X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=libringbuffer%2Ffrontend_api.h;h=6a06bba2c2393ba139bc506a8f88bb4027b59ea9;hb=1abcee5dc89230e8f9dca4b961e978fe6ac44954;hp=d5a2f2a043cb892a0ef020bfd7ef9b137978debb;hpb=aae88c703374f4b1fbb8a5e7e95591bf8ce3e837;p=lttng-ust.git diff --git a/libringbuffer/frontend_api.h b/libringbuffer/frontend_api.h index d5a2f2a0..6a06bba2 100644 --- a/libringbuffer/frontend_api.h +++ b/libringbuffer/frontend_api.h @@ -1,20 +1,33 @@ -#ifndef _LINUX_RING_BUFFER_FRONTEND_API_H -#define _LINUX_RING_BUFFER_FRONTEND_API_H +#ifndef _LTTNG_RING_BUFFER_FRONTEND_API_H +#define _LTTNG_RING_BUFFER_FRONTEND_API_H /* - * linux/ringbuffer/frontend_api.h + * libringbuffer/frontend_api.h * - * (C) Copyright 2005-2010 - Mathieu Desnoyers + * 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 * * Ring Buffer Library Synchronization Header (buffer write API). * * Author: - * Mathieu Desnoyers + * Mathieu Desnoyers * - * See ring_buffer_frontend.c for more information on wait-free algorithms. - * See linux/ringbuffer/frontend.h for channel allocation and read-side API. - * - * Dual LGPL v2.1/GPL v2 license. + * See ring_buffer_frontend.c for more information on wait-free + * algorithms. + * See frontend.h for channel allocation and read-side API. */ #include "frontend.h" @@ -93,18 +106,8 @@ int lib_ring_buffer_try_reserve(const struct lttng_ust_lib_ring_buffer_config *c */ //prefetch(&buf->commit_hot[subbuf_index(*o_begin, chan)]); - /* - * Because we don't use any timer in the application, we - * currently cannot guarantee that we have frequent - * events that let us detect 27-bit overflows. - * Therefore, for now, we force event headers - * to contain 64-bit timestamps. - */ - ctx->rflags |= RING_BUFFER_RFLAG_FULL_TSC; -#if 0 if (last_tsc_overflow(config, buf, ctx->tsc)) ctx->rflags |= RING_BUFFER_RFLAG_FULL_TSC; -#endif //0 if (caa_unlikely(subbuf_offset(*o_begin, chan) == 0)) return 1; @@ -361,4 +364,4 @@ void lib_ring_buffer_record_enable(const struct lttng_ust_lib_ring_buffer_config uatomic_dec(&buf->record_disabled); } -#endif /* _LINUX_RING_BUFFER_FRONTEND_API_H */ +#endif /* _LTTNG_RING_BUFFER_FRONTEND_API_H */