| 1 | #ifndef _UST_COMPAT_H |
| 2 | #define _UST_COMPAT_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 6 | * |
| 7 | * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED |
| 8 | * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. |
| 9 | * |
| 10 | * Permission is hereby granted to use or copy this program |
| 11 | * for any purpose, provided the above notices are retained on all copies. |
| 12 | * Permission to modify the code and to distribute modified code is granted, |
| 13 | * provided the above notices are retained, and a notice that the code was |
| 14 | * modified is included with the above copyright notice. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | * sched_getcpu. |
| 19 | */ |
| 20 | #ifdef __linux__ |
| 21 | |
| 22 | #ifdef __UCLIBC__ |
| 23 | #include <sys/syscall.h> |
| 24 | #define __getcpu(cpu, node, cache) syscall(__NR_getcpu, cpu, node, cache) |
| 25 | static inline |
| 26 | int sched_getcpu(void) |
| 27 | { |
| 28 | int c, s; |
| 29 | |
| 30 | s = __getcpu(&c, NULL, NULL); |
| 31 | return (s == -1) ? s : c; |
| 32 | } |
| 33 | #endif /* __UCLIBC__ */ |
| 34 | |
| 35 | #else |
| 36 | #error "Please add support for your OS into liblttng-ust/compat.h." |
| 37 | #endif |
| 38 | |
| 39 | /* |
| 40 | * lttng_ust_getprocname. |
| 41 | */ |
| 42 | #ifdef __linux__ |
| 43 | |
| 44 | #include <sys/prctl.h> |
| 45 | |
| 46 | #define LTTNG_UST_PROCNAME_LEN 17 |
| 47 | |
| 48 | static inline |
| 49 | void lttng_ust_getprocname(char *name) |
| 50 | { |
| 51 | (void) prctl(PR_GET_NAME, (unsigned long) name, 0, 0, 0); |
| 52 | } |
| 53 | |
| 54 | #elif defined(__FreeBSD__) |
| 55 | #include <stdlib.h> |
| 56 | #include <string.h> |
| 57 | |
| 58 | /* |
| 59 | * Limit imposed by Linux UST-sessiond ABI. |
| 60 | */ |
| 61 | #define LTTNG_UST_PROCNAME_LEN 17 |
| 62 | |
| 63 | /* |
| 64 | * Acts like linux prctl, the string is not necessarily 0-terminated if |
| 65 | * 16-byte long. |
| 66 | */ |
| 67 | static inline |
| 68 | void lttng_ust_getprocname(char *name) |
| 69 | { |
| 70 | const char *bsd_name; |
| 71 | |
| 72 | bsd_name = getprogname(); |
| 73 | if (!bsd_name) |
| 74 | name[0] = '\0'; |
| 75 | memcpy(name, bsd_name, LTTNG_UST_PROCNAME_LEN - 1); |
| 76 | } |
| 77 | |
| 78 | #endif |
| 79 | |
| 80 | #endif /* _UST_COMPAT_H */ |