Merge branch 'no-lttng-python-packages' into 'master'
Extract lttng interface implementation See merge request micro-ROS/ros_tracing/ros2_tracing!91
This commit is contained in:
Christophe Bedard
commit
ee068d28dd
4 changed files with 324 additions and 266 deletions
|
|
@ -41,9 +41,11 @@ build_disabled:
|
|||
<<: *global_artifacts
|
||||
|
||||
build_no_lttng:
|
||||
only:
|
||||
- schedules
|
||||
image: $base_image_id:base
|
||||
before_script:
|
||||
- vcs import < instrumentation.repos
|
||||
- rosdep install --from-paths . -i . -i /root/ws --rosdistro dashing -y --skip-keys "python3-lttng python3-babeltrace console_bridge fastcdr fastrtps libopensplice67 libopensplice69 rti-connext-dds-5.3.1 urdfdom_headers"
|
||||
- . /root/ws/install/local_setup.sh
|
||||
script:
|
||||
- colcon build --symlink-install --packages-up-to $PACKAGES_LIST
|
||||
- . install/local_setup.sh
|
||||
|
|
|
|||
|
|
@ -17,15 +17,19 @@
|
|||
from typing import List
|
||||
|
||||
try:
|
||||
import lttng
|
||||
from . import lttng_impl
|
||||
|
||||
_lttng = lttng_impl
|
||||
except ImportError:
|
||||
lttng = None
|
||||
# Fall back on empty functions
|
||||
from . import lttng_stub
|
||||
|
||||
_lttng = lttng_stub
|
||||
|
||||
from .names import DEFAULT_CONTEXT
|
||||
from .names import DEFAULT_EVENTS_KERNEL
|
||||
from .names import DEFAULT_EVENTS_ROS
|
||||
from .path import DEFAULT_BASE_PATH
|
||||
from .path import get_full_session_path
|
||||
|
||||
|
||||
def lttng_init(
|
||||
|
|
@ -44,10 +48,8 @@ def lttng_init(
|
|||
:param kernel_events: list of kernel events to enable
|
||||
:param context_names: list of context elements to enable
|
||||
"""
|
||||
if lttng is None:
|
||||
return None
|
||||
_lttng_setup(session_name, base_path, ros_events, kernel_events, context_names)
|
||||
_lttng_start(session_name)
|
||||
_lttng.setup(session_name, base_path, ros_events, kernel_events, context_names)
|
||||
_lttng.start(session_name)
|
||||
|
||||
|
||||
def lttng_fini(session_name: str) -> None:
|
||||
|
|
@ -56,260 +58,5 @@ def lttng_fini(session_name: str) -> None:
|
|||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
if lttng is None:
|
||||
return None
|
||||
_lttng_stop(session_name)
|
||||
_lttng_destroy(session_name)
|
||||
|
||||
|
||||
def _lttng_setup(
|
||||
session_name: str,
|
||||
base_path: str = DEFAULT_BASE_PATH,
|
||||
ros_events: List[str] = DEFAULT_EVENTS_ROS,
|
||||
kernel_events: List[str] = DEFAULT_EVENTS_KERNEL,
|
||||
context_names: List[str] = DEFAULT_CONTEXT,
|
||||
channel_name_ust: str = 'ros2',
|
||||
channel_name_kernel: str = 'kchan',
|
||||
) -> None:
|
||||
"""
|
||||
Set up LTTng session, with events and context.
|
||||
|
||||
See: https://lttng.org/docs/#doc-core-concepts
|
||||
|
||||
:param session_name: the name of the session
|
||||
:param base_path: the path to the directory in which to create the tracing session directory
|
||||
:param ros_events: list of ROS events to enable
|
||||
:param kernel_events: list of kernel events to enable
|
||||
:param context_names: list of context elements to enable
|
||||
:param channel_name_ust: the UST channel name
|
||||
:param channel_name_kernel: the kernel channel name
|
||||
"""
|
||||
# Resolve full tracing directory path
|
||||
full_path = get_full_session_path(session_name, base_path=base_path)
|
||||
|
||||
ust_enabled = ros_events is not None and len(ros_events) > 0
|
||||
kernel_enabled = kernel_events is not None and len(kernel_events) > 0
|
||||
|
||||
# Domains
|
||||
if ust_enabled:
|
||||
domain_ust = lttng.Domain()
|
||||
domain_ust.type = lttng.DOMAIN_UST
|
||||
# Per-user buffer
|
||||
domain_ust.buf_type = lttng.BUFFER_PER_UID
|
||||
channel_ust = lttng.Channel()
|
||||
channel_ust.name = channel_name_ust
|
||||
# Discard, do not overwrite
|
||||
channel_ust.attr.overwrite = 0
|
||||
# 8 sub-buffers of 2 times the usual page size
|
||||
channel_ust.attr.subbuf_size = 2 * 4096
|
||||
channel_ust.attr.num_subbuf = 8
|
||||
# Ignore switch timer interval and use read timer instead
|
||||
channel_ust.attr.switch_timer_interval = 0
|
||||
channel_ust.attr.read_timer_interval = 200
|
||||
# mmap channel output instead of splice
|
||||
channel_ust.attr.output = lttng.EVENT_MMAP
|
||||
events_list_ust = _create_events(ros_events)
|
||||
if kernel_enabled:
|
||||
domain_kernel = lttng.Domain()
|
||||
domain_kernel.type = lttng.DOMAIN_KERNEL
|
||||
# Global buffer (only option for kernel domain)
|
||||
domain_kernel.buf_type = lttng.BUFFER_GLOBAL
|
||||
channel_kernel = lttng.Channel()
|
||||
channel_kernel.name = channel_name_kernel
|
||||
# Discard, do not overwrite
|
||||
channel_kernel.attr.overwrite = 0
|
||||
# 8 sub-buffers of 8 times the usual page size, since
|
||||
# there can be way more kernel events than UST events
|
||||
channel_kernel.attr.subbuf_size = 8 * 4096
|
||||
channel_kernel.attr.num_subbuf = 8
|
||||
# Ignore switch timer interval and use read timer instead
|
||||
channel_kernel.attr.switch_timer_interval = 0
|
||||
channel_kernel.attr.read_timer_interval = 200
|
||||
# mmap channel output instead of splice
|
||||
channel_kernel.attr.output = lttng.EVENT_MMAP
|
||||
events_list_kernel = _create_events(kernel_events)
|
||||
|
||||
# Session
|
||||
_create_session(session_name, full_path)
|
||||
|
||||
# Handles, channels, events
|
||||
handle_ust = None
|
||||
if ust_enabled:
|
||||
handle_ust = _create_handle(session_name, domain_ust)
|
||||
_enable_channel(handle_ust, channel_ust)
|
||||
_enable_events(handle_ust, events_list_ust, channel_ust.name)
|
||||
handle_kernel = None
|
||||
if kernel_enabled:
|
||||
handle_kernel = _create_handle(session_name, domain_kernel)
|
||||
_enable_channel(handle_kernel, channel_kernel)
|
||||
_enable_events(handle_kernel, events_list_kernel, channel_kernel.name)
|
||||
|
||||
# Context
|
||||
context_list = _create_context_list(context_names)
|
||||
enabled_handles = [h for h in [handle_ust, handle_kernel] if h is not None]
|
||||
_add_context(enabled_handles, context_list)
|
||||
|
||||
|
||||
def _lttng_start(session_name: str) -> None:
|
||||
"""
|
||||
Start LTTng session, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
result = lttng.start(session_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to start tracing: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _lttng_stop(session_name: str) -> None:
|
||||
"""
|
||||
Stop LTTng session, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
result = lttng.stop(session_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to stop tracing: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _lttng_destroy(session_name: str) -> None:
|
||||
"""
|
||||
Destroy LTTng session, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
result = lttng.destroy(session_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to destroy tracing session: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _create_events(event_names_list: List[str]) -> List[lttng.Event]:
|
||||
"""
|
||||
Create events list from names.
|
||||
|
||||
:param event_names_list: a list of names to create events for
|
||||
:return: the list of events
|
||||
"""
|
||||
events_list = []
|
||||
for event_name in event_names_list:
|
||||
e = lttng.Event()
|
||||
e.name = event_name
|
||||
e.type = lttng.EVENT_TRACEPOINT
|
||||
e.loglevel_type = lttng.EVENT_LOGLEVEL_ALL
|
||||
events_list.append(e)
|
||||
return events_list
|
||||
|
||||
|
||||
def _create_session(session_name: str, full_path: str) -> None:
|
||||
"""
|
||||
Create session from name and full directory path, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
:param full_path: the full path to the main directory to write trace data to
|
||||
"""
|
||||
result = lttng.create(session_name, full_path)
|
||||
LTTNG_ERR_EXIST_SESS = 28
|
||||
if result == -LTTNG_ERR_EXIST_SESS:
|
||||
# Sessions seem to persist, so if it already exists,
|
||||
# just destroy it and try again
|
||||
_lttng_destroy(session_name)
|
||||
result = lttng.create(session_name, full_path)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'session creation failed: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _create_handle(session_name: str, domain: lttng.Domain) -> lttng.Handle:
|
||||
"""
|
||||
Create a handle for a given session name and a domain, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
:param domain: the domain to be used
|
||||
:return: the handle
|
||||
"""
|
||||
handle = None
|
||||
handle = lttng.Handle(session_name, domain)
|
||||
if handle is None:
|
||||
raise RuntimeError('handle creation failed')
|
||||
return handle
|
||||
|
||||
|
||||
def _enable_channel(handle: lttng.Handle, channel: lttng.Channel) -> None:
|
||||
"""
|
||||
Enable channel for a handle, and check for errors.
|
||||
|
||||
:param handle: the handle to be used
|
||||
:param channel: the channel to enable
|
||||
"""
|
||||
result = lttng.enable_channel(handle, channel)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'channel enabling failed: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _enable_events(
|
||||
handle: lttng.Handle,
|
||||
events_list: List[lttng.Event],
|
||||
channel_name: str,
|
||||
) -> None:
|
||||
"""
|
||||
Enable events list for a given handle and channel name, and check for errors.
|
||||
|
||||
:param handle: the handle to be used
|
||||
:param events_list: the list of events to enable
|
||||
:param channel_name: the name of the channel to associate
|
||||
"""
|
||||
for event in events_list:
|
||||
result = lttng.enable_event(handle, event, channel_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'event enabling failed: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
context_map = {
|
||||
'procname': lttng.EVENT_CONTEXT_PROCNAME,
|
||||
'pid': lttng.EVENT_CONTEXT_PID,
|
||||
'vpid': lttng.EVENT_CONTEXT_VPID,
|
||||
'vtid': lttng.EVENT_CONTEXT_VTID,
|
||||
}
|
||||
|
||||
|
||||
def _context_name_to_type(context_name: str) -> int:
|
||||
"""
|
||||
Convert from context name to LTTng enum/constant type.
|
||||
|
||||
:param context_name: the generic name for the context
|
||||
:return: the associated type
|
||||
"""
|
||||
return context_map.get(context_name)
|
||||
|
||||
|
||||
def _create_context_list(context_names_list: List[str]) -> List[lttng.EventContext]:
|
||||
"""
|
||||
Create context list from names, and check for errors.
|
||||
|
||||
:param context_names_list: the list of context names
|
||||
:return: the event context list
|
||||
"""
|
||||
context_list = []
|
||||
for c in context_names_list:
|
||||
ec = lttng.EventContext()
|
||||
context_type = _context_name_to_type(c)
|
||||
if context_type is not None:
|
||||
ec.ctx = context_type
|
||||
context_list.append(ec)
|
||||
return context_list
|
||||
|
||||
|
||||
def _add_context(
|
||||
handles: List[lttng.Handle],
|
||||
context_list: List[lttng.EventContext],
|
||||
) -> None:
|
||||
"""
|
||||
Add context list to given handles, and check for errors.
|
||||
|
||||
:param handles: the list of handles for which to add context
|
||||
:param context_list: the list of event contexts to add to the handles
|
||||
"""
|
||||
for handle in handles:
|
||||
for contex in context_list:
|
||||
result = lttng.add_context(handle, contex, None, None)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to add context: {lttng.strerror(result)}')
|
||||
_lttng.stop(session_name)
|
||||
_lttng.destroy(session_name)
|
||||
|
|
|
|||
278
tracetools_trace/tracetools_trace/tools/lttng_impl.py
Normal file
278
tracetools_trace/tracetools_trace/tools/lttng_impl.py
Normal file
|
|
@ -0,0 +1,278 @@
|
|||
# Copyright 2019 Robert Bosch GmbH
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
"""Implementation of the interface for tracing with LTTng."""
|
||||
|
||||
from typing import List
|
||||
|
||||
import lttng
|
||||
|
||||
from .names import DEFAULT_CONTEXT
|
||||
from .names import DEFAULT_EVENTS_KERNEL
|
||||
from .names import DEFAULT_EVENTS_ROS
|
||||
from .path import DEFAULT_BASE_PATH
|
||||
from .path import get_full_session_path
|
||||
|
||||
|
||||
def setup(
|
||||
session_name: str,
|
||||
base_path: str = DEFAULT_BASE_PATH,
|
||||
ros_events: List[str] = DEFAULT_EVENTS_ROS,
|
||||
kernel_events: List[str] = DEFAULT_EVENTS_KERNEL,
|
||||
context_names: List[str] = DEFAULT_CONTEXT,
|
||||
channel_name_ust: str = 'ros2',
|
||||
channel_name_kernel: str = 'kchan',
|
||||
) -> None:
|
||||
"""
|
||||
Set up LTTng session, with events and context.
|
||||
|
||||
See: https://lttng.org/docs/#doc-core-concepts
|
||||
|
||||
:param session_name: the name of the session
|
||||
:param base_path: the path to the directory in which to create the tracing session directory
|
||||
:param ros_events: list of ROS events to enable
|
||||
:param kernel_events: list of kernel events to enable
|
||||
:param context_names: list of context elements to enable
|
||||
:param channel_name_ust: the UST channel name
|
||||
:param channel_name_kernel: the kernel channel name
|
||||
"""
|
||||
# Resolve full tracing directory path
|
||||
full_path = get_full_session_path(session_name, base_path=base_path)
|
||||
|
||||
ust_enabled = ros_events is not None and len(ros_events) > 0
|
||||
kernel_enabled = kernel_events is not None and len(kernel_events) > 0
|
||||
|
||||
# Domains
|
||||
if ust_enabled:
|
||||
domain_ust = lttng.Domain()
|
||||
domain_ust.type = lttng.DOMAIN_UST
|
||||
# Per-user buffer
|
||||
domain_ust.buf_type = lttng.BUFFER_PER_UID
|
||||
channel_ust = lttng.Channel()
|
||||
channel_ust.name = channel_name_ust
|
||||
# Discard, do not overwrite
|
||||
channel_ust.attr.overwrite = 0
|
||||
# 8 sub-buffers of 2 times the usual page size
|
||||
channel_ust.attr.subbuf_size = 2 * 4096
|
||||
channel_ust.attr.num_subbuf = 8
|
||||
# Ignore switch timer interval and use read timer instead
|
||||
channel_ust.attr.switch_timer_interval = 0
|
||||
channel_ust.attr.read_timer_interval = 200
|
||||
# mmap channel output instead of splice
|
||||
channel_ust.attr.output = lttng.EVENT_MMAP
|
||||
events_list_ust = _create_events(ros_events)
|
||||
if kernel_enabled:
|
||||
domain_kernel = lttng.Domain()
|
||||
domain_kernel.type = lttng.DOMAIN_KERNEL
|
||||
# Global buffer (only option for kernel domain)
|
||||
domain_kernel.buf_type = lttng.BUFFER_GLOBAL
|
||||
channel_kernel = lttng.Channel()
|
||||
channel_kernel.name = channel_name_kernel
|
||||
# Discard, do not overwrite
|
||||
channel_kernel.attr.overwrite = 0
|
||||
# 8 sub-buffers of 8 times the usual page size, since
|
||||
# there can be way more kernel events than UST events
|
||||
channel_kernel.attr.subbuf_size = 8 * 4096
|
||||
channel_kernel.attr.num_subbuf = 8
|
||||
# Ignore switch timer interval and use read timer instead
|
||||
channel_kernel.attr.switch_timer_interval = 0
|
||||
channel_kernel.attr.read_timer_interval = 200
|
||||
# mmap channel output instead of splice
|
||||
channel_kernel.attr.output = lttng.EVENT_MMAP
|
||||
events_list_kernel = _create_events(kernel_events)
|
||||
|
||||
# Session
|
||||
_create_session(session_name, full_path)
|
||||
|
||||
# Handles, channels, events
|
||||
handle_ust = None
|
||||
if ust_enabled:
|
||||
handle_ust = _create_handle(session_name, domain_ust)
|
||||
_enable_channel(handle_ust, channel_ust)
|
||||
_enable_events(handle_ust, events_list_ust, channel_ust.name)
|
||||
handle_kernel = None
|
||||
if kernel_enabled:
|
||||
handle_kernel = _create_handle(session_name, domain_kernel)
|
||||
_enable_channel(handle_kernel, channel_kernel)
|
||||
_enable_events(handle_kernel, events_list_kernel, channel_kernel.name)
|
||||
|
||||
# Context
|
||||
context_list = _create_context_list(context_names)
|
||||
enabled_handles = [h for h in [handle_ust, handle_kernel] if h is not None]
|
||||
_add_context(enabled_handles, context_list)
|
||||
|
||||
|
||||
def start(session_name: str) -> None:
|
||||
"""
|
||||
Start LTTng session, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
result = lttng.start(session_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to start tracing: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def stop(session_name: str) -> None:
|
||||
"""
|
||||
Stop LTTng session, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
result = lttng.stop(session_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to stop tracing: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def destroy(session_name: str) -> None:
|
||||
"""
|
||||
Destroy LTTng session, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
"""
|
||||
result = lttng.destroy(session_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to destroy tracing session: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _create_events(event_names_list: List[str]) -> List[lttng.Event]:
|
||||
"""
|
||||
Create events list from names.
|
||||
|
||||
:param event_names_list: a list of names to create events for
|
||||
:return: the list of events
|
||||
"""
|
||||
events_list = []
|
||||
for event_name in event_names_list:
|
||||
e = lttng.Event()
|
||||
e.name = event_name
|
||||
e.type = lttng.EVENT_TRACEPOINT
|
||||
e.loglevel_type = lttng.EVENT_LOGLEVEL_ALL
|
||||
events_list.append(e)
|
||||
return events_list
|
||||
|
||||
|
||||
def _create_session(session_name: str, full_path: str) -> None:
|
||||
"""
|
||||
Create session from name and full directory path, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
:param full_path: the full path to the main directory to write trace data to
|
||||
"""
|
||||
result = lttng.create(session_name, full_path)
|
||||
LTTNG_ERR_EXIST_SESS = 28
|
||||
if result == -LTTNG_ERR_EXIST_SESS:
|
||||
# Sessions seem to persist, so if it already exists,
|
||||
# just destroy it and try again
|
||||
destroy(session_name)
|
||||
result = lttng.create(session_name, full_path)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'session creation failed: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _create_handle(session_name: str, domain: lttng.Domain) -> lttng.Handle:
|
||||
"""
|
||||
Create a handle for a given session name and a domain, and check for errors.
|
||||
|
||||
:param session_name: the name of the session
|
||||
:param domain: the domain to be used
|
||||
:return: the handle
|
||||
"""
|
||||
handle = None
|
||||
handle = lttng.Handle(session_name, domain)
|
||||
if handle is None:
|
||||
raise RuntimeError('handle creation failed')
|
||||
return handle
|
||||
|
||||
|
||||
def _enable_channel(handle: lttng.Handle, channel: lttng.Channel) -> None:
|
||||
"""
|
||||
Enable channel for a handle, and check for errors.
|
||||
|
||||
:param handle: the handle to be used
|
||||
:param channel: the channel to enable
|
||||
"""
|
||||
result = lttng.enable_channel(handle, channel)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'channel enabling failed: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
def _enable_events(
|
||||
handle: lttng.Handle,
|
||||
events_list: List[lttng.Event],
|
||||
channel_name: str,
|
||||
) -> None:
|
||||
"""
|
||||
Enable events list for a given handle and channel name, and check for errors.
|
||||
|
||||
:param handle: the handle to be used
|
||||
:param events_list: the list of events to enable
|
||||
:param channel_name: the name of the channel to associate
|
||||
"""
|
||||
for event in events_list:
|
||||
result = lttng.enable_event(handle, event, channel_name)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'event enabling failed: {lttng.strerror(result)}')
|
||||
|
||||
|
||||
context_map = {
|
||||
'procname': lttng.EVENT_CONTEXT_PROCNAME,
|
||||
'pid': lttng.EVENT_CONTEXT_PID,
|
||||
'vpid': lttng.EVENT_CONTEXT_VPID,
|
||||
'vtid': lttng.EVENT_CONTEXT_VTID,
|
||||
}
|
||||
|
||||
|
||||
def _context_name_to_type(context_name: str) -> int:
|
||||
"""
|
||||
Convert from context name to LTTng enum/constant type.
|
||||
|
||||
:param context_name: the generic name for the context
|
||||
:return: the associated type
|
||||
"""
|
||||
return context_map.get(context_name)
|
||||
|
||||
|
||||
def _create_context_list(context_names_list: List[str]) -> List[lttng.EventContext]:
|
||||
"""
|
||||
Create context list from names, and check for errors.
|
||||
|
||||
:param context_names_list: the list of context names
|
||||
:return: the event context list
|
||||
"""
|
||||
context_list = []
|
||||
for c in context_names_list:
|
||||
ec = lttng.EventContext()
|
||||
context_type = _context_name_to_type(c)
|
||||
if context_type is not None:
|
||||
ec.ctx = context_type
|
||||
context_list.append(ec)
|
||||
return context_list
|
||||
|
||||
|
||||
def _add_context(
|
||||
handles: List[lttng.Handle],
|
||||
context_list: List[lttng.EventContext],
|
||||
) -> None:
|
||||
"""
|
||||
Add context list to given handles, and check for errors.
|
||||
|
||||
:param handles: the list of handles for which to add context
|
||||
:param context_list: the list of event contexts to add to the handles
|
||||
"""
|
||||
for handle in handles:
|
||||
for contex in context_list:
|
||||
result = lttng.add_context(handle, contex, None, None)
|
||||
if result < 0:
|
||||
raise RuntimeError(f'failed to add context: {lttng.strerror(result)}')
|
||||
31
tracetools_trace/tracetools_trace/tools/lttng_stub.py
Normal file
31
tracetools_trace/tracetools_trace/tools/lttng_stub.py
Normal file
|
|
@ -0,0 +1,31 @@
|
|||
# Copyright 2019 Robert Bosch GmbH
|
||||
#
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
"""Stub version of the interface for tracing with LTTng."""
|
||||
|
||||
|
||||
def setup(*args, **kwargs) -> None:
|
||||
pass
|
||||
|
||||
|
||||
def start(*args, **kwargs) -> None:
|
||||
pass
|
||||
|
||||
|
||||
def stop(*args, **kwargs) -> None:
|
||||
pass
|
||||
|
||||
|
||||
def destroy(*args, **kwargs) -> None:
|
||||
pass
|
||||
Loading…
Add table
Add a link
Reference in a new issue