/*
- * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
- * Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- * Copyright (C) 2017 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2011 Julien Desfossez <julien.desfossez@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
*
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+#include "common/buffer-view.h"
+#include <stdint.h>
#define _LGPL_SOURCE
#include <assert.h>
#include <poll.h>
return ret;
}
+static
+int get_current_subbuf_addr(struct lttng_consumer_stream *stream,
+ const char **addr)
+{
+ int ret;
+ unsigned long mmap_offset;
+ const char *mmap_base = stream->mmap_base;
+
+ ret = kernctl_get_mmap_read_offset(stream->wait_fd, &mmap_offset);
+ if (ret < 0) {
+ PERROR("Failed to get mmap read offset");
+ goto error;
+ }
+
+ *addr = mmap_base + mmap_offset;
+error:
+ return ret;
+}
+
/*
* Take a snapshot of all the stream of a channel
* RCU read-side lock must be held across this function to ensure existence of
while ((long) (consumed_pos - produced_pos) < 0) {
ssize_t read_len;
unsigned long len, padded_len;
+ const char *subbuf_addr;
+ struct lttng_buffer_view subbuf_view;
health_code_update();
-
DBG("Kernel consumer taking snapshot at pos %lu", consumed_pos);
ret = kernctl_get_subbuf(stream->wait_fd, &consumed_pos);
goto error_put_subbuf;
}
- read_len = lttng_consumer_on_read_subbuffer_mmap(ctx, stream, len,
+ ret = get_current_subbuf_addr(stream, &subbuf_addr);
+ if (ret) {
+ goto error_put_subbuf;
+ }
+
+ subbuf_view = lttng_buffer_view_init(
+ subbuf_addr, 0, padded_len);
+ read_len = lttng_consumer_on_read_subbuffer_mmap(ctx,
+ stream, &subbuf_view,
padded_len - len, NULL);
/*
* We write the padded len in local tracefiles but the data len
msg.u.channel.tracefile_count, 0,
msg.u.channel.monitor,
msg.u.channel.live_timer_interval,
+ msg.u.channel.is_live,
NULL, NULL);
if (new_channel == NULL) {
lttng_consumer_send_error(ctx, LTTCOMM_CONSUMERD_OUTFD_ERROR);
health_code_update();
pthread_mutex_lock(&channel->lock);
- new_stream = consumer_allocate_stream(channel->key,
+ new_stream = consumer_allocate_stream(
+ channel,
+ channel->key,
fd,
channel->name,
channel->relayd_id,
goto error_add_stream_nosignal;
}
- new_stream->chan = channel;
new_stream->wait_fd = fd;
ret = kernctl_get_max_subbuf_size(new_stream->wait_fd,
&new_stream->max_sb_size);
error_rotate_channel:
goto end_nosignal;
}
+ case LTTNG_CONSUMER_CLEAR_CHANNEL:
+ {
+ struct lttng_consumer_channel *channel;
+ uint64_t key = msg.u.clear_channel.key;
+
+ channel = consumer_find_channel(key);
+ if (!channel) {
+ DBG("Channel %" PRIu64 " not found", key);
+ ret_code = LTTCOMM_CONSUMERD_CHAN_NOT_FOUND;
+ } else {
+ ret = lttng_consumer_clear_channel(channel);
+ if (ret) {
+ ERR("Clear channel failed");
+ ret_code = ret;
+ }
+
+ health_code_update();
+ }
+ ret = consumer_send_status_msg(sock, ret_code);
+ if (ret < 0) {
+ /* Somehow, the session daemon is not responding anymore. */
+ goto end_nosignal;
+ }
+
+ break;
+ }
case LTTNG_CONSUMER_INIT:
{
ret_code = lttng_consumer_init_command(ctx,
*msg.u.create_trace_chunk.override_name ?
msg.u.create_trace_chunk.override_name :
NULL;
- LTTNG_OPTIONAL(struct lttng_directory_handle) chunk_directory_handle =
- LTTNG_OPTIONAL_INIT;
+ struct lttng_directory_handle *chunk_directory_handle = NULL;
/*
* The session daemon will only provide a chunk directory file
DBG("Received trace chunk directory fd (%d)",
chunk_dirfd);
- ret = lttng_directory_handle_init_from_dirfd(
- &chunk_directory_handle.value,
+ chunk_directory_handle = lttng_directory_handle_create_from_dirfd(
chunk_dirfd);
- if (ret) {
+ if (!chunk_directory_handle) {
ERR("Failed to initialize chunk directory handle from directory file descriptor");
if (close(chunk_dirfd)) {
PERROR("Failed to close chunk directory file descriptor");
}
goto error_fatal;
}
- chunk_directory_handle.is_set = true;
}
ret_code = lttng_consumer_create_trace_chunk(
msg.u.create_trace_chunk.credentials.is_set ?
&credentials :
NULL,
- chunk_directory_handle.is_set ?
- &chunk_directory_handle.value :
- NULL);
-
- if (chunk_directory_handle.is_set) {
- lttng_directory_handle_fini(
- &chunk_directory_handle.value);
- }
+ chunk_directory_handle);
+ lttng_directory_handle_put(chunk_directory_handle);
goto end_msg_sessiond;
}
case LTTNG_CONSUMER_CLOSE_TRACE_CHUNK:
if (ret == -ENOTTY) {
/* Command not implemented by lttng-modules. */
seq = -1ULL;
+ stream->sequence_number_unavailable = true;
} else {
PERROR("kernctl_get_sequence_number");
goto end;
int err, write_index = 1, rotation_ret;
ssize_t ret = 0;
int infd = stream->wait_fd;
- struct ctf_packet_index index;
+ struct ctf_packet_index index = {};
DBG("In read_subbuffer (infd : %d)", infd);
}
break;
case CONSUMER_CHANNEL_MMAP:
+ {
+ const char *subbuf_addr;
+ struct lttng_buffer_view subbuf_view;
+
/* Get subbuffer size without padding */
err = kernctl_get_subbuf_size(infd, &subbuf_size);
if (err != 0) {
goto error;
}
+ ret = get_current_subbuf_addr(stream, &subbuf_addr);
+ if (ret) {
+ goto error_put_subbuf;
+ }
+
/* Make sure the tracer is not gone mad on us! */
assert(len >= subbuf_size);
padding = len - subbuf_size;
+ subbuf_view = lttng_buffer_view_init(subbuf_addr, 0, len);
+
/* write the subbuffer to the tracefile */
- ret = lttng_consumer_on_read_subbuffer_mmap(ctx, stream, subbuf_size,
- padding, &index);
+ ret = lttng_consumer_on_read_subbuffer_mmap(
+ ctx, stream, &subbuf_view, padding, &index);
/*
- * The mmap operation should write subbuf_size amount of data when
- * network streaming or the full padding (len) size when we are _not_
- * streaming.
+ * The mmap operation should write subbuf_size amount of data
+ * when network streaming or the full padding (len) size when we
+ * are _not_ streaming.
*/
if ((ret != subbuf_size && stream->net_seq_idx != (uint64_t) -1ULL) ||
(ret != len && stream->net_seq_idx == (uint64_t) -1ULL)) {
write_index = 0;
}
break;
+ }
default:
ERR("Unknown output method");
ret = -EPERM;
}
-
+error_put_subbuf:
err = kernctl_put_next_subbuf(infd);
if (err != 0) {
if (err == -EFAULT) {
projects / lttng-tools.git / blobdiff