git.m6w6.name Git - awesomized/libmemcached/blob - test/lib/ForkAndExec.hpp

   1 /*
   2     +--------------------------------------------------------------------+
   3     | libmemcached - C/C++ Client Library for memcached                  |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted under the terms of the BSD license.    |
   7     | You should have received a copy of the license in a bundled file   |
   8     | named LICENSE; in case you did not receive a copy you can review   |
   9     | the terms online at: https://opensource.org/licenses/BSD-3-Clause  |
  10     +--------------------------------------------------------------------+
  11     | Copyright (c) 2006-2014 Brian Aker   https://datadifferential.com/ |
  12     | Copyright (c) 2020 Michael Wallner   <mike@php.net>                |
  13     +--------------------------------------------------------------------+
  14 */
  15
  16 #pragma once
  17
  18 #include "common.hpp"
  19
  20 class ForkAndExec {
  21 public:
  22   enum mode { READ, WRITE };
  23
  24   ForkAndExec(const char *binary, char **argv);
  25   ~ForkAndExec();
  26
  27   ForkAndExec(const ForkAndExec &) = delete;
  28   ForkAndExec &operator=(const ForkAndExec &) = delete;
  29   ForkAndExec(ForkAndExec &&) = default;
  30   ForkAndExec &operator=(ForkAndExec &&) = default;
  31
  32   [[nodiscard]] int createPipe();
  33   pid_t operator()();
  34
  35 private:
  36   int ready[2], pipes[2];
  37   const char *binary;
  38   char **argv;
  39
  40   bool prepareExecReadyPipe();
  41   void prepareOutputPipe();
  42   void closePipe(int &fd);
  43   void pollExecReadyPipe();
  44 };