src/common/sessiond-comm/jul.h

   1 /*
   2  * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License, version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc., 51
  15  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  16  */
  17
  18 #ifndef _JUL_COMM
  19 #define _JUL_COMM
  20
  21 #define _GNU_SOURCE
  22 #include <stdint.h>
  23
  24 #include <lttng/lttng.h>
  25
  26 /*
  27  * Command value pass in the header.
  28  */
  29 enum lttcomm_jul_command {
  30         JUL_CMD_LIST       = 1,
  31         JUL_CMD_ENABLE     = 2,
  32         JUL_CMD_DISABLE    = 3,
  33 };
  34
  35 /*
  36  * Return code from the Java agent.
  37  */
  38 enum lttcomm_jul_ret_code {
  39         JUL_RET_CODE_SUCCESS      = 1,
  40         JUL_RET_CODE_INVALID      = 2,
  41         JUL_RET_CODE_UNKNOWN_NAME = 3,
  42 };
  43
  44 /*
  45  * JUL application communication header.
  46  */
  47 struct lttcomm_jul_hdr {
  48         uint64_t data_size;             /* data size following this header */
  49         uint32_t cmd;                   /* Enum of JUL command. */
  50         uint32_t cmd_version;   /* command version */
  51 } LTTNG_PACKED;
  52
  53 /*
  54  * Enable event command payload.
  55  */
  56 struct lttcomm_jul_enable {
  57         char name[LTTNG_SYMBOL_NAME_LEN];
  58 } LTTNG_PACKED;
  59
  60 /*
  61  * Disable event command payload.
  62  */
  63 struct lttcomm_jul_disable {
  64         char name[LTTNG_SYMBOL_NAME_LEN];
  65 } LTTNG_PACKED;
  66
  67 /*
  68  * Generic reply coming from the Java Agent.
  69  */
  70 struct lttcomm_jul_generic_reply {
  71         uint32_t ret_code;
  72 } LTTNG_PACKED;
  73
  74 /*
  75  * List command reply header.
  76  */
  77 struct lttcomm_jul_list_reply_hdr {
  78         uint32_t ret_code;
  79         uint32_t data_size;
  80 } LTTNG_PACKED;
  81
  82 /*
  83  * List command reply payload coming from the Java Agent.
  84  */
  85 struct lttcomm_jul_list_reply {
  86         uint32_t nb_event;
  87         /* List of event name each of them ending by a NULL byte. */
  88         char payload[];
  89 } LTTNG_PACKED;
  90
  91 #endif  /* _JUL_COMM */