Changes made in preparation for new regex version.

[SVN r16141]

include/boost/regex/v3/regex_synch.hpp

@@ -0,0 +1,213 @@
+/*
+ *
+ * Copyright (c) 1998-2002
+ * Dr John Maddock
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Dr John Maddock makes no representations
+ * about the suitability of this software for any purpose.
+ * It is provided "as is" without express or implied warranty.
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         regex_synch.hpp
+  *   VERSION      see <boost/version.hpp>
+  *   DESCRIPTION: Thread synchronisation for regex code.
+  *                Note this is an internal header file included
+  *                by regex.hpp, do not include on its own.
+  */
+
+#ifndef BOOST_REGEX_SYNCH_HPP
+#define BOOST_REGEX_SYNCH_HPP
+
+#ifndef BOOST_REGEX_CONFIG_HPP
+#include <boost/regex/config.hpp>
+#endif
+
+#if defined(BOOST_HAS_THREADS)
+#  if defined(BOOST_HAS_WINTHREADS)
+#     include <windows.h>
+#  elif defined(BOOST_HAS_BETHREADS)
+#     include <OS.h>
+#     include <cassert>
+#  elif defined(BOOST_HAS_PTHREADS)
+#     include <pthread.h>
+#  else
+#     error "Unknown threading API"
+#  endif
+#endif
+
+
+namespace boost{
+   namespace re_detail{
+
+#ifdef __BORLANDC__
+   #pragma option push -a8 -b -Vx -Ve -pc
+#endif
+
+void BOOST_REGEX_CALL re_init_threads();
+void BOOST_REGEX_CALL re_free_threads();
+
+#ifdef BOOST_HAS_THREADS
+
+#  ifdef BOOST_HAS_BETHREADS
+
+typedef sem_id CRITICAL_SECTION;
+
+inline void BOOST_REGEX_CALL InitializeCriticalSection(CRITICAL_SECTION* ps)
+{
+    *ps = create_sem(1, "regex++");
+    assert(*ps > 0);
+}
+
+inline void BOOST_REGEX_CALL DeleteCriticalSection(CRITICAL_SECTION* ps)
+{
+    int t = delete_sem(*ps);
+    assert(t == B_NO_ERROR);
+}
+
+inline void BOOST_REGEX_CALL EnterCriticalSection(CRITICAL_SECTION* ps)
+{
+   status_t t = acquire_sem(*ps);
+   assert(t == B_NO_ERROR);
+}
+
+inline void BOOST_REGEX_CALL LeaveCriticalSection(CRITICAL_SECTION* ps)
+{
+    status_t t = release_sem(*ps);
+    assert(t == B_NO_ERROR);
+}
+
+#  elif defined(BOOST_HAS_PTHREADS)
+
+typedef pthread_mutex_t CRITICAL_SECTION;
+
+inline void BOOST_REGEX_CALL InitializeCriticalSection(CRITICAL_SECTION* ps)
+{
+   pthread_mutex_init(ps, 0);
+}
+
+inline void BOOST_REGEX_CALL DeleteCriticalSection(CRITICAL_SECTION* ps)
+{
+   pthread_mutex_destroy(ps);
+}
+
+inline void BOOST_REGEX_CALL EnterCriticalSection(CRITICAL_SECTION* ps)
+{
+   pthread_mutex_lock(ps);
+}
+
+inline void BOOST_REGEX_CALL LeaveCriticalSection(CRITICAL_SECTION* ps)
+{
+   pthread_mutex_unlock(ps);
+}
+
+#  elif !defined(BOOST_HAS_WINTHREADS)
+#    error "Unknown threading API"
+#  endif
+
+template <class Lock>
+class lock_guard
+{
+   typedef Lock lock_type;
+public:
+   lock_guard(lock_type& m, bool aq = true)
+      : mut(m), owned(false){ acquire(aq); }
+
+   ~lock_guard()
+   { acquire(false); }
+
+   void BOOST_REGEX_CALL acquire(bool aq = true)
+   {
+      if(aq && !owned)
+      {
+         mut.acquire(true);
+         owned = true;
+      }
+      else if(!aq && owned)
+      {
+         mut.acquire(false);
+         owned = false;
+      }
+   }
+private:
+   lock_type& mut;
+   bool owned;
+   // VC6 warning suppression:
+   lock_guard& operator=(const lock_guard&);
+};
+
+
+class critical_section
+{
+public:
+   critical_section()
+   { InitializeCriticalSection(&hmutex);}
+
+   critical_section(const critical_section&)
+   { InitializeCriticalSection(&hmutex);}
+
+   const critical_section& BOOST_REGEX_CALL operator=(const critical_section&)
+   {return *this;}
+
+   ~critical_section()
+   {DeleteCriticalSection(&hmutex);}
+
+private:
+
+   void BOOST_REGEX_CALL acquire(bool aq)
+   { if(aq) EnterCriticalSection(&hmutex);
+      else LeaveCriticalSection(&hmutex);
+   }
+
+   CRITICAL_SECTION hmutex;
+
+public:
+   typedef lock_guard<critical_section> ro_guard;
+   typedef lock_guard<critical_section> rw_guard;
+
+   friend class lock_guard<critical_section>;
+};
+
+inline bool BOOST_REGEX_CALL operator==(const critical_section&, const critical_section&)
+{
+   return false;
+}
+
+inline bool BOOST_REGEX_CALL operator<(const critical_section&, const critical_section&)
+{
+   return true;
+}
+
+typedef lock_guard<critical_section> cs_guard;
+
+BOOST_REGEX_DECL extern critical_section* p_re_lock;
+BOOST_REGEX_DECL extern unsigned int re_lock_count;
+
+#define BOOST_REGEX_GUARD(inst) boost::re_detail::critical_section::rw_guard g(inst);
+
+#else  // BOOST_HAS_THREADS
+
+#define BOOST_REGEX_GUARD(inst)
+
+#endif // BOOST_HAS_THREADS
+
+#ifdef __BORLANDC__
+  #pragma option pop
+#endif
+
+} // namespace re_detail
+} // namespace boost
+
+#endif // sentry
+
+
+
+
+
+