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>
47 # error "Unsupported floating point radix"
56 * The aligned read/write functions are expected to be faster than the
57 * bitfield variants. They will be enabled eventually as an
61 int aligned_integer_write(struct bt_ctf_stream_pos
*pos
,
62 union intval value
, unsigned int alignment
, unsigned int size
,
63 bool is_signed
, enum bt_ctf_byte_order byte_order
)
65 bool rbo
= (byte_order
!= BT_CTF_MY_BYTE_ORDER
); /* reverse byte order */
67 if (!bt_ctf_stream_pos_align(pos
, alignment
))
70 if (!bt_ctf_stream_pos_access_ok(pos
, size
))
73 assert(!(pos
->offset
% CHAR_BIT
));
78 uint8_t v
= value
.unsignd
;
80 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
85 uint16_t v
= value
.unsignd
;
88 v
= GUINT16_SWAP_LE_BE(v
);
89 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
94 uint32_t v
= value
.unsignd
;
97 v
= GUINT32_SWAP_LE_BE(v
);
98 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
103 uint64_t v
= value
.unsignd
;
106 v
= GUINT64_SWAP_LE_BE(v
);
107 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
117 uint8_t v
= value
.signd
;
119 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
124 int16_t v
= value
.signd
;
127 v
= GUINT16_SWAP_LE_BE(v
);
128 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
133 int32_t v
= value
.signd
;
136 v
= GUINT32_SWAP_LE_BE(v
);
137 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
142 int64_t v
= value
.signd
;
145 v
= GUINT64_SWAP_LE_BE(v
);
146 memcpy(bt_ctf_stream_pos_get_addr(pos
), &v
, sizeof(v
));
154 if (!bt_ctf_stream_pos_move(pos
, size
))
160 int integer_write(struct bt_ctf_stream_pos
*pos
, union intval value
,
161 unsigned int alignment
, unsigned int size
, bool is_signed
,
162 enum bt_ctf_byte_order byte_order
)
164 if (!(alignment
% CHAR_BIT
)
165 && !(size
% CHAR_BIT
)) {
166 return aligned_integer_write(pos
, value
, alignment
,
167 size
, is_signed
, byte_order
);
170 if (!bt_ctf_stream_pos_align(pos
, alignment
))
173 if (!bt_ctf_stream_pos_access_ok(pos
, size
))
177 if (byte_order
== BT_CTF_BYTE_ORDER_LITTLE_ENDIAN
)
178 bt_bitfield_write_le(mmap_align_addr(pos
->base_mma
) +
179 pos
->mmap_base_offset
, unsigned char,
180 pos
->offset
, size
, value
.unsignd
);
182 bt_bitfield_write_be(mmap_align_addr(pos
->base_mma
) +
183 pos
->mmap_base_offset
, unsigned char,
184 pos
->offset
, size
, value
.unsignd
);
186 if (byte_order
== BT_CTF_BYTE_ORDER_LITTLE_ENDIAN
)
187 bt_bitfield_write_le(mmap_align_addr(pos
->base_mma
) +
188 pos
->mmap_base_offset
, unsigned char,
189 pos
->offset
, size
, value
.signd
);
191 bt_bitfield_write_be(mmap_align_addr(pos
->base_mma
) +
192 pos
->mmap_base_offset
, unsigned char,
193 pos
->offset
, size
, value
.signd
);
196 if (!bt_ctf_stream_pos_move(pos
, size
))
202 int bt_ctf_field_integer_write(struct bt_ctf_field_integer
*int_field
,
203 struct bt_ctf_stream_pos
*pos
,
204 enum bt_ctf_byte_order native_byte_order
)
206 struct bt_ctf_field_type
*type
= int_field
->parent
.type
;
207 struct bt_ctf_field_type_integer
*int_type
= (void *) type
;
208 enum bt_ctf_byte_order byte_order
;
211 byte_order
= int_type
->user_byte_order
;
212 if (byte_order
== BT_CTF_BYTE_ORDER_NATIVE
) {
213 byte_order
= native_byte_order
;
216 value
.signd
= int_field
->payload
.signd
;
217 value
.unsignd
= int_field
->payload
.unsignd
;
218 return integer_write(pos
, value
, type
->alignment
,
219 int_type
->size
, int_type
->is_signed
,
224 int bt_ctf_field_floating_point_write(
225 struct bt_ctf_field_floating_point
*flt_field
,
226 struct bt_ctf_stream_pos
*pos
,
227 enum bt_ctf_byte_order native_byte_order
)
229 struct bt_ctf_field_type
*type
= flt_field
->parent
.type
;
230 struct bt_ctf_field_type_floating_point
*flt_type
= (void *) type
;
231 enum bt_ctf_byte_order byte_order
;
235 byte_order
= flt_type
->user_byte_order
;
236 if (byte_order
== BT_CTF_BYTE_ORDER_NATIVE
) {
237 byte_order
= native_byte_order
;
240 if (flt_type
->mant_dig
== FLT_MANT_DIG
) {
246 u32f
.f
= (float) flt_field
->payload
;
247 value
.unsignd
= u32f
.u
;
249 } else if (flt_type
->mant_dig
== DBL_MANT_DIG
) {
255 u64d
.d
= flt_field
->payload
;
256 value
.unsignd
= u64d
.u
;
262 return integer_write(pos
, value
, type
->alignment
, size
, false,
267 void bt_ctf_stream_pos_packet_seek(struct bt_ctf_stream_pos
*pos
, size_t index
,
272 assert(whence
== SEEK_CUR
&& index
== 0);
276 ret
= munmap_align(pos
->base_mma
);
280 pos
->base_mma
= NULL
;
283 /* The writer will add padding */
284 pos
->mmap_offset
+= pos
->packet_size
/ CHAR_BIT
;
285 pos
->content_size
= -1U; /* Unknown at this point */
286 pos
->packet_size
= getpagesize() * 8 * CHAR_BIT
;
288 ret
= bt_posix_fallocate(pos
->fd
, pos
->mmap_offset
,
289 pos
->packet_size
/ CHAR_BIT
);
290 } while (ret
== EINTR
);
294 /* map new base. Need mapping length from header. */
295 pos
->base_mma
= mmap_align(pos
->packet_size
/ CHAR_BIT
, pos
->prot
,
296 pos
->flags
, pos
->fd
, pos
->mmap_offset
);
297 if (pos
->base_mma
== MAP_FAILED
) {