projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| 1239a312 DG |
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 | }; | |
| 35 | ||
| 36 | /* Buffer type for a specific domain. */ | |
| 37 | enum lttng_buffer_type { | |
| 38 | LTTNG_BUFFER_PER_PID, /* Only supported by UST being the default. */ | |
| 39 | LTTNG_BUFFER_PER_UID, /* Only supported by UST. */ | |
| 40 | LTTNG_BUFFER_GLOBAL, /* Only supported by the Kernel. */ | |
| 41 | }; | |
| 42 | ||
| 43 | /* | |
| 44 | * The structures should be initialized to zero before use. | |
| 45 | */ | |
| 46 | #define LTTNG_DOMAIN_PADDING1 12 | |
| 47 | #define LTTNG_DOMAIN_PADDING2 LTTNG_SYMBOL_NAME_LEN + 32 | |
| 48 | struct lttng_domain { | |
| 49 | enum lttng_domain_type type; | |
| 50 | enum lttng_buffer_type buf_type; | |
| 51 | char padding[LTTNG_DOMAIN_PADDING1]; | |
| 52 | ||
| 53 | union { | |
| 54 | pid_t pid; | |
| 55 | char exec_name[NAME_MAX]; | |
| 56 | char padding[LTTNG_DOMAIN_PADDING2]; | |
| 57 | } attr; | |
| 58 | }; | |
| 59 | ||
| 60 | /* | |
| 61 | * List the registered domain(s) of a session. | |
| 62 | * | |
| 63 | * Session name CAN NOT be NULL. | |
| 64 | * | |
| 65 | * Return the size (number of entries) of the "lttng_domain" array. Caller | |
| 66 | * must free domains. On error, a negative LTTng error code is returned. | |
| 67 | */ | |
| 68 | extern int lttng_list_domains(const char *session_name, | |
| 69 | struct lttng_domain **domains); | |
| 70 | ||
| 71 | #ifdef __cplusplus | |
| 72 | } | |
| 73 | #endif | |
| 74 | ||
| 75 | #endif /* LTTNG_DOMAIN_H */ |