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[executorch][android] Add Runtime.java to centralize native library l… #10672

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[executorch][android] Add Runtime.java to centralize native library l…
May 3, 2025
a6486e6
Merge branch 'main' into android/add-runtime-java
LefterisXefteris May 3, 2025
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28 changes: 28 additions & 0 deletions extension/android/executorch_android/src/main/java/org/pytorch/executorch/Runtime.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
package org.pytorch.executorch;

import com.facebook.soloader.nativeloader.NativeLoader;
import com.facebook.soloader.nativeloader.SystemDelegate;
import com.facebook.jni.annotations.DoNotStrip;

public class Runtime {
private static boolean initialized = false;

static {
if (!NativeLoader.isInitialized()) {
NativeLoader.init(new SystemDelegate());
}
// Loads libexecutorch.so from jniLibs
NativeLoader.loadLibrary("executorch");
initialized = true;
}

public static boolean isInitialized() {
return initialized;
}

@DoNotStrip
public static native String[] getRegisteredOps();

@DoNotStrip
public static native String[] getRegisteredBackends();
}
7 changes: 3 additions & 4 deletions ...roid/executorch_android/src/main/java/org/pytorch/executorch/extension/llm/LlmModule.java
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Expand Up @@ -13,6 +13,7 @@
import com.facebook.soloader.nativeloader.NativeLoader;
import com.facebook.soloader.nativeloader.SystemDelegate;
import org.pytorch.executorch.annotations.Experimental;
import org.pytorch.executorch.Runtime;

/**
* LlmModule is a wrapper around the Executorch LLM. It provides a simple interface to generate text
Expand All @@ -27,11 +28,9 @@ public class LlmModule {
public static final int MODEL_TYPE_TEXT_VISION = 2;

static {
if (!NativeLoader.isInitialized()) {
NativeLoader.init(new SystemDelegate());
if (!Runtime.isInitialized()) {
throw new IllegalStateException("ExecuTorch runtime not initialized.");
}
NativeLoader.loadLibrary("executorch");
}

private final HybridData mHybridData;
private static final int DEFAULT_SEQ_LEN = 128;
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