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author	Pierre Pfister <ppfister@cisco.com>	2018-05-28 13:56:04 +0200
committer	Damjan Marion <dmarion.lists@gmail.com>	2018-05-28 15:01:55 +0000
commit	0318a113fd7848c76533027edbdee2697442a76e (patch)
tree	e34883e77846e71376c52322e512a9481ac06b38 /src/vppinfra/bitops.h
parent	1dc1b9c5314f5cdc3312475bcac233109c69c6d9 (diff)

Fix flowhash size computation for very large hash tables

Change-Id: Ieae4ff6429fc5bdcf0e243db40ab7ec00c30730a Signed-off-by: Pierre Pfister <ppfister@cisco.com>

Diffstat (limited to 'src/vppinfra/bitops.h')

0 files changed, 0 insertions, 0 deletions

{ color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

#ifndef SETTING_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define SETTING_H_62B23520_7C8E_11DE_8A39_0800200C9A66

#if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif


#include <memory>
#include <vector>
#include "yaml-cpp/noncopyable.h"

namespace YAML
{
	class SettingChangeBase;
	
	template <typename T>
	class Setting
	{
	public:
		Setting(): m_value() {}
		
		const T get() const { return m_value; }
		std::auto_ptr <SettingChangeBase> set(const T& value);
		void restore(const Setting<T>& oldSetting) {
			m_value = oldSetting.get();
		}
		
	private:
		T m_value;
	};

	class SettingChangeBase
	{
	public:
		virtual ~SettingChangeBase() {}
		virtual void pop() = 0;
	};
	
	template <typename T>
	class SettingChange: public SettingChangeBase
	{
	public:
		SettingChange(Setting<T> *pSetting): m_pCurSetting(pSetting) {
			// copy old setting to save its state
			m_oldSetting = *pSetting;
		}
		
		virtual void pop() {
			m_pCurSetting->restore(m_oldSetting);
		}

	private:
		Setting<T> *m_pCurSetting;
		Setting<T> m_oldSetting;
	};

	template <typename T>
	inline std::auto_ptr <SettingChangeBase> Setting<T>::set(const T& value) {
		std::auto_ptr <SettingChangeBase> pChange(new SettingChange<T> (this));
		m_value = value;
		return pChange;
	}
	
	class SettingChanges: private noncopyable
	{
	public:
		SettingChanges() {}
		~SettingChanges() { clear(); }
		
		void clear() {
			restore();
			
			for(setting_changes::const_iterator it=m_settingChanges.begin();it!=m_settingChanges.end();++it)
				delete *it;
			m_settingChanges.clear();
		}
		
		void restore() {
			for(setting_changes::const_iterator it=m_settingChanges.begin();it!=m_settingChanges.end();++it)
				(*it)->pop();
		}
		
		void push(std::auto_ptr <SettingChangeBase> pSettingChange) {
			m_settingChanges.push_back(pSettingChange.release());
		}
		
		// like std::auto_ptr - assignment is transfer of ownership
		SettingChanges& operator = (SettingChanges& rhs) {
			if(this == &rhs)
				return *this;
			
			clear();
			m_settingChanges = rhs.m_settingChanges;
			rhs.m_settingChanges.clear();
			return *this;
		}
		
	private:
		typedef std::vector <SettingChangeBase *> setting_changes;
		setting_changes m_settingChanges;
	};
}

#endif // SETTING_H_62B23520_7C8E_11DE_8A39_0800200C9A66


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