ChangeLogTag:Thu May 22 02:28:28 UTC 2003 Don Hinton <dhinton@dresystems.com>dre_osh_03

1 files changed, 40 insertions, 5 deletions

diff --git a/ace/os_include/semaphore.h b/ace/os_include/semaphore.h
index b339693d660..d7a3d8751ee 100644
--- a/ace/os_include/semaphore.h
+++ b/ace/os_include/semaphore.h
@@ -2,19 +2,19 @@
 
 //=============================================================================
 /**
- *  @file    semaphore.h
+ *  @file    os_semaphore.h
  *
  *  semaphores (REALTIME)
  *
  *  $Id$
  *
- *  @author Don Hinton <dhinton@ieee.org>
+ *  @author Don Hinton <dhinton@dresystems.com>
  *  @author This code was originally in various places including ace/OS.h.
  */
 //=============================================================================
 
-#ifndef ACE_OS_INCLUDE_SEMAPHORE_H
-#define ACE_OS_INCLUDE_SEMAPHORE_H
+#ifndef ACE_OS_INCLUDE_OS_SEMAPHORE_H
+#define ACE_OS_INCLUDE_OS_SEMAPHORE_H
 
 #include "ace/pre.h"
 
@@ -30,5 +30,40 @@
 # include /**/ <semaphore.h>
 #endif /* !ACE_LACKS_SEMAPHORE_H */
 
+// Place all additions (especially function declarations) within extern "C" {}
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#if defined (ACE_HAS_POSIX_SEM)
+#  if !defined (SEM_FAILED) && !defined (ACE_LACKS_NAMED_POSIX_SEM)
+#    define SEM_FAILED ((sem_t *) -1)
+#  endif  /* !SEM_FAILED */
+
+   typedef struct
+   {
+     /// Pointer to semaphore handle.  This is allocated by ACE if we are
+     /// working with an unnamed POSIX semaphore or by the OS if we are
+     /// working with a named POSIX semaphore.
+     sem_t *sema_;
+
+     /// Name of the semaphore (if this is non-NULL then this is a named
+     /// POSIX semaphore, else its an unnamed POSIX semaphore).
+     char *name_;
+
+#  if defined (ACE_LACKS_NAMED_POSIX_SEM)
+     /// this->sema_ doesn't always get created dynamically if a platform
+     /// doesn't support named posix semaphores.  We use this flag to
+     /// remember if we need to delete <sema_> or not.
+     int new_sema_;
+#  endif /* ACE_LACKS_NAMED_POSIX_SEM */
+   } ACE_sema_t;
+#endif /* ACE_HAS_POSIX_SEM */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
 #include "ace/post.h"
-#endif /* ACE_OS_INCLUDE_SEMAPHORE_H */
+#endif /* ACE_OS_INCLUDE_OS_SEMAPHORE_H */