| 1 | |
| 2 | /* LTTng user-space tracing header |
| 3 | * |
| 4 | * Copyright 2006 Mathieu Desnoyers |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | #ifndef _LTTNG_USERTRACE_H |
| 9 | #define _LTTNG_USERTRACE_H |
| 10 | |
| 11 | #include <errno.h> |
| 12 | #include <asm/atomic.h> |
| 13 | |
| 14 | #ifndef LTT_BUF_SIZE_CPU |
| 15 | #define LTT_BUF_SIZE_CPU 1048576 |
| 16 | #endif //LTT_BUF_SIZE_CPU |
| 17 | |
| 18 | #ifndef LTT_BUF_SIZE_FACILITIES |
| 19 | #define LTT_BUF_SIZE_FACILITIES 4096 |
| 20 | #endif //LTT_BUF_SIZE_FACILITIES |
| 21 | |
| 22 | struct ltt_buf { |
| 23 | atomic_t offset; |
| 24 | atomic_t reserve_count; |
| 25 | atomic_t commit_count; |
| 26 | |
| 27 | atomic_t events_lost; |
| 28 | }; |
| 29 | |
| 30 | struct lttng_trace_info { |
| 31 | struct _pthread_cleanup_buffer cleanup; |
| 32 | int filter; |
| 33 | atomic_t nesting; |
| 34 | struct { |
| 35 | struct ltt_buf facilities; |
| 36 | char facilities_buf[LTT_BUF_SIZE_FACILITIES] __attribute__ ((aligned (8))); |
| 37 | struct ltt_buf cpu; |
| 38 | char cpu_buf[LTT_BUF_SIZE_CPU] __attribute__ ((aligned (8))); |
| 39 | } channel; |
| 40 | }; |
| 41 | |
| 42 | extern __thread struct lttng_trace_info lttng_trace_info; |
| 43 | |
| 44 | void ltt_thread_init(void); |
| 45 | |
| 46 | #endif //_LTTNG_USERTRACE_H |