1GEARMAN_CLIENT_DO(3)               Gearmand               GEARMAN_CLIENT_DO(3)
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NAME

6       gearman_client_do - Gearmand Documentation, http://gearman.info/
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SYNOPSIS

9       #include <libgearman/gearman.h>
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11       void  *gearman_client_do(gearman_client_st *client,  const  char *func‐
12       tion_name,  const  char *unique,  const  void *workload,   size_t work‐
13       load_size, size_t *result_size, gearman_return_t *ret_ptr)
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15       Changed in version 0.21: GEARMAN_PAUSE will no longer be returned. A do
16       operation will now run till completion or error.
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18
19       void      *gearman_client_do_high(gearman_client_st *client,      const
20       char *function_name,    const   char *unique,   const   void *workload,
21       size_t workload_size, size_t *result_size, gearman_return_t *ret_ptr)
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23       void      *gearman_client_do_low(gearman_client_st *client,       const
24       char *function_name,    const   char *unique,   const   void *workload,
25       size_t workload_size, size_t *result_size, gearman_return_t *ret_ptr)
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DESCRIPTION

28       gearman_client_do() executes a single request to  the  gearmand  server
29       and waits for a reply.
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31       gearman_client_do_high()  and  gearman_client_do_low() are identical to
32       gearman_client_do(), only they set the priority to either high or low.
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34       All of the functions will block until either a response or an error  is
35       returned.
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RETURN VALUE

38       gearman_client_do()  returns  a pointer to a value that the caller must
39       release. If ret_ptr is provided any errors that have occurred  will  be
40       stored in it. Since a NULL/zero value is a valid value, you will always
41       need to check ret_ptr if you are concerned with errors.
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EXAMPLE

44          /*
45          # Gearman server and library
46          # Copyright (C) 2012 Data Differential, http://datadifferential.com/
47          # All rights reserved.
48          #
49          # Use and distribution licensed under the BSD license.  See
50          # the COPYING file in this directory for full text.
51          */
52
53          #include <string.h>
54          #include <stdlib.h>
55          #include <libgearman/gearman.h>
56
57          int main(void)
58          {
59            gearman_client_st *client= gearman_client_create(NULL);
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61            gearman_return_t ret= gearman_client_add_server(client, "localhost", 0);
62            if (gearman_failed(ret))
63            {
64              return EXIT_FAILURE;
65            }
66
67            size_t result_size;
68            gearman_return_t rc;
69            void *value= gearman_client_do(client, "reverse_function", "unique_value",
70                                           "my string to reverse", strlen("my string to reverse"),
71                                           &result_size, &rc);
72
73            if (gearman_success(rc))
74            {
75              // Make use of value
76            }
77            free(value);
78
79            gearman_client_free(client);
80
81            return 0;
82          }
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84

HOME

86       To find out more information please check: http://gearman.info/
87
88       SEE ALSO:
89          gearmand(8) libgearman(3) gearman_strerror(3)
90

AUTHOR

92       Data Differential http://www.datadifferential.com/
93

95       2011-2014, Data Differential, http://www.datadifferential.com/
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1001.1.18                         December 11, 2017          GEARMAN_CLIENT_DO(3)
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