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Wait for buffer to be empty before reallocating memory
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@ -136,8 +136,28 @@ PoolBufferPointer RingBufferPool::createPoolBuffer(const char* _buffer, size_t _
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});
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// Resize afterwards, we don't want to lose the validity of pointers
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// pointing at the old data
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// pointing at the old data, also wait until the memory pool is empty,
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// we don't want anyone point to the old allocation.
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if (m_poolBuffer.size() < realBufferSize) {
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const size_t tempInUseStartLocal = m_inUseStartOffset;
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const size_t remainingLocal =
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tempInUseStartLocal > m_inUseEndOffset || m_full ? static_cast<size_t>(
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tempInUseStartLocal - m_inUseEndOffset) :
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poolBufferSize - m_inUseEndOffset + tempInUseStartLocal;
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if (remainingLocal != realBufferSize) {
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m_condition.wait(lock, [this, realBufferSize, poolBufferSize] {
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const size_t tempInUseStartLocal = m_inUseStartOffset;
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const size_t remainingLocal =
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tempInUseStartLocal > m_inUseEndOffset || m_full ? static_cast<size_t>(
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tempInUseStartLocal - m_inUseEndOffset) :
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poolBufferSize - m_inUseEndOffset + tempInUseStartLocal;
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return remainingLocal == realBufferSize;
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});
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}
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m_poolBuffer.resize(realBufferSize);
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}
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}
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