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src/hotspot/share/services/writeableFlags.hpp
changeset 47216 71c04702a3d5
parent 46560 388aa8d67c80
child 49857 31e07291ae29 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/services/writeableFlags.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_SERVICES_WRITEABLEFLAG_HPP
+#define SHARE_VM_SERVICES_WRITEABLEFLAG_HPP
+
+#include "runtime/globals.hpp"
+#include "utilities/formatBuffer.hpp"
+
+class WriteableFlags : AllStatic {
+private:
+  // a writeable flag setter accepting either 'jvalue' or 'char *' values
+  static Flag::Error set_flag(const char* name, const void* value, Flag::Error(*setter)(Flag*, const void*, Flag::Flags, FormatBuffer<80>&), Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // a writeable flag setter accepting 'char *' values
+  static Flag::Error set_flag_from_char(Flag* f, const void* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // a writeable flag setter accepting 'jvalue' values
+  static Flag::Error set_flag_from_jvalue(Flag* f, const void* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+
+  // set a boolean global flag
+  static Flag::Error set_bool_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a int global flag
+  static Flag::Error set_int_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a uint global flag
+  static Flag::Error set_uint_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a intx global flag
+  static Flag::Error set_intx_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a uintx global flag
+  static Flag::Error set_uintx_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a uint64_t global flag
+  static Flag::Error set_uint64_t_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a size_t global flag using value from AttachOperation
+  static Flag::Error set_size_t_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a boolean global flag
+  static Flag::Error set_bool_flag(const char* name, bool value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a int global flag
+  static Flag::Error set_int_flag(const char* name, int value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a uint global flag
+  static Flag::Error set_uint_flag(const char* name, uint value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a intx global flag
+  static Flag::Error set_intx_flag(const char* name, intx value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a uintx global flag
+  static Flag::Error set_uintx_flag(const char* name, uintx value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a uint64_t global flag
+  static Flag::Error set_uint64_t_flag(const char* name, uint64_t value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a size_t global flag using value from AttachOperation
+  static Flag::Error set_size_t_flag(const char* name, size_t value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+  // set a string global flag
+  static Flag::Error set_ccstr_flag(const char* name, const char* value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+
+public:
+  /* sets a writeable flag to the provided value
+   *
+   * - return status is one of the WriteableFlags::err enum values
+   * - an eventual error message will be generated to the provided err_msg buffer
+   */
+  static Flag::Error set_flag(const char* flag_name, const char* flag_value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+
+  /* sets a writeable flag to the provided value
+   *
+   * - return status is one of the WriteableFlags::err enum values
+   * - an eventual error message will be generated to the provided err_msg buffer
+   */
+  static Flag::Error set_flag(const char* flag_name, jvalue flag_value, Flag::Flags origin, FormatBuffer<80>& err_msg);
+};
+
+#endif /* SHARE_VM_SERVICES_WRITEABLEFLAG_HPP */
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