* Move irregexp backtrack stack to external memory area, instead of the system stack.

src/v8threads.cc

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "v8.h"
 
 #include "api.h"
 #include "debug.h"
 #include "execution.h"
 #include "v8threads.h"
+#include "regexp-stack.h"
 
 namespace v8 {
 
 static internal::Thread::LocalStorageKey thread_state_key =
     internal::Thread::CreateThreadLocalKey();
 
 // Constructor for the Locker object.  Once the Locker is constructed the
 // current thread will be guaranteed to have the big V8 lock.
 Locker::Locker() : has_lock_(false), top_level_(true) {
   // Get the big lock if necessary.
@@ skipping 74 matching lines @@
   ThreadState* state =
       reinterpret_cast<ThreadState*>(Thread::GetThreadLocal(thread_state_key));
   if (state == NULL) {
     return false;
   }
   char* from = state->data();
   from = HandleScopeImplementer::RestoreThread(from);
   from = Top::RestoreThread(from);
   from = Debug::RestoreDebug(from);
   from = StackGuard::RestoreStackGuard(from);
+  from = RegExpStack::RestoreStack(from);
   Thread::SetThreadLocal(thread_state_key, NULL);
   state->Unlink();
   state->LinkInto(ThreadState::FREE_LIST);
   return true;
 }
 
 
 void ThreadManager::Lock() {
   mutex_->Lock();
   mutex_owner_.Initialize(ThreadHandle::SELF);
   ASSERT(IsLockedByCurrentThread());
 }
 
 
 void ThreadManager::Unlock() {
   mutex_owner_.Initialize(ThreadHandle::INVALID);
   mutex_->Unlock();
 }
 
 
 static int ArchiveSpacePerThread() {
   return HandleScopeImplementer::ArchiveSpacePerThread() +
                             Top::ArchiveSpacePerThread() +
                           Debug::ArchiveSpacePerThread() +
-                     StackGuard::ArchiveSpacePerThread();
+                     StackGuard::ArchiveSpacePerThread() +
+                    RegExpStack::ArchiveSpacePerThread();
 }
 
 
 ThreadState* ThreadState::free_anchor_ = new ThreadState();
 ThreadState* ThreadState::in_use_anchor_ = new ThreadState();
 
 
 ThreadState::ThreadState() : next_(this), previous_(this) {
 }
 
@@ skipping 60 matching lines @@
 
 
 void ThreadManager::EagerlyArchiveThread() {
   ThreadState* state = lazily_archived_thread_state_;
   state->LinkInto(ThreadState::IN_USE_LIST);
   char* to = state->data();
   to = HandleScopeImplementer::ArchiveThread(to);
   to = Top::ArchiveThread(to);
   to = Debug::ArchiveDebug(to);
   to = StackGuard::ArchiveStackGuard(to);
+  to = RegExpStack::ArchiveStack(to);
   lazily_archived_thread_.Initialize(ThreadHandle::INVALID);
   lazily_archived_thread_state_ = NULL;
 }
 
 
 void ThreadManager::Iterate(ObjectVisitor* v) {
   // Expecting no threads during serialization/deserialization
   for (ThreadState* state = ThreadState::FirstInUse();
        state != NULL;
        state = state->Next()) {
@@ skipping 82 matching lines @@
 // Acknowledge the preemption by the receiving thread.
 void ContextSwitcher::PreemptionReceived() {
   ASSERT(Locker::IsLocked());
   // There is currently no accounting being done for this. But could be in the
   // future, which is why we leave this in.
 }
 
 
 }  // namespace internal
 }  // namespace v8