ChangeLogTag:Mon Aug 4 03:26:30 UTC 2003 Don Hinton <dhinton@dresystems.com>

1 files changed, 143 insertions, 0 deletions

diff --git a/ace/Recursive_Thread_Mutex.cpp b/ace/Recursive_Thread_Mutex.cpp
new file mode 100644
index 00000000000..0644e4ba6f7
--- /dev/null
+++ b/ace/Recursive_Thread_Mutex.cpp
@@ -0,0 +1,143 @@
+/* -*- C++ -*- */
+/**
+ * @file Recursive_Thread_Mutex.cpp
+ *
+ * $Id$
+ *
+ * Originally in Synch.cpp
+ *
+ * @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
+ */
+
+#include "ace/Recursive_Thread_Mutex.h"
+
+#if defined (ACE_HAS_THREADS)
+
+#if !defined (__ACE_INLINE__)
+#include "ace/Recursive_Thread_Mutex.inl"
+#endif /* __ACE_INLINE__ */
+
+ACE_RCSID(ace, Recursive_Thread_Mutex, "$Id$")
+
+ACE_ALLOC_HOOK_DEFINE(ACE_Recursive_Thread_Mutex)
+
+ACE_Recursive_Thread_Mutex::ACE_Recursive_Thread_Mutex (const ACE_TCHAR *name,
+                                                        ACE_mutexattr_t *arg)
+  : removed_ (0)
+{
+  // ACE_TRACE ("ACE_Recursive_Thread_Mutex::ACE_Recursive_Thread_Mutex");
+#if defined (ACE_HAS_FSU_PTHREADS) && ! defined (ACE_WIN32)
+  // Initialize FSU pthreads package.  If called more than once,
+  // pthread_init does nothing and so does no harm.
+   pthread_init ();
+#endif  /*  ACE_HAS_FSU_PTHREADS && ! ACE_WIN32 */
+   if (ACE_OS::recursive_mutex_init (&this->lock_,
+                                     name,
+                                     arg) == -1)
+     ACE_ERROR ((LM_ERROR,
+                 ACE_LIB_TEXT ("%p\n"),
+                 ACE_LIB_TEXT ("recursive_mutex_init")));
+}
+
+ACE_Recursive_Thread_Mutex::~ACE_Recursive_Thread_Mutex (void)
+{
+  // ACE_TRACE ("ACE_Recursive_Thread_Mutex::~ACE_Recursive_Thread_Mutex");
+  this->remove ();
+}
+
+int
+ACE_Recursive_Thread_Mutex::remove (void)
+{
+// ACE_TRACE ("ACE_Recursive_Thread_Mutex::remove");
+  int result = 0;
+  if (this->removed_ == 0)
+    {
+      this->removed_ = 1;
+      result = ACE_OS::recursive_mutex_destroy (&this->lock_);
+    }
+  return result;
+}
+
+// The counter part of the following two functions for Win32 are
+// located in file Synch.i
+ACE_thread_t
+ACE_Recursive_Thread_Mutex::get_thread_id (void)
+{
+  // ACE_TRACE ("ACE_Recursive_Thread_Mutex::get_thread_id");
+#if defined (ACE_HAS_RECURSIVE_MUTEXES)
+  // @@ The structure CriticalSection in Win32 doesn't hold the thread
+  // handle of the thread that owns the lock.  However it is still not
+  // clear at this point how to translate a thread handle to its
+  // corresponding thread id.
+  errno = ENOTSUP;
+  return ACE_OS::NULL_thread;
+#else
+  ACE_thread_t owner_id;
+  ACE_OS::mutex_lock (&this->lock_.nesting_mutex_);
+  owner_id = this->lock_.owner_id_;
+  ACE_OS::mutex_unlock (&this->lock_.nesting_mutex_);
+  return owner_id;
+#endif /* ACE_WIN32 */
+}
+
+int
+ACE_Recursive_Thread_Mutex::get_nesting_level (void)
+{
+  // ACE_TRACE ("ACE_Recursive_Thread_Mutex::get_nesting_level");
+#if defined (ACE_HAS_WINCE) || defined (VXWORKS) || defined (ACE_PSOS)
+  ACE_NOTSUP_RETURN (-1);
+#elif defined (ACE_HAS_RECURSIVE_MUTEXES)
+  // Nothing inside of a CRITICAL_SECTION object should ever be
+  // accessed directly.  It is documented to change at any time.
+# if defined (ACE_WIN64)
+  // Things are different on Windows XP 64-bit
+  return this->lock_.LockCount + 1;
+# elif defined (ACE_WIN32)
+  // This is really a Win32-ism...
+  return this->lock_.RecursionCount;
+# else
+  ACE_NOTSUP_RETURN (-1);
+# endif /* ACE_HAS_RECURSIVE_MUTEXES */
+#else
+  int nesting_level = 0;
+  ACE_OS::mutex_lock (&this->lock_.nesting_mutex_);
+  nesting_level = this->lock_.nesting_level_;
+  ACE_OS::mutex_unlock (&this->lock_.nesting_mutex_);
+  return nesting_level;
+#endif /* !ACE_HAS_WINCE */
+}
+
+ACE_Recursive_Thread_Mutex::ACE_Recursive_Thread_Mutex (const ACE_Recursive_Thread_Mutex &)
+{
+}
+
+int
+ACE_Recursive_Thread_Mutex::acquire (void)
+{
+  return ACE_OS::recursive_mutex_lock (&this->lock_);
+}
+
+int
+ACE_Recursive_Thread_Mutex::release (void)
+{
+  return ACE_OS::recursive_mutex_unlock (&this->lock_);
+}
+
+int
+ACE_Recursive_Thread_Mutex::tryacquire (void)
+{
+  return ACE_OS::recursive_mutex_trylock (&this->lock_);
+}
+
+void
+ACE_Recursive_Thread_Mutex::dump (void) const
+{
+#if defined (ACE_HAS_DUMP)
+// ACE_TRACE ("ACE_Recursive_Thread_Mutex::dump");
+
+  ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
+  ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
+#endif /* ACE_HAS_DUMP */
+}
+
+#endif /* ACE_HAS_THREADS */