added a JniCache objectet for caching jclass, jmethodID, and jfieldID objects

1 files changed, 18 insertions, 2 deletions

diff --git a/java/jni/com_zerotierone_sdk_Node.cpp b/java/jni/com_zerotierone_sdk_Node.cpp
index 5462c864..3b5c00a0 100644
--- a/java/jni/com_zerotierone_sdk_Node.cpp
+++ b/java/jni/com_zerotierone_sdk_Node.cpp
@@ -27,6 +27,7 @@
 
 #include "com_zerotierone_sdk_Node.h"
 #include "ZT1_jniutils.h"
+#include "ZT1_jnicache.h"
 
 #include <ZeroTierOne.h>
 
@@ -39,6 +40,9 @@
 extern "C" {
 #endif
 
+// global static JNI Cache Object
+static JniCache cache;
+
 namespace {
     struct JniRef
     {
@@ -322,7 +326,7 @@ namespace {
         LOGD("Calling onDataStoreGet(%s, %p, %lu, %p)",
             objectName, buffer, bufferIndex, objectSizeObj);
 
-        long retval = env->CallLongMethod(
+        long retval = (long)env->CallLongMethod(
             ref->dataStoreGetListener, dataStoreGetCallbackMethod, 
             nameStr, bufferObj, (jlong)bufferIndex, objectSizeObj);
 
@@ -446,6 +450,18 @@ namespace {
     }
 }
 
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved) 
+{
+    cache.setJavaVM(vm);
+    return JNI_VERSION_1_6;
+}
+
+JNIEXPORT void JNICALL JNI_OnUnload(JavaVM *vm, void *reserved)
+{
+    cache.clearCache();
+}
+
+
 /*
  * Class:     com_zerotierone_sdk_Node
  * Method:    node_init
@@ -905,7 +921,7 @@ JNIEXPORT jobject JNICALL Java_com_zerotierone_sdk_Node_multicastSubscribe(
 
     uint64_t nwid = (uint64_t)in_nwid;
     uint64_t multicastGroup = (uint64_t)in_multicastGroup;
-    uint64_t multicastAdi = (uint64_t)in_multicastAdi;
+    unsigned long multicastAdi = (unsigned long)in_multicastAdi;
 
     ZT1_ResultCode rc = ZT1_Node_multicastSubscribe(
         node, nwid, multicastGroup, multicastAdi);