| 1 | /* |
| 2 | * SPDX-License-Identifier: LGPL-2.1-only |
| 3 | * |
| 4 | * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 5 | * |
| 6 | * This contains the core definitions for the Linux Trace Toolkit. |
| 7 | */ |
| 8 | |
| 9 | #ifndef _LTTNG_TRACER_CORE_H |
| 10 | #define _LTTNG_TRACER_CORE_H |
| 11 | |
| 12 | #include <stddef.h> |
| 13 | #include <urcu/arch.h> |
| 14 | #include <urcu/list.h> |
| 15 | #include <lttng/ust-tracer.h> |
| 16 | #include <lttng/ringbuffer-context.h> |
| 17 | #include <usterr-signal-safe.h> |
| 18 | |
| 19 | /* |
| 20 | * The longuest possible namespace proc path is with the cgroup ns |
| 21 | * and the maximum theoretical linux pid of 536870912 : |
| 22 | * |
| 23 | * /proc/self/task/536870912/ns/cgroup |
| 24 | */ |
| 25 | #define LTTNG_PROC_NS_PATH_MAX 40 |
| 26 | |
| 27 | struct lttng_ust_session; |
| 28 | struct lttng_ust_channel_buffer; |
| 29 | struct lttng_ust_ctx_field; |
| 30 | struct lttng_ust_lib_ring_buffer_ctx; |
| 31 | struct lttng_ust_ctx_value; |
| 32 | struct lttng_ust_event_recorder; |
| 33 | struct lttng_ust_event_notifier; |
| 34 | struct lttng_ust_notification_ctx; |
| 35 | |
| 36 | __attribute__((visibility("hidden"))) |
| 37 | int ust_lock(void) __attribute__ ((warn_unused_result)); |
| 38 | |
| 39 | __attribute__((visibility("hidden"))) |
| 40 | void ust_lock_nocheck(void); |
| 41 | |
| 42 | __attribute__((visibility("hidden"))) |
| 43 | void ust_unlock(void); |
| 44 | |
| 45 | __attribute__((visibility("hidden"))) |
| 46 | void lttng_ust_fixup_tls(void); |
| 47 | |
| 48 | __attribute__((visibility("hidden"))) |
| 49 | void lttng_fixup_event_tls(void); |
| 50 | |
| 51 | __attribute__((visibility("hidden"))) |
| 52 | void lttng_fixup_vtid_tls(void); |
| 53 | |
| 54 | __attribute__((visibility("hidden"))) |
| 55 | void lttng_fixup_procname_tls(void); |
| 56 | |
| 57 | __attribute__((visibility("hidden"))) |
| 58 | void lttng_fixup_cgroup_ns_tls(void); |
| 59 | |
| 60 | __attribute__((visibility("hidden"))) |
| 61 | void lttng_fixup_ipc_ns_tls(void); |
| 62 | |
| 63 | __attribute__((visibility("hidden"))) |
| 64 | void lttng_fixup_net_ns_tls(void); |
| 65 | |
| 66 | __attribute__((visibility("hidden"))) |
| 67 | void lttng_fixup_time_ns_tls(void); |
| 68 | |
| 69 | __attribute__((visibility("hidden"))) |
| 70 | void lttng_fixup_uts_ns_tls(void); |
| 71 | |
| 72 | __attribute__((visibility("hidden"))) |
| 73 | void lttng_ust_fixup_fd_tracker_tls(void); |
| 74 | |
| 75 | __attribute__((visibility("hidden"))) |
| 76 | const char *lttng_ust_obj_get_name(int id); |
| 77 | |
| 78 | __attribute__((visibility("hidden"))) |
| 79 | int lttng_get_notify_socket(void *owner); |
| 80 | |
| 81 | __attribute__((visibility("hidden"))) |
| 82 | char* lttng_ust_sockinfo_get_procname(void *owner); |
| 83 | |
| 84 | __attribute__((visibility("hidden"))) |
| 85 | void lttng_ust_sockinfo_session_enabled(void *owner); |
| 86 | |
| 87 | __attribute__((visibility("hidden"))) |
| 88 | ssize_t lttng_ust_read(int fd, void *buf, size_t len); |
| 89 | |
| 90 | __attribute__((visibility("hidden"))) |
| 91 | size_t lttng_ust_dummy_get_size(struct lttng_ust_ctx_field *field, size_t offset); |
| 92 | |
| 93 | __attribute__((visibility("hidden"))) |
| 94 | void lttng_ust_dummy_record(struct lttng_ust_ctx_field *field, |
| 95 | struct lttng_ust_lib_ring_buffer_ctx *ctx, |
| 96 | struct lttng_ust_channel_buffer *chan); |
| 97 | __attribute__((visibility("hidden"))) |
| 98 | void lttng_ust_dummy_get_value(struct lttng_ust_ctx_field *field, |
| 99 | struct lttng_ust_ctx_value *value); |
| 100 | |
| 101 | __attribute__((visibility("hidden"))) |
| 102 | void lttng_event_notifier_notification_send( |
| 103 | struct lttng_ust_event_notifier *event_notifier, |
| 104 | const char *stack_data, |
| 105 | struct lttng_ust_notification_ctx *notif_ctx); |
| 106 | |
| 107 | __attribute__((visibility("hidden"))) |
| 108 | struct lttng_counter_transport *lttng_counter_transport_find(const char *name); |
| 109 | |
| 110 | __attribute__((visibility("hidden"))) |
| 111 | void lttng_counter_transport_register(struct lttng_counter_transport *transport); |
| 112 | |
| 113 | __attribute__((visibility("hidden"))) |
| 114 | void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); |
| 115 | |
| 116 | #ifdef HAVE_PERF_EVENT |
| 117 | __attribute__((visibility("hidden"))) |
| 118 | void lttng_ust_fixup_perf_counter_tls(void); |
| 119 | |
| 120 | __attribute__((visibility("hidden"))) |
| 121 | void lttng_perf_lock(void); |
| 122 | |
| 123 | __attribute__((visibility("hidden"))) |
| 124 | void lttng_perf_unlock(void); |
| 125 | #else /* #ifdef HAVE_PERF_EVENT */ |
| 126 | static inline |
| 127 | void lttng_ust_fixup_perf_counter_tls(void) |
| 128 | { |
| 129 | } |
| 130 | static inline |
| 131 | void lttng_perf_lock(void) |
| 132 | { |
| 133 | } |
| 134 | static inline |
| 135 | void lttng_perf_unlock(void) |
| 136 | { |
| 137 | } |
| 138 | #endif /* #else #ifdef HAVE_PERF_EVENT */ |
| 139 | |
| 140 | #endif /* _LTTNG_TRACER_CORE_H */ |