gearman/libhostile/initialize.c

/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 *
 *  Data Differential's libhostle
 *
 *  Copyright (C) 2012 Data Differential, http://datadifferential.com/
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *      * Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 *
 *      * Redistributions in binary form must reproduce the above
 *  copyright notice, this list of conditions and the following disclaimer
 *  in the documentation and/or other materials provided with the
 *  distribution.
 *
 *      * The names of its contributors may not be used to endorse or
 *  promote products derived from this software without specific prior
 *  written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <config.h>

#if defined(TARGET_OS_LINUX) && TARGET_OS_LINUX

#include <libhostile/initialize.h>

#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>

static pthread_once_t start_key_once= PTHREAD_ONCE_INIT;

static void startup(void)
{
  time_t time_seed= time(NULL);

  fprintf(stderr, "--------------------------------------------------------\n\n");
  fprintf(stderr, "\t\tHostile Engaged\n\n");
  fprintf(stderr, "Seed used %lu\n", (unsigned long)time_seed);
  fprintf(stderr, "\n--------------------------------------------------------\n");
  srand((unsigned int)time_seed);
}

struct function_st set_function(const char *name, const char *environ_name)
{
  struct function_st set;

  set.name= name;

  (void)dlerror();
  set.function.ptr= dlsym(RTLD_NEXT, set.name);

  if (set.function.ptr == NULL)
  {
    fprintf(stderr, "libhostile: %s(%s)", set.name, dlerror());
    exit(EXIT_FAILURE);
  }

  if (set.function.ptr == NULL)
  {
    fprintf(stderr, "libhostile: %s(%s)", set.name, dlerror());
    exit(EXIT_FAILURE);
  }

  char *ptr;
  if ((ptr= getenv(environ_name)))
  {
    set.frequency= atoi(ptr);
  }
  else
  {
    set.frequency= 0;
  }

  if (set.frequency)
  {
    fprintf(stderr, "--------------------------------------------------------\n\n");
    fprintf(stderr, "\t\tHostile Engaged -> %s\n\n", set.name);
    fprintf(stderr, "Frequency used %d\n", set.frequency);
    fprintf(stderr, "\n--------------------------------------------------------\n");
  }

  return set;
}

void set_action_frequency(enum action_t action, int frequency)
{
  (void)frequency;
  switch (action)
  {
  case CLOSE_SOCKET_RECV:
    break;

  case CLOSE_SOCKET_SEND:
  default:
    break;
  }
}

void hostile_initialize(void)
{
  (void) pthread_once(&start_key_once, startup);
}

#else // TARGET_OS_LINUX

void hostile_initialize(void);

void hostile_initialize(void)
{
}

#endif // TARGET_OS_LINUX