MsgCommonInfo& common = p_node->GetCommonInfo(); SPUserInfo& sp_user_info = p_node->GetUserInfo(); uint64_t imsi = sp_user_info->GetIMSI(); if(common.eci == 0) { common.eci = sp_user_info->GetEci(); } uint16_t tmp_enbid = common.tac; uint64_t imei = common.imei;请根据以上信息用C++现一个函数,要求维护一组key、value的关系。 key:imsi value:imsi、imei、common.eci、common.tac、last_time 要求,imsi相同时,以最后一条记录的value内容为准进行保存
时间: 2024-03-25 18:36:37 浏览: 12
可以使用std::unordered_map来维护key-value的关系,代码如下:
```c++
#include <unordered_map>
#include <chrono>
struct Record {
uint64_t imsi;
uint64_t imei;
uint64_t eci;
uint16_t tac;
std::chrono::system_clock::time_point last_time;
};
std::unordered_map<uint64_t, Record> records;
void updateRecord(uint64_t imsi, uint64_t imei, uint64_t eci, uint16_t tac) {
auto now = std::chrono::system_clock::now();
records[imsi] = {imsi, imei, eci, tac, now};
}
```
在以上的代码中,我们定义了一个struct Record来保存imsi、imei、eci、tac和最后更新时间。然后我们使用std::unordered_map来保存imsi和对应的Record。当需要更新某个imsi的记录时,直接调用updateRecord函数即可。如果这个imsi已经存在了,那么会直接覆盖之前的记录,保存最新的信息。
相关问题
void S1mmeSession::UpdateKqiInfo(S1APNode* p_node) { MsgCommonInfo& common = p_node->GetCommonInfo(); SPUserInfo& sp_user_info = p_node->GetUserInfo(); uint64_t imsi = sp_user_info->GetIMSI(); uint64_t imei = common.imei; uint32_t eci = common.eci == 0 ? sp_user_info->GetEci() : common.eci; uint16_t tac = common.tac; uint64_t last_time = current_time_.tv_sec; //IMSI_T imsi_key(imsi); //IMSI_Iter iter = ue_imsi_map_.find(imsi_key); //LogInfo("%d",common.imei); KqiValue& kqi_value = kqi_map_[imsi]; auto it = kqi_map_.find(imsi); if (it != kqi_map_.end()) { // 如果imsi已存在,则更新其value kqi_value.imsi = imsi; kqi_value.imei = imei; kqi_value.eci = eci; kqi_value.tac = tac; clock_gettime(CLOCK_REALTIME, &kqi_value.last_time); } LogInfo("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!!!!!!"); return; }添加代码,如果imsi不存在就正常添加
可以在`if (it != kqi_map_.end())`语句块之前添加如下代码:
```cpp
if (it == kqi_map_.end()) {
// 如果imsi不存在,则创建一个新的KqiValue对象并插入map中
KqiValue kqi_value_new;
kqi_value_new.imsi = imsi;
kqi_value_new.imei = imei;
kqi_value_new.eci = eci;
kqi_value_new.tac = tac;
clock_gettime(CLOCK_REALTIME, &kqi_value_new.last_time);
kqi_map_.insert({imsi, kqi_value_new});
return;
}
```
这样就可以在`imsi`不存在时创建一个新的`KqiValue`对象并将其插入到`kqi_map_`中。完整的函数代码如下:
```cpp
void S1mmeSession::UpdateKqiInfo(S1APNode* p_node) {
MsgCommonInfo& common = p_node->GetCommonInfo();
SPUserInfo& sp_user_info = p_node->GetUserInfo();
uint64_t imsi = sp_user_info->GetIMSI();
uint64_t imei = common.imei;
uint32_t eci = common.eci == 0 ? sp_user_info->GetEci() : common.eci;
uint16_t tac = common.tac;
uint64_t last_time = current_time_.tv_sec;
KqiValue& kqi_value = kqi_map_[imsi];
auto it = kqi_map_.find(imsi);
if (it == kqi_map_.end()) {
// 如果imsi不存在,则创建一个新的KqiValue对象并插入map中
KqiValue kqi_value_new;
kqi_value_new.imsi = imsi;
kqi_value_new.imei = imei;
kqi_value_new.eci = eci;
kqi_value_new.tac = tac;
clock_gettime(CLOCK_REALTIME, &kqi_value_new.last_time);
kqi_map_.insert({imsi, kqi_value_new});
return;
}
// 如果imsi已存在,则更新其value
kqi_value.imsi = imsi;
kqi_value.imei = imei;
kqi_value.eci = eci;
kqi_value.tac = tac;
clock_gettime(CLOCK_REALTIME, &kqi_value.last_time);
return;
}
```
void S1mmeSession::CtEncodeKqi(S1MMEKQI* kqi, S1APNode* p_node, uint8_t worker_id) { MsgCommonInfo& common = p_node->GetCommonInfo(); SPUserInfo& sp_user_info = p_node->GetUserInfo(); //获取 buf TlvEncoder* p_encoder_cur = g_p_encoder_[worker_id]; YdCDR_T* p_dst_data = (YdCDR_T*)malloc(sizeof(YdCDR_T)); if (p_dst_data == NULL) { return; } p_dst_data->not_associate = 0; if ((common.not_associate & 0x03) == 0x03) p_dst_data->not_associate = 1; p_encoder_cur->Set(p_dst_data->cdr_data,kMaxOneCdrBufLen); uint64_t imsi = sp_user_info->GetIMSI(); if(common.eci == 0) { common.eci = sp_user_info->GetEci(); } uint16_t tmp_enbid = common.tac;//>>8; //uint32_t tmp_enbid = (common.eci >> 8)&0xfffff; char xdrid_str[32]={0}; #ifdef OPEN_NEW_HUISU convert_xdrid_to_string(xdrid_str, kqi->xdrid, s_xdr_id_len); #else #ifdef OPENCTPR g4sigtran::pr::ProcBlock* p_blk = kqi->binary_block_in_xdr_.GetBlock(); p_blk->SerializeXid(xdrid_str, sizeof(xdrid_str)); #else uint64_t subcdrid = g_ct_xdr_id.GetXid(); //reverse subend; if(::is_open_reverse) { SetReverseSubend(p_node, subcdrid); } #ifdef ONE_THIRD_YUNNAN_MRO g_ct_xdr_id.Serialize((uint8_t*)xdrid_str, s_xdr_id_len, imsi); #else g_ct_xdr_id.Serialize((uint8_t*)xdrid_str, s_xdr_id_len); #endif #endif #endif struct timespec start_time = kqi->request_time_, end_time = kqi->response_time_; if (kqi->request_time_.tv_sec == 0) { if (!(kqi->response_time_.tv_sec == 0)) { start_time = kqi->response_time_; } else if (!(kqi->complete_time_.tv_sec == 0)) { start_time = kqi->complete_time_; } }要求:在S1mmeSession::CtEncodeKqi函数后面新加一个函数,来维护一组key、value的关系。 key为:imsi value为:imsi、imei、common.eci、common.tac、last_time 当imsi相同时,以最后一条记录的value内容为准进行保存;imsi不同时直接插入。请用C++实现该功能,需要用到哈希的知识点
像进行JPEG解压缩,并将解压缩后的图像存储到视频文件中。
```matlab
outputVideo =好的,根据您的要求,我可以为您提供以下C++代码来实现所需功能,其中使用了哈希表来维护key-value关系:
#include <unordered_map>
#include <ctime>
struct KqiInfo {
uint64 VideoWriter('compressed.avi');
open(outputVideo);
for k = 1:numFrames
decoded_img = decoded_imgs{k};
% 调_t imsi;
uint64_t imei;
uint32_t eci;
uint16_t tac;
timespec last_time;
};
std::unordered_map<uint64_t, KqiInfo> kqi_map;
void update_kqi_map(S1MMEKQI用jpegdec函数进行JPEG解压缩
img = jpegdec(decoded_img);
writeVideo(outputVideo,img);
end
close(output* kqi, S1APNode* p_node) {
MsgCommonInfo& common = p_node->GetCommonInfo();
SPUserInfo& sp_user_info = p_node->GetUserInfo();
uint64_t imsi = sp_user_info->GetIMSI();
uintVideo);
```
完整的代码如下:
```matlab
% 读取视频文件并将每一帧图像进行64_t imei = sp_user_info->GetIMEI();
uint32_t eci = common.eci;
uint16_t tacJPEG压缩
vidObj = VideoReader('sample.avi');
numFrames = vidObj.NumberOfFrames;
for k = 1:numFrames = common.tac;
timespec now;
clock_gettime(CLOCK_REALTIME, &now);
KqiInfo kqi_info = {imsi, imei, eci, tac, now};
kqi_map[imsi] = kqi_info;
}
在
img = read(vidObj, k);
compressed_img = jpegenc(img); % 调用jpegenc函数进行JPEG压缩原有的S1mmeSession::CtEncodeKqi函数中,调用update_kqi_map函数即可将相关信息保存到哈希表中。如果imsi已经存在,会自动覆盖原有记录;如果imsi不存在,则新,返回压缩后的图像
% 将压缩后的图像存储到数组中,用于后续的建一条记录。需要注意的是,本代码中使用的哈希表默认使用std::hash函数进行哈希,如果需要自定义哈希函数可以通过std::unordered_map的第三个模板参数传入。