add front demo in this project

LFtid1056/cloudfront/code/log4cplus/thread/impl/tls.h

@@ -0,0 +1,193 @@
+// -*- C++ -*-
+//  Copyright (C) 2010-2017, Vaclav Haisman. All rights reserved.
+//  
+//  Redistribution and use in source and binary forms, with or without modifica-
+//  tion, are permitted provided that the following conditions are met:
+//  
+//  1. Redistributions of  source code must  retain the above copyright  notice,
+//     this list of conditions and the following disclaimer.
+//  
+//  2. Redistributions in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//  
+//  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+//  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+//  FITNESS  FOR A PARTICULAR  PURPOSE ARE  DISCLAIMED.  IN NO  EVENT SHALL  THE
+//  APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY DIRECT,
+//  INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLU-
+//  DING, BUT NOT LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS
+//  OF USE, DATA, OR  PROFITS; OR BUSINESS  INTERRUPTION)  HOWEVER CAUSED AND ON
+//  ANY  THEORY OF LIABILITY,  WHETHER  IN CONTRACT,  STRICT LIABILITY,  OR TORT
+//  (INCLUDING  NEGLIGENCE OR  OTHERWISE) ARISING IN  ANY WAY OUT OF THE  USE OF
+//  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef LOG4CPLUS_THREAD_IMPL_TLS_H
+#define LOG4CPLUS_THREAD_IMPL_TLS_H
+
+#include <log4cplus/config.hxx>
+
+#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
+#pragma once
+#endif
+
+#include <new>
+#include <cassert>
+#include <system_error>
+
+#if ! defined (INSIDE_LOG4CPLUS)
+#  error "This header must not be be used outside log4cplus' implementation files."
+#endif
+
+#ifdef LOG4CPLUS_USE_PTHREADS
+#  include <pthread.h>
+
+#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
+#  include <log4cplus/config/windowsh-inc.h>
+
+#elif defined (LOG4CPLUS_SINGLE_THREADED)
+#  include <vector>
+
+#endif
+
+
+namespace log4cplus { namespace thread { namespace impl {
+
+
+typedef void * tls_value_type;
+
+#ifdef LOG4CPLUS_USE_PTHREADS
+typedef pthread_key_t * tls_key_type;
+typedef void (* tls_init_cleanup_func_type)(void *);
+
+#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
+typedef DWORD tls_key_type;
+typedef PFLS_CALLBACK_FUNCTION tls_init_cleanup_func_type;
+
+#elif defined (LOG4CPLUS_SINGLE_THREADED)
+typedef std::size_t tls_key_type;
+typedef void (* tls_init_cleanup_func_type)(void *);
+
+#endif
+
+
+inline tls_key_type tls_init (tls_init_cleanup_func_type);
+inline tls_value_type tls_get_value (tls_key_type);
+inline void tls_set_value (tls_key_type, tls_value_type);
+inline void tls_cleanup (tls_key_type);
+
+
+#if defined (LOG4CPLUS_USE_PTHREADS)
+tls_key_type
+tls_init (tls_init_cleanup_func_type cleanupfunc)
+{
+    pthread_key_t * key = new pthread_key_t;
+    int ret = pthread_key_create (key, cleanupfunc);
+    if (LOG4CPLUS_UNLIKELY (ret != 0))
+        throw std::system_error(ret, std::system_category (),
+            "pthread_key_create() failed");
+    return key;
+}
+
+
+tls_value_type
+tls_get_value (tls_key_type key)
+{
+    return pthread_getspecific (*key);
+}
+
+
+void
+tls_set_value (tls_key_type key, tls_value_type value)
+{
+    pthread_setspecific(*key, value);
+}
+
+
+void
+tls_cleanup (tls_key_type key)
+{
+    pthread_key_delete (*key);
+    delete key;
+}
+
+
+#elif defined (LOG4CPLUS_USE_WIN32_THREADS)
+tls_key_type
+tls_init (tls_init_cleanup_func_type cleanupfunc)
+{
+    DWORD const slot = FlsAlloc (cleanupfunc);
+    if (LOG4CPLUS_UNLIKELY (slot == FLS_OUT_OF_INDEXES))
+    {
+        DWORD const eno = GetLastError ();
+        throw std::system_error (static_cast<int>(eno),
+            std::system_category (), "FlsAlloc() failed");
+    }
+    return slot;
+}
+
+
+tls_value_type tls_get_value (tls_key_type k)
+{
+    return FlsGetValue (k);
+}
+
+
+void
+tls_set_value (tls_key_type k, tls_value_type value)
+{
+    FlsSetValue (k, value);
+}
+
+
+void
+tls_cleanup (tls_key_type k)
+{
+    FlsFree (k);
+}
+
+
+#elif defined (LOG4CPLUS_SINGLE_THREADED)
+extern std::vector<tls_value_type> * tls_single_threaded_values;
+
+
+tls_key_type
+tls_init (tls_init_cleanup_func_type)
+{
+    if (! tls_single_threaded_values)
+        tls_single_threaded_values = new std::vector<tls_value_type>;
+    tls_key_type key = tls_single_threaded_values->size ();
+    tls_single_threaded_values->resize (key + 1);
+    return key;
+}
+
+
+tls_value_type
+tls_get_value (tls_key_type k)
+{
+    assert (k < tls_single_threaded_values->size ());
+    return (*tls_single_threaded_values)[k];
+}
+
+
+void
+tls_set_value (tls_key_type k, tls_value_type val)
+{
+    assert (k < tls_single_threaded_values->size ());
+    (*tls_single_threaded_values)[k] = val;
+}
+
+
+void
+tls_cleanup (tls_key_type k)
+{
+    assert (k < tls_single_threaded_values->size ());
+    (*tls_single_threaded_values)[k] = 0;
+}
+
+#endif
+
+
+} } } // namespace log4cplus { namespace thread { namespace impl {
+
+#endif // LOG4CPLUS_THREAD_IMPL_TLS_H