| 1 | #ifndef _UST_COMPAT_H |
| 2 | #define _UST_COMPAT_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 6 | * Copyright (C) 2016 Raphaƫl Beamonte <raphael.beamonte@gmail.com> |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; only |
| 11 | * version 2.1 of the License. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with this library; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include <pthread.h> |
| 24 | |
| 25 | /* |
| 26 | * Limit imposed by Linux UST-sessiond ABI. |
| 27 | */ |
| 28 | #define LTTNG_UST_PROCNAME_LEN 17 |
| 29 | |
| 30 | #define LTTNG_UST_PROCNAME_SUFFIX "-ust" |
| 31 | |
| 32 | |
| 33 | #if defined(HAVE_PTHREAD_SETNAME_NP_WITH_TID) |
| 34 | static inline |
| 35 | int lttng_pthread_setname_np(const char *name) |
| 36 | { |
| 37 | return pthread_setname_np(pthread_self(), name); |
| 38 | } |
| 39 | |
| 40 | static inline |
| 41 | int lttng_pthread_getname_np(char *name, size_t len) |
| 42 | { |
| 43 | return pthread_getname_np(pthread_self(), name, len); |
| 44 | } |
| 45 | #elif defined(HAVE_PTHREAD_SETNAME_NP_WITHOUT_TID) |
| 46 | static inline |
| 47 | int lttng_pthread_setname_np(const char *name) |
| 48 | { |
| 49 | return pthread_setname_np(name); |
| 50 | } |
| 51 | |
| 52 | static inline |
| 53 | int lttng_pthread_getname_np(char *name, size_t len) |
| 54 | { |
| 55 | return pthread_getname_np(name, len); |
| 56 | } |
| 57 | #else |
| 58 | /* |
| 59 | * For platforms without thread name support, do nothing. |
| 60 | */ |
| 61 | static inline |
| 62 | int lttng_pthread_setname_np(const char *name) |
| 63 | { |
| 64 | return -ENOSYS; |
| 65 | } |
| 66 | |
| 67 | static inline |
| 68 | int lttng_pthread_getname_np(char *name, size_t len) |
| 69 | { |
| 70 | return -ENOSYS; |
| 71 | } |
| 72 | #endif |
| 73 | |
| 74 | static inline |
| 75 | void lttng_ust_getprocname(char *name) |
| 76 | { |
| 77 | lttng_pthread_getname_np(name, LTTNG_UST_PROCNAME_LEN); |
| 78 | } |
| 79 | |
| 80 | static inline |
| 81 | int lttng_ust_setustprocname(void) |
| 82 | { |
| 83 | int ret = 0, len; |
| 84 | char name[LTTNG_UST_PROCNAME_LEN]; |
| 85 | int limit = LTTNG_UST_PROCNAME_LEN - strlen(LTTNG_UST_PROCNAME_SUFFIX) - 1; |
| 86 | |
| 87 | lttng_pthread_getname_np(name, LTTNG_UST_PROCNAME_LEN); |
| 88 | |
| 89 | len = strlen(name); |
| 90 | if (len > limit) { |
| 91 | len = limit; |
| 92 | } |
| 93 | |
| 94 | ret = sprintf(name + len, LTTNG_UST_PROCNAME_SUFFIX); |
| 95 | if (ret != strlen(LTTNG_UST_PROCNAME_SUFFIX)) { |
| 96 | goto error; |
| 97 | } |
| 98 | |
| 99 | ret = lttng_pthread_setname_np(name); |
| 100 | |
| 101 | error: |
| 102 | return ret; |
| 103 | } |
| 104 | |
| 105 | |
| 106 | #include <errno.h> |
| 107 | |
| 108 | #ifndef ENODATA |
| 109 | #define ENODATA ENOMSG |
| 110 | #endif |
| 111 | |
| 112 | #endif /* _UST_COMPAT_H */ |