4 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
5 * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
6 * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
8 * The original author of the serialization functions for Babeltrace 1
9 * is Mathieu Desnoyers. Philippe Proulx modified the functions in 2017
10 * to use Babeltrace 2 objects.
12 * Permission is hereby granted, free of charge, to any person obtaining a copy
13 * of this software and associated documentation files (the "Software"), to deal
14 * in the Software without restriction, including without limitation the rights
15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
16 * copies of the Software, and to permit persons to whom the Software is
17 * furnished to do so, subject to the following conditions:
19 * The above copyright notice and this permission notice shall be included in
20 * all copies or substantial portions of the Software.
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
25 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <babeltrace/ctf-ir/field-types.h>
35 #include <babeltrace/ctf-ir/field-types-internal.h>
36 #include <babeltrace/ctf-ir/fields.h>
37 #include <babeltrace/ctf-ir/fields-internal.h>
38 #include <babeltrace/ctf-writer/serialize-internal.h>
39 #include <babeltrace/align-internal.h>
40 #include <babeltrace/mmap-align-internal.h>
41 #include <babeltrace/endian-internal.h>
42 #include <babeltrace/bitfield-internal.h>
43 #include <babeltrace/compat/fcntl-internal.h>
44 #include <babeltrace/types.h>
48 # error "Unsupported floating point radix"
57 * The aligned read/write functions are expected to be faster than the
58 * bitfield variants. They will be enabled eventually as an
62 int aligned_integer_write(struct bt_ctf_stream_pos
*pos
,
63 union intval value
, unsigned int alignment
, unsigned int size
,
64 bt_bool is_signed
, enum bt_ctf_byte_order byte_order
)
66 bt_bool rbo
= (byte_order
!= BT_CTF_MY_BYTE_ORDER
); /* reverse byte order */
68 if (!bt_ctf_stream_pos_align(pos
, alignment
))
71 if (!bt_ctf_stream_pos_access_ok(pos
, size
))
74 assert(!(pos
->offset
% CHAR_BIT
));
79 uint8_t v
= value
.unsignd
;
81 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
86 uint16_t v
= value
.unsignd
;
89 v
= GUINT16_SWAP_LE_BE(v
);
90 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
95 uint32_t v
= value
.unsignd
;
98 v
= GUINT32_SWAP_LE_BE(v
);
99 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
104 uint64_t v
= value
.unsignd
;
107 v
= GUINT64_SWAP_LE_BE(v
);
108 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
118 uint8_t v
= value
.signd
;
120 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
125 int16_t v
= value
.signd
;
128 v
= GUINT16_SWAP_LE_BE(v
);
129 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
134 int32_t v
= value
.signd
;
137 v
= GUINT32_SWAP_LE_BE(v
);
138 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
143 int64_t v
= value
.signd
;
146 v
= GUINT64_SWAP_LE_BE(v
);
147 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
155 if (!bt_ctf_stream_pos_move(pos
, size
))
161 int integer_write(struct bt_ctf_stream_pos
*pos
, union intval value
,
162 unsigned int alignment
, unsigned int size
, bt_bool is_signed
,
163 enum bt_ctf_byte_order byte_order
)
165 if (!(alignment
% CHAR_BIT
)
166 && !(size
% CHAR_BIT
)) {
167 return aligned_integer_write(pos
, value
, alignment
,
168 size
, is_signed
, byte_order
);
171 if (!bt_ctf_stream_pos_align(pos
, alignment
))
174 if (!bt_ctf_stream_pos_access_ok(pos
, size
))
178 if (byte_order
== BT_CTF_BYTE_ORDER_LITTLE_ENDIAN
)
179 bt_bitfield_write_le(mmap_align_addr(pos
->base_mma
) +
180 pos
->mmap_base_offset
, unsigned char,
181 pos
->offset
, size
, value
.unsignd
);
183 bt_bitfield_write_be(mmap_align_addr(pos
->base_mma
) +
184 pos
->mmap_base_offset
, unsigned char,
185 pos
->offset
, size
, value
.unsignd
);
187 if (byte_order
== BT_CTF_BYTE_ORDER_LITTLE_ENDIAN
)
188 bt_bitfield_write_le(mmap_align_addr(pos
->base_mma
) +
189 pos
->mmap_base_offset
, unsigned char,
190 pos
->offset
, size
, value
.signd
);
192 bt_bitfield_write_be(mmap_align_addr(pos
->base_mma
) +
193 pos
->mmap_base_offset
, unsigned char,
194 pos
->offset
, size
, value
.signd
);
197 if (!bt_ctf_stream_pos_move(pos
, size
))
203 int bt_ctf_field_integer_write(struct bt_ctf_field_integer
*int_field
,
204 struct bt_ctf_stream_pos
*pos
,
205 enum bt_ctf_byte_order native_byte_order
)
207 struct bt_ctf_field_type
*type
= int_field
->parent
.type
;
208 struct bt_ctf_field_type_integer
*int_type
= (void *) type
;
209 enum bt_ctf_byte_order byte_order
;
212 byte_order
= int_type
->user_byte_order
;
213 if (byte_order
== BT_CTF_BYTE_ORDER_NATIVE
) {
214 byte_order
= native_byte_order
;
217 value
.signd
= int_field
->payload
.signd
;
218 value
.unsignd
= int_field
->payload
.unsignd
;
219 return integer_write(pos
, value
, type
->alignment
,
220 int_type
->size
, int_type
->is_signed
,
225 int bt_ctf_field_floating_point_write(
226 struct bt_ctf_field_floating_point
*flt_field
,
227 struct bt_ctf_stream_pos
*pos
,
228 enum bt_ctf_byte_order native_byte_order
)
230 struct bt_ctf_field_type
*type
= flt_field
->parent
.type
;
231 struct bt_ctf_field_type_floating_point
*flt_type
= (void *) type
;
232 enum bt_ctf_byte_order byte_order
;
236 byte_order
= flt_type
->user_byte_order
;
237 if (byte_order
== BT_CTF_BYTE_ORDER_NATIVE
) {
238 byte_order
= native_byte_order
;
241 if (flt_type
->mant_dig
== FLT_MANT_DIG
) {
247 u32f
.f
= (float) flt_field
->payload
;
248 value
.unsignd
= u32f
.u
;
250 } else if (flt_type
->mant_dig
== DBL_MANT_DIG
) {
256 u64d
.d
= flt_field
->payload
;
257 value
.unsignd
= u64d
.u
;
263 return integer_write(pos
, value
, type
->alignment
, size
, BT_FALSE
,
268 void bt_ctf_stream_pos_packet_seek(struct bt_ctf_stream_pos
*pos
, size_t index
,
273 assert(whence
== SEEK_CUR
&& index
== 0);
277 ret
= munmap_align(pos
->base_mma
);
279 // FIXME: this can legitimately fail?
282 pos
->base_mma
= NULL
;
285 /* The writer will add padding */
286 pos
->mmap_offset
+= pos
->packet_size
/ CHAR_BIT
;
287 pos
->packet_size
= getpagesize() * 8 * CHAR_BIT
;
289 ret
= bt_posix_fallocate(pos
->fd
, pos
->mmap_offset
,
290 pos
->packet_size
/ CHAR_BIT
);
291 } while (ret
== EINTR
);
295 /* map new base. Need mapping length from header. */
296 pos
->base_mma
= mmap_align(pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
297 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
298 if (pos
->base_mma
== MAP_FAILED
) {
299 // FIXME: this can legitimately fail?