git.sesse.net Git - cubemap/blob - stats.cpp

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <fcntl.h>
   5 #include <signal.h>
   6 #include <pthread.h>
   7
   8 #include "serverpool.h"
   9 #include "stats.h"
  10
  11 using namespace std;
  12
  13 extern ServerPool *servers;
  14
  15 StatsThread::StatsThread(const std::string &stats_file, int stats_interval)
  16         : stats_file(stats_file),
  17           stats_interval(stats_interval)
  18 {
  19 }
  20
  21 void StatsThread::do_work()
  22 {
  23         while (!should_stop) {
  24                 int fd;
  25                 FILE *fp;
  26                 time_t now;
  27                 vector<ClientStats> client_stats;
  28
  29                 // Open a new, temporary file.
  30                 char *filename = strdup((stats_file + ".new.XXXXXX").c_str());
  31                 fd = mkostemp(filename, O_WRONLY);
  32                 if (fd == -1) {
  33                         perror(filename);
  34                         free(filename);
  35                         goto sleep;
  36                 }
  37
  38                 fp = fdopen(fd, "w");
  39                 if (fp == NULL) {
  40                         perror("fdopen");
  41                         close(fd);
  42                         unlink(filename);
  43                         free(filename);
  44                         goto sleep;
  45                 }
  46
  47                 now = time(NULL);
  48                 client_stats = servers->get_client_stats();
  49                 for (size_t i = 0; i < client_stats.size(); ++i) {
  50                         fprintf(fp, "%s %s %d %llu\n",
  51                                 client_stats[i].remote_addr.c_str(),
  52                                 client_stats[i].stream_id.c_str(),
  53                                 int(now - client_stats[i].connect_time),
  54                                 (long long unsigned)(client_stats[i].bytes_sent));
  55                 }
  56                 if (fclose(fp) == EOF) {
  57                         perror("fclose");
  58                         unlink(filename);
  59                         free(filename);
  60                         goto sleep;
  61                 }
  62
  63                 if (rename(filename, stats_file.c_str()) == -1) {
  64                         perror("rename");
  65                         unlink(filename);
  66                 }
  67
  68 sleep:
  69                 int left_to_sleep = stats_interval;
  70                 do {
  71                         left_to_sleep = sleep(left_to_sleep);
  72                 } while (left_to_sleep > 0 && !should_stop);
  73         }
  74 }