projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| cb8d0d24 MJ |
1 | /* |
| 2 | * Copyright (C) 2020 Michael Jeanson <mjeanson@efficios.com> | |
| 3 | * | |
| 4 | * SPDX-License-Identifier: GPL-2.0-only | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef _COMPAT_PTHREAD_H | |
| 9 | #define _COMPAT_PTHREAD_H | |
| 10 | ||
| 11 | #include <pthread.h> | |
| edf4b93e | 12 | #include <common/compat/errno.h> |
| 014d7d3b MJ |
13 | #include <string.h> |
| 14 | ||
| 15 | #define LTTNG_PTHREAD_NAMELEN 16 | |
| cb8d0d24 MJ |
16 | |
| 17 | #if defined(HAVE_PTHREAD_SETNAME_NP_WITH_TID) | |
| 18 | static inline | |
| 19 | int lttng_pthread_setname_np(const char *name) | |
| 20 | { | |
| 014d7d3b MJ |
21 | /* |
| 22 | * Some implementations don't error out, replicate this behavior for | |
| 23 | * consistency. | |
| 24 | */ | |
| 25 | if (strnlen(name, LTTNG_PTHREAD_NAMELEN) >= LTTNG_PTHREAD_NAMELEN) { | |
| 26 | return ERANGE; | |
| 27 | } | |
| 28 | ||
| cb8d0d24 MJ |
29 | return pthread_setname_np(pthread_self(), name); |
| 30 | } | |
| 014d7d3b MJ |
31 | |
| 32 | static inline | |
| 33 | int lttng_pthread_getname_np(char *name, size_t len) | |
| 34 | { | |
| 35 | return pthread_getname_np(pthread_self(), name, len); | |
| 36 | } | |
| cb8d0d24 MJ |
37 | #elif defined(HAVE_PTHREAD_SETNAME_NP_WITHOUT_TID) |
| 38 | static inline | |
| 39 | int lttng_pthread_setname_np(const char *name) | |
| 40 | { | |
| 41 | return pthread_setname_np(name); | |
| 42 | } | |
| 014d7d3b MJ |
43 | |
| 44 | static inline | |
| 45 | int lttng_pthread_getname_np(char *name, size_t len) | |
| 46 | { | |
| 47 | return pthread_getname_np(name, len); | |
| 48 | } | |
| 49 | #elif defined(HAVE_PTHREAD_SET_NAME_NP_WITH_TID) | |
| 50 | ||
| 51 | #include <pthread_np.h> | |
| 52 | static inline | |
| 53 | int lttng_pthread_setname_np(const char *name) | |
| 54 | { | |
| 55 | /* Replicate pthread_setname_np's behavior. */ | |
| 56 | if (strnlen(name, LTTNG_PTHREAD_NAMELEN) >= LTTNG_PTHREAD_NAMELEN) { | |
| 57 | return ERANGE; | |
| 58 | } | |
| 59 | ||
| 60 | pthread_set_name_np(pthread_self(), name); | |
| 61 | return 0; | |
| 62 | } | |
| 63 | ||
| 64 | static inline | |
| 65 | int lttng_pthread_getname_np(char *name, size_t len) | |
| 66 | { | |
| 67 | pthread_get_name_np(pthread_self(), name, len); | |
| 68 | return 0; | |
| 69 | } | |
| 70 | #elif defined(__linux__) | |
| 71 | ||
| 72 | /* Fallback on prtctl on Linux */ | |
| 73 | #include <sys/prctl.h> | |
| 74 | ||
| 75 | static inline | |
| 76 | int lttng_pthread_setname_np(const char *name) | |
| 77 | { | |
| 78 | /* Replicate pthread_setname_np's behavior. */ | |
| 79 | if (strnlen(name, LTTNG_UST_ABI_PROCNAME_LEN) >= LTTNG_UST_ABI_PROCNAME_LEN) { | |
| 80 | return ERANGE; | |
| 81 | } | |
| 82 | return prctl(PR_SET_NAME, name, 0, 0, 0); | |
| 83 | } | |
| 84 | ||
| 85 | static inline | |
| 86 | int lttng_pthread_getname_np(char *name, size_t len) | |
| 87 | { | |
| 88 | return prctl(PR_GET_NAME, name, 0, 0, 0); | |
| 89 | } | |
| cb8d0d24 MJ |
90 | #else |
| 91 | /* | |
| 92 | * For platforms without thread name support, do nothing. | |
| 93 | */ | |
| 94 | static inline | |
| 95 | int lttng_pthread_setname_np(const char *name) | |
| 96 | { | |
| 97 | return -ENOSYS; | |
| 98 | } | |
| 014d7d3b MJ |
99 | |
| 100 | static inline | |
| 101 | int lttng_pthread_getname_np(char *name, size_t len) | |
| 102 | { | |
| 103 | return -ENOSYS; | |
| 104 | } | |
| cb8d0d24 MJ |
105 | #endif |
| 106 | ||
| 107 | #endif /* _COMPAT_PTHREAD_H */ |