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39 lines
1007 B
C++
39 lines
1007 B
C++
#pragma once
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#include <cstring>
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#include <cerrno>
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#include <string_view>
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namespace llarp::quic
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{
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// Return result from a read or write operation that wraps an errno value. It is implicitly
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// convertible to bool to test for "is not an error" (which is the inverse of casting a plain
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// integer error code value to bool).
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struct io_result
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{
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// An error code, typically an errno value
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int error_code{0};
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// Returns true if this represent a successful result, i.e. an error_code of 0.
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operator bool() const
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{
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return error_code == 0;
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}
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// Returns true if this is an error value indicating a failure to write without blocking (only
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// applied to io_result's capturing an errno).
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bool
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blocked() const
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{
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return error_code == EAGAIN || error_code == EWOULDBLOCK;
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}
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// Returns the errno string for the given error code.
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std::string_view
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str() const
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{
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return strerror(error_code);
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}
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};
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} // namespace llarp::quic
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