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No more weak JNI refs!

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Summary:
@public

Completely removes the usage of weak JNI refs.

This is great, because node allocation and deallocation no longer go through a VM-global lock to access the weak reference table.
This is also great, because we can no longer overflow that ref table.
Performance is comparable to weak refs.

Reviewed By: marco-cova

Differential Revision: D14423068

fbshipit-source-id: 62003d2d6fd971e91460a26fb3477046f26e2ba5
This commit is contained in:
David Aurelio
2019-03-12 12:59:58 -07:00
committed by Facebook Github Bot
parent 7890672ecc
commit 3331a9e480
2 changed files with 21 additions and 42 deletions
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31
java/jni/YGJNI.cpp
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@@ -89,11 +89,7 @@ public:
};
struct YGNodeContext {
weak_ref<jobject>* ygNodeJObjectRef{nullptr};
int edgeSetFlag = 0;
~YGNodeContext() {
delete ygNodeJObjectRef;
}
};
const int MARGIN = 1;
@@ -107,13 +103,7 @@ static inline YGNodeContext* ygNodeRefToYGNodeContext(YGNodeRef node) {
static inline local_ref<JYogaNode> YGNodeJobject(
YGNodeRef node,
void* layoutContext) {
if (layoutContext == nullptr) {
return (reinterpret_cast<weak_ref<JYogaNode>*>(
ygNodeRefToYGNodeContext(node)->ygNodeJObjectRef))
->lockLocal();
} else {
return reinterpret_cast<PtrJNodeMap*>(layoutContext)->ref(node);
}
return reinterpret_cast<PtrJNodeMap*>(layoutContext)->ref(node);
}
static void YGTransferLayoutDirection(
@@ -320,25 +310,20 @@ static int YGJNILogFunc(
return result;
}
YGNodeContext* createYGNodeContext(alias_ref<jobject> thiz) {
YGNodeContext* ygNodeContext = new YGNodeContext();
ygNodeContext->ygNodeJObjectRef = new weak_ref<jobject>(make_weak(thiz));
return ygNodeContext;
YGNodeContext* createYGNodeContext() {
return new YGNodeContext();
}
jlong jni_YGNodeNew(alias_ref<jobject> thiz) {
jlong jni_YGNodeNew(alias_ref<jobject>) {
const YGNodeRef node = YGNodeNew();
node->setContext(createYGNodeContext(thiz));
node->setContext(createYGNodeContext());
node->setPrintFunc(YGPrint);
return reinterpret_cast<jlong>(node);
}
jlong jni_YGNodeNewWithConfig(
alias_ref<jobject> thiz,
jlong configPointer,
jboolean avoidGlobalJNIRefs) {
jlong jni_YGNodeNewWithConfig(alias_ref<jobject>, jlong configPointer) {
const YGNodeRef node = YGNodeNewWithConfig(_jlong2YGConfigRef(configPointer));
node->setContext(createYGNodeContext(avoidGlobalJNIRefs ? nullptr : thiz));
node->setContext(createYGNodeContext());
return reinterpret_cast<jlong>(node);
}
@@ -817,7 +802,7 @@ static void YGNodeSetStyleInputs(
}
void jni_YGNodeSetStyleInputs(
alias_ref<jobject> thiz,
alias_ref<jobject>,
jlong nativePointer,
alias_ref<JArrayFloat> styleInputs,
jint size) {