X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=libringbuffer%2Ffrontend_internal.h;h=c8a54e96a83cd52ed1f29877c1b98cd1871ced4e;hb=071dec4386ff4c89d8b0f92ab1a8dbf079abd50c;hp=f6d91bde2bf63f0917b9bd27b90e73ed54429bcc;hpb=fb31eb73d8a4a6d9784ed5c335b7fa3b9684108c;p=lttng-ust.git diff --git a/libringbuffer/frontend_internal.h b/libringbuffer/frontend_internal.h index f6d91bde..c8a54e96 100644 --- a/libringbuffer/frontend_internal.h +++ b/libringbuffer/frontend_internal.h @@ -1,36 +1,16 @@ -#ifndef _LTTNG_RING_BUFFER_FRONTEND_INTERNAL_H -#define _LTTNG_RING_BUFFER_FRONTEND_INTERNAL_H - /* - * libringbuffer/frontend_internal.h - * - * Ring Buffer Library Synchronization Header (internal helpers). + * SPDX-License-Identifier: (LGPL-2.1-only or GPL-2.0-only) * * Copyright (C) 2005-2012 Mathieu Desnoyers * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; only - * version 2.1 of the License. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * - * Author: - * Mathieu Desnoyers + * Ring Buffer Library Synchronization Header (internal helpers). * * See ring_buffer_frontend.c for more information on wait-free algorithms. - * - * Dual LGPL v2.1/GPL v2 license. */ +#ifndef _LTTNG_RING_BUFFER_FRONTEND_INTERNAL_H +#define _LTTNG_RING_BUFFER_FRONTEND_INTERNAL_H + #include #include #include @@ -41,6 +21,7 @@ #include "backend_types.h" #include "frontend_types.h" #include "shm.h" +#include "ust-helper.h" /* Buffer offset macros */ @@ -158,15 +139,18 @@ int last_tsc_overflow(const struct lttng_ust_lib_ring_buffer_config *config, } #endif +LTTNG_HIDDEN extern int lib_ring_buffer_reserve_slow(struct lttng_ust_lib_ring_buffer_ctx *ctx, void *client_ctx); +LTTNG_HIDDEN extern void lib_ring_buffer_switch_slow(struct lttng_ust_lib_ring_buffer *buf, enum switch_mode mode, struct lttng_ust_shm_handle *handle); +LTTNG_HIDDEN void lib_ring_buffer_check_deliver_slow(const struct lttng_ust_lib_ring_buffer_config *config, struct lttng_ust_lib_ring_buffer *buf, struct channel *chan, @@ -357,14 +341,17 @@ void lib_ring_buffer_write_commit_counter(const struct lttng_ust_lib_ring_buffer v_set(config, &cc_hot->seq, commit_count); } +LTTNG_HIDDEN extern int lib_ring_buffer_create(struct lttng_ust_lib_ring_buffer *buf, struct channel_backend *chanb, int cpu, struct lttng_ust_shm_handle *handle, struct shm_object *shmobj); +LTTNG_HIDDEN extern void lib_ring_buffer_free(struct lttng_ust_lib_ring_buffer *buf, struct lttng_ust_shm_handle *handle); /* Keep track of trap nesting inside ring buffer code */ +LTTNG_HIDDEN extern DECLARE_URCU_TLS(unsigned int, lib_ring_buffer_nesting); #endif /* _LTTNG_RING_BUFFER_FRONTEND_INTERNAL_H */