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      1 // Copyright 2008 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 #include "src/v8.h"
     29 #include "test/cctest/cctest.h"
     30 
     31 #include "src/base/platform/platform.h"
     32 #include "src/isolate.h"
     33 
     34 
     35 class ThreadIdValidationThread : public v8::base::Thread {
     36  public:
     37   ThreadIdValidationThread(v8::base::Thread* thread_to_start,
     38                            i::List<i::ThreadId>* refs, unsigned int thread_no,
     39                            v8::base::Semaphore* semaphore)
     40       : Thread(Options("ThreadRefValidationThread")),
     41         refs_(refs),
     42         thread_no_(thread_no),
     43         thread_to_start_(thread_to_start),
     44         semaphore_(semaphore) {}
     45 
     46   void Run() {
     47     i::ThreadId thread_id = i::ThreadId::Current();
     48     for (int i = 0; i < thread_no_; i++) {
     49       CHECK(!(*refs_)[i].Equals(thread_id));
     50     }
     51     CHECK(thread_id.IsValid());
     52     (*refs_)[thread_no_] = thread_id;
     53     if (thread_to_start_ != NULL) {
     54       thread_to_start_->Start();
     55     }
     56     semaphore_->Signal();
     57   }
     58 
     59  private:
     60   i::List<i::ThreadId>* refs_;
     61   int thread_no_;
     62   v8::base::Thread* thread_to_start_;
     63   v8::base::Semaphore* semaphore_;
     64 };
     65 
     66 
     67 TEST(ThreadIdValidation) {
     68   const int kNThreads = 100;
     69   i::List<ThreadIdValidationThread*> threads(kNThreads);
     70   i::List<i::ThreadId> refs(kNThreads);
     71   v8::base::Semaphore semaphore(0);
     72   ThreadIdValidationThread* prev = NULL;
     73   for (int i = kNThreads - 1; i >= 0; i--) {
     74     ThreadIdValidationThread* newThread =
     75         new ThreadIdValidationThread(prev, &refs, i, &semaphore);
     76     threads.Add(newThread);
     77     prev = newThread;
     78     refs.Add(i::ThreadId::Invalid());
     79   }
     80   prev->Start();
     81   for (int i = 0; i < kNThreads; i++) {
     82     semaphore.Wait();
     83   }
     84   for (int i = 0; i < kNThreads; i++) {
     85     delete threads[i];
     86   }
     87 }
     88