[inspector] use same schedulePauseOnNextStatement strategy for Debugger.pause

src/inspector/v8-debugger-agent-impl.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/inspector/v8-debugger-agent-impl.h"
 
 #include <algorithm>
 
 #include "src/debug/debug-interface.h"
 #include "src/inspector/injected-script.h"
@@ skipping 180 matching lines @@
 
 V8DebuggerAgentImpl::V8DebuggerAgentImpl(
     V8InspectorSessionImpl* session, protocol::FrontendChannel* frontendChannel,
     protocol::DictionaryValue* state)
     : m_inspector(session->inspector()),
       m_debugger(m_inspector->debugger()),
       m_session(session),
       m_enabled(false),
       m_state(state),
       m_frontend(frontendChannel),
-      m_isolate(m_inspector->isolate()),
-      m_javaScriptPauseScheduled(false) {}
+      m_isolate(m_inspector->isolate()) {}
 
 V8DebuggerAgentImpl::~V8DebuggerAgentImpl() {}
 
 void V8DebuggerAgentImpl::enableImpl() {
   m_enabled = true;
   m_state->setBoolean(DebuggerAgentState::debuggerEnabled, true);
   m_debugger->enable();
 
   std::vector<std::unique_ptr<V8DebuggerScript>> compiledScripts;
   m_debugger->getCompiledScripts(m_session->contextGroupId(), compiledScripts);
@@ skipping 31 matching lines @@
   JavaScriptCallFrames emptyCallFrames;
   m_pausedCallFrames.swap(emptyCallFrames);
   m_blackboxedPositions.clear();
   m_blackboxPattern.reset();
   resetBlackboxedStateCache();
   m_scripts.clear();
   m_breakpointIdToDebuggerBreakpointIds.clear();
   m_debugger->setAsyncCallStackDepth(this, 0);
   m_continueToLocationBreakpointId = String16();
   clearBreakDetails();
-  m_javaScriptPauseScheduled = false;
   m_skipAllPauses = false;
   m_state->setBoolean(DebuggerAgentState::skipAllPauses, false);
   m_state->remove(DebuggerAgentState::blackboxPattern);
   m_enabled = false;
   m_state->setBoolean(DebuggerAgentState::debuggerEnabled, false);
   return Response::OK();
 }
 
 void V8DebuggerAgentImpl::restore() {
   DCHECK(!m_enabled);
@@ skipping 19 matching lines @@
   String16 blackboxPattern;
   if (m_state->getString(DebuggerAgentState::blackboxPattern,
                          &blackboxPattern)) {
     setBlackboxPattern(blackboxPattern);
   }
 }
 
 Response V8DebuggerAgentImpl::setBreakpointsActive(bool active) {
   if (!enabled()) return Response::Error(kDebuggerNotEnabled);
   m_debugger->setBreakpointsActivated(active);
+  if (!active && !m_breakReason.empty()) {
+    clearBreakDetails();
+    m_debugger->setPauseOnNextStatement(false, m_session->contextGroupId());
+  }
   return Response::OK();
 }
 
 Response V8DebuggerAgentImpl::setSkipAllPauses(bool skip) {
   m_state->setBoolean(DebuggerAgentState::skipAllPauses, skip);
   m_skipAllPauses = skip;
   return Response::OK();
 }
 
 static std::unique_ptr<protocol::DictionaryValue>
@@ skipping 374 matching lines @@
 }
 
 void V8DebuggerAgentImpl::clearBreakDetails() {
   std::vector<BreakReason> emptyBreakReason;
   m_breakReason.swap(emptyBreakReason);
 }
 
 void V8DebuggerAgentImpl::schedulePauseOnNextStatement(
     const String16& breakReason,
     std::unique_ptr<protocol::DictionaryValue> data) {
-  if (!enabled() || m_javaScriptPauseScheduled || isPaused() ||
-      !m_debugger->breakpointsActivated())
-    return;
+  if (!enabled() || isPaused() || !m_debugger->breakpointsActivated()) return;
   if (m_breakReason.empty()) {
     m_debugger->setPauseOnNextStatement(true, m_session->contextGroupId());
   }
   pushBreakDetails(breakReason, std::move(data));
 }
 
 void V8DebuggerAgentImpl::cancelPauseOnNextStatement() {
-  if (m_javaScriptPauseScheduled || isPaused()) return;
+  if (!enabled() || isPaused() || !m_debugger->breakpointsActivated()) return;
+  if (m_breakReason.size() == 1) {
+    m_debugger->setPauseOnNextStatement(false, m_session->contextGroupId());
+  }
   popBreakDetails();
-  if (m_breakReason.empty())
-    m_debugger->setPauseOnNextStatement(false, m_session->contextGroupId());
 }
 
 Response V8DebuggerAgentImpl::pause() {
   if (!enabled()) return Response::Error(kDebuggerNotEnabled);
-  if (m_javaScriptPauseScheduled || isPaused()) return Response::OK();
-  clearBreakDetails();
-  m_javaScriptPauseScheduled = true;
-  m_debugger->setPauseOnNextStatement(true, m_session->contextGroupId());
+  if (isPaused()) return Response::OK();
+  if (m_breakReason.empty()) {
+    m_debugger->setPauseOnNextStatement(true, m_session->contextGroupId());
+  }
+  pushBreakDetails(protocol::Debugger::Paused::ReasonEnum::Other, nullptr);
   return Response::OK();
 }
 
 Response V8DebuggerAgentImpl::resume() {
   if (!isPaused()) return Response::Error(kDebuggerNotPaused);
   m_session->releaseObjectGroup(kBacktraceObjectGroup);
   m_debugger->continueProgram();
   return Response::OK();
 }
 
@@ skipping 513 matching lines @@
         Response::Error("No async tasks were scheduled before pause."));
     m_stepIntoAsyncCallback.reset();
   }
 
   std::unique_ptr<Array<CallFrame>> protocolCallFrames;
   Response response = currentCallFrames(&protocolCallFrames);
   if (!response.isSuccess()) protocolCallFrames = Array<CallFrame>::create();
   m_frontend.paused(std::move(protocolCallFrames), breakReason,
                     std::move(breakAuxData), std::move(hitBreakpointIds),
                     currentAsyncStackTrace());
-  m_javaScriptPauseScheduled = false;
 
   if (!m_continueToLocationBreakpointId.isEmpty()) {
     m_debugger->removeBreakpoint(m_continueToLocationBreakpointId);
     m_continueToLocationBreakpointId = "";
   }
 }
 
 void V8DebuggerAgentImpl::didContinue() {
   JavaScriptCallFrames emptyCallFrames;
   m_pausedCallFrames.swap(emptyCallFrames);
@@ skipping 44 matching lines @@
 
 void V8DebuggerAgentImpl::reset() {
   if (!enabled()) return;
   m_blackboxedPositions.clear();
   resetBlackboxedStateCache();
   m_scripts.clear();
   m_breakpointIdToDebuggerBreakpointIds.clear();
 }
 
 }  // namespace v8_inspector