+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; only version 2 of the License.
- *
- * 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., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <string.h>
-#include <unistd.h>
-
-#include <lttng/lttng.h>
-#include <lttng-sessiond-comm.h>
-#include <lttngerr.h>
-#ifdef CONFIG_LTTNG_TOOLS_HAVE_UST
-#include <ust/lttng-ust-ctl.h>
-#include <ust/lttng-ust-abi.h>
-#else
-#include "lttng-ust-ctl.h"
-#include "lttng-ust-abi.h"
-#endif
-
-#include "channel.h"
-#include "hashtable.h"
-#include "kernel-ctl.h"
-#include "ust-ctl.h"
-#include "utils.h"
-
-/*
- * Return allocated channel attributes.
- */
-struct lttng_channel *channel_new_default_attr(int dom)
-{
- struct lttng_channel *chan;
-
- chan = zmalloc(sizeof(struct lttng_channel));
- if (chan == NULL) {
- perror("malloc channel init");
- goto error_alloc;
- }
-
- if (snprintf(chan->name, sizeof(chan->name), "%s",
- DEFAULT_CHANNEL_NAME) < 0) {
- perror("snprintf default channel name");
- goto error;
- }
-
- chan->attr.overwrite = DEFAULT_CHANNEL_OVERWRITE;
- chan->attr.switch_timer_interval = DEFAULT_CHANNEL_SWITCH_TIMER;
- chan->attr.read_timer_interval = DEFAULT_CHANNEL_READ_TIMER;
-
- switch (dom) {
- case LTTNG_DOMAIN_KERNEL:
- chan->attr.subbuf_size = DEFAULT_KERNEL_CHANNEL_SUBBUF_SIZE;
- chan->attr.num_subbuf = DEFAULT_KERNEL_CHANNEL_SUBBUF_NUM;
- chan->attr.output = DEFAULT_KERNEL_CHANNEL_OUTPUT;
- break;
- case LTTNG_DOMAIN_UST:
- case LTTNG_DOMAIN_UST_PID:
- chan->attr.subbuf_size = DEFAULT_UST_CHANNEL_SUBBUF_SIZE;
- chan->attr.num_subbuf = DEFAULT_UST_CHANNEL_SUBBUF_NUM;
- chan->attr.output = DEFAULT_UST_CHANNEL_OUTPUT;
- break;
- default:
- goto error; /* Not implemented */
- }
-
- return chan;
-
-error:
- free(chan);
-error_alloc:
- return NULL;
-}
-
-/*
- * Copy two ltt ust channel. Dst and src must be already allocated.
- */
-int channel_ust_copy(struct ltt_ust_channel *dst,
- struct ltt_ust_channel *src)
-{
- //struct ltt_ust_event *uevent, *new_uevent;
-
- memcpy(dst, src, sizeof(struct ltt_ust_channel));
- dst->events = hashtable_new_str(0);
-
- /*
- cds_list_for_each_entry(uevent, &src->events.head, list) {
- new_uevent = malloc(sizeof(struct ltt_ust_event));
- if (new_uevent == NULL) {
- perror("malloc ltt_ust_event");
- goto error;
- }
-
- memcpy(new_uevent, uevent, sizeof(struct ltt_ust_event));
- cds_list_add(&new_uevent->list, &dst->events.head);
- dst->events.count++;
- }
- */
-
- return 0;
-
-//error:
-// return -1;
-}
-
-/*
- * Disable kernel channel of the kernel session.
- */
-int channel_kernel_disable(struct ltt_kernel_session *ksession,
- char *channel_name)
-{
- int ret;
- struct ltt_kernel_channel *kchan;
-
- kchan = trace_kernel_get_channel_by_name(channel_name, ksession);
- if (kchan == NULL) {
- ret = LTTCOMM_KERN_CHAN_NOT_FOUND;
- goto error;
- } else if (kchan->enabled == 1) {
- ret = kernel_disable_channel(kchan);
- if (ret < 0) {
- if (ret != EEXIST) {
- ret = LTTCOMM_KERN_CHAN_DISABLE_FAIL;
- }
- goto error;
- }
- }
-
- ret = LTTCOMM_OK;
-
-error:
- return ret;
-}
-
-/*
- * Enable kernel channel of the kernel session.
- */
-int channel_kernel_enable(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
-{
- int ret;
-
- if (kchan->enabled == 0) {
- ret = kernel_enable_channel(kchan);
- if (ret < 0) {
- ret = LTTCOMM_KERN_CHAN_ENABLE_FAIL;
- goto error;
- }
- }
-
- ret = LTTCOMM_OK;
-
-error:
- return ret;
-}
-
-/*
- * Create kernel channel of the kernel session and notify kernel thread.
- */
-int channel_kernel_create(struct ltt_kernel_session *ksession,
- struct lttng_channel *chan, int kernel_pipe)
-{
- int ret;
- struct lttng_channel *attr = chan;
-
- /* Creating channel attributes if needed */
- if (attr == NULL) {
- /* FIXME: this appears to be a memory leak */
- attr = channel_new_default_attr(LTTNG_DOMAIN_KERNEL);
- if (attr == NULL) {
- ret = LTTCOMM_FATAL;
- goto error;
- }
- }
-
- /* Channel not found, creating it */
- ret = kernel_create_channel(ksession, attr, ksession->trace_path);
- if (ret < 0) {
- ret = LTTCOMM_KERN_CHAN_FAIL;
- goto error;
- }
-
- /* Notify kernel thread that there is a new channel */
- ret = notify_thread_pipe(kernel_pipe);
- if (ret < 0) {
- ret = LTTCOMM_FATAL;
- goto error;
- }
-
- ret = LTTCOMM_OK;
-
-error:
- return ret;
-}
-
-/*
- * Create UST channel and enable it on the tracer.
- */
-int channel_ust_create(struct ltt_ust_session *usess,
- struct lttng_channel *attr)
-{
- int ret;
- struct ltt_ust_channel *uchan;
- //struct lttng_ust_channel_attr uattr;
- //struct object_data *obj;
-
- uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
- attr->name);
- if (uchan == NULL) {
- uchan = trace_ust_create_channel(attr, usess->pathname);
- if (uchan == NULL) {
- ret = LTTCOMM_UST_CHAN_FAIL;
- goto error;
- }
- rcu_read_lock();
- hashtable_add_unique(usess->domain_global.channels, &uchan->node);
- rcu_read_unlock();
- } else {
- ret = LTTCOMM_UST_CHAN_EXIST;
- goto error;
- }
-
- /* TODO: NOTIFY ust application to update */
- /*
- ret = ustctl_create_channel(sock, usession->handle, &uattr, &obj);
- if (ret < 0) {
- ret = LTTCOMM_UST_CHAN_FAIL;
- goto error;
- }
- */
-
- /*
- uchan->attr.overwrite = uattr.overwrite;
- uchan->attr.subbuf_size = uattr.subbuf_size;
- uchan->attr.num_subbuf = uattr.num_subbuf;
- uchan->attr.switch_timer_interval = uattr.switch_timer_interval;
- uchan->attr.read_timer_interval = uattr.read_timer_interval;
- uchan->attr.output = uattr.output;
- uchan->handle = obj->handle;
- uchan->attr.shm_fd = obj->shm_fd;
- uchan->attr.wait_fd = obj->wait_fd;
- uchan->attr.memory_map_size = obj->memory_map_size;
- uchan->obj = obj;
- */
-
- /* Add channel to session */
- //rcu_read_lock();
- //cds_list_add(&uchan->list, &usession->channels.head);
- //usession->channels.count++;
- //rcu_read_unlock();
-
- //DBG2("Channel %s UST create successfully for sock:%d", uchan->name, sock);
-
- ret = LTTCOMM_OK;
-
-error:
- return ret;
-}
-
-/*
- * Enable UST channel on the tracer.
- */
-int channel_ust_enable(struct ltt_ust_session *usession,
- struct ltt_ust_channel *uchan, int sock)
-{
- int ret = LTTCOMM_OK;
-#ifdef DISABLE
- struct object_data obj;
-
- obj.shm_fd = uchan->attr.shm_fd;
- obj.wait_fd = uchan->attr.wait_fd;
- obj.memory_map_size = uchan->attr.memory_map_size;
- ret = ustctl_enable(sock, &obj);
- if (ret < 0) {
- ret = LTTCOMM_UST_CHAN_FAIL;
- goto end;
- }
- ret = LTTCOMM_OK;
-end:
-#endif
- return ret;
-}
-
-/*
- * Disable UST channel on the tracer.
- */
-int channel_ust_disable(struct ltt_ust_session *usession,
- struct ltt_ust_channel *uchan, int sock)
-{
- int ret = LTTCOMM_OK;
-#ifdef DISABLE
- struct object_data obj;
-
- obj.shm_fd = uchan->attr.shm_fd;
- obj.wait_fd = uchan->attr.wait_fd;
- obj.memory_map_size = uchan->attr.memory_map_size;
- ret = ustctl_disable(sock, &obj);
- if (ret < 0) {
- ret = LTTCOMM_UST_CHAN_FAIL;
- goto end;
- }
- ret = LTTCOMM_OK;
-end:
-#endif
- return ret;
-}
projects / lttng-tools.git / blobdiff