| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright (C) 2005-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * This contains the core definitions for the Linux Trace Toolkit. |
| 7 | */ |
| 8 | |
| 9 | #ifndef _LTTNG_UST_TRACER_H |
| 10 | #define _LTTNG_UST_TRACER_H |
| 11 | |
| 12 | #include <lttng/ust-arch.h> |
| 13 | #include <lttng/ust-compiler.h> |
| 14 | #include <lttng/ust-utils.h> |
| 15 | #include <lttng/ust-version.h> |
| 16 | |
| 17 | /* |
| 18 | * On architectures without efficient unaligned accesses, the layout of |
| 19 | * the ringbuffer's content respects the natural alignment of the |
| 20 | * system. Only pack its content on architectures we know have efficient |
| 21 | * unaligned memory access. |
| 22 | * |
| 23 | * Whether to pack the ring buffer contents or not is part of the ABI |
| 24 | * between the probe providers and the tracer, and is selected by the |
| 25 | * lttng/ust-arch.h header. |
| 26 | */ |
| 27 | #ifndef LTTNG_UST_ARCH_HAS_EFFICIENT_UNALIGNED_ACCESS |
| 28 | #define LTTNG_UST_RING_BUFFER_NATURAL_ALIGN |
| 29 | #endif |
| 30 | |
| 31 | #ifdef LTTNG_UST_RING_BUFFER_NATURAL_ALIGN |
| 32 | #define lttng_ust_rb_alignof(type) __alignof__(type) |
| 33 | #else |
| 34 | #define lttng_ust_rb_alignof(type) 1 |
| 35 | #endif |
| 36 | |
| 37 | /* |
| 38 | * Concatenate lttng ust shared libraries name with their major version number. |
| 39 | */ |
| 40 | #define LTTNG_UST_LIB_SONAME "liblttng-ust.so." lttng_ust_stringify(LTTNG_UST_LIB_SONAME_MAJOR) |
| 41 | #define LTTNG_UST_TRACEPOINT_LIB_SONAME "liblttng-ust-tracepoint.so." lttng_ust_stringify(LTTNG_UST_LIB_SONAME_MAJOR) |
| 42 | #define LTTNG_UST_CTL_LIB_SONAME "liblttng-ust-ctl.so." lttng_ust_stringify(LTTNG_UST_CTL_LIB_SONAME_MAJOR) |
| 43 | |
| 44 | |
| 45 | #endif /* _LTTNG_UST_TRACER_H */ |