1 files changed, 140 insertions, 0 deletions
diff --git a/ACE/ace/Svc_Conf_Param.h b/ACE/ace/Svc_Conf_Param.h
new file mode 100644
index 00000000000..898b3b5cd07
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+++ b/ACE/ace/Svc_Conf_Param.h
@@ -0,0 +1,140 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file    Svc_Conf_Param.h
+ *
+ *  $Id$
+ *
+ *  @author Iliyan Jeliazkov <iliyan@ociweb.com>
+ */
+//=============================================================================
+
+
+#ifndef ACE_SVC_CONF_PARAM_H
+#define ACE_SVC_CONF_PARAM_H
+
+#include /**/ "ace/pre.h"
+
+// Globally visible macros, type decls, and extern var decls for
+// Service Configurator utility.
+
+#include "ace/Obstack.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+// Forward declarations.
+struct ace_yy_buffer_state;
+class ACE_Service_Gestalt;
+
+extern void ace_yy_delete_buffer (ace_yy_buffer_state *buffer);
+
+/**
+ * @class ACE_Svc_Conf_Param
+ *
+ * @brief An instance of this object will be passed down to the
+ *        yyparse() and yylex() functions.
+ *
+ * This is intended for internal use within ACE service configuration
+ * framework only.
+ *
+ * This class retains the state for a given parse/scan.  It primarily
+ * makes it possible to hold the static object lock in the scanner
+ * for as short a period of time as possible.  The resulting finer
+ * grained locking prevents deadlocks from occuring when scanning a
+ * `svc.conf' file and activating an ACE_Task, for example, as a
+ * result of processing the directives in that file.
+ */
+class ACE_Svc_Conf_Param
+{
+public:
+
+  enum SVC_CONF_PARAM_TYPE
+    {
+      /// The lexer will scan a file containing one or more directives.
+      SVC_CONF_FILE,
+
+      /// The lexer will scan a string containing a directive.
+      SVC_CONF_DIRECTIVE
+    };
+
+  /// Constructor
+  ACE_Svc_Conf_Param (ACE_Service_Gestalt* config, FILE *file)
+    : type (SVC_CONF_FILE),
+      yyerrno (0),
+      yylineno (1),
+      buffer (0),
+      obstack (),
+      config (config)
+  {
+    source.file = file;
+  }
+
+  /// Constructor
+  ACE_Svc_Conf_Param (ACE_Service_Gestalt* config, const ACE_TCHAR *directive)
+    : type (SVC_CONF_DIRECTIVE),
+      yyerrno (0),
+      yylineno (1),
+      buffer (0),
+      obstack (),
+      config (config)
+  {
+    source.directive = directive;
+  }
+
+  ~ACE_Svc_Conf_Param (void)
+  {
+    ace_yy_delete_buffer (this->buffer);
+  }
+
+public:
+
+  union
+  {
+    /// FILE stream from which directives will be scanned and parsed.
+    FILE *file;
+
+    /// String containing directive that will be scanned and parsed.
+    const ACE_TCHAR *directive;
+
+  } source;
+
+  /// Discriminant use to determine which union member to use.
+  SVC_CONF_PARAM_TYPE type;
+
+  /// Keeps track of the number of errors encountered so far.
+  int yyerrno;
+
+  /// Keeps track of the current line number for error-handling routine.
+  int yylineno;
+
+  /// Lexer buffer that corresponds to the current Service
+  /// Configurator file/direct scan.
+  ace_yy_buffer_state *buffer;
+
+  /// Obstack used for efficient memory allocation when
+  /// parsing/scanning a service configurator directive.
+  ACE_Obstack_T<ACE_TCHAR> obstack;
+
+  /// A reference to the configuration
+  ACE_Service_Gestalt *config;
+};
+
+
+// Parameter that is passed down to the yyparse() function, and
+// eventually to yylex().
+#define ACE_YYPARSE_PARAM ace_svc_conf_parameter
+
+#define ACE_YYLEX_PARAM ACE_YYPARSE_PARAM
+
+#define ACE_SVC_CONF_PARAM (static_cast<ACE_Svc_Conf_Param *> (ACE_YYLEX_PARAM))
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#include /**/ "ace/post.h"
+
+#endif /* ACE_SVC_CONF_PARAM_H */