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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
commit | 0915b3ef56dfac3113cce55a59a5765dc94976be (patch) | |
tree | a8fea11d50b4f083e1bf0f90025ece7f0824784a /lib/base/fifo.hpp | |
parent | Initial commit. (diff) | |
download | icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.tar.xz icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.zip |
Adding upstream version 2.13.6.upstream/2.13.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/base/fifo.hpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/lib/base/fifo.hpp b/lib/base/fifo.hpp new file mode 100644 index 0000000..a8273c1 --- /dev/null +++ b/lib/base/fifo.hpp @@ -0,0 +1,48 @@ +/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */ + +#ifndef FIFO_H +#define FIFO_H + +#include "base/i2-base.hpp" +#include "base/stream.hpp" + +namespace icinga +{ + +/** + * A byte-based FIFO buffer. + * + * @ingroup base + */ +class FIFO final : public Stream +{ +public: + DECLARE_PTR_TYPEDEFS(FIFO); + + static const size_t BlockSize = 512; + + ~FIFO() override; + + size_t Peek(void *buffer, size_t count, bool allow_partial = false) override; + size_t Read(void *buffer, size_t count, bool allow_partial = false) override; + void Write(const void *buffer, size_t count) override; + void Close() override; + bool IsEof() const override; + bool SupportsWaiting() const override; + bool IsDataAvailable() const override; + + size_t GetAvailableBytes() const; + +private: + char *m_Buffer{nullptr}; + size_t m_DataSize{0}; + size_t m_AllocSize{0}; + size_t m_Offset{0}; + + void ResizeBuffer(size_t newSize, bool decrease); + void Optimize(); +}; + +} + +#endif /* FIFO_H */ |