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-// -*- C++ -*-
-
-//=============================================================================
-/**
- *  @file    Process_Mutex.h
- *
- *   A wrapper for mutexes that can be used across processes on the
- *   same host machine, as well as within a process, of course.
- *
- * @author Douglas C. Schmidt <d.schmidt@vanderbilt.edu>
- */
-//=============================================================================
-
-#ifndef ACE_PROCESS_MUTEX_H
-#define ACE_PROCESS_MUTEX_H
-
-#include /**/ "ace/pre.h"
-
-#include /**/ "ace/config-all.h"
-
-#if !defined (ACE_LACKS_PRAGMA_ONCE)
-# pragma once
-#endif /* ACE_LACKS_PRAGMA_ONCE */
-
-// To make it easier to carry the setting though this file as well as
-// Process_Mutex.{cpp inl}, set a private macro here.
-#ifdef _ACE_USE_SV_SEM
-#  undef _ACE_USE_SV_SEM
-#endif /* _ACE_USE_SV_SEM */
-
-#if defined (ACE_HAS_SYSV_IPC) && !defined (ACE_USES_MUTEX_FOR_PROCESS_MUTEX)
-#  include "ace/SV_Semaphore_Complex.h"
-#  define _ACE_USE_SV_SEM
-#else
-#  include "ace/Mutex.h"
-#endif /* ACE_HAS_SYSV_IPC && !ACE_USES_MUTEX_FOR_PROCESS_MUTEX */
-
-ACE_BEGIN_VERSIONED_NAMESPACE_DECL
-
-// Forward declarations
-class ACE_Time_Value;
-
-/**
- * @class ACE_Process_Mutex
- *
- * @brief A wrapper for mutexes that can be used across processes on
- * the same host machine, as well as within a process, of course.
- *
- * @attention The mechanism upon which @c ACE_Process_Mutex is based
- * can be configured at build time to be either @c ACE_SV_Semaphore_Complex
- * (on platforms that support it) or @c ACE_Mutex. On platforms that offer
- * System V IPC (the @c ACE_HAS_SYSV_IPC config macro is defined)
- * @c ACE_SV_Semaphore_Complex is the default because it is more convenient
- * and easy to use. @c ACE_Mutex is the default on all other platforms.
- * On platforms where ACE_SV_Semaphore_Complex is used by default, the
- * mechanism can be changed to ACE_Mutex when ACE is built by adding
- * @code
- *   #define ACE_USES_MUTEX_FOR_PROCESS_MUTEX
- * @endcode
- * to your @c config.h file.
- * @par
- * Consider these tradeoffs when evaluating whether or not to change
- * the default:
- *   - Some platforms (e.g., Pthreads and UI Threads) require interprocess
- *     mutexes to be allocated from shared memory. On these platforms, using
- *     ACE_Mutex as the underlying mechanism requires that ACE_Process_Mutex
- *     objects be allocated in shared memory. Using ACE_SV_Semaphore_Complex
- *     avoids this restriction.
- *   - System V IPC kernel parameters have a low default limit on some
- *     platforms. This would restrict the number of ACE_Process_Mutex objects
- *     that can be in use simultaneously when using ACE_SV_Semaphore_Complex.
- *   - If you require the ability to do a timed @c acquire(), you must
- *     use ACE_Mutex as the underlying mechanism because timed acquire does not
- *     work with System V semaphores.
- *   - When using ACE_Mutex on a Pthreads-based platform, an ACE_Process_Mutex
- *     object is deleted when the process which created the object destroys
- *     it, regardless of whether or not there are other processes still
- *     accessing the ACE_Process_Mutex. Using ACE_SV_Semaphore_Complex avoids
- *     this problem; the semaphore is destroyed when the last use of the
- *     object ends. For portable applications it is better to always ensure
- *     that the owner of the mutex destroys it after all other processes have
- *     stopped using it.
- */
-class ACE_Export ACE_Process_Mutex
-{
-public:
-  /**
-   * Create an ACE_Process_Mutex.
-   *
-   * @param name optional, null-terminated string containing the name of
-   * the object. Multiple users of the same @c ACE_Process_Mutex must use
-   * the same name to access the same object.  If not specified, a name
-   * is generated.
-   * @param arg optional, attributes to be used to initialize the mutex.
-   * If using @c ACE_SV_Semaphore_Complex as the underlying mechanism,
-   * this argument is ignored.
-   * @param mode optional, the protection mode for either the backing store
-   * file (for ACE_Mutex use) or the ACE_SV_Semaphore_Complex that's created.
-   */
-  ACE_Process_Mutex (const char *name = 0,
-                     void *arg = 0,
-                     mode_t mode = ACE_DEFAULT_FILE_PERMS);
-
-#if defined (ACE_HAS_WCHAR)
-  /**
-   * Create an ACE_Process_Mutex (@c wchar_t version)
-   *
-   * @param name optional, null-terminated string containing the name of
-   * the object. Multiple users of the same @c ACE_Process_Mutex must use
-   * the same name to access the same object. If not specified, a name
-   * is generated.
-   * @param arg optional, attributes to be used to initialize the mutex.
-   * If using @c ACE_SV_Semaphore_Complex as the underlying mechanism,
-   * this argument is ignored.
-   * @param mode optional, the protection mode for either the backing store
-   * file (for ACE_Mutex use) or the ACE_SV_Semaphore_Complex that's created.
-   */
-  ACE_Process_Mutex (const wchar_t *name,
-                     void *arg = 0,
-                     mode_t mode = ACE_DEFAULT_FILE_PERMS);
-#endif /* ACE_HAS_WCHAR */
-
-  /**
-   * Destructor.
-   *
-   * @note The destructor will not release an acquired mutex except
-   * on Windows.
-   */
-  ~ACE_Process_Mutex (void);
-
-  /**
-   * Explicitly destroy the mutex.  Note that only one thread should
-   * call this method since it doesn't protect against race
-   * conditions.
-   *
-   * @return 0 on success; -1 on failure.
-   */
-  int remove (void);
-
-  /**
-   * Acquire lock ownership (wait on queue if necessary).
-   *
-   * @return 0 on success; -1 on failure.
-   */
-  int acquire (void);
-
-  /**
-   * Acquire lock ownership, but timeout if lock if hasn't been
-   * acquired by given time.
-   *
-   * @param tv the absolute time until which the caller is willing to
-   * wait to acquire the lock.
-   *
-   * @return 0 on success; -1 on failure.
-   */
-  int acquire (ACE_Time_Value &tv);
-
-  /**
-   * Conditionally acquire lock (i.e., don't wait on queue).
-   *
-   * @return 0 on success; -1 on failure.  If the lock could not be acquired
-   * because someone else already had the lock, @c errno is set to @c EBUSY.
-   */
-  int tryacquire (void);
-
-  /// Release lock and unblock a thread at head of queue.
-  int release (void);
-
-  /// Acquire lock ownership (wait on queue if necessary).
-  int acquire_read (void);
-
-  /// Acquire lock ownership (wait on queue if necessary).
-  int acquire_write (void);
-
-  /**
-   * Conditionally acquire a lock (i.e., won't block).  Returns -1 on
-   * failure.  If we "failed" because someone else already had the
-   * lock, @c errno is set to @c EBUSY.
-   */
-  int tryacquire_read (void);
-
-  /**
-   * Conditionally acquire a lock (i.e., won't block).  Returns -1 on
-   * failure.  If we "failed" because someone else already had the
-   * lock, @c errno is set to @c EBUSY.
-   */
-  int tryacquire_write (void);
-
-  /**
-   * This is only here for consistency with the other synchronization
-   * APIs and usability with Lock adapters. Assumes the caller already has
-   * acquired the mutex and returns 0 in all cases.
-   */
-  int tryacquire_write_upgrade (void);
-
-#if !defined (_ACE_USE_SV_SEM)
-  /// Return the underlying mutex.
-  const ACE_mutex_t &lock (void) const;
-#endif /* !_ACE_USE_SV_SEM */
-
-  /// Get the name used for the lock, or null if no name is used.
-  const ACE_TCHAR *name () const;
-
-  /// If a file was created as the underlying storage for the mutex,
-  /// remove it from the filesystem.
-  static int unlink (const ACE_TCHAR *name);
-
-  /// Dump the state of an object.
-  void dump (void) const;
-
-  /// Declare the dynamic allocation hooks.
-  ACE_ALLOC_HOOK_DECLARE;
-
-private:
-  /// If the user does not provide a name we generate a unique name in
-  /// this buffer.
-  ACE_TCHAR name_[ACE_UNIQUE_NAME_LEN];
-
-  /// Create and return the unique name.
-  const ACE_TCHAR *unique_name (void);
-
-#if defined (_ACE_USE_SV_SEM)
-  /// We need this to get the right semantics...
-  ACE_SV_Semaphore_Complex lock_;
-#else
-  ACE_Mutex lock_;
-#endif /* _ACE_USE_SV_SEM */
-};
-
-ACE_END_VERSIONED_NAMESPACE_DECL
-
-#if defined (__ACE_INLINE__)
-#include "ace/Process_Mutex.inl"
-#endif /* __ACE_INLINE__ */
-
-#include /**/ "ace/post.h"
-
-#endif /* ACE_PROCESS_MUTEX_H */