events_lost
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getEventsLost(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->events_lost;
}

// Get of subbuf_corrupt
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getSubBufferCorrupt(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->subbuf_corrupt;
}

// Get of event
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getEventPtr(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_PTR_TO_JLONG(&newPtr->event);
}

// Get of buffer
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getBufferPtr(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return CONVERT_PTR_TO_JLONG(&newPtr->buffer);
}

// Get of buf_size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getBufferSize(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        return (jlong)newPtr->buf_size;
}


// g_list_data function for the "for_each" call in Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getAllMarkers
void g_hash_table_foreach_addMarkersOfTracefile(gpointer key, gpointer data, gpointer user_data) {
        struct addMarkersArgs* args = (struct addMarkersArgs*)user_data;
        struct java_calling_data* jargs = (struct java_calling_data*)args->java_args;
        
        jclass accessClass = (*jargs->env)->GetObjectClass(jargs->env, jargs->jobj);
        jmethodID accessFunction = (*jargs->env)->GetMethodID(jargs->env, accessClass, "addMarkersFromC", "(IJ)V");
        
        unsigned long marker_id = (unsigned long)data;
        
        // The hash table store an ID... we will use the ID to access the array.
        GArray* marker = args->mdata->markers;
        struct marker_info* newPtr = &g_array_index(marker, struct marker_info, marker_id);
        
        (*jargs->env)->CallVoidMethod(jargs->env, jargs->jobj, accessFunction, marker_id, CONVERT_PTR_TO_JLONG(newPtr) );
}

// Function to fill up the java map with the event type found in tracefile (the name)
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1getAllMarkers(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        // *** TODO ***
        // Find a better way! This is ugly!
        struct java_calling_data java_args = { env, jobj };
        struct addMarkersArgs args = { &java_args, newPtr->mdata };
        
        g_hash_table_foreach( newPtr->mdata->markers_hash, &g_hash_table_foreach_addMarkersOfTracefile,  &args);
}


// Function to print the content of a tracefile
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniTracefile_ltt_1printTracefile(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        printf("cpu_online              : %i\n"     ,(int)newPtr->cpu_online);
        printf("long_name               : %s\n"     ,g_quark_to_string(newPtr->long_name));
        printf("name                    : %s\n"     ,g_quark_to_string(newPtr->name));
        printf("cpu_num                 : %u\n"     ,(unsigned int)(newPtr->cpu_num));
        printf("tid                     : %u\n"     ,(unsigned int)(newPtr->tid));
        printf("pgid                    : %u\n"     ,(unsigned int)(newPtr->pgid));
        printf("creation                : %lu\n"    ,(long unsigned int)(newPtr->creation));
        printf("trace ptr               : 0x%p\n"   ,newPtr->trace);
        printf("marker ptr              : 0x%p\n"   ,newPtr->mdata);
        printf("fd                      : %i\n"     ,(int)(newPtr->fd));
        printf("file_size               : %u\n"     ,(unsigned int)(newPtr->file_size));
        printf("num_blocks              : %u\n"     ,(unsigned int)(newPtr->num_blocks));
        printf("reverse_bo              : %i\n"     ,(int)newPtr->reverse_bo);
        printf("float_word_order        : %i\n"     ,(int)newPtr->float_word_order);
        printf("alignment               : %i\n"     ,(int)newPtr->alignment);
        printf("buffer_header_size      : %i\n"     ,(int)newPtr->buffer_header_size);
        printf("tscbits                 : %u\n"     ,(unsigned short)newPtr->tscbits);
        printf("eventbits               : %u\n"     ,(unsigned short)newPtr->eventbits);
        printf("tsc_mask                : %lu\n"    ,(long unsigned int)newPtr->tsc_mask);
        printf("tsc_mask_next_bit       : %lu\n"    ,(long unsigned int)newPtr->tsc_mask_next_bit);
        printf("events_lost             : %u\n"     ,(unsigned int)newPtr->events_lost);
        printf("subbuf_corrupt          : %u\n"     ,(unsigned int)newPtr->subbuf_corrupt);
        printf("event ptr               : 0x%p\n"   ,&newPtr->event);
        printf("buffer ptr              : 0x%p\n"   ,&newPtr->buffer);
        printf("buf_size                : %i\n"     ,(unsigned int)newPtr->buf_size);
        printf("\n");
}
// #
// ###


// ### EVENT methods ###
// #

// Method to get the read status
//    This method will read the next event and then seek back its initial position
//    Lttv assume that every tracefile have at least 1 event, but we have not guarantee after this one.
//    We will read the next event and return the status of that read
//    We will then seek back to our initial position
//    Note : this method is expensive and should not be used too often
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1positionToFirstEvent(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* tracefilePtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        // Ask ltt to read the next events on the given tracefiles
        // Returned value can be :  
        //  0               if everything went fine (EOK)
        //  ERANGE  = 34    out of range, back to last event (might be system dependent?)
        //  EPERM   = 1     error while reading              (might be system dependent?)
        
        
        // Seek to the start time... this will also read the first event, as we want.
        int returnedValue = ltt_tracefile_seek_time(tracefilePtr, ((struct LttTrace)*(tracefilePtr->trace)).start_time_from_tsc);
        
        return (jint)returnedValue;
}

// Method to read next event
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1readNextEvent(JNIEnv* env, jobject jobj, jlong tracefile_ptr) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        // Ask ltt to read the next events on the given tracefiles
        // Returned value can be :  
        //  0               if everything went fine (EOK)
        //  ERANGE  = 34    out of range, back to last event (might be system dependent?)
        //  EPERM   = 1     error while reading              (might be system dependent?)
        
        
        // *** FIXME ***
        // This might fail on the FIRST event, as the timestamp before the first read is uninitialized
        //    However, LTT make the assumption that all tracefile have AT LEAST one event, so we got to run with it
        //
        // Save "last time" before moving, to be able to get back if needed
        LttTime lastTime = newPtr->event.event_time;
        
        int returnedValue = ltt_tracefile_read(newPtr);
        
        // According to Ltt documentation, we need to get back to beginning after an error
        if ( returnedValue != 0 ) {
                ltt_tracefile_seek_time(newPtr, lastTime);
        }
        
        return (jint)returnedValue;
}

// Method to seek to a certain event
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1seekEvent(JNIEnv* env, jobject jobj, jlong tracefile_ptr, jobject time_jobj) {
        LttTracefile* newPtr = (LttTracefile*)CONVERT_JLONG_TO_PTR(tracefile_ptr);
        
        guint64 fullTime = 0;
        
        jclass accessClass = (*env)->GetObjectClass(env, time_jobj);
        jmethodID getTimeFunction = (*env)->GetMethodID(env, accessClass, "getTime", "()J");
        fullTime = (*env)->CallLongMethod(env, time_jobj, getTimeFunction);
        
        // *** HACK ***
        // Conversion from jlong -> C long seems to be particularly sloppy
        // Depending how and where (inlined a function or as a single operation) we do this, we might end up with wrong number
        //    The following asignation of guint64 seems to work well.
        // MAKE SURE TO PERFORM SEVERAL TESTS IF YOU CHANGE THIS.
        guint64 seconds = fullTime/BILLION;
        guint64 nanoSeconds = fullTime%BILLION;
        
        LttTime seekTime = { (unsigned long)seconds, (unsigned long)nanoSeconds };
        
        // Ask ltt to read the next events on the given tracefiles
        // Returned value can be :  
        //  0               if everything went fine (EOK)
        //  ERANGE  = 34    out of range, back to last event (might be system dependent?)
        //  EPERM   = 1     error while reading              (might be system dependent?)
        
        int returnedValue = ltt_tracefile_seek_time(newPtr, seekTime);
        return (jint)returnedValue;
}

// Get of tracefile
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getTracefilePtr(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return CONVERT_PTR_TO_JLONG(newPtr->tracefile);
}

// Get of block
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getBlock(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jlong)newPtr->block;
}

// Get of offset
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getOffset(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jlong)newPtr->offset;
}

// Get of tsc
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getCurrentTimestampCounter(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->tsc);
}

// Get of timestamp
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getTimestamp(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jlong)newPtr->timestamp;
}

// Get of event_id
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getEventMarkerId(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jint)newPtr->event_id;
}

// Get of event_time
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1feedEventTime(JNIEnv* env, jobject jobj, jlong event_ptr, jobject time_jobj) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        jclass accessClass = (*env)->GetObjectClass(env, time_jobj);
        jmethodID accessFunction = (*env)->GetMethodID(env, accessClass, "setTimeFromC", "(J)V");
        
        jlong fullTime = (CONVERT_UINT64_TO_JLONG(newPtr->event_time.tv_sec)*BILLION) + CONVERT_UINT64_TO_JLONG(newPtr->event_time.tv_nsec);
        
        (*env)->CallVoidMethod(env, time_jobj, accessFunction, fullTime);
}

// Access method to the data
// The data are in "byte" form
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getDataContent(JNIEnv* env, jobject jobj, jlong event_ptr, jlong data_size, jbyteArray dataArray) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        (*env)->SetByteArrayRegion(env, dataArray, 0, (jsize)data_size, newPtr->data);
}

// Get of data_size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getEventDataSize(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jlong)newPtr->data_size;
}

// Get of event_size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getEventSize(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jlong)newPtr->event_size;
}

// Get of count
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getCount(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return (jint)newPtr->count;
}

// Get of overflow_nsec
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1getOverflowNanoSeconds(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->overflow_nsec);
}


// Function to print the content of a event
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniEvent_ltt_1printEvent(JNIEnv* env, jobject jobj, jlong event_ptr) {
        LttEvent* newPtr = (LttEvent*)CONVERT_JLONG_TO_PTR(event_ptr);
        
        printf("tracefile               : 0x%p\n",(void*)newPtr->tracefile );
        printf("block                   : %u\n"  ,(unsigned int)newPtr->block );
        printf("offset                  : %u\n"  ,(unsigned int)newPtr->offset );
        printf("tsc                     : %lu\n" ,(long unsigned int)newPtr->tsc );
        printf("timestamp               : %u\n"  ,(unsigned int)newPtr->timestamp );
        printf("event_id                : %u\n"  ,(unsigned short)newPtr->event_id );
        printf("event_time              : 0x%p\n",(void*) &newPtr->event_time );
        printf("   sec                  : %lu\n" ,(long unsigned int)(newPtr->event_time.tv_sec) );
        printf("   nsec                 : %lu\n" ,(long unsigned int)(newPtr->event_time.tv_nsec) );
        printf("data                    : 0x%p\n",(void*) newPtr->data );
        printf("data_size               : %u\n"  ,(unsigned int)newPtr->data_size );
        printf("event_size              : %u\n"  ,(unsigned int)newPtr->event_size );
        printf("count                   : %d\n"  ,(int)newPtr->count );
        printf("overflow_nsec           : %ld\n" ,(long)newPtr->overflow_nsec );
        printf("\n");
}
// #
// ###


// ### MARKER method ###
// #

// Get of name
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getName(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (*env)->NewStringUTF(env, g_quark_to_string(newPtr->name));
}

// Get of format
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getFormatOverview(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (*env)->NewStringUTF(env, newPtr->format);
}

// Get of size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getSize(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jlong)newPtr->size;
}

// Method to get all markerField pointers
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getAllMarkerFields(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        jclass accessClass = (*env)->GetObjectClass(env, jobj);
        jmethodID accessFunction = (*env)->GetMethodID(env, accessClass, "addMarkerFieldFromC", "(Ljava/lang/String;J)V");
        
        GArray* field_array = (GArray*)newPtr->fields;
        struct marker_field* field;
        jlong marker_field_ptr;
        
        unsigned int i;
        for (i=0; i<field_array->len; i++) {
                field = &g_array_index(field_array, struct marker_field, i);
                
                marker_field_ptr = CONVERT_PTR_TO_JLONG(field);
                
                (*env)->CallVoidMethod(env, jobj, accessFunction, (*env)->NewStringUTF(env, g_quark_to_string(field->name) ), marker_field_ptr );
        }
}


// Get of largest_align
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getLargestAlign(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jshort)newPtr->largest_align;
}

// Get of int_size
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getIntSize(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jshort)newPtr->int_size;
}

// Get of long_size
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getLongSize(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jshort)newPtr->long_size;
}

// Get of pointer_size
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getPointerSize(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jshort)newPtr->pointer_size;
}

// Get of size_t_size
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getSize_1tSize(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jshort)newPtr->size_t_size;
}

// Get of alignment
JNIEXPORT jshort JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getAlignement(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return (jshort)newPtr->alignment;
}

// Get of next
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1getNextMarkerPtr(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        return CONVERT_PTR_TO_JLONG(newPtr->next);
}


// Function to print the content of a marker
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarker_ltt_1printMarker(JNIEnv* env, jobject jobj, jlong marker_info_ptr) {
        struct marker_info* newPtr = (struct marker_info*)CONVERT_JLONG_TO_PTR(marker_info_ptr);
        
        printf("name          : %s\n"  ,g_quark_to_string(newPtr->name) );
        printf("format        : %s\n"  ,newPtr->format );
        printf("size          : %li\n" ,(long int)newPtr->size );
        printf("largest_align : %u\n"  ,(unsigned short)newPtr->largest_align );
        printf("fields        : 0x%p\n",newPtr->fields );
        printf("int_size      : %u\n"  ,(unsigned short)newPtr->int_size );
        printf("long_size     : %u\n"  ,(unsigned short)newPtr->long_size );
        printf("pointer_size  : %u\n"  ,(unsigned short)newPtr->pointer_size );
        printf("size_t_size   : %u\n"  ,(unsigned short)newPtr->size_t_size );
        printf("alignment     : %u\n"  ,(unsigned short)newPtr->alignment );
        printf("next          : 0x%p\n",newPtr->next );
        printf("\n");
}

// #
// ###


// ### MARKERFIELD Method
// #

// Get of name
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getField(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return (*env)->NewStringUTF(env, g_quark_to_string(newPtr->name));
}

// Get of type
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getType(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return (jint)newPtr->type;
}

// Get of offset
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getOffset(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->offset);
}

// Get of size
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getSize(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->size);
}

// Get of alignment
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getAlignment(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->alignment);
}

// Get of attributes
JNIEXPORT jlong JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getAttributes(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return CONVERT_UINT64_TO_JLONG(newPtr->attributes);
}

// Get of static_offset
JNIEXPORT jint JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getStatic_1offset(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return (jint)newPtr->static_offset;
}

// Get of fmt
JNIEXPORT jstring JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1getFormat(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        return (*env)->NewStringUTF(env, newPtr->fmt->str);
}

// Function to print the content of a marker_field
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniMarkerField_ltt_1printMarkerField(JNIEnv* env, jobject jobj, jlong marker_field_ptr) {
        struct marker_field* newPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        printf("name          : %s\n"  ,g_quark_to_string(newPtr->name) );
        printf("type          : %i\n"  ,(int)newPtr->type );
        printf("offset        : %lu\n" ,(long unsigned int)newPtr->offset );
        printf("size          : %lu\n" ,(long unsigned int)newPtr->size );
        printf("alignment     : %lu\n" ,(long unsigned int)newPtr->alignment );
        printf("attributes    : %lu\n" ,(long unsigned int)newPtr->attributes );
        printf("static_offset : %i\n"  ,(int)newPtr->static_offset );
        printf("fmt           : %s\n"  ,newPtr->fmt->str );
        printf("\n");
}

// #
// ###


// ### PARSER Method
// #

// This function will do the actual parsing
//      It will then call java to assign the parsed data to the object "javaObj"
JNIEXPORT void JNICALL Java_org_eclipse_linuxtools_lttng_jni_JniParser_ltt_1getParsedData(JNIEnv* env, jclass accessClass, jobject javaObj, jlong event_ptr, jlong marker_field_ptr) {
        LttEvent newEventPtr = *(LttEvent*)(CONVERT_JLONG_TO_PTR(event_ptr));
        struct marker_field* newMarkerFieldPtr = (struct marker_field*)CONVERT_JLONG_TO_PTR(marker_field_ptr);
        
        jmethodID accessFunction = NULL;
        
        
        // There is a very limited number of type in LTT
        // We will switch on the type for this field and act accordingly
        //   NOTE : We will save all integer into "long" type, as there is no signed/unsigned in java
        
        // *** HACK ***
        // It seems the marker_field->type is absolutely not consistent, especially about pointer!
        //    Sometime pointer are saved in String, sometime as Int, sometime as pointer...
        // We will do an extra check on type "LTT_TYPE_UNSIGNED_INT" to check if the marker_field->format is hint of a pointer
        switch ( newMarkerFieldPtr->type ) {
                case LTT_TYPE_SIGNED_INT : 
                        accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addLongToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;J)V");
                        (*env)->CallStaticVoidMethod(   env, 
                                                        accessClass, 
                                                        accessFunction, 
                                                        javaObj, 
                                                        (*env)->NewStringUTF(env, g_quark_to_string(newMarkerFieldPtr->name) ), 
                                                        ltt_event_get_long_int(&newEventPtr, newMarkerFieldPtr), 
                                                        (*env)->NewStringUTF(env, newMarkerFieldPtr->fmt->str )
                                                     );
                        
                        break;
                
                case LTT_TYPE_UNSIGNED_INT :
                        
                        // If the format seems to be a pointer, add it as a pointer
                        if ( (strncmp(newMarkerFieldPtr->fmt->str, "0x%llX", newMarkerFieldPtr->fmt->len) == 0 ) || (strncmp(newMarkerFieldPtr->fmt->str, "%llX", newMarkerFieldPtr->fmt->len) == 0 ) ) {
                                #if ARCHITECTURE_IS_64BITS == 0
                                        accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addIntPointerToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;J)V");
                                #else
                                        accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addLongPointerToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;J)V");
                                #endif
                                (*env)->CallStaticVoidMethod(   env, 
                                                                accessClass, 
                                                                accessFunction, 
                                                                javaObj, 
                                                                (*env)->NewStringUTF(env, g_quark_to_string(newMarkerFieldPtr->name) ),
                                                                CONVERT_PTR_TO_JLONG(ltt_event_get_long_unsigned(&newEventPtr, newMarkerFieldPtr) ), 
                                                                (*env)->NewStringUTF(env, newMarkerFieldPtr->fmt->str )
                                                             );
                        }
                        // Otherwise, add it as a number
                        else {
                                accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addLongToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;J)V");
                                (*env)->CallStaticVoidMethod(   env, 
                                                                accessClass,
                                                                accessFunction,
                                                                javaObj,
                                                                (*env)->NewStringUTF(env, g_quark_to_string(newMarkerFieldPtr->name) ), 
                                                                ltt_event_get_long_unsigned(&newEventPtr, newMarkerFieldPtr),
                                                                (*env)->NewStringUTF(env, newMarkerFieldPtr->fmt->str )
                                                             );
                        }
                        
                        break;
                        
                case LTT_TYPE_POINTER :
                        #if ARCHITECTURE_IS_64BITS == 0
                                accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addIntPointerToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;J)V");
                        #else
                                accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addLongPointerToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;J)V");
                        #endif
                        (*env)->CallStaticVoidMethod(   env, 
                                                        accessClass, 
                                                        accessFunction, 
                                                        javaObj, 
                                                        (*env)->NewStringUTF(env, g_quark_to_string(newMarkerFieldPtr->name) ),
                                                        CONVERT_PTR_TO_JLONG(*(GINT_TYPE_FOR_PTR*)(newEventPtr.data + newMarkerFieldPtr->offset)),
                                                        (*env)->NewStringUTF(env, newMarkerFieldPtr->fmt->str )
                                                     );
                        break;
                        
                case LTT_TYPE_STRING :
                        accessFunction = (*env)->GetStaticMethodID(env, accessClass, "addStringToParsingFromC", "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/String;)V");
                        (*env)->CallStaticVoidMethod(   env,
                                                        accessClass,
                                                        accessFunction,
                                                        javaObj,
                                                        (*env)->NewStringUTF(env, g_quark_to_string(newMarkerFieldPtr->name) ),
                                                        (*env)->NewStringUTF(env, ltt_event_get_string(&newEventPtr, newMarkerFieldPtr) ),
                                                        (*env)->NewStringUTF(env, newMarkerFieldPtr->fmt->str )
                                                     );
                        break;
                        
                case LTT_TYPE_COMPACT :
                case LTT_TYPE_NONE :
                default :
                        printf("Warning : Unrecognized format type! Skipping! (Java_org_eclipse_linuxtools_lttng_jni_JniParser_ltt_1fillParseArray)");
                        break;
        }
        
}

// #
// ###