react-native/ReactCommon/inspector/LegacyScriptDebugServer.cpp

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// Copyright 2004-present Facebook. All Rights Reserved.
#include "LegacyScriptDebugServer.h"
#include <JavaScriptCore/JSGlobalObject.h>
namespace facebook {
namespace react {
using namespace Inspector;
LegacyScriptDebugServer::LegacyScriptDebugServer(JSC::JSGlobalObject& globalObject)
: Inspector::ScriptDebugServer(false)
, globalObject_(globalObject) {}
void LegacyScriptDebugServer::addListener(ScriptDebugListener* listener)
{
if (!listener) {
return;
}
bool wasEmpty = listeners_.isEmpty();
listeners_.add(listener);
// First listener. Attach the debugger to the JSGlobalObject.
if (wasEmpty) {
attach(&globalObject_);
recompileAllJSFunctions();
}
}
void LegacyScriptDebugServer::removeListener(ScriptDebugListener* listener, bool isBeingDestroyed) {
if (!listener) {
return;
}
listeners_.remove(listener);
// Last listener. Detach the debugger from the JSGlobalObject.
if (listeners_.isEmpty()) {
detach(&globalObject_, isBeingDestroyed ? Debugger::GlobalObjectIsDestructing : Debugger::TerminatingDebuggingSession);
if (!isBeingDestroyed) {
recompileAllJSFunctions();
}
}
}
void LegacyScriptDebugServer::recompileAllJSFunctions() {
JSC::Debugger::recompileAllJSFunctions(&globalObject_.vm());
}
void LegacyScriptDebugServer::runEventLoopWhilePaused() {
// Drop all locks so another thread can work in the VM while we are nested.
JSC::JSLock::DropAllLocks dropAllLocks(&globalObject_.vm());
// Spinning here is our best option, we could override the method
// notifyDoneProcessingDebuggerEvents but it's marked as final :(
while (!m_doneProcessingDebuggerEvents) {
usleep(10 * 1000);
}
}
}
}