From bc84fb1f642cbd15064c86d3839e278be536b254 Mon Sep 17 00:00:00 2001
From: Lukas Wölfer <lukas.woelfer@rwth-aachen.de>
Date: Sat, 24 Jun 2017 19:23:32 +0200
Subject: Added pause and continue functionality for states in Executor

---
 lib/Core/Executor.cpp | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'lib/Core/Executor.cpp')

diff --git a/lib/Core/Executor.cpp b/lib/Core/Executor.cpp
index 0b7aa1a9..e79d6a2c 100644
--- a/lib/Core/Executor.cpp
+++ b/lib/Core/Executor.cpp
@@ -2456,6 +2456,9 @@ void Executor::executeInstruction(ExecutionState &state, KInstruction *ki) {
 void Executor::updateStates(ExecutionState *current) {
   if (searcher) {
     searcher->update(current, addedStates, removedStates);
+    searcher->update(0, continuedStates, pausedStates);
+    pausedStates.clear();
+    continuedStates.clear();
   }
   
   states.insert(addedStates.begin(), addedStates.end());
@@ -2741,6 +2744,31 @@ std::string Executor::getAddressInfo(ExecutionState &state,
   return info.str();
 }
 
+void Executor::pauseState(ExecutionState &state){
+  std::vector<ExecutionState *>::iterator it = std::find(continuedStates.begin(), continuedStates.end(), &state);
+  // If the state was to be continued, but now gets paused again
+  if (it != continuedStates.end()){
+    // ...just don't continue it
+    std::swap(*it, continuedStates.back());
+    continuedStates.pop_back();
+  } else {
+    pausedStates.push_back(&state);
+  }
+}
+
+void Executor::continueState(ExecutionState &state){
+  std::vector<ExecutionState *>::iterator it = std::find(pausedStates.begin(), pausedStates.end(), &state);
+  // If the state was to be paused, but now gets continued again
+  if (it != pausedStates.end()){
+    // ...don't pause it
+    std::swap(*it, pausedStates.back());
+    pausedStates.pop_back();
+  } else {
+    continuedStates.push_back(&state);
+  }
+}
+
+
 void Executor::terminateState(ExecutionState &state) {
   if (replayKTest && replayPosition!=replayKTest->numObjects) {
     klee_warning_once(replayKTest,
-- 
cgit 1.4.1