react-native/ReactCommon/cxxreact/Instance.h

93 lines
2.6 KiB
C++

// Copyright 2004-present Facebook. All Rights Reserved.
#pragma once
#include <condition_variable>
#include <memory>
#include <cxxreact/NativeToJsBridge.h>
#include <jschelpers/Value.h>
#ifndef RN_EXPORT
#define RN_EXPORT __attribute__((visibility("default")))
#endif
namespace folly {
struct dynamic;
}
namespace facebook {
namespace react {
class JSBigString;
class JSExecutorFactory;
class JSModulesUnbundle;
class MessageQueueThread;
class ModuleRegistry;
struct InstanceCallback {
virtual ~InstanceCallback() {}
virtual void onBatchComplete() = 0;
virtual void incrementPendingJSCalls() = 0;
virtual void decrementPendingJSCalls() = 0;
};
class RN_EXPORT Instance {
public:
~Instance();
void initializeBridge(
std::unique_ptr<InstanceCallback> callback,
std::shared_ptr<JSExecutorFactory> jsef,
std::shared_ptr<MessageQueueThread> jsQueue,
std::shared_ptr<ModuleRegistry> moduleRegistry);
void setSourceURL(std::string sourceURL);
void loadScriptFromString(
std::unique_ptr<const JSBigString> string,
std::string sourceURL,
bool loadSynchronously);
void loadUnbundle(
std::unique_ptr<JSModulesUnbundle> unbundle,
std::unique_ptr<const JSBigString> startupScript,
std::string startupScriptSourceURL,
bool loadSynchronously);
bool supportsProfiling();
void setGlobalVariable(std::string propName, std::unique_ptr<const JSBigString> jsonValue);
void *getJavaScriptContext();
void callJSFunction(std::string&& module, std::string&& method, folly::dynamic&& params);
void callJSCallback(uint64_t callbackId, folly::dynamic&& params);
// This method is experimental, and may be modified or removed.
template <typename T>
Value callFunctionSync(const std::string& module, const std::string& method, T&& args) {
CHECK(nativeToJsBridge_);
return nativeToJsBridge_->callFunctionSync(module, method, std::forward<T>(args));
}
#ifdef WITH_JSC_MEMORY_PRESSURE
void handleMemoryPressure(int pressureLevel);
#endif
private:
void callNativeModules(folly::dynamic&& calls, bool isEndOfBatch);
void loadApplication(
std::unique_ptr<JSModulesUnbundle> unbundle,
std::unique_ptr<const JSBigString> startupScript,
std::string startupScriptSourceURL);
void loadApplicationSync(
std::unique_ptr<JSModulesUnbundle> unbundle,
std::unique_ptr<const JSBigString> startupScript,
std::string startupScriptSourceURL);
std::shared_ptr<InstanceCallback> callback_;
std::unique_ptr<NativeToJsBridge> nativeToJsBridge_;
std::shared_ptr<ModuleRegistry> moduleRegistry_;
std::mutex m_syncMutex;
std::condition_variable m_syncCV;
bool m_syncReady = false;
};
} }