Refactoring: namespace ust-abi.h content under regular prefix
[lttng-ust.git] / liblttng-ust / lttng-ring-buffer-client.h
index 0fae88787c8b263a93f29b865153f22aff7ca3cf..cac61343acc8723f714d0e794bbe6439bcf5716c 100644 (file)
@@ -1,29 +1,19 @@
 /*
- * lttng-ring-buffer-client.h
- *
- * LTTng lib ring buffer client template.
+ * SPDX-License-Identifier: LGPL-2.1-only
  *
  * Copyright (C) 2010-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * 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
+ * LTTng lib ring buffer client template.
  */
 
+#include <stddef.h>
 #include <stdint.h>
-#include <lttng/ust-events.h>
-#include "lttng/bitfield.h"
+
+#include <ust-events-internal.h>
+#include "ust-bitfield.h"
+#include "ust-compat.h"
 #include "clock.h"
+#include "context-internal.h"
 #include "lttng-tracer.h"
 #include "../libringbuffer/frontend_types.h"
 
@@ -182,7 +172,7 @@ size_t record_header_size(const struct lttng_ust_lib_ring_buffer_config *config,
                                 struct lttng_client_ctx *client_ctx)
 {
        struct lttng_channel *lttng_chan = channel_get_private(chan);
-       struct lttng_event *event = ctx->priv;
+       struct lttng_ust_event_recorder *event_recorder = ctx->priv;
        struct lttng_stack_ctx *lttng_ctx = ctx->priv2;
        size_t orig_offset = offset;
        size_t padding;
@@ -232,7 +222,7 @@ size_t record_header_size(const struct lttng_ust_lib_ring_buffer_config *config,
                /* Pre 2.8 probe ABI. */
                offset += ctx_get_aligned_size(offset, lttng_chan->ctx,
                                client_ctx->packet_context_len);
-               offset += ctx_get_aligned_size(offset, event->ctx,
+               offset += ctx_get_aligned_size(offset, event_recorder->ctx,
                                client_ctx->event_context_len);
        }
        *pre_header_padding = padding;
@@ -262,7 +252,7 @@ void lttng_write_event_header(const struct lttng_ust_lib_ring_buffer_config *con
                            uint32_t event_id)
 {
        struct lttng_channel *lttng_chan = channel_get_private(ctx->chan);
-       struct lttng_event *event = ctx->priv;
+       struct lttng_ust_event_recorder *event_recorder = ctx->priv;
        struct lttng_stack_ctx *lttng_ctx = ctx->priv2;
 
        if (caa_unlikely(ctx->rflags))
@@ -305,7 +295,7 @@ void lttng_write_event_header(const struct lttng_ust_lib_ring_buffer_config *con
        } else {
                /* Pre 2.8 probe ABI. */
                ctx_record(ctx, lttng_chan, lttng_chan->ctx, APP_CTX_DISABLED);
-               ctx_record(ctx, lttng_chan, event->ctx, APP_CTX_DISABLED);
+               ctx_record(ctx, lttng_chan, event_recorder->ctx, APP_CTX_DISABLED);
        }
        lib_ring_buffer_align_ctx(ctx, ctx->largest_align);
 
@@ -321,7 +311,7 @@ void lttng_write_event_header_slow(const struct lttng_ust_lib_ring_buffer_config
                                 uint32_t event_id)
 {
        struct lttng_channel *lttng_chan = channel_get_private(ctx->chan);
-       struct lttng_event *event = ctx->priv;
+       struct lttng_ust_event_recorder *event_recorder = ctx->priv;
        struct lttng_stack_ctx *lttng_ctx = ctx->priv2;
 
        switch (lttng_chan->header_type) {
@@ -386,7 +376,7 @@ void lttng_write_event_header_slow(const struct lttng_ust_lib_ring_buffer_config
        } else {
                /* Pre 2.8 probe ABI. */
                ctx_record(ctx, lttng_chan, lttng_chan->ctx, APP_CTX_DISABLED);
-               ctx_record(ctx, lttng_chan, event->ctx, APP_CTX_DISABLED);
+               ctx_record(ctx, lttng_chan, event_recorder->ctx, APP_CTX_DISABLED);
        }
        lib_ring_buffer_align_ctx(ctx, ctx->largest_align);
 }
@@ -473,7 +463,7 @@ static void client_buffer_end(struct lttng_ust_lib_ring_buffer *buf, uint64_t ts
        header->ctx.content_size =
                (uint64_t) data_size * CHAR_BIT;                /* in bits */
        header->ctx.packet_size =
-               (uint64_t) PAGE_ALIGN(data_size) * CHAR_BIT;    /* in bits */
+               (uint64_t) LTTNG_UST_PAGE_ALIGN(data_size) * CHAR_BIT;  /* in bits */
 
        records_lost += lib_ring_buffer_get_records_lost_full(&client_config, buf);
        records_lost += lib_ring_buffer_get_records_lost_wrap(&client_config, buf);
@@ -580,12 +570,11 @@ static int client_stream_id(struct lttng_ust_lib_ring_buffer *buf,
                struct lttng_ust_shm_handle *handle,
                uint64_t *stream_id)
 {
-       struct packet_header *header;
+       struct channel *chan = shmp(handle, buf->backend.chan);
+       struct lttng_channel *lttng_chan = channel_get_private(chan);
+
+       *stream_id = lttng_chan->id;
 
-       header = client_packet_header(buf, handle);
-       if (!header)
-               return -1;
-       *stream_id = header->stream_id;
        return 0;
 }
 
@@ -608,6 +597,8 @@ static int client_sequence_number(struct lttng_ust_lib_ring_buffer *buf,
        struct packet_header *header;
 
        header = client_packet_header(buf, handle);
+       if (!header)
+               return -1;
        *seq = header->ctx.packet_seq_num;
        return 0;
 }
@@ -616,10 +607,8 @@ static int client_instance_id(struct lttng_ust_lib_ring_buffer *buf,
                struct lttng_ust_shm_handle *handle,
                uint64_t *id)
 {
-       struct packet_header *header;
+       *id = buf->backend.cpu;
 
-       header = client_packet_header(buf, handle);
-       *id = header->stream_instance_id;
        return 0;
 }
 
@@ -672,8 +661,6 @@ static const struct lttng_ust_lib_ring_buffer_config client_config = {
        .cb_ptr = &client_cb.parent,
 };
 
-const struct lttng_ust_client_lib_ring_buffer_client_cb *LTTNG_CLIENT_CALLBACKS = &client_cb;
-
 static
 struct lttng_channel *_channel_create(const char *name,
                                void *buf_addr,
@@ -719,7 +706,7 @@ int lttng_event_reserve(struct lttng_ust_lib_ring_buffer_ctx *ctx,
                      uint32_t event_id)
 {
        struct lttng_channel *lttng_chan = channel_get_private(ctx->chan);
-       struct lttng_event *event = ctx->priv;
+       struct lttng_ust_event_recorder *event_recorder = ctx->priv;
        struct lttng_stack_ctx *lttng_ctx = ctx->priv2;
        struct lttng_client_ctx client_ctx;
        int ret, cpu;
@@ -736,7 +723,7 @@ int lttng_event_reserve(struct lttng_ust_lib_ring_buffer_ctx *ctx,
                /* Pre 2.8 probe ABI. */
                ctx_get_struct_size(lttng_chan->ctx, &client_ctx.packet_context_len,
                                APP_CTX_DISABLED);
-               ctx_get_struct_size(event->ctx, &client_ctx.event_context_len,
+               ctx_get_struct_size(event_recorder->ctx, &client_ctx.event_context_len,
                                APP_CTX_DISABLED);
        }
 
@@ -847,13 +834,10 @@ static struct lttng_transport lttng_relay_transport = {
        .ops = {
                .channel_create = _channel_create,
                .channel_destroy = lttng_channel_destroy,
-               .u.has_strcpy = 1,
                .event_reserve = lttng_event_reserve,
                .event_commit = lttng_event_commit,
                .event_write = lttng_event_write,
                .packet_avail_size = NULL,      /* Would be racy anyway */
-               //.get_reader_wait_queue = lttng_get_reader_wait_queue,
-               //.get_hp_wait_queue = lttng_get_hp_wait_queue,
                .is_finalized = lttng_is_finalized,
                .is_disabled = lttng_is_disabled,
                .flush_buffer = lttng_flush_buffer,
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