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WebWorkers: Add ExecutorToken to route native module calls to/from workers

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Summary:To support native modules in web workers, native modules need to have an notion of the JS executor/thread that called into them in order to respond via Callback or JS module call to the right executor on the right thread.

ExecutorToken is an object that only serves as a token that can be used to identify an executor/message queue thread in the bridge. It doesn't expose any methods. Native modules Callback objects automatically have this ExecutionContext attached -- JSModule calls for modules that support workers will need to supply an appropriate ExecutorToken when retrieving the JSModule implementation from the ReactContext.

Reviewed By: mhorowitz

Differential Revision: D2965458

fb-gh-sync-id: 6e354d4df8536d40b12d02bd055f6d06b4ca595d
shipit-source-id: 6e354d4df8536d40b12d02bd055f6d06b4ca595d
This commit is contained in:
Andy Street
2016-03-01 07:57:11 -08:00
committed by Facebook Github Bot 4
parent f67fa82008
commit bd95b22844
26 changed files with 614 additions and 116 deletions
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ReactAndroid/src/main/java/com/facebook/react/bridge/JavaScriptModuleRegistry.java
+43 -13
View File
@@ -12,12 +12,16 @@ package com.facebook.react.bridge;
import javax.annotation.Nullable;
import java.lang.Class;
import java.lang.ref.WeakReference;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.HashMap;
import java.util.WeakHashMap;
import com.facebook.common.logging.FLog;
import com.facebook.infer.annotation.Assertions;
import com.facebook.react.common.ReactConstants;
/**
* Class responsible for holding all the {@link JavaScriptModule}s registered to this
@@ -27,45 +31,71 @@ import com.facebook.infer.annotation.Assertions;
*/
/*package*/ class JavaScriptModuleRegistry {
private final HashMap<Class<? extends JavaScriptModule>, JavaScriptModule> mModuleInstances;
private final CatalystInstanceImpl mCatalystInstance;
private final WeakHashMap<ExecutorToken, HashMap<Class<? extends JavaScriptModule>, JavaScriptModule>> mModuleInstances;
private final HashMap<Class<? extends JavaScriptModule>, JavaScriptModuleRegistration> mModuleRegistrations;
public JavaScriptModuleRegistry(
CatalystInstanceImpl instance,
JavaScriptModulesConfig config) {
mModuleInstances = new HashMap<>();
mCatalystInstance = instance;
mModuleInstances = new WeakHashMap<>();
mModuleRegistrations = new HashMap<>();
for (JavaScriptModuleRegistration registration : config.getModuleDefinitions()) {
Class<? extends JavaScriptModule> moduleInterface = registration.getModuleInterface();
JavaScriptModule interfaceProxy = (JavaScriptModule) Proxy.newProxyInstance(
moduleInterface.getClassLoader(),
new Class[]{moduleInterface},
new JavaScriptModuleInvocationHandler(instance, registration));
mModuleInstances.put(moduleInterface, interfaceProxy);
mModuleRegistrations.put(registration.getModuleInterface(), registration);
}
}
public <T extends JavaScriptModule> T getJavaScriptModule(Class<T> moduleInterface) {
return (T) Assertions.assertNotNull(
mModuleInstances.get(moduleInterface),
"JS module " + moduleInterface.getSimpleName() + " hasn't been registered!");
public synchronized <T extends JavaScriptModule> T getJavaScriptModule(ExecutorToken executorToken, Class<T> moduleInterface) {
HashMap<Class<? extends JavaScriptModule>, JavaScriptModule> instancesForContext =
mModuleInstances.get(executorToken);
if (instancesForContext == null) {
instancesForContext = new HashMap<>();
mModuleInstances.put(executorToken, instancesForContext);
}
JavaScriptModule module = instancesForContext.get(moduleInterface);
if (module != null) {
return (T) module;
}
JavaScriptModuleRegistration registration =
Assertions.assertNotNull(
mModuleRegistrations.get(moduleInterface),
"JS module " + moduleInterface.getSimpleName() + " hasn't been registered!");
JavaScriptModule interfaceProxy = (JavaScriptModule) Proxy.newProxyInstance(
moduleInterface.getClassLoader(),
new Class[]{moduleInterface},
new JavaScriptModuleInvocationHandler(executorToken, mCatalystInstance, registration));
instancesForContext.put(moduleInterface, interfaceProxy);
return (T) interfaceProxy;
}
private static class JavaScriptModuleInvocationHandler implements InvocationHandler {
private final WeakReference<ExecutorToken> mExecutorToken;
private final CatalystInstanceImpl mCatalystInstance;
private final JavaScriptModuleRegistration mModuleRegistration;
public JavaScriptModuleInvocationHandler(
ExecutorToken executorToken,
CatalystInstanceImpl catalystInstance,
JavaScriptModuleRegistration moduleRegistration) {
mExecutorToken = new WeakReference<>(executorToken);
mCatalystInstance = catalystInstance;
mModuleRegistration = moduleRegistration;
}
@Override
public @Nullable Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
ExecutorToken executorToken = mExecutorToken.get();
if (executorToken == null) {
FLog.w(ReactConstants.TAG, "Dropping JS call, ExecutorToken went away...");
return null;
}
String tracingName = mModuleRegistration.getTracingName(method);
mCatalystInstance.callFunction(
executorToken,
mModuleRegistration.getModuleId(),
mModuleRegistration.getMethodId(method),
Arguments.fromJavaArgs(args),