ChangeLogTag:Thu Sep 7 16:15:24 2000 Carlos O'Ryan <coryan@uci.edu>

1 files changed, 164 insertions, 0 deletions

diff --git a/ace/Base_Thread_Adapter.h b/ace/Base_Thread_Adapter.h
new file mode 100644
index 00000000000..745611017d9
--- /dev/null
+++ b/ace/Base_Thread_Adapter.h
@@ -0,0 +1,164 @@
+// $Id$
+
+// ============================================================================
+//
+// = LIBRARY
+//    ace
+//
+// = FILENAME
+//    Base_Thread_Adapter.h
+//
+// = AUTHOR
+//    Carlos O'Ryan <coryan@uci.edu>
+//
+// ============================================================================
+
+#ifndef ACE_BASE_THREAD_ADAPTER_H
+#define ACE_BASE_THREAD_ADAPTER_H
+#include "ace/pre.h"
+
+#include "ace/config-all.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "ace/OS_Export.h"
+
+// Run the thread entry point for the <ACE_Thread_Adapter>.  This must
+// be an extern "C" to make certain compilers happy...
+#if defined (ACE_PSOS)
+extern "C" void ace_thread_adapter (unsigned long args);
+#else /* ! defined (ACE_PSOS) */
+extern "C" ACE_Export void *ace_thread_adapter (void *args);
+#endif /* ACE_PSOS */
+
+class ACE_OS_Export ACE_OS_Thread_Descriptor
+{
+  // = TITLE
+  //     Parent class of all ACE_Thread_Descriptor classes.
+  //
+  // =
+  //     Container for ACE_Thread_Descriptor members that are
+  //     used in ACE_OS.
+public:
+  long flags (void) const;
+  // Get the thread creation flags.
+
+protected:
+  ACE_OS_Thread_Descriptor (long flags = 0);
+  // For use by ACE_Thread_Descriptor.
+
+  long flags_;
+  // Keeps track of whether this thread was created "detached" or not.
+  // If a thread is *not* created detached then if someone calls
+  // <ACE_Thread_Manager::wait>, we need to join with that thread (and
+  // close down the handle).
+};
+
+class ACE_OS_Export ACE_Base_Thread_Adapter
+{
+  // = TITLE
+  //     Base class for all the Thread_Adapters.
+  //
+  // = DESCRIPTION
+  //     Converts a C++ function into a function <ace_thread_adapter>
+  //     function that can be called from a thread creation routine
+  //     (e.g., <pthread_create> or <_beginthreadex>) that expects an
+  //     extern "C" entry point.  This class also makes it possible to
+  //     transparently provide hooks to register a thread with an
+  //     <ACE_Thread_Manager>.
+  //     This class is used in <ACE_OS::thr_create>.  In general, the
+  //     thread that creates an object of this class is different from
+  //     the thread that calls <invoke> on this object.  Therefore,
+  //     the <invoke> method is responsible for deleting itself.
+public:
+  ACE_Base_Thread_Adapter (ACE_THR_FUNC user_func,
+                           void *arg,
+                           ACE_THR_C_FUNC entry_point = (ACE_THR_C_FUNC) ace_thread_adapter,
+                           ACE_OS_Thread_Descriptor *td = 0
+# if defined (ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS)
+                           , ACE_SEH_EXCEPT_HANDLER selector = 0
+                           , ACE_SEH_EXCEPT_HANDLER handler = 0
+# endif /* ACE_HAS_WIN32_STRUCTURAL_EXCEPTIONS */
+                      );
+  // Constructor.
+
+  virtual void *invoke (void) = 0;
+  // Virtual method invoked by the thread entry point.
+
+  ACE_THR_C_FUNC entry_point (void);
+  // Accessor for the C entry point function to the OS thread creation
+  // routine.
+
+  static void close_log_msg (void);
+  // Invoke the close_log_msg_hook, if it is present
+
+  static void sync_log_msg (const ACE_TCHAR *prog_name);
+  // Invoke the sync_log_msg_hook, if it is present
+
+  static ACE_OS_Thread_Descriptor *thr_desc_log_msg (void);
+  // Invoke the thr_desc_log_msg_hook, if it is present
+
+protected:
+  virtual ~ACE_Base_Thread_Adapter (void);
+  // Destructor, making it private ensures that objects of this class
+  // are allocated on the heap.
+
+  void inherit_log_msg (void);
+  // Inherit the logging features if the parent thread has an
+  // <ACE_Log_Msg>.
+
+private:
+  static ACE_INIT_LOG_MSG_HOOK init_log_msg_hook_;
+  static ACE_INHERIT_LOG_MSG_HOOK inherit_log_msg_hook_;
+  static ACE_CLOSE_LOG_MSG_HOOK close_log_msg_hook_;
+  static ACE_SYNC_LOG_MSG_HOOK sync_log_msg_hook_;
+  static ACE_THR_DESC_LOG_MSG_HOOK thr_desc_log_msg_hook_;
+  // The hooks to inherit and cleanup the Log_Msg attributes
+
+  static void set_log_msg_hooks (ACE_INIT_LOG_MSG_HOOK init_hook,
+                                 ACE_INHERIT_LOG_MSG_HOOK inherit_hook,
+                                 ACE_CLOSE_LOG_MSG_HOOK close_hook,
+                                 ACE_SYNC_LOG_MSG_HOOK sync_hook,
+                                 ACE_THR_DESC_LOG_MSG_HOOK thr_desc);
+  // Set the Log_Msg hooks
+
+  friend class ACE_Log_Msg;
+  // Allow the ACE_Log_Msg class to set its hooks.
+
+protected:
+  ACE_THR_FUNC user_func_;
+  // Thread startup function passed in by the user (C++ linkage).
+
+  void *arg_;
+  // Argument to thread startup function.
+
+  ACE_THR_C_FUNC entry_point_;
+  // Entry point to the underlying OS thread creation call (C
+  // linkage).
+
+  ACE_OS_Thread_Descriptor *thr_desc_;
+  // Optional thread descriptor.  Passing this pointer in will force
+  // the spawned thread to cache this location in <Log_Msg> and wait
+  // until <Thread_Manager> fills in all information in thread
+  // descriptor.
+
+  void *log_msg_attributes_;
+  // The ACE_Log_Msg attributes.
+
+  friend class ACE_Thread_Adapter_Has_Private_Destructor;
+  // Friend declaration to avoid compiler warning:  only defines a private
+  // destructor and has no friends.
+};
+
+# if defined (ACE_HAS_INLINED_OSCALLS)
+#   if defined (ACE_INLINE)
+#     undef ACE_INLINE
+#   endif /* ACE_INLINE */
+#   define ACE_INLINE inline
+#   include "ace/Base_Thread_Adapter.inl"
+# endif /* ACE_HAS_INLINED_OSCALLS */
+
+#include "ace/post.h"
+#endif /* ACE_BASE_THREAD_ADAPTER_H */