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main-复赛B榜.cpp
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main-复赛B榜.cpp
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#include <bits/stdc++.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#define unlikely(x) __builtin_expect(!!(x), 0)
using namespace std;
// #define TEST
#define RUN_SERVER
#define Num 2000000
#define NUM_THREADS 4 // solve and save thread nums
#define THREAD_NUM_RD 32 // read data and L2 thread num
#define THREAD_NUM_SAVE 162 // 线程数最少为5 以保证每个长度的数据都可以存, 目前是讲每个长度的数据分为了6份即 5*6=30
struct Buf_star_end
{
unsigned int star{};
unsigned int en{};
unsigned int cnt{};
unsigned int cnt_m{};
unsigned int data[300000]{};
long double data_m[100000]{};
} __attribute__((aligned((128))));
struct savedata
{
unsigned int id{};
unsigned int len{};
} __attribute__((aligned((128))));
struct runinfo
{
unsigned int thread_id{};
unsigned int start{};
unsigned int cnt{0};
unsigned int charcnt[THREAD_NUM_SAVE / 6][6]{};
unsigned int ANS[20000000][8]{};
// vector<unsigned int> idxs[5];
vector<vector<vector<unsigned int>>> idxs;
} __attribute__((aligned((128))));
#ifdef TEST
char datafile[] = "./data/test_data_f.txt";
char outputfile[] = "./projects/student/result.txt";
#endif
#ifdef RUN_SERVER
char datafile[] = "/data/test_data.txt";
char outputfile[] = "/projects/student/result.txt";
#endif
string res_length;
Buf_star_end buf_info[THREAD_NUM_RD];
runinfo runInfo[NUM_THREADS];
savedata saveData[THREAD_NUM_SAVE];
alignas(64) char *buf;
alignas(64) unsigned int test_data_size{0}, str_size{0}, Rawdata_cnt = 0, NodeCounter{0};
alignas(64) unsigned int max_id = THREAD_NUM_SAVE / 6;
alignas(64) unsigned int save_delta = 0;
alignas(64) unsigned int charcounter[Num];
alignas(64) unsigned int threadcharcounter[7] = {0};
alignas(64) unsigned int subcharcnt[THREAD_NUM_SAVE / 6][6] = {0};
alignas(64) long double Rawdata[Num * 2];
// vector<unsigned int> Rawdata;
alignas(64) long double Rawdata_money[Num];
alignas(64) char path_str_d[Num][15];
alignas(64) char path_str_next[Num][15];
alignas(64) unordered_map<long double, long double> remapping;
alignas(64) vector<vector<long double>> INVMappingdata;
alignas(64) vector<vector<long double>> Mappingdata;
//void *loaddata_mmapp_thr(void *Buf_info)
//{
// char cur;
// auto *info = (Buf_star_end *)Buf_info;
// unsigned int s = info->star, e = info->en, ttmp{0};
// long double db_tmp{0.0};
// for (; s < e; ++s)
// {
// cur = *(buf + s);
//
// if (cur >= '0' && cur <= '9')
// {
// ttmp = ttmp * 10 + (cur - '0');
// }
// else if (unlikely(cur == ','))
// {
// info->data[info->cnt++] = ttmp;
// ttmp = 0;
// }
// else if (unlikely(cur == '.')){
// unsigned short int count = 0;
// ++s;
// cur = *(buf + s);
// while (cur != '\n')
// {
// db_tmp = db_tmp * 10 + (cur - '0');
// ++s, ++count;
// cur = *(buf + s);
// }
// for (unsigned short int tt=0;tt<count;++tt)
// db_tmp *= 0.1;
// info->data_m[info->cnt_m++] = long double(ttmp) + db_tmp;
// ttmp = 0, db_tmp = 0.0;
// }
// else if (unlikely(cur == '\n'))
// {
// info->data_m[info->cnt_m++] = long double(ttmp);
// ttmp = 0;
// }
// }
// pthread_exit(nullptr);
//}
void *loaddata_mmapp_thr(void *Buf_info)
{
char cur, tmp[12];
int cnt{0};
auto *info = (Buf_star_end *)Buf_info;
unsigned int s = info->star, e = info->en;
for (; s < e; ++s)
{
cur = *(buf + s);
tmp[cnt++] = cur;
if (cur == ',')
{
tmp[cnt] = '\0';
info->data[info->cnt++] = stoi(tmp);
cnt = 0;
}
else if (unlikely(cur == '\n'))
{
tmp[cnt] = '\0';
info->data_m[info->cnt_m++] = stod(tmp);
cnt = 0;
}
}
pthread_exit(nullptr);
}
void loaddata_mmap()
{
// mmap test file
int fd = open(datafile, O_RDONLY);
unsigned int len = lseek(fd, 0, SEEK_END);
buf = (char *)mmap(nullptr, len, PROT_READ, MAP_PRIVATE, fd, 0);
close(fd);
pthread_attr_t attr;
void *status;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
pthread_t tids[THREAD_NUM_RD];
unsigned int last_p{0};
unsigned int p{0}, cnt_m{0};
for (unsigned int tc = 0; tc < THREAD_NUM_RD; ++tc)
{
p = ((tc + 1) * len) >> 5;
while (buf[p - 1] != '\n')
--p;
buf_info[tc].star = last_p;
buf_info[tc].en = p;
last_p = p;
pthread_create(&tids[tc], nullptr, loaddata_mmapp_thr,
(void *)&(buf_info[tc]));
}
pthread_attr_destroy(&attr);
for (unsigned long tid : tids)
{
pthread_join(tid, &status);
}
for (auto &cn : buf_info)
{
test_data_size += cn.cnt;
for (int ii = 0; ii < cn.cnt; ++ii)
{
Rawdata[Rawdata_cnt++] = (long double)cn.data[ii];
}
for (int jj = 0; jj < cn.cnt_m; ++jj)
{
Rawdata_money[cnt_m++] = cn.data_m[jj];
}
}
}
void quickSort(vector<long double> &arr, int left, int right)
{
if (left >= right - 1)
return;
int i, j;
long double base, base2, temp, temp2;
i = left, j = right - 1;
base = arr[left]; //取最左边的数为基准数
base2 = arr[left + 1];
while (i < j)
{
while (arr[j] >= base && i < j)
j -= 2;
while (arr[i] <= base && i < j)
i += 2;
if (i < j)
{
temp = arr[i];
temp2 = arr[i + 1];
arr[i] = arr[j];
arr[i + 1] = arr[j + 1];
arr[j] = temp;
arr[j + 1] = temp2;
}
}
//基准数归位
arr[left] = arr[i];
arr[left + 1] = arr[i + 1];
arr[i] = base;
arr[i + 1] = base2;
quickSort(arr, left, i - 1); //递归左边
quickSort(arr, i + 2, right); //递归右边
}
void start_mapping()
{
string trans;
unsigned int cnt_m{0};
long double f, s;
// unsigned int *array = coutSort(Rawdata, test_data_size);
// num = unique(array, array + test_data_size) - array;
auto temp2 = Rawdata;
unordered_set<long double> u_tmp(temp2, temp2 + Rawdata_cnt);
vector<long double> temp;
temp.assign(u_tmp.begin(), u_tmp.end());
sort(temp.begin(), temp.end());
for (long double &tmp : temp)
{
remapping[tmp] = NodeCounter;
trans = to_string((int)tmp);
strcpy(path_str_d[NodeCounter], (trans + ",").c_str());
strcpy(path_str_next[NodeCounter], (trans + "\n").c_str());
charcounter[NodeCounter] = trans.size() + 1;
++NodeCounter;
}
Mappingdata.reserve(NodeCounter);
INVMappingdata.reserve(NodeCounter);
for (unsigned int i = 0; i < test_data_size; i += 2)
{
if (Rawdata_money[cnt_m] != 0)
{
f = remapping[Rawdata[i]];
s = remapping[Rawdata[i + 1]];
Mappingdata[f].emplace_back(s);
Mappingdata[f].emplace_back(Rawdata_money[cnt_m]);
INVMappingdata[s].emplace_back(f);
INVMappingdata[s].emplace_back(Rawdata_money[cnt_m++]);
}
else
{
++cnt_m;
}
}
for (unsigned int i = 0; i < NodeCounter; i++)
{
if (unlikely(Mappingdata[i].empty() || INVMappingdata[i].empty()))
{
Mappingdata[i].clear();
}
else
{
quickSort(Mappingdata[i], 0, Mappingdata[i].size() - 1);
quickSort(INVMappingdata[i], 0, INVMappingdata[i].size() - 1);
}
}
save_delta = 5 * NodeCounter / THREAD_NUM_SAVE;
}
void *solution_threads(void *run_info)
{
auto *run = (runinfo *)run_info;
unsigned int start = run->start;
unsigned int layer[7]{0};
long double layer_money[7]{0};
unsigned int sz{0};
vector<long double> Invtemp;
vector<vector<long double>> L2 = vector<vector<long double>>(NodeCounter);
// vector<unsigned int> L2[NodeCounter];
bool is_repeat[NodeCounter]{false};
vector<unsigned int> mark_isconnet_2;
vector<bool> isconnet_2(NodeCounter, false);
vector<bool> isconnet_3(NodeCounter, false);
run->idxs = vector<vector<vector<unsigned int>>>(NodeCounter, vector<vector<unsigned int>>(6));
unsigned int save_id = 0;
unsigned int save_cnt = 0;
for (unsigned int i = start; i < NodeCounter; i += NUM_THREADS)
{
if ((i - save_cnt) >= save_delta && save_id < max_id - 1)
{
++save_id;
save_cnt = save_id * save_delta;
}
if (!Mappingdata[i].empty())
{
const unsigned int s1 = INVMappingdata[i].size();
for (unsigned int k = 0; k < s1; k += 2)
{
if (INVMappingdata[i][k] > i)
{
const unsigned int temp = INVMappingdata[i][k];
const long double y = INVMappingdata[i][k + 1];
const unsigned int s2 = INVMappingdata[temp].size();
for (unsigned int j = 0; j < s2; j += 2)
{
if (INVMappingdata[temp][j] > i)
{
const unsigned int temp2 = INVMappingdata[temp][j];
const long double y2 = INVMappingdata[temp][j + 1];
if (y2 <= (long double)5.0 * y && y <= (long double)3.0 * y2)
{
L2[temp2].emplace_back(temp);
L2[temp2].emplace_back(y2);
L2[temp2].emplace_back(y);
isconnet_2[temp2] = true;
mark_isconnet_2.emplace_back(temp2);
const unsigned int s3 = INVMappingdata[temp2].size();
for (unsigned int q = 0; q < s3; q += 2)
{
if (INVMappingdata[temp2][q] > i)
{
const unsigned int temp3 = INVMappingdata[temp2][q];
const long double y3 = INVMappingdata[temp2][q + 1];
if (y3 <= (long double)5.0 * y2 && y2 <= (long double)3.0 * y3)
{
isconnet_3[temp3] = true;
}
}
}
}
}
}
}
}
const unsigned int l2_size = Mappingdata[i].size();
for (unsigned int l2 = 0; l2 < l2_size; l2 += 2)
{
is_repeat[i] = true;
layer[0] = Mappingdata[i][l2];
if (layer[0] < i || is_repeat[layer[0]])
continue;
is_repeat[layer[0]] = true;
layer_money[0] = Mappingdata[i][l2 + 1];
if (isconnet_2[layer[0]])
{
Invtemp = L2[layer[0]];
sz = Invtemp.size();
for (unsigned int idx = 0; idx < sz; idx += 3)
{
if (is_repeat[(unsigned int)Invtemp[idx]])
continue;
const long double y = Invtemp[idx + 1];
if (layer_money[0] <= (long double)5.0 * y && y <= (long double)3.0 * layer_money[0])
{
const long double y1 = Invtemp[idx + 2];
if (y1 <= (long double)5.0 * layer_money[0] && layer_money[0] <= (long double)3.0 * y1)
{
run->ANS[run->cnt][0] = i;
run->ANS[run->cnt][1] = layer[0];
run->ANS[run->cnt][2] = Invtemp[idx];
run->charcnt[save_id][0] =
run->charcnt[save_id][0] + charcounter[i] + charcounter[layer[0]] +
charcounter[(unsigned int)Invtemp[idx]];
run->idxs[i][0].emplace_back(run->cnt);
++run->cnt;
}
}
}
}
const unsigned int l3_size = Mappingdata[layer[0]].size();
for (unsigned int l3 = 0; l3 < l3_size; l3 += 2)
{
layer[1] = Mappingdata[layer[0]][l3];
if (layer[1] < i || is_repeat[layer[1]])
continue;
layer_money[1] = Mappingdata[layer[0]][l3 + 1];
if (layer_money[0] <= (long double)5.0 * layer_money[1] && layer_money[1] <= (long double)3.0 * layer_money[0])
//if (div >= 0.2 && div <= 3)
{
is_repeat[layer[1]] = true;
if (isconnet_2[layer[1]])
{
Invtemp = L2[layer[1]];
sz = Invtemp.size();
for (unsigned int idx = 0; idx < sz; idx += 3)
{
// tempP = Invtemp[idx];
if (is_repeat[(unsigned int)Invtemp[idx]])
continue;
const long double ttm = Invtemp[idx + 1];
if (layer_money[1] <= (long double)5.0 * ttm && ttm <= (long double)3.0 * layer_money[1])
//if (div >= 0.2 && div <= 3)
{
const long double ttm1 = Invtemp[idx + 2];
if (ttm1 <= (long double)5.0 * layer_money[0] && layer_money[0] <= (long double)3.0 * ttm1)
{
run->ANS[run->cnt][0] = i;
run->ANS[run->cnt][1] = layer[0];
run->ANS[run->cnt][2] = layer[1];
run->ANS[run->cnt][3] = Invtemp[idx];
run->charcnt[save_id][1] =
run->charcnt[save_id][1] + charcounter[i] + charcounter[layer[0]] +
charcounter[layer[1]] +
charcounter[(unsigned int)Invtemp[idx]];
run->idxs[i][1].emplace_back(run->cnt);
++run->cnt;
}
}
}
}
const unsigned int l4_size = Mappingdata[layer[1]].size();
for (unsigned int l4 = 0; l4 < l4_size; l4 += 2)
{
layer[2] = Mappingdata[layer[1]][l4];
if (layer[2] <= i || is_repeat[layer[2]])
continue;
layer_money[2] = Mappingdata[layer[1]][l4 + 1];
if (layer_money[1] <= (long double)5.0 * layer_money[2] && layer_money[2] <= (long double)3.0 * layer_money[1])
{
is_repeat[layer[2]] = true;
if (isconnet_2[layer[2]])
{
Invtemp = L2[layer[2]];
sz = Invtemp.size();
for (unsigned int idx = 0; idx < sz; idx += 3)
{
if (is_repeat[(unsigned int)Invtemp[idx]])
continue;
const long double ttm2 = Invtemp[idx + 1];
if (layer_money[2] <= (long double)5.0 * ttm2 && ttm2 <= (long double)3.0 * layer_money[2])
{
const long double ttm3 = Invtemp[idx + 2];
if (ttm3 <= (long double)5.0 * layer_money[0] && layer_money[0] <= (long double)3.0 * ttm3)
{
run->ANS[run->cnt][0] = i;
run->ANS[run->cnt][1] = layer[0];
run->ANS[run->cnt][2] = layer[1];
run->ANS[run->cnt][3] = layer[2];
run->ANS[run->cnt][4] = Invtemp[idx];
run->charcnt[save_id][2] =
run->charcnt[save_id][2] + charcounter[i] + charcounter[layer[0]] +
charcounter[layer[1]] + charcounter[layer[2]] +
charcounter[(unsigned int)Invtemp[idx]];
run->idxs[i][2].emplace_back(run->cnt);
++run->cnt;
}
}
}
}
const unsigned int l5_size = Mappingdata[layer[2]].size();
for (unsigned int l5 = 0; l5 < l5_size; l5 += 2)
{
layer[3] = Mappingdata[layer[2]][l5];
if (layer[3] <= i || is_repeat[layer[3]])
continue;
layer_money[3] = Mappingdata[layer[2]][l5 + 1];
if (layer_money[2] <= (long double)5.0 * layer_money[3] && layer_money[3] <= (long double)3.0 * layer_money[2])
{
is_repeat[layer[3]] = true;
if (isconnet_2[layer[3]])
{
Invtemp = L2[layer[3]];
sz = Invtemp.size();
for (unsigned int idx = 0; idx < sz; idx += 3)
{
if (is_repeat[(unsigned int)Invtemp[idx]])
continue;
const long double ttm4 = Invtemp[idx + 1];
if (layer_money[3] <= (long double)5.0 * ttm4 && ttm4 <= (long double)3.0 * layer_money[3])
{
const long double ttm5 = Invtemp[idx + 2];
if (ttm5 <= (long double)5.0 * layer_money[0] && layer_money[0] <= (long double)3.0 * ttm5)
{
run->ANS[run->cnt][0] = i;
run->ANS[run->cnt][1] = layer[0];
run->ANS[run->cnt][2] = layer[1];
run->ANS[run->cnt][3] = layer[2];
run->ANS[run->cnt][4] = layer[3];
run->ANS[run->cnt][5] = Invtemp[idx];
run->charcnt[save_id][3] =
run->charcnt[save_id][3] + charcounter[i] + charcounter[layer[0]] +
charcounter[layer[1]] + charcounter[layer[2]] +
charcounter[layer[3]] +
charcounter[(unsigned int)Invtemp[idx]];
run->idxs[i][3].emplace_back(run->cnt);
++run->cnt;
}
}
}
}
const unsigned int l6_size = Mappingdata[layer[3]].size();
for (unsigned int l6 = 0; l6 < l6_size; l6 += 2)
{
layer[4] = Mappingdata[layer[3]][l6];
if (layer[4] <= i || is_repeat[layer[4]])
continue;
layer_money[4] = Mappingdata[layer[3]][l6 + 1];
if (layer_money[3] <= (long double)5.0 * layer_money[4] && layer_money[4] <= (long double)3.0 * layer_money[3])
{
is_repeat[layer[4]] = true;
if (isconnet_2[layer[4]])
{
Invtemp = L2[layer[4]];
sz = Invtemp.size();
for (unsigned int idx = 0; idx < sz; idx += 3)
{
if (is_repeat[(unsigned int)Invtemp[idx]])
continue;
const long double ttm5 = Invtemp[idx + 1];
if (layer_money[4] <= (long double)5.0 * ttm5 && ttm5 <= (long double)3.0 * layer_money[4])
{
const long double ttm6 = Invtemp[idx + 2];
if (ttm6 <= (long double)5.0 * layer_money[0] && layer_money[0] <= (long double)3.0 * ttm6)
{
run->ANS[run->cnt][0] = i;
run->ANS[run->cnt][1] = layer[0];
run->ANS[run->cnt][2] = layer[1];
run->ANS[run->cnt][3] = layer[2];
run->ANS[run->cnt][4] = layer[3];
run->ANS[run->cnt][5] = layer[4];
run->ANS[run->cnt][6] = Invtemp[idx];
run->charcnt[save_id][4] =
run->charcnt[save_id][4] + charcounter[i] +
charcounter[layer[0]] + charcounter[layer[1]] +
charcounter[layer[2]] + charcounter[layer[3]] +
charcounter[layer[4]] + charcounter[(unsigned int)Invtemp[idx]];
run->idxs[i][4].emplace_back(run->cnt);
++run->cnt;
}
}
}
}
if (isconnet_3[layer[4]])
{
const unsigned int l7_size = Mappingdata[layer[4]].size();
for (unsigned int l7 = 0; l7 < l7_size; l7 += 2)
{
layer[5] = Mappingdata[layer[4]][l7];
if (layer[5] <= i || is_repeat[layer[5]])
continue;
layer_money[5] = Mappingdata[layer[4]][l7 + 1];
if (layer_money[4] <= (long double)5.0 * layer_money[5] && layer_money[5] <= (long double)3.0 * layer_money[4])
{
is_repeat[layer[5]] = true;
if (isconnet_2[layer[5]])
{
Invtemp = L2[layer[5]];
sz = Invtemp.size();
for (unsigned int idx = 0; idx < sz; idx += 3)
{
if (is_repeat[(unsigned int)Invtemp[idx]])
continue;
const long double ttm7 = Invtemp[idx + 1];
if (layer_money[5] <= (long double)5.0 * ttm7 && ttm7 <= (long double)3.0 * layer_money[5])
{
const long double ttm8 = Invtemp[idx + 2];
if (ttm8 <= (long double)5.0 * layer_money[0] && layer_money[0] <= (long double)3.0 * ttm8)
{
run->ANS[run->cnt][0] = i;
run->ANS[run->cnt][1] = layer[0];
run->ANS[run->cnt][2] = layer[1];
run->ANS[run->cnt][3] = layer[2];
run->ANS[run->cnt][4] = layer[3];
run->ANS[run->cnt][5] = layer[4];
run->ANS[run->cnt][6] = layer[5];
run->ANS[run->cnt][7] = Invtemp[idx];
run->charcnt[save_id][5] =
run->charcnt[save_id][5] + charcounter[i] +
charcounter[layer[0]] + charcounter[layer[1]] +
charcounter[layer[2]] + charcounter[layer[3]] +
charcounter[layer[4]] + charcounter[layer[5]] +
charcounter[(unsigned int)Invtemp[idx]];
run->idxs[i][5].emplace_back(run->cnt);
++run->cnt;
}
}
}
}
}
is_repeat[layer[5]] = false;
}
}
}
is_repeat[layer[4]] = false;
}
}
is_repeat[layer[3]] = false;
}
}
is_repeat[layer[2]] = false;
}
}
is_repeat[layer[1]] = false;
}
is_repeat[layer[0]] = false;
}
is_repeat[i] = false;
}
for (auto &ii : mark_isconnet_2)
L2[ii].clear();
mark_isconnet_2.clear();
isconnet_2 = vector<bool>(NodeCounter, false);
isconnet_3 = vector<bool>(NodeCounter, false);
#ifdef TEST
// if (i % 101 == 0)
// {
// printf("thread:%d %d/%d\n", run->thread_id, i, NodeCounter);
// }
#endif
}
pthread_exit(nullptr);
}
void run_threads()
{
pthread_t threads[NUM_THREADS];
pthread_attr_t attr;
void *status;
// 初始化并设置线程为可连接的（joinable）
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
for (unsigned int i = 0; i < NUM_THREADS; ++i)
{
runInfo[i].thread_id = i;
runInfo[i].start = i;
// cout << "main() : creating thread, " << i << endl;
pthread_create(&threads[i], nullptr, solution_threads,
(void *)&(runInfo[i]));
}
// 删除属性，并等待其他线程
pthread_attr_destroy(&attr);
for (unsigned long thread : threads)
{
pthread_join(thread, &status);
}
}
void *save_threads(void *save_Data)
{
auto *save = (savedata *)save_Data;
unsigned int id = save->id;
unsigned int len = save->len;
int fd = open(outputfile, O_RDWR | O_CREAT, 00777);
switch (len)
{
case 0: //长度为3
{
unsigned int offset = threadcharcounter[6];
if (id != 0)
{
for (unsigned int i = 0; i < id; ++i)
{
offset += subcharcnt[i][len];
}
}
char *buffer = (char *)mmap(nullptr, offset + subcharcnt[id][len], PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unsigned int start = id * save_delta, end = (id + 1) * save_delta;
if (id == max_id - 1)
end = NodeCounter;
// cout << start << " " << end << " " << save_delta << " " << NodeCounter << endl;
for (unsigned int k = start; k < end; ++k)
{
for (auto &j : runInfo)
{
for (auto &tmp : j.idxs[k][0])
{
for (unsigned int i = 0; i < 2; ++i)
{
memcpy(buffer + offset, path_str_d[j.ANS[tmp][i]], charcounter[j.ANS[tmp][i]]);
offset = offset + charcounter[j.ANS[tmp][i]];
}
memcpy(buffer + offset, path_str_next[j.ANS[tmp][2]], charcounter[j.ANS[tmp][2]]);
offset = offset + charcounter[j.ANS[tmp][2]];
}
}
}
close(fd);
pthread_exit(nullptr);
}
break;
case 1: //4
{
unsigned int offset = threadcharcounter[6] + threadcharcounter[0];
if (id != 0)
{
for (unsigned int i = 0; i < id; ++i)
{
offset += subcharcnt[i][len];
}
}
char *buffer = (char *)mmap(nullptr, offset + subcharcnt[id][len], PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unsigned int start = id * save_delta, end = (id + 1) * save_delta;
if (id == max_id - 1)
end = NodeCounter;
for (unsigned int k = start; k < end; ++k)
{
for (auto &j : runInfo)
{
for (auto &tmp : j.idxs[k][1])
{
for (unsigned int i = 0; i < 3; ++i)
{
memcpy(buffer + offset, path_str_d[j.ANS[tmp][i]], charcounter[j.ANS[tmp][i]]);
offset = offset + charcounter[j.ANS[tmp][i]];
}
memcpy(buffer + offset, path_str_next[j.ANS[tmp][3]], charcounter[j.ANS[tmp][3]]);
offset = offset + charcounter[j.ANS[tmp][3]];
}
}
}
close(fd);
pthread_exit(nullptr);
}
break;
case 2: //5
{
unsigned int offset = threadcharcounter[6] + threadcharcounter[0] + threadcharcounter[1];
if (id != 0)
{
for (unsigned int i = 0; i < id; ++i)
{
offset += subcharcnt[i][len];
}
}
char *buffer = (char *)mmap(nullptr, offset + subcharcnt[id][len], PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unsigned int start = id * save_delta, end = (id + 1) * save_delta;
if (id == max_id - 1)
end = NodeCounter;
for (unsigned int k = start; k < end; ++k)
{
for (auto &j : runInfo)
{
for (auto &tmp : j.idxs[k][2])
{
for (unsigned int i = 0; i < 4; ++i)
{
memcpy(buffer + offset, path_str_d[j.ANS[tmp][i]], charcounter[j.ANS[tmp][i]]);
offset = offset + charcounter[j.ANS[tmp][i]];
}
memcpy(buffer + offset, path_str_next[j.ANS[tmp][4]], charcounter[j.ANS[tmp][4]]);
offset = offset + charcounter[j.ANS[tmp][4]];
}
}
}
close(fd);
pthread_exit(nullptr);
}
break;
case 3: //6
{
unsigned int offset = threadcharcounter[6] + threadcharcounter[0] + threadcharcounter[1] + threadcharcounter[2];
if (id != 0)
{
for (unsigned int i = 0; i < id; ++i)
{
offset += subcharcnt[i][len];
}
}
char *buffer = (char *)mmap(nullptr, offset + subcharcnt[id][len], PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unsigned int start = id * save_delta, end = (id + 1) * save_delta;
if (id == max_id - 1)
end = NodeCounter;
for (unsigned int k = start; k < end; ++k)
{
for (auto &j : runInfo)
{
for (auto &tmp : j.idxs[k][3])
{
for (unsigned int i = 0; i < 5; ++i)
{
memcpy(buffer + offset, path_str_d[j.ANS[tmp][i]], charcounter[j.ANS[tmp][i]]);
offset = offset + charcounter[j.ANS[tmp][i]];
}
memcpy(buffer + offset, path_str_next[j.ANS[tmp][5]], charcounter[j.ANS[tmp][5]]);
offset = offset + charcounter[j.ANS[tmp][5]];
}
}
}
close(fd);
pthread_exit(nullptr);
}
break;
case 4: //7
{
unsigned int offset = threadcharcounter[6] + threadcharcounter[0] + threadcharcounter[1] + threadcharcounter[2] + threadcharcounter[3];
if (id != 0)
{
for (unsigned int i = 0; i < id; ++i)
{
offset += subcharcnt[i][len];
}
}
char *buffer = (char *)mmap(nullptr, offset + subcharcnt[id][len], PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unsigned int start = id * save_delta, end = (id + 1) * save_delta;
if (id == max_id - 1)
end = NodeCounter;
for (unsigned int k = start; k < end; ++k)
{
for (auto &j : runInfo)
{
for (auto &tmp : j.idxs[k][4])
{
for (unsigned int i = 0; i < 6; ++i)
{
memcpy(buffer + offset, path_str_d[j.ANS[tmp][i]], charcounter[j.ANS[tmp][i]]);
offset = offset + charcounter[j.ANS[tmp][i]];
}
memcpy(buffer + offset, path_str_next[j.ANS[tmp][6]], charcounter[j.ANS[tmp][6]]);
offset = offset + charcounter[j.ANS[tmp][6]];
}
}
}
close(fd);
pthread_exit(nullptr);
}
break;
case 5: //8
{
unsigned int offset = threadcharcounter[6] + threadcharcounter[0] + threadcharcounter[1] + threadcharcounter[2] + threadcharcounter[3]+threadcharcounter[4];
if (id != 0)
{
for (unsigned int i = 0; i < id; ++i)
{
offset += subcharcnt[i][len];
}
}
char *buffer = (char *)mmap(nullptr, offset + subcharcnt[id][len], PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
unsigned int start = id * save_delta, end = (id + 1) * save_delta;
if (id == max_id - 1)
end = NodeCounter;
for (unsigned int k = start; k < end; ++k)
{
for (auto &j : runInfo)
{
for (auto &tmp : j.idxs[k][5])
{
for (unsigned int i = 0; i < 7; ++i)
{
memcpy(buffer + offset, path_str_d[j.ANS[tmp][i]], charcounter[j.ANS[tmp][i]]);
offset = offset + charcounter[j.ANS[tmp][i]];
}
memcpy(buffer + offset, path_str_next[j.ANS[tmp][7]], charcounter[j.ANS[tmp][7]]);
offset = offset + charcounter[j.ANS[tmp][7]];
}
}
}
close(fd);
pthread_exit(nullptr);
}
break;
default:
break;
}
}
void savemmap_threads()
{
// remove(outputfile);
unsigned int pathsize = 0;
unsigned int save_temp = THREAD_NUM_SAVE / 6;
for (auto &i : runInfo)
{
pathsize = pathsize + i.cnt;
for (unsigned int id = 0; id < save_temp; ++id)
{
for (unsigned int k = 0; k < 6; ++k)
{
threadcharcounter[k] += i.charcnt[id][k];
subcharcnt[id][k] += i.charcnt[id][k];
}
}
}
string datatotal = to_string(pathsize) + "\n";
threadcharcounter[6] = datatotal.size();
int datasizetotal = threadcharcounter[6] + threadcharcounter[5] + threadcharcounter[0] + threadcharcounter[1] + threadcharcounter[2] + threadcharcounter[3] + threadcharcounter[4];
int fd = open(outputfile, O_RDWR | O_CREAT, 00777);
lseek(fd, datasizetotal - 1, SEEK_SET);
write(fd, " ", 1);
char *buffer = (char *)mmap(nullptr, threadcharcounter[6], PROT_WRITE, MAP_SHARED, fd, 0);
memcpy(buffer, datatotal.c_str(), threadcharcounter[6]);
close(fd);
pthread_t threads[THREAD_NUM_SAVE];
pthread_attr_t attr;
void *status;
// 初始化并设置线程为可连接的（joinable）
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
unsigned int cnt{0}, len{0};
for (unsigned int i = 0; i < THREAD_NUM_SAVE; ++i)
{
if (len >= 6)
{
++cnt;
len = 0;
}
saveData[i].id = cnt;
saveData[i].len = len++;
pthread_create(&threads[i], nullptr, save_threads, (void *)&(saveData[i]));
}
// 删除属性，并等待其他线程
pthread_attr_destroy(&attr);
for (unsigned long thread : threads)
{
pthread_join(thread, &status);
}
#ifdef RUN_SERVER
exit(0);
#endif
}
#ifdef RUN_SERVER
int main()
{
// sleep(5);
loaddata_mmap();
// usleep(30);
start_mapping();
// usleep(30);
run_threads();
// usleep(30);
// savemmap_threads_avg();
savemmap_threads();
return 0;
}
#endif
#ifdef TEST
int main()
{
#ifdef TEST
auto start = std::chrono::system_clock::now();
auto start_loaddata = std::chrono::system_clock::now();
#endif
// loaddata_mapping(datafile);
loaddata_mmap();
// cout << 2 << endl;
#ifdef TEST
std::chrono::duration<long double, std::milli> duration_loaddata =
std::chrono::system_clock::now() - start_loaddata;
auto start_mappingt = std::chrono::system_clock::now();
#endif
start_mapping();
// cout << 2 << endl;
#ifdef TEST
std::chrono::duration<long double, std::milli> duration_mappingt =
std::chrono::system_clock::now() - start_mappingt;
auto start_p2 = std::chrono::system_clock::now();