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d79865b9 MD |
1 | #ifndef _BABELTRACE_CTF_TYPES_H |
2 | #define _BABELTRACE_CTF_TYPES_H | |
6dc2ca62 MD |
3 | |
4 | /* | |
5 | * Common Trace Format | |
6 | * | |
7 | * Type header | |
8 | * | |
ccd7e1c8 | 9 | * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
6dc2ca62 | 10 | * |
ccd7e1c8 MD |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
de0ba614 | 17 | * |
ccd7e1c8 MD |
18 | * The above copyright notice and this permission notice shall be included in |
19 | * all copies or substantial portions of the Software. | |
c462e188 MD |
20 | * |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
6dc2ca62 MD |
28 | */ |
29 | ||
4c8bfb7e | 30 | #include <babeltrace/types.h> |
70bd0a12 | 31 | #include <babeltrace/babeltrace-internal.h> |
8563e754 MD |
32 | #include <sys/types.h> |
33 | #include <sys/stat.h> | |
34 | #include <fcntl.h> | |
8c572eba | 35 | #include <errno.h> |
6dc2ca62 | 36 | #include <stdint.h> |
0f980a35 | 37 | #include <unistd.h> |
6dc2ca62 | 38 | #include <glib.h> |
c5e74408 | 39 | #include <stdio.h> |
fef3bf22 | 40 | #include <inttypes.h> |
aee35fcc | 41 | #include <babeltrace/mmap-align.h> |
847bf71a | 42 | |
fef3bf22 | 43 | #define LAST_OFFSET_POISON ((int64_t) ~0ULL) |
3a25e036 | 44 | |
c34ccddd MD |
45 | struct bt_stream_callbacks; |
46 | ||
0f980a35 MD |
47 | struct packet_index { |
48 | off_t offset; /* offset of the packet in the file, in bytes */ | |
fef3bf22 | 49 | int64_t data_offset; /* offset of data within the packet, in bits */ |
7e18eedf JN |
50 | uint64_t packet_size; /* packet size, in bits */ |
51 | uint64_t content_size; /* content size, in bits */ | |
75cc2c35 MD |
52 | uint64_t timestamp_begin; |
53 | uint64_t timestamp_end; | |
4c4ba021 | 54 | uint64_t events_discarded; |
fef3bf22 | 55 | uint64_t events_discarded_len; /* length of the field, in bits */ |
dd2544fd MD |
56 | }; |
57 | ||
dd2544fd | 58 | /* |
46322b33 | 59 | * Always update ctf_stream_pos with ctf_move_pos and ctf_init_pos. |
dd2544fd | 60 | */ |
46322b33 | 61 | struct ctf_stream_pos { |
1cf393f6 | 62 | struct bt_stream_pos parent; |
0f980a35 | 63 | int fd; /* backing file fd. -1 if unset. */ |
03798a93 JD |
64 | GArray *packet_cycles_index; /* contains struct packet_index in cycles */ |
65 | GArray *packet_real_index; /* contains struct packet_index in ns */ | |
8c572eba MD |
66 | int prot; /* mmap protection */ |
67 | int flags; /* mmap flags */ | |
dd2544fd | 68 | |
0f980a35 MD |
69 | /* Current position */ |
70 | off_t mmap_offset; /* mmap offset in the file, in bytes */ | |
47415068 | 71 | off_t mmap_base_offset; /* offset of start of packet in mmap, in bytes */ |
fef3bf22 MD |
72 | uint64_t packet_size; /* current packet size, in bits */ |
73 | uint64_t content_size; /* current content size, in bits */ | |
74 | uint64_t *content_size_loc; /* pointer to current content size */ | |
aee35fcc | 75 | struct mmap_align *base_mma;/* mmap base address */ |
fef3bf22 MD |
76 | int64_t offset; /* offset from base, in bits. EOF for end of file. */ |
77 | int64_t last_offset; /* offset before the last read_event */ | |
78 | uint64_t cur_index; /* current index in packet index */ | |
f60efc0e | 79 | uint64_t last_events_discarded; /* last known amount of event discarded */ |
1cf393f6 | 80 | void (*packet_seek)(struct bt_stream_pos *pos, size_t index, |
b086c01a | 81 | int whence); /* function called to switch packet */ |
dd2544fd | 82 | |
0f980a35 | 83 | int dummy; /* dummy position, for length calculation */ |
c34ccddd | 84 | struct bt_stream_callbacks *cb; /* Callbacks registered for iterator. */ |
0f980a35 | 85 | }; |
dd2544fd | 86 | |
46322b33 | 87 | static inline |
1cf393f6 | 88 | struct ctf_stream_pos *ctf_pos(struct bt_stream_pos *pos) |
46322b33 MD |
89 | { |
90 | return container_of(pos, struct ctf_stream_pos, parent); | |
91 | } | |
92 | ||
2e937fb4 | 93 | BT_HIDDEN |
1cf393f6 | 94 | int ctf_integer_read(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 95 | BT_HIDDEN |
1cf393f6 | 96 | int ctf_integer_write(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 97 | BT_HIDDEN |
1cf393f6 | 98 | int ctf_float_read(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 99 | BT_HIDDEN |
1cf393f6 | 100 | int ctf_float_write(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 101 | BT_HIDDEN |
1cf393f6 | 102 | int ctf_string_read(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 103 | BT_HIDDEN |
1cf393f6 | 104 | int ctf_string_write(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 105 | BT_HIDDEN |
1cf393f6 | 106 | int ctf_enum_read(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 107 | BT_HIDDEN |
1cf393f6 | 108 | int ctf_enum_write(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 109 | BT_HIDDEN |
1cf393f6 | 110 | int ctf_struct_rw(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 111 | BT_HIDDEN |
1cf393f6 | 112 | int ctf_variant_rw(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 113 | BT_HIDDEN |
1cf393f6 | 114 | int ctf_array_read(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 115 | BT_HIDDEN |
1cf393f6 | 116 | int ctf_array_write(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 117 | BT_HIDDEN |
1cf393f6 | 118 | int ctf_sequence_read(struct bt_stream_pos *pos, struct definition *definition); |
2e937fb4 | 119 | BT_HIDDEN |
1cf393f6 | 120 | int ctf_sequence_write(struct bt_stream_pos *pos, struct definition *definition); |
6dc2ca62 | 121 | |
1cf393f6 | 122 | void ctf_packet_seek(struct bt_stream_pos *pos, size_t index, int whence); |
0f980a35 | 123 | |
f824ae04 MD |
124 | int ctf_init_pos(struct ctf_stream_pos *pos, int fd, int open_flags); |
125 | int ctf_fini_pos(struct ctf_stream_pos *pos); | |
0f980a35 MD |
126 | |
127 | /* | |
128 | * move_pos - move position of a relative bit offset | |
129 | * | |
130 | * TODO: allow larger files by updating base too. | |
131 | */ | |
132 | static inline | |
fef3bf22 | 133 | void ctf_move_pos(struct ctf_stream_pos *pos, uint64_t bit_offset) |
0f980a35 | 134 | { |
fef3bf22 | 135 | printf_debug("ctf_move_pos test EOF: %" PRId64 "\n", pos->offset); |
90bf3cef | 136 | if (unlikely(pos->offset == EOF)) |
c5e74408 MD |
137 | return; |
138 | ||
8c572eba | 139 | if (pos->fd >= 0) { |
5f643ed7 | 140 | /* |
06789ffd | 141 | * PROT_READ ctf_packet_seek is called from within |
5f643ed7 MD |
142 | * ctf_pos_get_event so end of packet does not change |
143 | * the packet context on for the last event of the | |
144 | * packet. | |
145 | */ | |
146 | if ((pos->prot == PROT_WRITE) | |
90bf3cef | 147 | && (unlikely(pos->offset + bit_offset >= pos->packet_size))) { |
fef3bf22 | 148 | printf_debug("ctf_packet_seek (before call): %" PRId64 "\n", |
670977d3 | 149 | pos->offset); |
20d0dcf9 | 150 | ctf_packet_seek(&pos->parent, 0, SEEK_CUR); |
fef3bf22 | 151 | printf_debug("ctf_packet_seek (after call): %" PRId64 "\n", |
670977d3 | 152 | pos->offset); |
8c572eba MD |
153 | return; |
154 | } | |
155 | } | |
156 | pos->offset += bit_offset; | |
fef3bf22 | 157 | printf_debug("ctf_move_pos after increment: %" PRId64 "\n", pos->offset); |
0f980a35 MD |
158 | } |
159 | ||
160 | /* | |
161 | * align_pos - align position on a bit offset (> 0) | |
162 | * | |
163 | * TODO: allow larger files by updating base too. | |
164 | */ | |
165 | static inline | |
fef3bf22 | 166 | void ctf_align_pos(struct ctf_stream_pos *pos, uint64_t bit_offset) |
0f980a35 | 167 | { |
46322b33 | 168 | ctf_move_pos(pos, offset_align(pos->offset, bit_offset)); |
0f980a35 MD |
169 | } |
170 | ||
171 | static inline | |
46322b33 | 172 | char *ctf_get_pos_addr(struct ctf_stream_pos *pos) |
0f980a35 MD |
173 | { |
174 | /* Only makes sense to get the address after aligning on CHAR_BIT */ | |
175 | assert(!(pos->offset % CHAR_BIT)); | |
47415068 JD |
176 | return mmap_align_addr(pos->base_mma) + |
177 | pos->mmap_base_offset + (pos->offset / CHAR_BIT); | |
0f980a35 MD |
178 | } |
179 | ||
8c572eba | 180 | static inline |
46322b33 | 181 | void ctf_dummy_pos(struct ctf_stream_pos *pos, struct ctf_stream_pos *dummy) |
8c572eba | 182 | { |
46322b33 | 183 | memcpy(dummy, pos, sizeof(struct ctf_stream_pos)); |
8c572eba MD |
184 | dummy->dummy = 1; |
185 | dummy->fd = -1; | |
186 | } | |
187 | ||
188 | /* | |
189 | * Check if current packet can hold data. | |
190 | * Returns 0 for success, negative error otherwise. | |
191 | */ | |
192 | static inline | |
46322b33 | 193 | int ctf_pos_packet(struct ctf_stream_pos *dummy) |
8c572eba | 194 | { |
90bf3cef | 195 | if (unlikely(dummy->offset > dummy->packet_size)) |
8c572eba MD |
196 | return -ENOSPC; |
197 | return 0; | |
198 | } | |
199 | ||
200 | static inline | |
46322b33 | 201 | void ctf_pos_pad_packet(struct ctf_stream_pos *pos) |
8c572eba | 202 | { |
46322b33 | 203 | ctf_move_pos(pos, pos->packet_size - pos->offset); |
8c572eba MD |
204 | } |
205 | ||
c5e74408 | 206 | static inline |
fef3bf22 | 207 | int ctf_pos_access_ok(struct ctf_stream_pos *pos, uint64_t bit_len) |
c5e74408 | 208 | { |
90bf3cef | 209 | if (unlikely(pos->offset == EOF)) |
c5e74408 | 210 | return 0; |
90bf3cef | 211 | if (unlikely(pos->offset + bit_len > pos->packet_size)) |
c5e74408 MD |
212 | return 0; |
213 | return 1; | |
214 | } | |
215 | ||
5f643ed7 MD |
216 | /* |
217 | * Update the stream position for to the current event. This moves to | |
218 | * the next packet if we are located at the end of the current packet. | |
219 | */ | |
220 | static inline | |
221 | void ctf_pos_get_event(struct ctf_stream_pos *pos) | |
222 | { | |
223 | assert(pos->offset <= pos->content_size); | |
224 | if (pos->offset == pos->content_size) { | |
fef3bf22 | 225 | printf_debug("ctf_packet_seek (before call): %" PRId64 "\n", |
5f643ed7 | 226 | pos->offset); |
06789ffd | 227 | pos->packet_seek(&pos->parent, 0, SEEK_CUR); |
fef3bf22 | 228 | printf_debug("ctf_packet_seek (after call): %" PRId64 "\n", |
5f643ed7 MD |
229 | pos->offset); |
230 | } | |
231 | } | |
232 | ||
9e88d150 | 233 | void ctf_print_timestamp(FILE *fp, struct ctf_stream_definition *stream, |
7d97fad9 MD |
234 | uint64_t timestamp); |
235 | ||
d79865b9 | 236 | #endif /* _BABELTRACE_CTF_TYPES_H */ |