LCOV - code coverage report
Current view: top level - opt/gitlab-ci-multi-runner/builds/00e3338d/0/taskrambler/taskrambler/src/server - poll.c (source / functions) Hit Total Coverage
Test: taskrambler 0.1.9 Lines: 10 19 52.6 %
Date: 2016-04-13 23:18:54 Functions: 1 1 100.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /**
       2                 :            :  * \file
       3                 :            :  *
       4                 :            :  * \author      Georg Hopp
       5                 :            :  *
       6                 :            :  * \copyright
       7                 :            :  * Copyright © 2012  Georg Hopp
       8                 :            :  *
       9                 :            :  * This program is free software: you can redistribute it and/or modify
      10                 :            :  * it under the terms of the GNU General Public License as published by
      11                 :            :  * the Free Software Foundation, either version 3 of the License, or
      12                 :            :  * (at your option) any later version.
      13                 :            :  *
      14                 :            :  * This program is distributed in the hope that it will be useful,
      15                 :            :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16                 :            :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17                 :            :  * GNU General Public License for more details.
      18                 :            :  *
      19                 :            :  * You should have received a copy of the GNU General Public License
      20                 :            :  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
      21                 :            :  */
      22                 :            : 
      23                 :            : #include <poll.h>
      24                 :            : #include <errno.h>
      25                 :            : 
      26                 :            : #include "server.h"
      27                 :            : #include "logger.h"
      28                 :            : 
      29                 :            : #include "utils/signalHandling.h"
      30                 :            : 
      31                 :            : #define POLLFD(ptr)     ((struct pollfd *)(ptr))
      32                 :            : 
      33                 :            : int
      34                 :        233 : serverPoll(Server this) {
      35                 :            :         int events;
      36                 :            : 
      37                 :            :         /**
      38                 :            :          * put all closed fds to end of array in O(this->nfds)
      39                 :            :          */
      40                 :        233 :         struct pollfd * fda = &(this->fds[2]);
      41                 :        233 :         struct pollfd * fdb = &(this->fds[this->nfds-1]);
      42                 :            : 
      43                 :        698 :         while (fda <= fdb) {
      44                 :        464 :                 while (0 == fdb->fd && fda <= fdb) {
      45                 :          0 :                         fdb--;
      46                 :          0 :                         this->nfds--;
      47                 :            :                 }
      48                 :            : 
      49                 :        232 :                 while (0 != fda->fd && fda <= fdb) fda++;
      50                 :            : 
      51                 :        232 :                 if (fda < fdb) {
      52                 :          0 :                         memcpy(fda, fdb, sizeof(struct pollfd));
      53                 :          0 :                         fdb--;
      54                 :          0 :                         this->nfds--;
      55                 :            :                 }
      56                 :            :         }
      57                 :            : 
      58                 :            :         /*
      59                 :            :          * wait for handles to become ready
      60                 :            :          */
      61                 :            :         do {
      62                 :        233 :                 if (-1 == (events = poll(this->fds, this->nfds, -1))) {
      63                 :          0 :                         switch (errno) {
      64                 :            :                                 default:
      65                 :            :                                 case EBADF:
      66                 :            :                                 case EINVAL:
      67                 :            :                                 case ENOMEM:
      68                 :          0 :                                         doShutdown = 1;
      69                 :            :                                         // DROP THROUGH
      70                 :            : 
      71                 :            :                                 case EINTR:
      72                 :          0 :                                         loggerLog(this->logger, LOGGER_CRIT,
      73                 :            :                                                         "poll systemcall failed: [%s] - service terminated",
      74                 :          0 :                                                         strerror(errno));
      75                 :            :                         }
      76                 :            :                 }
      77                 :        233 :         } while (! doShutdown && 0 >= events);
      78                 :            : 
      79                 :        233 :         return events;
      80                 :            : }
      81                 :            : 
      82                 :            : // vim: set ts=4 sw=4:

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