mirror of
https://github.com/Icinga/icinga2.git
synced 2026-02-03 20:40:17 -05:00
29a5268961
I've used the following command to replace the original copyright header
lines in a C-style comment block:
```
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f -exec perl -pi -e 's{/\*[^*]*\(\s*c\s*\)\s*(\d{4})\s*Icinga\s+GmbH[^*]*\*/}{// SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n// SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
```
For files that use shell-style comments (#) like CMakeLists.txt, I've
used this command:
```
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f -exec perl -pi -e 's{#.*\(\s*c\s*\)\s(\d{4})\sIcinga\s+GmbH.*}{# SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n# SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
```
And for SQL files:
```
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f \( -name '*.sql' \) -exec perl -pi -e 's{--.*\(c\)\s(\d{4})\sIcinga\sGmbH.*}{-- SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n-- SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
$ find . \( -type d \( -name '\..*' -o -name third-party -o -name scripts -o -name prefix -o -name malloc -o -name server -o -name docker -o -name build -o -name doc \) -prune \) -o -type f \( -name '*.sql' \) -exec perl -pi -e 's{-- Copyright \(c\)\s(\d{4})\sIcinga\s+Development\sTeam.*}{-- SPDX-FileCopyrightText: \1 Icinga GmbH <https://icinga.com>\n-- SPDX-License-Identifier: GPL-2.0-or-later}gi' {} +
```
92 lines
2 KiB
C++
92 lines
2 KiB
C++
// SPDX-FileCopyrightText: 2012 Icinga GmbH <https://icinga.com>
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include "base/ringbuffer.hpp"
|
|
#include "base/objectlock.hpp"
|
|
#include "base/utility.hpp"
|
|
#include <algorithm>
|
|
|
|
using namespace icinga;
|
|
|
|
RingBuffer::RingBuffer(RingBuffer::SizeType slots)
|
|
: m_Slots(slots, 0), m_TimeValue(0), m_InsertedValues(0)
|
|
{ }
|
|
|
|
RingBuffer::SizeType RingBuffer::GetLength() const
|
|
{
|
|
std::unique_lock<std::mutex> lock(m_Mutex);
|
|
return m_Slots.size();
|
|
}
|
|
|
|
void RingBuffer::InsertValue(RingBuffer::SizeType tv, int num)
|
|
{
|
|
std::unique_lock<std::mutex> lock(m_Mutex);
|
|
|
|
InsertValueUnlocked(tv, num);
|
|
}
|
|
|
|
void RingBuffer::InsertValueUnlocked(RingBuffer::SizeType tv, int num)
|
|
{
|
|
RingBuffer::SizeType offsetTarget = tv % m_Slots.size();
|
|
|
|
if (m_TimeValue == 0)
|
|
m_InsertedValues = 1;
|
|
|
|
if (tv > m_TimeValue) {
|
|
RingBuffer::SizeType offset = m_TimeValue % m_Slots.size();
|
|
|
|
/* walk towards the target offset, resetting slots to 0 */
|
|
while (offset != offsetTarget) {
|
|
offset++;
|
|
|
|
if (offset >= m_Slots.size())
|
|
offset = 0;
|
|
|
|
m_Slots[offset] = 0;
|
|
|
|
if (m_TimeValue != 0 && m_InsertedValues < m_Slots.size())
|
|
m_InsertedValues++;
|
|
}
|
|
|
|
m_TimeValue = tv;
|
|
}
|
|
|
|
m_Slots[offsetTarget] += num;
|
|
}
|
|
|
|
int RingBuffer::UpdateAndGetValues(RingBuffer::SizeType tv, RingBuffer::SizeType span)
|
|
{
|
|
std::unique_lock<std::mutex> lock(m_Mutex);
|
|
|
|
return UpdateAndGetValuesUnlocked(tv, span);
|
|
}
|
|
|
|
int RingBuffer::UpdateAndGetValuesUnlocked(RingBuffer::SizeType tv, RingBuffer::SizeType span)
|
|
{
|
|
InsertValueUnlocked(tv, 0);
|
|
|
|
if (span > m_Slots.size())
|
|
span = m_Slots.size();
|
|
|
|
int off = m_TimeValue % m_Slots.size();
|
|
int sum = 0;
|
|
while (span > 0) {
|
|
sum += m_Slots[off];
|
|
|
|
if (off == 0)
|
|
off = m_Slots.size();
|
|
|
|
off--;
|
|
span--;
|
|
}
|
|
|
|
return sum;
|
|
}
|
|
|
|
double RingBuffer::CalculateRate(RingBuffer::SizeType tv, RingBuffer::SizeType span)
|
|
{
|
|
std::unique_lock<std::mutex> lock(m_Mutex);
|
|
|
|
int sum = UpdateAndGetValuesUnlocked(tv, span);
|
|
return sum / static_cast<double>(std::min(span, m_InsertedValues));
|
|
}
|