projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 27b98e6c MJ |
1 | /* |
| 2 | * SPDX-License-Identifier: LGPL-2.1-only | |
| 3 | * | |
| 4 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 5 | * Copyright (C) 2016 Raphaël Beamonte <raphael.beamonte@gmail.com> | |
| 6 | * Copyright (C) 2020 Michael Jeanson <mjeanson@efficios.com> | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef _UST_COMMON_PROCNAME_H | |
| 10 | #define _UST_COMMON_PROCNAME_H | |
| 11 | ||
| 12 | #include <string.h> | |
| 13 | #include <lttng/ust-abi.h> | |
| 14 | ||
| 15 | #include "common/compat/pthread.h" | |
| 16 | ||
| 17 | #define LTTNG_UST_PROCNAME_SUFFIX "-ust" | |
| 18 | ||
| 19 | /* | |
| 20 | * If a pthread setname/set_name function is available, declare | |
| 21 | * the setustprocname() function that will add '-ust' to the end | |
| 22 | * of the current process name, while truncating it if needed. | |
| 23 | */ | |
| 24 | static inline | |
| 25 | int lttng_ust_setustprocname(void) | |
| 26 | { | |
| 27 | int ret = 0, len; | |
| 28 | char name[LTTNG_UST_ABI_PROCNAME_LEN]; | |
| 29 | int limit = LTTNG_UST_ABI_PROCNAME_LEN - strlen(LTTNG_UST_PROCNAME_SUFFIX) - 1; | |
| 30 | ||
| 31 | /* | |
| 32 | * Get the current thread name. | |
| 33 | */ | |
| 34 | ret = lttng_pthread_getname_np(name, LTTNG_UST_ABI_PROCNAME_LEN); | |
| 35 | if (ret) { | |
| 36 | goto error; | |
| 37 | } | |
| 38 | ||
| 39 | len = strlen(name); | |
| 40 | if (len > limit) { | |
| 41 | len = limit; | |
| 42 | } | |
| 43 | ||
| 44 | ret = sprintf(name + len, LTTNG_UST_PROCNAME_SUFFIX); | |
| 45 | if (ret != strlen(LTTNG_UST_PROCNAME_SUFFIX)) { | |
| 46 | goto error; | |
| 47 | } | |
| 48 | ||
| 49 | ret = lttng_pthread_setname_np(name); | |
| 50 | ||
| 51 | error: | |
| 52 | return ret; | |
| 53 | } | |
| 54 | ||
| 55 | #endif /* _UST_COMMON_PROCNAME_H */ |