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Added timespec support for C++11 or later.

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This commit is contained in:
Takatoshi Kondo
2019-05-09 13:10:38 +09:00
parent ce088e7e0a
commit d3fecce359
5 changed files with 313 additions and 0 deletions
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140
include/msgpack/v1/adaptor/cpp11/timespec.hpp Normal file
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//
// MessagePack for C++ static resolution routine
//
// Copyright (C) 2018 KONDO Takatoshi
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef MSGPACK_V1_TYPE_CPP11_TIMESPEC_HPP
#define MSGPACK_V1_TYPE_CPP11_TIMESPEC_HPP
#include "msgpack/versioning.hpp"
#include "msgpack/adaptor/adaptor_base.hpp"
#include "msgpack/object.hpp"
#include <ctime>
namespace msgpack {
/// @cond
MSGPACK_API_VERSION_NAMESPACE(v1) {
/// @endcond
namespace adaptor {
template <>
struct convert<timespec> {
msgpack::object const& operator()(msgpack::object const& o, timespec& v) const {
if(o.type != msgpack::type::EXT) { throw msgpack::type_error(); }
if(o.via.ext.type() != -1) { throw msgpack::type_error(); }
switch(o.via.ext.size) {
case 4: {
uint32_t sec;
_msgpack_load32(uint32_t, o.via.ext.data(), &sec);
v.tv_sec = static_cast<decltype(v.tv_sec)>(sec);
v.tv_nsec = 0;
} break;
case 8: {
uint64_t value;
_msgpack_load64(uint64_t, o.via.ext.data(), &value);
v.tv_sec = static_cast<decltype(v.tv_sec)>(value & 0x00000003ffffffffLL);
v.tv_nsec= static_cast<decltype(v.tv_nsec)>(value >> 34);
} break;
case 12: {
uint32_t nanosec;
_msgpack_load32(uint32_t, o.via.ext.data(), &nanosec);
int64_t sec;
_msgpack_load64(int64_t, o.via.ext.data() + 4, &sec);
v.tv_sec = static_cast<decltype(v.tv_sec)>(sec);
v.tv_nsec = static_cast<decltype(v.tv_nsec)>(nanosec);
} break;
default:
throw msgpack::type_error();
}
return o;
}
};
template <>
struct pack<timespec> {
template <typename Stream>
msgpack::packer<Stream>& operator()(msgpack::packer<Stream>& o, const timespec& v) const {
if ((static_cast<uint64_t>(v.tv_sec) >> 34) == 0) {
uint64_t data64 = (static_cast<uint64_t>(v.tv_nsec) << 34) | static_cast<uint64_t>(v.tv_sec);
if ((data64 & 0xffffffff00000000L) == 0) {
// timestamp 32
o.pack_ext(4, -1);
uint32_t data32 = static_cast<uint32_t>(data64);
char buf[4];
_msgpack_store32(buf, data32);
o.pack_ext_body(buf, 4);
}
else {
// timestamp 64
o.pack_ext(8, -1);
char buf[8];
_msgpack_store64(buf, data64);
o.pack_ext_body(buf, 8);
}
}
else {
// timestamp 96
o.pack_ext(12, -1);
char buf[12];
_msgpack_store32(&buf[0], static_cast<uint32_t>(v.tv_nsec));
_msgpack_store64(&buf[4], v.tv_sec);
o.pack_ext_body(buf, 12);
}
return o;
}
};
template <>
struct object_with_zone<timespec> {
void operator()(msgpack::object::with_zone& o, const timespec& v) const {
if ((static_cast<uint64_t>(v.tv_sec) >> 34) == 0) {
uint64_t data64 = (static_cast<uint64_t>(v.tv_nsec) << 34) | static_cast<uint64_t>(v.tv_sec);
if ((data64 & 0xffffffff00000000L) == 0) {
// timestamp 32
o.type = msgpack::type::EXT;
o.via.ext.size = 4;
char* p = static_cast<char*>(o.zone.allocate_no_align(o.via.ext.size + 1));
p[0] = static_cast<char>(-1);
uint32_t data32 = static_cast<uint32_t>(data64);
_msgpack_store32(&p[1], data32);
o.via.ext.ptr = p;
}
else {
// timestamp 64
o.type = msgpack::type::EXT;
o.via.ext.size = 8;
char* p = static_cast<char*>(o.zone.allocate_no_align(o.via.ext.size + 1));
p[0] = static_cast<char>(-1);
_msgpack_store64(&p[1], data64);
o.via.ext.ptr = p;
}
}
else {
// timestamp 96
o.type = msgpack::type::EXT;
o.via.ext.size = 12;
char* p = static_cast<char*>(o.zone.allocate_no_align(o.via.ext.size + 1));
p[0] = static_cast<char>(-1);
_msgpack_store32(&p[1], static_cast<uint32_t>(v.tv_nsec));
_msgpack_store64(&p[1 + 4], v.tv_sec);
o.via.ext.ptr = p;
}
}
};
} // namespace adaptor
/// @cond
} // MSGPACK_API_VERSION_NAMESPACE(v1)
/// @endcond
} // namespace msgpack
#endif // MSGPACK_V1_TYPE_CPP11_TIMESPEC_HPP