static RefNode *
createNode(JNIEnv *env, jobject ref)
{
RefNode *node;
jobject weakRef;
weakRef = JNI_FUNC_PTR(env,NewWeakGlobalRef)(env, ref);
if (weakRef == NULL) {
return NULL;
}
/*
* TO DO: Consider fewer allocations of bigger chunks if
* performance is a problem here.
*/
node = jvmtiAllocate(sizeof(*node));
if (node == NULL) {
JNI_FUNC_PTR(env,DeleteWeakGlobalRef)(env, weakRef);
return NULL;
}
node->ref = weakRef;
node->isStrong = JNI_FALSE;
node->count = 1;
node->seqNum = newSeqNum();
return node;
}
/* Create a fresh RefNode structure, create a weak ref and tag the object */
static RefNode *
createNode(JNIEnv *env, jobject ref)
{
RefNode *node;
jobject weakRef;
jvmtiError error;
/* Could allocate RefNode's in blocks, not sure it would help much */
node = (RefNode*)jvmtiAllocate((int)sizeof(RefNode));
if (node == NULL) {
return NULL;
}
/* Create weak reference to make sure we have a reference */
weakRef = JNI_FUNC_PTR(env,NewWeakGlobalRef)(env, ref);
if (weakRef == NULL) {
jvmtiDeallocate(node);
return NULL;
}
/* Set tag on weakRef */
error = JVMTI_FUNC_PTR(gdata->jvmti, SetTag)
(gdata->jvmti, weakRef, ptr_to_jlong(node));
if ( error != JVMTI_ERROR_NONE ) {
JNI_FUNC_PTR(env,DeleteWeakGlobalRef)(env, weakRef);
jvmtiDeallocate(node);
return NULL;
}
/* Fill in RefNode */
node->ref = weakRef;
node->isStrong = JNI_FALSE;
node->count = 1;
node->seqNum = newSeqNum();
/* Count RefNode's created */
gdata->objectsByIDcount++;
return node;
}
