/
gen.py
1042 lines (839 loc) · 39.1 KB
/
gen.py
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# The MIT License (MIT)
#
# Copyright (c) 2014-2016 Philippe Proulx <pproulx@efficios.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
from barectf import templates
from barectf import metadata
import barectf.codegen
import collections
import argparse
import datetime
import barectf
import sys
import os
import re
def _align(v, align):
return (v + (align - 1)) & -align
class _StaticAlignSizeAutomatonByteOffset:
def __init__(self):
self._byte_offset = 0
self._type_to_update_byte_offset_func = {
metadata.Integer: self._write_static_size,
metadata.FloatingPoint: self._write_static_size,
metadata.Enum: self._write_static_size,
metadata.String: self._write_string_size,
}
@property
def byte_offset(self):
return self._byte_offset
@byte_offset.setter
def byte_offset(self, value):
self._byte_offset = value
def _wrap_byte_offset(self):
self._byte_offset %= 8
def align(self, align):
# align byte offset
self._byte_offset = _align(self._byte_offset, align)
# wrap on current byte
self._wrap_byte_offset()
def write_type(self, t):
self._type_to_update_byte_offset_func[type(t)](t)
def _write_string_size(self, t):
self.reset()
def _write_static_size(self, t):
# increment byte offset
self._byte_offset += t.size
# wrap on current byte
self._wrap_byte_offset()
def reset(self):
# reset byte offset
self._byte_offset = 0
def set_unknown(self):
self._byte_offset = None
class _StaticAlignSizeAutomatonPreSize:
def __init__(self):
self.reset(1)
def reset(self, initial_align):
self._max_align = initial_align
self._size = 0
def add_type(self, t):
if t.align > self._max_align:
# type alignment is greater than the maximum alignment we
# got so far since the last reset, so we don't know how many
# padding bits are needed between this type and the previous
# one, hence the static size is set to the type's size
# (since we're aligned) and our new alignment is saved
self._max_align = t.align
if type(t) is metadata.Struct:
self._size = 0
else:
self._size = t.size
return False
else:
# type alignment is lesser than or equal to the maximum
# alignment we got so far, so we just align the static size
# and add the type's size
self._size = _align(self._size, t.align)
if type(t) is not metadata.Struct:
self._size += t.size
return True
@property
def size(self):
return self._size
_PREFIX_TPH = 'tph_'
_PREFIX_SPC = 'spc_'
_PREFIX_SEH = 'seh_'
_PREFIX_SEC = 'sec_'
_PREFIX_EC = 'ec_'
_PREFIX_EP = 'ep_'
class CCodeGenerator:
def __init__(self, cfg):
self._cfg = cfg
self._cg = barectf.codegen.CodeGenerator('\t')
self._type_to_get_ctype_func = {
metadata.Integer: self._get_int_ctype,
metadata.FloatingPoint: self._get_float_ctype,
metadata.Enum: self._get_enum_ctype,
metadata.String: self._get_string_ctype,
}
self._type_to_generate_serialize_func = {
metadata.Integer: self._generate_serialize_int,
metadata.FloatingPoint: self._generate_serialize_float,
metadata.Enum: self._generate_serialize_enum,
metadata.String: self._generate_serialize_string,
}
self._saved_byte_offsets = {}
self._sasa = _StaticAlignSizeAutomatonByteOffset()
def _generate_ctx_parent(self):
tmpl = templates._CTX_PARENT
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix))
def _generate_ctx(self, stream):
tmpl = templates._CTX_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name))
tmpl = 'uint32_t off_tph_{fname};'
self._cg.indent()
trace_packet_header_type = self._cfg.metadata.trace.packet_header_type
if trace_packet_header_type is not None:
for field_name in trace_packet_header_type.fields:
self._cg.add_lines(tmpl.format(fname=field_name))
tmpl = 'uint32_t off_spc_{fname};'
if stream.packet_context_type is not None:
for field_name in stream.packet_context_type.fields:
self._cg.add_lines(tmpl.format(fname=field_name))
self._cg.unindent()
tmpl = templates._CTX_END
self._cg.add_lines(tmpl)
def _generate_ctxs(self):
for stream in self._cfg.metadata.streams.values():
self._generate_ctx(stream)
def _generate_clock_cb(self, clock):
tmpl = templates._CLOCK_CB
self._cg.add_lines(tmpl.format(return_ctype=clock.return_ctype,
cname=clock.name))
def _generate_clock_cbs(self):
for clock in self._cfg.metadata.clocks.values():
self._generate_clock_cb(clock)
def _generate_platform_callbacks(self):
tmpl = templates._PLATFORM_CALLBACKS_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix))
self._cg.indent()
self._generate_clock_cbs()
self._cg.unindent()
tmpl = templates._PLATFORM_CALLBACKS_END
self._cg.add_lines(tmpl)
def generate_bitfield_header(self):
self._cg.reset()
tmpl = templates._BITFIELD
tmpl = tmpl.replace('$prefix$', self._cfg.prefix)
tmpl = tmpl.replace('$PREFIX$', self._cfg.prefix.upper())
if self._cfg.metadata.trace.byte_order == metadata.ByteOrder.BE:
endian_def = 'BIG_ENDIAN'
else:
endian_def = 'LITTLE_ENDIAN'
tmpl = tmpl.replace('$ENDIAN_DEF$', endian_def)
self._cg.add_lines(tmpl)
return self._cg.code
def _generate_func_init_proto(self):
tmpl = templates._FUNC_INIT_PROTO
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix))
def _get_int_ctype(self, t):
signed = 'u' if not t.signed else ''
if t.size <= 8:
sz = '8'
elif t.size <= 16:
sz = '16'
elif t.size <= 32:
sz = '32'
elif t.size == 64:
sz = '64'
return '{}int{}_t'.format(signed, sz)
def _get_float_ctype(self, t):
if t.exp_size == 8 and t.mant_size == 24 and t.align == 32:
ctype = 'float'
elif t.exp_size == 11 and t.mant_size == 53 and t.align == 64:
ctype = 'double'
else:
ctype = 'uint64_t'
return ctype
def _get_enum_ctype(self, t):
return self._get_int_ctype(t.value_type)
def _get_string_ctype(self, t):
return 'const char *'
def _get_type_ctype(self, t):
return self._type_to_get_ctype_func[type(t)](t)
def _generate_type_ctype(self, t):
ctype = self._get_type_ctype(t)
self._cg.append_to_last_line(ctype)
def _generate_proto_param(self, t, name):
self._generate_type_ctype(t)
self._cg.append_to_last_line(' ')
self._cg.append_to_last_line(name)
def _generate_proto_params(self, t, name_prefix, exclude_list):
self._cg.indent()
for field_name, field_type in t.fields.items():
if field_name in exclude_list:
continue
name = name_prefix + field_name
self._cg.append_to_last_line(',')
self._cg.add_line('')
self._generate_proto_param(field_type, name)
self._cg.unindent()
def _generate_func_open_proto(self, stream):
tmpl = templates._FUNC_OPEN_PROTO_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name))
trace_packet_header_type = self._cfg.metadata.trace.packet_header_type
if trace_packet_header_type is not None:
exclude_list = ['magic', 'stream_id', 'uuid']
self._generate_proto_params(trace_packet_header_type, _PREFIX_TPH,
exclude_list)
if stream.packet_context_type is not None:
exclude_list = [
'timestamp_begin',
'timestamp_end',
'packet_size',
'content_size',
'events_discarded',
]
self._generate_proto_params(stream.packet_context_type,
_PREFIX_SPC, exclude_list)
tmpl = templates._FUNC_OPEN_PROTO_END
self._cg.add_lines(tmpl)
def _generate_func_close_proto(self, stream):
tmpl = templates._FUNC_CLOSE_PROTO
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name))
def _generate_func_trace_proto_params(self, stream, event):
if stream.event_header_type is not None:
exclude_list = [
'id',
'timestamp',
]
self._generate_proto_params(stream.event_header_type,
_PREFIX_SEH, exclude_list)
if stream.event_context_type is not None:
self._generate_proto_params(stream.event_context_type,
_PREFIX_SEC, [])
if event.context_type is not None:
self._generate_proto_params(event.context_type,
_PREFIX_EC, [])
if event.payload_type is not None:
self._generate_proto_params(event.payload_type,
_PREFIX_EP, [])
def _generate_func_trace_proto(self, stream, event):
tmpl = templates._FUNC_TRACE_PROTO_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name, evname=event.name))
self._generate_func_trace_proto_params(stream, event)
tmpl = templates._FUNC_TRACE_PROTO_END
self._cg.add_lines(tmpl)
def _punctuate_proto(self):
self._cg.append_to_last_line(';')
def generate_header(self):
self._cg.reset()
dt = datetime.datetime.now().isoformat()
bh_filename = self.get_bitfield_header_filename()
prefix_def = ''
default_stream_def = ''
if self._cfg.options.gen_prefix_def:
prefix_def = '#define _BARECTF_PREFIX {}'.format(self._cfg.prefix)
if self._cfg.options.gen_default_stream_def and self._cfg.metadata.default_stream_name is not None:
default_stream_def = '#define _BARECTF_DEFAULT_STREAM {}'.format(self._cfg.metadata.default_stream_name)
default_stream_trace_defs = ''
default_stream_name = self._cfg.metadata.default_stream_name
if default_stream_name is not None:
default_stream = self._cfg.metadata.streams[default_stream_name]
lines = []
for ev_name in default_stream.events.keys():
tmpl = templates._DEFINE_DEFAULT_STREAM_TRACE
define = tmpl.format(prefix=self._cfg.prefix,
sname=default_stream_name,
evname=ev_name)
lines.append(define)
default_stream_trace_defs = '\n'.join(lines)
tmpl = templates._HEADER_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
ucprefix=self._cfg.prefix.upper(),
bitfield_header_filename=bh_filename,
version=barectf.__version__, date=dt,
prefix_def=prefix_def,
default_stream_def=default_stream_def,
default_stream_trace_defs=default_stream_trace_defs))
self._cg.add_empty_line()
# platform callbacks structure
self._generate_platform_callbacks()
self._cg.add_empty_line()
# context parent
self._generate_ctx_parent()
self._cg.add_empty_line()
# stream contexts
self._generate_ctxs()
self._cg.add_empty_line()
# initialization function prototype
self._generate_func_init_proto()
self._punctuate_proto()
self._cg.add_empty_line()
for stream in self._cfg.metadata.streams.values():
self._generate_func_open_proto(stream)
self._punctuate_proto()
self._cg.add_empty_line()
self._generate_func_close_proto(stream)
self._punctuate_proto()
self._cg.add_empty_line()
for ev in stream.events.values():
self._generate_func_trace_proto(stream, ev)
self._punctuate_proto()
self._cg.add_empty_line()
tmpl = templates._HEADER_END
self._cg.add_lines(tmpl.format(ucprefix=self._cfg.prefix.upper()))
return self._cg.code
def _get_call_event_param_list_from_struct(self, t, prefix, exclude_list):
lst = ''
for field_name in t.fields:
if field_name in exclude_list:
continue
lst += ', {}{}'.format(prefix, field_name)
return lst
def _get_call_event_param_list(self, stream, event):
lst = ''
gcp_func = self._get_call_event_param_list_from_struct
if stream.event_header_type is not None:
exclude_list = [
'id',
'timestamp',
]
lst += gcp_func(stream.event_header_type, _PREFIX_SEH, exclude_list)
if stream.event_context_type is not None:
lst += gcp_func(stream.event_context_type, _PREFIX_SEC, [])
if event.context_type is not None:
lst += gcp_func(event.context_type, _PREFIX_EC, [])
if event.payload_type is not None:
lst += gcp_func(event.payload_type, _PREFIX_EP, [])
return lst
def _generate_align(self, at, align):
self._cg.add_line('_ALIGN({}, {});'.format(at, align))
self._sasa.align(align)
def _generate_align_type(self, at, t):
if t.align == 1:
return
self._generate_align(at, t.align)
def _generate_incr_pos(self, var, value):
self._cg.add_line('{} += {};'.format(var, value))
def _generate_incr_pos_bytes(self, var, value):
self._generate_incr_pos(var, '_BYTES_TO_BITS({})'.format(value))
def _generate_func_get_event_size_proto(self, stream, event):
tmpl = templates._FUNC_GET_EVENT_SIZE_PROTO_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name, evname=event.name))
self._generate_func_trace_proto_params(stream, event)
tmpl = templates._FUNC_GET_EVENT_SIZE_PROTO_END
self._cg.add_lines(tmpl)
def _generate_func_get_event_size_from_entity(self, prefix, t):
self._cg.add_line('{')
self._cg.indent()
statically_aligned = self._pre_size_sasa.add_type(t)
if not statically_aligned:
# increment current position if needed
if self._last_basic_types_size > 0:
self._generate_incr_pos('at', self._last_basic_types_size)
self._last_basic_types_size = 0
self._cg.add_cc_line('align structure')
self._generate_align_type('at', t)
for field_name, field_type in t.fields.items():
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
if type(field_type) is metadata.String:
# increment current position if needed
if self._last_basic_types_size > 0:
self._generate_incr_pos('at', self._last_basic_types_size)
self._last_basic_types_size = 0
param = prefix + field_name
self._generate_incr_pos_bytes('at',
'strlen({}) + 1'.format(param))
self._pre_size_sasa.reset(8)
else:
statically_aligned = self._pre_size_sasa.add_type(field_type)
if not statically_aligned:
# increment current position if needed
if self._last_basic_types_size > 0:
self._generate_incr_pos('at', self._last_basic_types_size)
# realign dynamically
self._cg.add_cc_line('align for field')
self._generate_align_type('at', field_type)
fmt = 'field size: {} (partial total so far: {})'
self._cg.add_cc_line(fmt.format(field_type.size, self._pre_size_sasa.size))
self._last_basic_types_size = self._pre_size_sasa.size
self._cg.unindent()
self._cg.add_line('}')
self._cg.add_empty_line()
def _generate_func_get_event_size(self, stream, event):
self._reset_per_func_state()
self._generate_func_get_event_size_proto(stream, event)
tmpl = templates._FUNC_GET_EVENT_SIZE_BODY_BEGIN
lines = tmpl.format(prefix=self._cfg.prefix)
self._cg.add_lines(lines)
self._cg.add_empty_line()
self._cg.indent()
func = self._generate_func_get_event_size_from_entity
self._pre_size_sasa = _StaticAlignSizeAutomatonPreSize()
self._cg.add_cc_line('byte-align entity')
self._generate_align('at', 8)
self._cg.add_empty_line()
self._pre_size_sasa.reset(8)
self._last_basic_types_size = 0
if stream.event_header_type is not None:
self._cg.add_cc_line('stream event header')
func(_PREFIX_SEH, stream.event_header_type)
if stream.event_context_type is not None:
self._cg.add_cc_line('stream event context')
func(_PREFIX_SEC, stream.event_context_type)
if event.context_type is not None:
self._cg.add_cc_line('event context')
func(_PREFIX_EC, event.context_type)
if event.payload_type is not None:
self._cg.add_cc_line('event payload')
func(_PREFIX_EP, event.payload_type)
# increment current position if needed
if self._last_basic_types_size > 0:
self._generate_incr_pos('at', self._last_basic_types_size)
self._cg.add_empty_line()
self._cg.unindent()
tmpl = templates._FUNC_GET_EVENT_SIZE_BODY_END
self._cg.add_lines(tmpl)
def _generate_func_serialize_event_proto(self, stream, event):
tmpl = templates._FUNC_SERIALIZE_EVENT_PROTO_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name, evname=event.name))
self._generate_func_trace_proto_params(stream, event)
tmpl = templates._FUNC_SERIALIZE_EVENT_PROTO_END
self._cg.add_lines(tmpl)
def _generate_bitfield_write(self, ctype, var, ctx, t):
ptr = '&{ctx}->buf[_BITS_TO_BYTES({ctx}->at)]'.format(ctx=ctx)
start = self._sasa.byte_offset
suffix = 'le' if t.byte_order is metadata.ByteOrder.LE else 'be'
func = '{}bt_bitfield_write_{}'.format(self._cfg.prefix, suffix)
call_fmt = '{func}({ptr}, uint8_t, {start}, {size}, {ctype}, ({ctype}) {var});'
call = call_fmt.format(func=func, ptr=ptr, start=start, size=t.size,
ctype=ctype, var=var)
self._cg.add_line(call)
def _generate_serialize_int(self, var, ctx, t):
ctype = self._get_int_ctype(t)
self._generate_bitfield_write(ctype, var, ctx, t)
self._generate_incr_pos('{}->at'.format(ctx), t.size)
def _generate_serialize_float(self, var, ctx, t):
ctype = self._get_type_ctype(t)
flt_dbl = False
if ctype == 'float' or ctype == 'double':
flt_dbl = True
if ctype == 'float':
union_name = 'f2u'
int_ctype = 'uint32_t'
elif ctype == 'double':
union_name = 'd2u'
int_ctype = 'uint64_t'
# union for reading the bytes of the floating point number
self._cg.add_empty_line()
self._cg.add_line('{')
self._cg.indent()
self._cg.add_line('union {name} {name};'.format(name=union_name))
self._cg.add_empty_line()
self._cg.add_line('{}.f = {};'.format(union_name, var))
bf_var = '{}.u'.format(union_name)
else:
bf_var = '({}) {}'.format(ctype, var)
int_ctype = ctype
self._generate_bitfield_write(int_ctype, bf_var, ctx, t)
if flt_dbl:
self._cg.unindent()
self._cg.add_line('}')
self._cg.add_empty_line()
self._generate_incr_pos('{}->at'.format(ctx), t.size)
def _generate_serialize_enum(self, var, ctx, t):
self._generate_serialize_type(var, ctx, t.value_type)
def _generate_serialize_string(self, var, ctx, t):
tmpl = '_write_cstring({}, {});'.format(ctx, var)
self._cg.add_lines(tmpl)
def _generate_serialize_type(self, var, ctx, t):
self._type_to_generate_serialize_func[type(t)](var, ctx, t)
self._sasa.write_type(t)
def _generate_func_serialize_event_from_entity(self, prefix, t,
spec_src=None):
self._cg.add_line('{')
self._cg.indent()
self._cg.add_cc_line('align structure')
self._sasa.reset()
self._generate_align_type('ctx->at', t)
for field_name, field_type in t.fields.items():
src = prefix + field_name
if spec_src is not None:
if field_name in spec_src:
src = spec_src[field_name]
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
self._generate_align_type('ctx->at', field_type)
self._generate_serialize_type(src, 'ctx', field_type)
self._cg.unindent()
self._cg.add_line('}')
self._cg.add_empty_line()
def _generate_func_serialize_event(self, stream, event):
self._reset_per_func_state()
self._generate_func_serialize_event_proto(stream, event)
tmpl = templates._FUNC_SERIALIZE_EVENT_BODY_BEGIN
lines = tmpl.format(prefix=self._cfg.prefix)
self._cg.add_lines(lines)
self._cg.indent()
if stream.event_header_type is not None:
t = stream.event_header_type
exclude_list = ['timestamp', 'id']
params = self._get_call_event_param_list_from_struct(t, _PREFIX_SEH,
exclude_list)
tmpl = '_serialize_stream_event_header_{sname}(ctx, {evid}{params});'
self._cg.add_cc_line('stream event header')
self._cg.add_line(tmpl.format(sname=stream.name, evid=event.id,
params=params))
self._cg.add_empty_line()
if stream.event_context_type is not None:
t = stream.event_context_type
params = self._get_call_event_param_list_from_struct(t, _PREFIX_SEC,
[])
tmpl = '_serialize_stream_event_context_{sname}(ctx{params});'
self._cg.add_cc_line('stream event context')
self._cg.add_line(tmpl.format(sname=stream.name, params=params))
self._cg.add_empty_line()
if event.context_type is not None:
self._cg.add_cc_line('event context')
self._generate_func_serialize_event_from_entity(_PREFIX_EC,
event.context_type)
if event.payload_type is not None:
self._cg.add_cc_line('event payload')
self._generate_func_serialize_event_from_entity(_PREFIX_EP,
event.payload_type)
self._cg.unindent()
tmpl = templates._FUNC_SERIALIZE_EVENT_BODY_END
self._cg.add_lines(tmpl)
def _generate_func_serialize_stream_event_header_proto(self, stream):
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_HEADER_PROTO_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name))
if stream.event_header_type is not None:
exclude_list = [
'id',
'timestamp',
]
self._generate_proto_params(stream.event_header_type,
_PREFIX_SEH, exclude_list)
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_HEADER_PROTO_END
self._cg.add_lines(tmpl)
def _generate_func_serialize_stream_event_context_proto(self, stream):
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_CONTEXT_PROTO_BEGIN
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix,
sname=stream.name))
if stream.event_context_type is not None:
self._generate_proto_params(stream.event_context_type,
_PREFIX_SEC, [])
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_CONTEXT_PROTO_END
self._cg.add_lines(tmpl)
def _generate_func_serialize_stream_event_header(self, stream):
self._reset_per_func_state()
self._generate_func_serialize_stream_event_header_proto(stream)
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_HEADER_BODY_BEGIN
lines = tmpl.format(prefix=self._cfg.prefix)
self._cg.add_lines(lines)
self._cg.indent()
if stream.event_header_type is not None:
if 'timestamp' in stream.event_header_type.fields:
timestamp = stream.event_header_type.fields['timestamp']
ts_ctype = self._get_int_ctype(timestamp)
clock = timestamp.property_mappings[0].object
clock_name = clock.name
clock_ctype = clock.return_ctype
tmpl = '{} ts = ctx->cbs.{}_clock_get_value(ctx->data);'
self._cg.add_line(tmpl.format(clock_ctype, clock_name))
self._cg.add_empty_line()
func = self._generate_func_serialize_event_from_entity
if stream.event_header_type is not None:
spec_src = {}
if 'id' in stream.event_header_type.fields:
id_t = stream.event_header_type.fields['id']
id_t_ctype = self._get_int_ctype(id_t)
spec_src['id'] = '({}) event_id'.format(id_t_ctype)
if 'timestamp' in stream.event_header_type.fields:
spec_src['timestamp'] = '({}) ts'.format(ts_ctype)
func(_PREFIX_SEH, stream.event_header_type, spec_src)
self._cg.unindent()
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_HEADER_BODY_END
self._cg.add_lines(tmpl)
def _generate_func_serialize_stream_event_context(self, stream):
self._reset_per_func_state()
self._generate_func_serialize_stream_event_context_proto(stream)
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_CONTEXT_BODY_BEGIN
lines = tmpl.format(prefix=self._cfg.prefix)
self._cg.add_lines(lines)
self._cg.indent()
func = self._generate_func_serialize_event_from_entity
if stream.event_context_type is not None:
func(_PREFIX_SEC, stream.event_context_type)
self._cg.unindent()
tmpl = templates._FUNC_SERIALIZE_STREAM_EVENT_CONTEXT_BODY_END
self._cg.add_lines(tmpl)
def _generate_func_trace(self, stream, event):
self._reset_per_func_state()
self._generate_func_trace_proto(stream, event)
params = self._get_call_event_param_list(stream, event)
tmpl = templates._FUNC_TRACE_BODY
self._cg.add_lines(tmpl.format(sname=stream.name, evname=event.name,
params=params))
def _generate_func_init(self):
self._reset_per_func_state()
self._generate_func_init_proto()
tmpl = templates._FUNC_INIT_BODY
self._cg.add_lines(tmpl.format(prefix=self._cfg.prefix))
def _generate_field_name_cc_line(self, field_name):
self._cg.add_cc_line('"{}" field'.format(field_name))
def _save_byte_offset(self, name):
self._saved_byte_offsets[name] = self._sasa.byte_offset
def _restore_byte_offset(self, name):
self._sasa.byte_offset = self._saved_byte_offsets[name]
def _reset_per_func_state(self):
pass
def _generate_func_open(self, stream):
def generate_save_offset(name):
tmpl = 'ctx->off_spc_{} = ctx->parent.at;'.format(name)
self._cg.add_line(tmpl)
self._save_byte_offset(name)
self._reset_per_func_state()
self._generate_func_open_proto(stream)
tmpl = templates._FUNC_OPEN_BODY_BEGIN
self._cg.add_lines(tmpl)
self._cg.indent()
tph_type = self._cfg.metadata.trace.packet_header_type
spc_type = stream.packet_context_type
if spc_type is not None and 'timestamp_begin' in spc_type.fields:
field = spc_type.fields['timestamp_begin']
tmpl = '{} ts = ctx->parent.cbs.{}_clock_get_value(ctx->parent.data);'
clock = field.property_mappings[0].object
clock_ctype = clock.return_ctype
clock_name = clock.name
self._cg.add_line(tmpl.format(clock_ctype, clock_name))
self._cg.add_empty_line()
self._cg.add_cc_line('do not open a packet that is already open')
self._cg.add_line('if (ctx->parent.packet_is_open) {')
self._cg.indent()
self._cg.add_line('return;')
self._cg.unindent()
self._cg.add_line('}')
self._cg.add_empty_line()
self._cg.add_line('ctx->parent.at = 0;')
if tph_type is not None:
self._cg.add_empty_line()
self._cg.add_cc_line('trace packet header')
self._cg.add_line('{')
self._cg.indent()
self._cg.add_cc_line('align structure')
self._sasa.reset()
self._generate_align_type('ctx->parent.at', tph_type)
for field_name, field_type in tph_type.fields.items():
src = _PREFIX_TPH + field_name
if field_name == 'magic':
src = '0xc1fc1fc1UL'
elif field_name == 'stream_id':
stream_id_ctype = self._get_int_ctype(field_type)
src = '({}) {}'.format(stream_id_ctype, stream.id)
elif field_name == 'uuid':
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
self._cg.add_line('{')
self._cg.indent()
self._cg.add_line('static uint8_t uuid[] = {')
self._cg.indent()
for b in self._cfg.metadata.trace.uuid.bytes:
self._cg.add_line('{},'.format(b))
self._cg.unindent()
self._cg.add_line('};')
self._cg.add_empty_line()
self._generate_align('ctx->parent.at', 8)
line = 'memcpy(&ctx->parent.buf[_BITS_TO_BYTES(ctx->parent.at)], uuid, 16);'
self._cg.add_line(line)
self._generate_incr_pos_bytes('ctx->parent.at', 16)
self._cg.unindent()
self._cg.add_line('}')
self._sasa.reset()
continue
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
self._generate_align_type('ctx->parent.at', field_type)
self._generate_serialize_type(src, '(&ctx->parent)', field_type)
self._cg.unindent()
self._cg.add_lines('}')
if spc_type is not None:
self._cg.add_empty_line()
self._cg.add_cc_line('stream packet context')
self._cg.add_line('{')
self._cg.indent()
self._cg.add_cc_line('align structure')
self._sasa.reset()
self._generate_align_type('ctx->parent.at', spc_type)
tmpl_off = 'off_spc_{fname}'
for field_name, field_type in spc_type.fields.items():
src = _PREFIX_SPC + field_name
skip_int = False
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
if field_name == 'timestamp_begin':
ctype = self._get_type_ctype(field_type)
src = '({}) ts'.format(ctype)
elif field_name in ['timestamp_end', 'content_size',
'events_discarded']:
skip_int = True
elif field_name == 'packet_size':
ctype = self._get_type_ctype(field_type)
src = '({}) ctx->parent.packet_size'.format(ctype)
self._generate_align_type('ctx->parent.at', field_type)
if skip_int:
generate_save_offset(field_name)
self._generate_incr_pos('ctx->parent.at', field_type.size)
self._sasa.write_type(field_type)
else:
self._generate_serialize_type(src, '(&ctx->parent)',
field_type)
self._cg.unindent()
self._cg.add_lines('}')
self._cg.unindent()
tmpl = templates._FUNC_OPEN_BODY_END
self._cg.add_lines(tmpl)
def _generate_func_close(self, stream):
def generate_goto_offset(name):
tmpl = 'ctx->parent.at = ctx->off_spc_{};'.format(name)
self._cg.add_line(tmpl)
self._reset_per_func_state()
self._generate_func_close_proto(stream)
tmpl = templates._FUNC_CLOSE_BODY_BEGIN
self._cg.add_lines(tmpl)
self._cg.indent()
spc_type = stream.packet_context_type
if spc_type is not None:
if 'timestamp_end' in spc_type.fields:
tmpl = '{} ts = ctx->parent.cbs.{}_clock_get_value(ctx->parent.data);'
field = spc_type.fields['timestamp_end']
clock = field.property_mappings[0].object
clock_ctype = clock.return_ctype
clock_name = clock.name
self._cg.add_line(tmpl.format(clock_ctype, clock_name))
self._cg.add_empty_line()
self._cg.add_cc_line('do not close a packet that is not open')
self._cg.add_line('if (!ctx->parent.packet_is_open) {')
self._cg.indent()
self._cg.add_line('return;')
self._cg.unindent()
self._cg.add_line('}')
self._cg.add_empty_line()
self._cg.add_cc_line('save content size')
self._cg.add_line('ctx->parent.content_size = ctx->parent.at;')
if spc_type is not None:
field_name = 'timestamp_end'
if field_name in spc_type.fields:
t = spc_type.fields[field_name]
ctype = self._get_type_ctype(t)
src = '({}) ts'.format(ctype)
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
generate_goto_offset(field_name)
self._restore_byte_offset(field_name)
self._generate_serialize_type(src, '(&ctx->parent)', t)
field_name = 'content_size'
if 'content_size' in spc_type.fields:
t = spc_type.fields[field_name]
ctype = self._get_type_ctype(t)
src = '({}) ctx->parent.content_size'.format(ctype)
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
generate_goto_offset(field_name)
self._restore_byte_offset(field_name)
self._generate_serialize_type(src, '(&ctx->parent)', t)
field_name = 'events_discarded'
if field_name in spc_type.fields:
t = spc_type.fields[field_name]
ctype = self._get_type_ctype(t)
src = '({}) ctx->parent.events_discarded'.format(ctype)
self._cg.add_empty_line()
self._generate_field_name_cc_line(field_name)
generate_goto_offset(field_name)
self._restore_byte_offset(field_name)
self._generate_serialize_type(src, '(&ctx->parent)', t)
self._cg.unindent()
tmpl = templates._FUNC_CLOSE_BODY_END
self._cg.add_lines(tmpl)
self._sasa.reset()
def generate_c_src(self):