text: /*
      Copyright 2005-2016 Intel Corporation.  All Rights Reserved.
  
      This file is part of Threading Building Blocks. Threading Building Blocks is free software;
      you can redistribute it and/or modify it under the terms of the GNU General Public License
      version 2  as  published  by  the  Free Software Foundation.  Threading Building Blocks is
      distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
      implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
      See  the GNU General Public License for more details.   You should have received a copy of
      the  GNU General Public License along with Threading Building Blocks; if not, write to the
      Free Software Foundation, Inc.,  51 Franklin St,  Fifth Floor,  Boston,  MA 02110-1301 USA
  
      As a special exception,  you may use this file  as part of a free software library without
      restriction.  Specifically,  if other files instantiate templates  or use macros or inline
      functions from this file, or you compile this file and link it with other files to produce
      an executable,  this file does not by itself cause the resulting executable to be covered
      by the GNU General Public License. This exception does not however invalidate any other
      reasons why the executable file might be covered by the GNU General Public License.
  */
  
  //------------------------------------------------------------------------
  // Test TBB mutexes when used with parallel_for.h
  //
  // Usage: test_Mutex.exe [-v] nthread
  //
  // The -v option causes timing information to be printed.
  //
  // Compile with _OPENMP and -openmp
  //------------------------------------------------------------------------
  #include "harness_defs.h"
  #include "tbb/spin_mutex.h"
  #include "tbb/critical_section.h"
  #include "tbb/spin_rw_mutex.h"
  #include "tbb/queuing_rw_mutex.h"
  #include "tbb/queuing_mutex.h"
  #include "tbb/mutex.h"
  #include "tbb/recursive_mutex.h"
  #include "tbb/null_mutex.h"
  #include "tbb/null_rw_mutex.h"
  #include "tbb/parallel_for.h"
  #include "tbb/blocked_range.h"
  #include "tbb/tick_count.h"
  #include "tbb/atomic.h"
  #include "harness.h"
  #include <cstdlib>
  #include <cstdio>
  #if _OPENMP
  #include "test/OpenMP_Mutex.h"
  #endif /* _OPENMP */
  #include "tbb/tbb_profiling.h"
  
  #ifndef TBB_TEST_LOW_WORKLOAD
      #define TBB_TEST_LOW_WORKLOAD TBB_USE_THREADING_TOOLS
  #endif
  
  // This test deliberately avoids a "using tbb" statement,
  // so that the error of putting types in the wrong namespace will be caught.
  
  template<typename M>
  struct Counter {
      typedef M mutex_type;
      M mutex;
      volatile long value;
  };
  
  //! Function object for use with parallel_for.h.
  template<typename C>
  struct AddOne: NoAssign {
      C& counter;
      /** Increments counter once for each iteration in the iteration space. */
      void operator()( tbb::blocked_range<size_t>& range ) const {
          for( size_t i=range.begin(); i!=range.end(); ++i ) {
              if( i&1 ) {
                  // Try implicit acquire and explicit release
                  typename C::mutex_type::scoped_lock lock(counter.mutex);
                  counter.value = counter.value+1;
                  lock.release();
              } else {
                  // Try explicit acquire and implicit release
                  typename C::mutex_type::scoped_lock lock;
                  lock.acquire(counter.mutex);
                  counter.value = counter.value+1;
              }
          }
      }
      AddOne( C& counter_ ) : counter(counter_) {}
  };
  
  //! Adaptor for using ISO C++0x style mutex as a TBB-style mutex.
  template<typename M>
  class TBB_MutexFromISO_Mutex {
      M my_iso_mutex;
  public:
      typedef TBB_MutexFromISO_Mutex mutex_type;
  
      class scoped_lock;
      friend class scoped_lock;
  
      class scoped_lock {
          mutex_type* my_mutex;
      public:
          scoped_lock() : my_mutex(NULL) {}
          scoped_lock( mutex_type& m ) : my_mutex(NULL) {
              acquire(m);
          }
          scoped_lock( mutex_type& m, bool is_writer ) : my_mutex(NULL) {
              acquire(m,is_writer);
          }
          void acquire( mutex_type& m ) {
              m.my_iso_mutex.lock();
              my_mutex = &m;
          }
          bool try_acquire( mutex_type& m ) {
              if( m.my_iso_mutex.try_lock() ) {
                  my_mutex = &m;
                  return true;
              } else {
                  return false;
              }
          }
          void release() {
              my_mutex->my_iso_mutex.unlock();
              my_mutex = NULL;
          }
  
          // Methods for reader-writer mutex
          // These methods can be instantiated only if M supports lock_read() and try_lock_read().
  
          void acquire( mutex_type& m, bool is_writer ) {
              if( is_writer ) m.my_iso_mutex.lock();
              else m.my_iso_mutex.lock_read();
              my_mutex = &m;
          }
          bool try_acquire( mutex_type& m, bool is_writer ) {
              if( is_writer ? m.my_iso_mutex.try_lock() : m.my_iso_mutex.try_lock_read() ) {
                  my_mutex = &m;
                  return true;
              } else {
                  return false;
              }
          }
          bool upgrade_to_writer() {
              my_mutex->my_iso_mutex.unlock();
              my_mutex->my_iso_mutex.lock();
              return false;
          }
          bool downgrade_to_reader() {
              my_mutex->my_iso_mutex.unlock();
              my_mutex->my_iso_mutex.lock_read();
              return false;
          }
          ~scoped_lock() {
              if( my_mutex )
                  release();
          }
      };
  
      static const bool is_recursive_mutex = M::is_recursive_mutex;
      static const bool is_rw_mutex = M::is_rw_mutex;
  };
  
  namespace tbb {
      namespace profiling {
          template<typename M>
          void set_name( const TBB_MutexFromISO_Mutex<M>&, const char* ) {}
      }
  }
  
  //! Generic test of a TBB mutex type M.
  /** Does not test features specific to reader-writer locks. */
  template<typename M>
  void Test( const char * name ) {
      REMARK("%s size == %d, time = ",name, sizeof(M));
      Counter<M> counter;
      counter.value = 0;
      tbb::profiling::set_name(counter.mutex, name);
  #if TBB_TEST_LOW_WORKLOAD
      const int n = 10000;
  #else
      const int n = 100000;
  #endif /* TBB_TEST_LOW_WORKLOAD */
      tbb::tick_count t0 = tbb::tick_count::now();
      tbb::parallel_for(tbb::blocked_range<size_t>(0,n,n/10),AddOne<Counter<M> >(counter));
      tbb::tick_count t1 = tbb::tick_count::now();
      REMARK("%g usec\n",(t1-t0).seconds());
      if( counter.value!=n )
          REPORT("ERROR for %s: counter.value=%ld\n",name,counter.value);
  }
  
  template<typename M, size_t N>
  struct Invariant {
      typedef M mutex_type;
      M mutex;
      const char* mutex_name;
      volatile long value[N];
      Invariant( const char* mutex_name_ ) :
          mutex_name(mutex_name_)
      {
          for( size_t k=0; k<N; ++k )
              value[k] = 0;
          tbb::profiling::set_name(mutex, mutex_name_);
      }
      ~Invariant() {
      }
      void update() {
          for( size_t k=0; k<N; ++k )
              ++value[k];
      }
      bool value_is( long expected_value ) const {
          long tmp;
          for( size_t k=0; k<N; ++k )
              if( (tmp=value[k])!=expected_value ) {
                  REPORT("ERROR: %ld!=%ld\n", tmp, expected_value);
                  return false;
              }
          return true;
      }
      bool is_okay() {
          return value_is( value[0] );
      }
  };
  
  //! Function object for use with parallel_for.h.
  template<typename I>
  struct TwiddleInvariant: NoAssign {
      I& invariant;
      TwiddleInvariant( I& invariant_ ) : invariant(invariant_) {}
  
      /** Increments counter once for each iteration in the iteration space. */
      void operator()( tbb::blocked_range<size_t>& range ) const {
          for( size_t i=range.begin(); i!=range.end(); ++i ) {
              //! Every 8th access is a write access
              const bool write = (i%8)==7;
              bool okay = true;
              bool lock_kept = true;
              if( (i/8)&1 ) {
                  // Try implicit acquire and explicit release
                  typename I::mutex_type::scoped_lock lock(invariant.mutex,write);
                  execute_aux(lock, i, write, /*ref*/okay, /*ref*/lock_kept);
                  lock.release();
              } else {
                  // Try explicit acquire and implicit release
                  typename I::mutex_type::scoped_lock lock;
                  lock.acquire(invariant.mutex,write);
                  execute_aux(lock, i, write, /*ref*/okay, /*ref*/lock_kept);
              }
              if( !okay ) {
                  REPORT( "ERROR for %s at %ld: %s %s %s %s\n",invariant.mutex_name, long(i),
                          write     ? "write,"                  : "read,",
                          write     ? (i%16==7?"downgrade,":"") : (i%8==3?"upgrade,":""),
                          lock_kept ? "lock kept,"              : "lock not kept,", // TODO: only if downgrade/upgrade
                          (i/8)&1   ? "impl/expl"               : "expl/impl" );
              }
          }
      }
  private:
      void execute_aux(typename I::mutex_type::scoped_lock & lock, const size_t i, const bool write, bool & okay, bool & lock_kept) const {
          if( write ) {
              long my_value = invariant.value[0];
              invariant.update();
              if( i%16==7 ) {
                  lock_kept = lock.downgrade_to_reader();
                  if( !lock_kept )
                      my_value = invariant.value[0] - 1;
                  okay = invariant.value_is(my_value+1);
              }
          } else {
              okay = invariant.is_okay();
              if( i%8==3 ) {
                  long my_value = invariant.value[0];
                  lock_kept = lock.upgrade_to_writer();
                  if( !lock_kept )
                      my_value = invariant.value[0];
                  invariant.update();
                  okay = invariant.value_is(my_value+1);
              }
          }
      }
  };
  
  /** This test is generic so that we can test any other kinds of ReaderWriter locks we write later. */
  template<typename M>
  void TestReaderWriterLock( const char * mutex_name ) {
      REMARK( "%s readers & writers time = ", mutex_name );
      Invariant<M,8> invariant(mutex_name);
  #if TBB_TEST_LOW_WORKLOAD
      const size_t n = 10000;
  #else
      const size_t n = 500000;
  #endif /* TBB_TEST_LOW_WORKLOAD */
      tbb::tick_count t0 = tbb::tick_count::now();
      tbb::parallel_for(tbb::blocked_range<size_t>(0,n,n/100),TwiddleInvariant<Invariant<M,8> >(invariant));
      tbb::tick_count t1 = tbb::tick_count::now();
      // There is either a writer or a reader upgraded to a writer for each 4th iteration
      long expected_value = n/4;
      if( !invariant.value_is(expected_value) )
          REPORT("ERROR for %s: final invariant value is wrong\n",mutex_name);
      REMARK( "%g usec\n", (t1-t0).seconds() );
  }
  
  #if _MSC_VER && !defined(__INTEL_COMPILER)
      // Suppress "conditional expression is constant" warning.
      #pragma warning( push )
      #pragma warning( disable: 4127 )
  #endif
  
  /** Test try_acquire_reader functionality of a non-reenterable reader-writer mutex */
  template<typename M>
  void TestTryAcquireReader_OneThread( const char * mutex_name ) {
      M tested_mutex;
      typename M::scoped_lock lock1;
      if( M::is_rw_mutex ) {
          if( lock1.try_acquire(tested_mutex, false) )
              lock1.release();
          else
              REPORT("ERROR for %s: try_acquire failed though it should not\n", mutex_name);
          {
              typename M::scoped_lock lock2(tested_mutex, false);   // read lock
              if( lock1.try_acquire(tested_mutex) )                 // attempt to acquire read
                  REPORT("ERROR for %s: try_acquire succeeded though it should not (1)\n", mutex_name);
              lock2.release();                                      // unlock
              lock2.acquire(tested_mutex, true);                    // write lock
              if( lock1.try_acquire(tested_mutex, false) )          // attempt to acquire read
                  REPORT("ERROR for %s: try_acquire succeeded though it should not (2)\n", mutex_name);
          }
          if( lock1.try_acquire(tested_mutex, false) )
              lock1.release();
          else
              REPORT("ERROR for %s: try_acquire failed though it should not\n", mutex_name);
      }
  }
  
  /** Test try_acquire functionality of a non-reenterable mutex */
  template<typename M>
  void TestTryAcquire_OneThread( const char * mutex_name ) {
      M tested_mutex;
      typename M::scoped_lock lock1;
      if( lock1.try_acquire(tested_mutex) )
          lock1.release();
      else
          REPORT("ERROR for %s: try_acquire failed though it should not\n", mutex_name);
      {
          if( M::is_recursive_mutex ) {
              typename M::scoped_lock lock2(tested_mutex);
              if( lock1.try_acquire(tested_mutex) )
                  lock1.release();
              else
                  REPORT("ERROR for %s: try_acquire on recursive lock failed though it should not\n", mutex_name);
              //windows.. -- both are recursive
          } else {
              typename M::scoped_lock lock2(tested_mutex);
              if( lock1.try_acquire(tested_mutex) )
                  REPORT("ERROR for %s: try_acquire succeeded though it should not (3)\n", mutex_name);
          }
      }
      if( lock1.try_acquire(tested_mutex) )
          lock1.release();
      else
          REPORT("ERROR for %s: try_acquire failed though it should not\n", mutex_name);
  }
  
  #if _MSC_VER && !defined(__INTEL_COMPILER)
      #pragma warning( pop )
  #endif
  
  const int RecurN = 4;
  int RecurArray[ RecurN ];
  tbb::recursive_mutex RecurMutex[ RecurN ];
  
  struct RecursiveAcquisition {
      /** x = number being decoded in base N
          max_lock = index of highest lock acquired so far
          mask = bit mask; ith bit set if lock i has been acquired. */
      void Body( size_t x, int max_lock=-1, unsigned int mask=0 ) const
      {
          int i = (int) (x % RecurN);
          bool first = (mask&1U<<i)==0;
          if( first ) {
              // first time to acquire lock
              if( i<max_lock )
                  // out of order acquisition might lead to deadlock, so stop
                  return;
              max_lock = i;
          }
  
          if( (i&1)!=0 ) {
              // acquire lock on location RecurArray[i] using explicit acquire
              tbb::recursive_mutex::scoped_lock r_lock;
              r_lock.acquire( RecurMutex[i] );
              int a = RecurArray[i];
              ASSERT( (a==0)==first, "should be either a==0 if it is the first time to acquire the lock or a!=0 otherwise" );
              ++RecurArray[i];
              if( x )
                  Body( x/RecurN, max_lock, mask|1U<<i );
              --RecurArray[i];
              ASSERT( a==RecurArray[i], "a is not equal to RecurArray[i]" );
  
              // release lock on location RecurArray[i] using explicit release; otherwise, use implicit one
              if( (i&2)!=0 ) r_lock.release();
          } else {
              // acquire lock on location RecurArray[i] using implicit acquire
              tbb::recursive_mutex::scoped_lock r_lock( RecurMutex[i] );
              int a = RecurArray[i];
  
              ASSERT( (a==0)==first, "should be either a==0 if it is the first time to acquire the lock or a!=0 otherwise" );
  
              ++RecurArray[i];
              if( x )
                  Body( x/RecurN, max_lock, mask|1U<<i );
              --RecurArray[i];
  
              ASSERT( a==RecurArray[i], "a is not equal to RecurArray[i]" );
  
              // release lock on location RecurArray[i] using explicit release; otherwise, use implicit one
              if( (i&2)!=0 ) r_lock.release();
          }
      }
  
      void operator()( const tbb::blocked_range<size_t> &r ) const
      {
          for( size_t x=r.begin(); x<r.end(); x++ ) {
              Body( x );
          }
      }
  };
  
  /** This test is generic so that we may test other kinds of recursive mutexes.*/
  template<typename M>
  void TestRecursiveMutex( const char * mutex_name )
  {
      for ( int i = 0; i < RecurN; ++i ) {
          tbb::profiling::set_name(RecurMutex[i], mutex_name);
      }
      tbb::tick_count t0 = tbb::tick_count::now();
      tbb::parallel_for(tbb::blocked_range<size_t>(0,10000,500), RecursiveAcquisition());
      tbb::tick_count t1 = tbb::tick_count::now();
      REMARK( "%s recursive mutex time = %g usec\n", mutex_name, (t1-t0).seconds() );
  }
  
  template<typename C>
  struct NullRecursive: NoAssign {
      void recurse_till( size_t i, size_t till ) const {
          if( i==till ) {
              counter.value = counter.value+1;
              return;
          }
          if( i&1 ) {
              typename C::mutex_type::scoped_lock lock2(counter.mutex);
              recurse_till( i+1, till );
              lock2.release();
          } else {
              typename C::mutex_type::scoped_lock lock2;
              lock2.acquire(counter.mutex);
              recurse_till( i+1, till );
          }
      }
  
      void operator()( tbb::blocked_range<size_t>& range ) const {
          typename C::mutex_type::scoped_lock lock(counter.mutex);
          recurse_till( range.begin(), range.end() );
      }
      NullRecursive( C& counter_ ) : counter(counter_) {
          ASSERT( C::mutex_type::is_recursive_mutex, "Null mutex should be a recursive mutex." );
      }
      C& counter;
  };
  
  template<typename M>
  struct NullUpgradeDowngrade: NoAssign {
      void operator()( tbb::blocked_range<size_t>& range ) const {
          typename M::scoped_lock lock2;
          for( size_t i=range.begin(); i!=range.end(); ++i ) {
              if( i&1 ) {
                  typename M::scoped_lock lock1(my_mutex, true) ;
                  if( lock1.downgrade_to_reader()==false )
                      REPORT("ERROR for %s: downgrade should always succeed\n", name);
              } else {
                  lock2.acquire( my_mutex, false );
                  if( lock2.upgrade_to_writer()==false )
                      REPORT("ERROR for %s: upgrade should always succeed\n", name);
                  lock2.release();
              }
          }
      }
  
      NullUpgradeDowngrade( M& m_, const char* n_ ) : my_mutex(m_), name(n_) {}
      M& my_mutex;
      const char* name;
  } ;
  
  template<typename M>
  void TestNullMutex( const char * name ) {
      Counter<M> counter;
      counter.value = 0;
      const int n = 100;
      REMARK("TestNullMutex<%s>",name);
      {
          tbb::parallel_for(tbb::blocked_range<size_t>(0,n,10),AddOne<Counter<M> >(counter));
      }
      counter.value = 0;
      {
          tbb::parallel_for(tbb::blocked_range<size_t>(0,n,10),NullRecursive<Counter<M> >(counter));
      }
      REMARK("\n");
  }
  
  template<typename M>
  void TestNullRWMutex( const char * name ) {
      REMARK("TestNullRWMutex<%s>",name);
      const int n = 100;
      M m;
      tbb::parallel_for(tbb::blocked_range<size_t>(0,n,10),NullUpgradeDowngrade<M>(m, name));
      REMARK("\n");
  }
  
  //! Test ISO C++0x compatibility portion of TBB mutex
  template<typename M>
  void TestISO( const char * name ) {
      typedef TBB_MutexFromISO_Mutex<M> tbb_from_iso;
      Test<tbb_from_iso>( name );
  }
  
  //! Test ISO C++0x try_lock functionality of a non-reenterable mutex */
  template<typename M>
  void TestTryAcquire_OneThreadISO( const char * name ) {
      typedef TBB_MutexFromISO_Mutex<M> tbb_from_iso;
      TestTryAcquire_OneThread<tbb_from_iso>( name );
  }
  
  //! Test ISO-like C++0x compatibility portion of TBB reader-writer mutex
  template<typename M>
  void TestReaderWriterLockISO( const char * name ) {
      typedef TBB_MutexFromISO_Mutex<M> tbb_from_iso;
      TestReaderWriterLock<tbb_from_iso>( name );
      TestTryAcquireReader_OneThread<tbb_from_iso>( name );
  }
  
  //! Test ISO C++0x compatibility portion of TBB recursive mutex
  template<typename M>
  void TestRecursiveMutexISO( const char * name ) {
      typedef TBB_MutexFromISO_Mutex<M> tbb_from_iso;
      TestRecursiveMutex<tbb_from_iso>(name);
  }
  
  #include "harness_tsx.h"
  #include "tbb/task_scheduler_init.h"
  
  #if __TBB_TSX_TESTING_ENABLED_FOR_THIS_COMPILER
  
  //! Function object for use with parallel_for.h to see if a transaction is actually attempted.
  tbb::atomic<size_t> n_transactions_attempted;
  template<typename C>
  struct AddOne_CheckTransaction: NoAssign {
      C& counter;
      /** Increments counter once for each iteration in the iteration space. */
      void operator()( tbb::blocked_range<size_t>& range ) const {
          for( size_t i=range.begin(); i!=range.end(); ++i ) {
              bool transaction_attempted = false;
              {
                typename C::mutex_type::scoped_lock lock(counter.mutex);
                if( IsInsideTx() ) transaction_attempted = true;
                counter.value = counter.value+1;
              }
              if( transaction_attempted ) ++n_transactions_attempted;
              __TBB_Pause(i);
          }
      }
      AddOne_CheckTransaction( C& counter_ ) : counter(counter_) {}
  };
  
  /* TestTransaction() checks if a speculative mutex actually uses transactions. */
  template<typename M>
  void TestTransaction( const char * name )
  {
      Counter<M> counter;
  #if TBB_TEST_LOW_WORKLOAD
      const int n = 100;
  #else
      const int n = 1000;
  #endif
      REMARK("TestTransaction with %s: ",name);
  
      n_transactions_attempted = 0;
      tbb::tick_count start, stop;
      for( int i=0; i<5 && n_transactions_attempted==0; ++i ) {
          counter.value = 0;
          start = tbb::tick_count::now();
          tbb::parallel_for(tbb::blocked_range<size_t>(0,n,2),AddOne_CheckTransaction<Counter<M> >(counter));
          stop = tbb::tick_count::now();
          if( counter.value!=n ) {
              REPORT("ERROR for %s: counter.value=%ld\n",name,counter.value);
              break;
          }
      }
  
      if( n_transactions_attempted==0 )
          REPORT( "ERROR: transactions were never attempted\n" );
      else
          REMARK("%d successful transactions in %6.6f seconds\n", (int)n_transactions_attempted, (stop - start).seconds());
  }
  #endif  /* __TBB_TSX_TESTING_ENABLED_FOR_THIS_COMPILER */
  
  int TestMain () {
      for( int p=MinThread; p<=MaxThread; ++p ) {
          tbb::task_scheduler_init init( p );
          REMARK( "testing with %d workers\n", static_cast<int>(p) );
  #if TBB_TEST_LOW_WORKLOAD
          // The amount of work is decreased in this mode to bring the length
          // of the runs under tools into the tolerable limits.
          const int n = 1;
  #else
          const int n = 3;
  #endif
          // Run each test several times.
          for( int i=0; i<n; ++i ) {
              TestNullMutex<tbb::null_mutex>( "Null Mutex" );
              TestNullMutex<tbb::null_rw_mutex>( "Null RW Mutex" );
              TestNullRWMutex<tbb::null_rw_mutex>( "Null RW Mutex" );
              Test<tbb::spin_mutex>( "Spin Mutex" );
              Test<tbb::speculative_spin_mutex>( "Spin Mutex/speculative" );
  #if _OPENMP
              Test<OpenMP_Mutex>( "OpenMP_Mutex" );
  #endif /* _OPENMP */
              Test<tbb::queuing_mutex>( "Queuing Mutex" );
              Test<tbb::mutex>( "Wrapper Mutex" );
              Test<tbb::recursive_mutex>( "Recursive Mutex" );
              Test<tbb::queuing_rw_mutex>( "Queuing RW Mutex" );
              Test<tbb::spin_rw_mutex>( "Spin RW Mutex" );
              Test<tbb::speculative_spin_rw_mutex>( "Spin RW Mutex/speculative" );
  
              TestTryAcquire_OneThread<tbb::spin_mutex>("Spin Mutex");
              TestTryAcquire_OneThread<tbb::speculative_spin_mutex>("Spin Mutex/speculative");
              TestTryAcquire_OneThread<tbb::queuing_mutex>("Queuing Mutex");
  #if USE_PTHREAD
              // under ifdef because on Windows tbb::mutex is reenterable and the test will fail
              TestTryAcquire_OneThread<tbb::mutex>("Wrapper Mutex");
  #endif /* USE_PTHREAD */
              TestTryAcquire_OneThread<tbb::recursive_mutex>( "Recursive Mutex" );
              TestTryAcquire_OneThread<tbb::spin_rw_mutex>("Spin RW Mutex"); // only tests try_acquire for writers
              TestTryAcquire_OneThread<tbb::speculative_spin_rw_mutex>("Spin RW Mutex/speculative"); // only tests try_acquire for writers
              TestTryAcquire_OneThread<tbb::queuing_rw_mutex>("Queuing RW Mutex"); // only tests try_acquire for writers
  
              TestTryAcquireReader_OneThread<tbb::spin_rw_mutex>("Spin RW Mutex");
              TestTryAcquireReader_OneThread<tbb::speculative_spin_rw_mutex>("Spin RW Mutex/speculative");
              TestTryAcquireReader_OneThread<tbb::queuing_rw_mutex>("Queuing RW Mutex");
  
              TestReaderWriterLock<tbb::queuing_rw_mutex>( "Queuing RW Mutex" );
              TestReaderWriterLock<tbb::spin_rw_mutex>( "Spin RW Mutex" );
              TestReaderWriterLock<tbb::speculative_spin_rw_mutex>( "Spin RW Mutex/speculative" );
  
              TestRecursiveMutex<tbb::recursive_mutex>( "Recursive Mutex" );
  
              // Test ISO C++11 interface
              TestISO<tbb::spin_mutex>( "ISO Spin Mutex" );
              TestISO<tbb::mutex>( "ISO Mutex" );
              TestISO<tbb::spin_rw_mutex>( "ISO Spin RW Mutex" );
              TestISO<tbb::recursive_mutex>( "ISO Recursive Mutex" );
              TestISO<tbb::critical_section>( "ISO Critical Section" );
              TestTryAcquire_OneThreadISO<tbb::spin_mutex>( "ISO Spin Mutex" );
  #if USE_PTHREAD
              // under ifdef because on Windows tbb::mutex is reenterable and the test will fail
              TestTryAcquire_OneThreadISO<tbb::mutex>( "ISO Mutex" );
  #endif /* USE_PTHREAD */
              TestTryAcquire_OneThreadISO<tbb::spin_rw_mutex>( "ISO Spin RW Mutex" );
              TestTryAcquire_OneThreadISO<tbb::recursive_mutex>( "ISO Recursive Mutex" );
              TestTryAcquire_OneThreadISO<tbb::critical_section>( "ISO Critical Section" );
              TestReaderWriterLockISO<tbb::spin_rw_mutex>( "ISO Spin RW Mutex" );
              TestRecursiveMutexISO<tbb::recursive_mutex>( "ISO Recursive Mutex" );
          }
      }
  
  #if __TBB_TSX_TESTING_ENABLED_FOR_THIS_COMPILER
      // additional test for speculative mutexes to see if we actually attempt lock elisions
      if( have_TSX() ) {
          tbb::task_scheduler_init init( MaxThread );
          TestTransaction<tbb::speculative_spin_mutex>( "Spin Mutex/speculative" );
          TestTransaction<tbb::speculative_spin_rw_mutex>( "Spin RW Mutex/speculative" );
      }
      else {
          REMARK("Hardware transactions not supported\n");
      }
  #endif
      return Harness::Done;
  }
  