gearman/tests/workers/v2/increment_reset.cc

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 *  Gearmand client and server library.
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#include <gear_config.h>
#include <libtest/test.hpp>

#include <libgearman-1.0/gearman.h>

#include "tests/workers/v2/increment_reset.h"

#include <climits>

static pthread_mutex_t increment_reset_worker_mutex= PTHREAD_MUTEX_INITIALIZER;

gearman_return_t increment_reset_worker_v2(gearman_job_st *job, void *)
{
  static long counter= 0;
  long change= 0;
  const char *workload= (const char*)gearman_job_workload(job);

  if (gearman_job_workload_size(job) == test_literal_param_size("reset") and (not memcmp(workload, test_literal_param("reset"))))
  {
    pthread_mutex_lock(&increment_reset_worker_mutex);
    counter= 0;
    pthread_mutex_unlock(&increment_reset_worker_mutex);

    return GEARMAN_SUCCESS;
  }
  else if (workload and gearman_job_workload_size(job))
  {
    if (gearman_job_workload_size(job) > GEARMAN_MAXIMUM_INTEGER_DISPLAY_LENGTH)
    {
      return GEARMAN_FAIL;
    }

    char temp[GEARMAN_MAXIMUM_INTEGER_DISPLAY_LENGTH +1];
    memcpy(temp, workload, gearman_job_workload_size(job));
    temp[gearman_job_workload_size(job)]= 0;
    change= strtol(temp, (char **)NULL, 10);
    if (change ==  LONG_MIN or change == LONG_MAX or ( change == 0 and errno < 0))
    {
      gearman_job_send_exception(job, test_literal_param("strtol() failed"));
      return GEARMAN_FAIL;
    }
  }

  {
    pthread_mutex_lock(&increment_reset_worker_mutex);
    counter= counter +change;

    char result[GEARMAN_MAXIMUM_INTEGER_DISPLAY_LENGTH +1];
    size_t result_size= size_t(snprintf(result, sizeof(result), "%ld", counter));
    if (gearman_failed(gearman_job_send_data(job, result, result_size)))
    {
      pthread_mutex_unlock(&increment_reset_worker_mutex);
      return GEARMAN_FAIL;
    }

    pthread_mutex_unlock(&increment_reset_worker_mutex);
  }

  return GEARMAN_SUCCESS;
}