| 1 | /* |
| 2 | * Copyright (C) 2014 - David Goulet <dgoulet@efficios.com> |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This library 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 Lesser General Public License |
| 11 | * for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU Lesser General Public License |
| 14 | * along with this library; if not, write to the Free Software Foundation, |
| 15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 16 | */ |
| 17 | |
| 18 | #ifndef LTTNG_DOMAIN_H |
| 19 | #define LTTNG_DOMAIN_H |
| 20 | |
| 21 | #ifdef __cplusplus |
| 22 | extern "C" { |
| 23 | #endif |
| 24 | |
| 25 | #include <lttng/constant.h> |
| 26 | |
| 27 | /* |
| 28 | * Domain types: the different possible tracers. |
| 29 | */ |
| 30 | enum lttng_domain_type { |
| 31 | LTTNG_DOMAIN_KERNEL = 1, /* Linux Kernel tracer. */ |
| 32 | LTTNG_DOMAIN_UST = 2, /* Global Userspace tracer. */ |
| 33 | LTTNG_DOMAIN_JUL = 3, /* Java Util Logging. */ |
| 34 | LTTNG_DOMAIN_LOG4J = 4, /* Java Log4j Framework. */ |
| 35 | LTTNG_DOMAIN_PYTHON = 5, /* Python logging Framework. */ |
| 36 | }; |
| 37 | |
| 38 | /* Buffer type for a specific domain. */ |
| 39 | enum lttng_buffer_type { |
| 40 | LTTNG_BUFFER_PER_PID, /* Only supported by UST being the default. */ |
| 41 | LTTNG_BUFFER_PER_UID, /* Only supported by UST. */ |
| 42 | LTTNG_BUFFER_GLOBAL, /* Only supported by the Kernel. */ |
| 43 | }; |
| 44 | |
| 45 | /* |
| 46 | * The structures should be initialized to zero before use. |
| 47 | */ |
| 48 | #define LTTNG_DOMAIN_PADDING1 12 |
| 49 | #define LTTNG_DOMAIN_PADDING2 LTTNG_SYMBOL_NAME_LEN + 32 |
| 50 | struct lttng_domain { |
| 51 | enum lttng_domain_type type; |
| 52 | enum lttng_buffer_type buf_type; |
| 53 | char padding[LTTNG_DOMAIN_PADDING1]; |
| 54 | |
| 55 | union { |
| 56 | pid_t pid; |
| 57 | char exec_name[LTTNG_NAME_MAX]; |
| 58 | char padding[LTTNG_DOMAIN_PADDING2]; |
| 59 | } attr; |
| 60 | }; |
| 61 | |
| 62 | /* |
| 63 | * List the registered domain(s) of a session. |
| 64 | * |
| 65 | * Session name CAN NOT be NULL. |
| 66 | * |
| 67 | * Return the size (number of entries) of the "lttng_domain" array. Caller |
| 68 | * must free domains. On error, a negative LTTng error code is returned. |
| 69 | */ |
| 70 | extern int lttng_list_domains(const char *session_name, |
| 71 | struct lttng_domain **domains); |
| 72 | |
| 73 | #ifdef __cplusplus |
| 74 | } |
| 75 | #endif |
| 76 | |
| 77 | #endif /* LTTNG_DOMAIN_H */ |