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https://github.com/mutouyun/cpp-ipc.git
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6163618433
- is_multi_producer：sender无限制；否则仅允许一个 - is_multi_consumer：receiver个数上限依赖is_broadcast指定；否则仅允许一个 - is_broadcast：receiver个数上限为32（uint_t<32>位数）；否则无限制（uint_t<32>大小） 行为变更： 1. 在连接时根据模式检查sender/receiver是否超出上限，超出则返回false 2. 在send时确认是否允许发送（对receiver模式来说，send之前不会尝试确认sender个数） 3. 修正若干bug
65 lines
1.4 KiB
C++
Executable File
65 lines
1.4 KiB
C++
Executable File
#pragma once
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#include <cstddef>
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#include <cstdint>
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#include <limits> // std::numeric_limits
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#include <new>
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#include <utility>
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namespace ipc {
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// types
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using byte_t = std::uint8_t;
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template <std::size_t N>
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struct uint;
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template <> struct uint<8 > { using type = std::uint8_t ; };
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template <> struct uint<16> { using type = std::uint16_t; };
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template <> struct uint<32> { using type = std::uint32_t; };
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template <> struct uint<64> { using type = std::uint64_t; };
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template <std::size_t N>
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using uint_t = typename uint<N>::type;
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// constants
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enum : std::size_t {
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invalid_value = (std::numeric_limits<std::size_t>::max)(),
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data_length = 64,
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large_msg_limit = data_length,
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large_msg_cache = 32,
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default_timeout = 100 // ms
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};
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enum class relat { // multiplicity of the relationship
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single,
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multi
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};
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enum class trans { // transmission
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unicast,
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broadcast
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};
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// producer-consumer policy flag
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template <relat Rp, relat Rc, trans Ts>
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struct wr {};
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template <typename WR>
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struct relat_trait;
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template <relat Rp, relat Rc, trans Ts>
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struct relat_trait<wr<Rp, Rc, Ts>> {
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constexpr static bool is_multi_producer = (Rp == relat::multi);
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constexpr static bool is_multi_consumer = (Rc == relat::multi);
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constexpr static bool is_broadcast = (Ts == trans::broadcast);
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};
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template <template <typename> class Policy, typename Flag>
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struct relat_trait<Policy<Flag>> : relat_trait<Flag> {};
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} // namespace ipc
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