下面是一个随机的 packet(帧)插入函数,ASC升序,按 “packet_seq” 来控制成员之间的顺序,该函数优化了,倾向头、倾向尾。
即:
根据 packet_seq 可以得出,插入位置的最短距离,更偏向左侧、还是右侧,该函数实现仅供参考,若需要多线程访问,需要确保 “代码临服务器托管界区同步问题”。
#include
#include
#include
struct tag_packet {
uint32_t packet_seq;
};
void emplace_packet(std::list& queue, const tag_packet& packet) {
for (;;) {
auto tail = queue.begin();
if (tail == queue.end()) {
queue.emplace_back(packet);
break;
}
if (tail->packet_seq > packet.packet_seq) {
queue.emplace_front(packet);
break;
}
auto rtail = queue.rbegin();
if (rtail->packet_seq packet_seq) > (rtail->packet服务器托管_seq - packet.packet_seq)) {
auto position = std::upper_bound(queue.rbegin(), queue.rend(), packet,
[](const tag_packet& lhs, const tag_packet& rhs) noexcept {
return lhs.packet_seq > rhs.packet_seq;
});
queue.emplace(position.base(), packet);
}
else {
auto position = std::lower_bound(queue.begin(), queue.end(), packet,
[](const tag_packet& lhs, const tag_packet& rhs) noexcept {
return lhs.packet_seq packets;
tag_packet packet1 = { 100 };
tag_packet packet2 = { 50, };
tag_packet packet3 = { 200 };
tag_packet packet4 = { 150 };
tag_packet packet5 = { 75 };
tag_packet packet6 = { 115 };
tag_packet packet7 = { 45 };
tag_packet packet8 = { 135 };
tag_packet packet9 = { 195 };
emplace_packet(packets, packet1);
emplace_packet(packets, packet2);
emplace_packet(packets, packet3);
emplace_packet(packets, packet4);
emplace_packet(packets, packet5);
emplace_packet(packets, packet6);
emplace_packet(packets, packet7);
emplace_packet(packets, packet8);
emplace_packet(packets, packet9);
for (const auto& packet : packets) {
std::cout
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