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

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <fcntl.h>
   6 #include <signal.h>
   7 #include <pthread.h>
   8
   9 #include "serverpool.h"
  10 #include "stats.h"
  11
  12 using namespace std;
  13
  14 extern ServerPool *servers;
  15
  16 StatsThread::StatsThread(const std::string &stats_file, int stats_interval)
  17         : stats_file(stats_file),
  18           stats_interval(stats_interval)
  19 {
  20 }
  21
  22 void StatsThread::do_work()
  23 {
  24         while (!should_stop) {
  25                 int fd;
  26                 FILE *fp;
  27                 time_t now;
  28                 vector<ClientStats> client_stats;
  29
  30                 // Open a new, temporary file.
  31                 char *filename = strdup((stats_file + ".new.XXXXXX").c_str());
  32                 fd = mkostemp(filename, O_WRONLY);
  33                 if (fd == -1) {
  34                         perror(filename);
  35                         free(filename);
  36                         goto sleep;
  37                 }
  38
  39                 fp = fdopen(fd, "w");
  40                 if (fp == NULL) {
  41                         perror("fdopen");
  42                         close(fd);
  43                         unlink(filename);
  44                         free(filename);
  45                         goto sleep;
  46                 }
  47
  48                 now = time(NULL);
  49                 client_stats = servers->get_client_stats();
  50                 for (size_t i = 0; i < client_stats.size(); ++i) {
  51                         fprintf(fp, "%s %s %d %llu\n",
  52                                 client_stats[i].remote_addr.c_str(),
  53                                 client_stats[i].stream_id.c_str(),
  54                                 int(now - client_stats[i].connect_time),
  55                                 (long long unsigned)(client_stats[i].bytes_sent));
  56                 }
  57                 if (fclose(fp) == EOF) {
  58                         perror("fclose");
  59                         unlink(filename);
  60                         free(filename);
  61                         goto sleep;
  62                 }
  63
  64                 if (rename(filename, stats_file.c_str()) == -1) {
  65                         perror("rename");
  66                         unlink(filename);
  67                 }
  68
  69 sleep:
  70                 int left_to_sleep = stats_interval;
  71                 do {
  72                         left_to_sleep = sleep(left_to_sleep);
  73                 } while (left_to_sleep > 0 && !should_stop);
  74         }
  75 }