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Update the RingBuffer class to use a regular mutex instead of ObjectLock

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This commit is contained in:
Gunnar Beutner 2018-01-10 16:44:48 +01:00
parent e26494bf08
commit ddf09263af
2 changed files with 24 additions and 9 deletions
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26
lib/base/ringbuffer.cpp
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@ -25,20 +25,24 @@
using namespace icinga; using namespace icinga;
RingBuffer::RingBuffer(RingBuffer::SizeType slots) RingBuffer::RingBuffer(RingBuffer::SizeType slots)
: Object(), m_Slots(slots, 0), m_TimeValue(0), m_InsertedValues(0) : m_Slots(slots, 0), m_TimeValue(0), m_InsertedValues(0)
{ } { }
RingBuffer::SizeType RingBuffer::GetLength() const RingBuffer::SizeType RingBuffer::GetLength() const
{ {
ObjectLock olock(this); boost::mutex::scoped_lock lock(m_Mutex);
return m_Slots.size(); return m_Slots.size();
} }
void RingBuffer::InsertValue(RingBuffer::SizeType tv, int num) void RingBuffer::InsertValue(RingBuffer::SizeType tv, int num)
{ {
ObjectLock olock(this); boost::mutex::scoped_lock lock(m_Mutex);
InsertValueUnlocked(tv, num);
}
void RingBuffer::InsertValueUnlocked(RingBuffer::SizeType tv, int num)
{
RingBuffer::SizeType offsetTarget = tv % m_Slots.size(); RingBuffer::SizeType offsetTarget = tv % m_Slots.size();
if (m_TimeValue == 0) if (m_TimeValue == 0)
@ -68,9 +72,14 @@ void RingBuffer::InsertValue(RingBuffer::SizeType tv, int num)
int RingBuffer::UpdateAndGetValues(RingBuffer::SizeType tv, RingBuffer::SizeType span) int RingBuffer::UpdateAndGetValues(RingBuffer::SizeType tv, RingBuffer::SizeType span)
{ {
ObjectLock olock(this); boost::mutex::scoped_lock lock(m_Mutex);
InsertValue(tv, 0); return UpdateAndGetValuesUnlocked(tv, span);
}
int RingBuffer::UpdateAndGetValuesUnlocked(RingBuffer::SizeType tv, RingBuffer::SizeType span)
{
InsertValueUnlocked(tv, 0);
if (span > m_Slots.size()) if (span > m_Slots.size())
span = m_Slots.size(); span = m_Slots.size();
@ -92,7 +101,8 @@ int RingBuffer::UpdateAndGetValues(RingBuffer::SizeType tv, RingBuffer::SizeType
double RingBuffer::CalculateRate(RingBuffer::SizeType tv, RingBuffer::SizeType span) double RingBuffer::CalculateRate(RingBuffer::SizeType tv, RingBuffer::SizeType span)
{ {
ObjectLock olock(this); boost::mutex::scoped_lock lock(m_Mutex);
int sum = UpdateAndGetValues(tv, span);
int sum = UpdateAndGetValuesUnlocked(tv, span);
return sum / static_cast<double>(std::min(span, m_InsertedValues)); return sum / static_cast<double>(std::min(span, m_InsertedValues));
} }

7
lib/base/ringbuffer.hpp
View File

@ -22,6 +22,7 @@
#include "base/i2-base.hpp" #include "base/i2-base.hpp"
#include "base/object.hpp" #include "base/object.hpp"
#include <boost/thread/mutex.hpp>
#include <vector> #include <vector>
namespace icinga namespace icinga
@ -32,7 +33,7 @@ namespace icinga
* *
* @ingroup base * @ingroup base
*/ */
class RingBuffer final : public Object class RingBuffer final
{ {
public: public:
DECLARE_PTR_TYPEDEFS(RingBuffer); DECLARE_PTR_TYPEDEFS(RingBuffer);
@ -47,9 +48,13 @@ public:
double CalculateRate(SizeType tv, SizeType span); double CalculateRate(SizeType tv, SizeType span);
private: private:
mutable boost::mutex m_Mutex;
std::vector<int> m_Slots; std::vector<int> m_Slots;
SizeType m_TimeValue; SizeType m_TimeValue;
SizeType m_InsertedValues; SizeType m_InsertedValues;
void InsertValueUnlocked(SizeType tv, int num);
int UpdateAndGetValuesUnlocked(SizeType tv, SizeType span);
}; };
} }