+++ /dev/null
-#ifndef BABELTRACE_CTF_WRITER_SERIALIZE_INTERNAL_H
-#define BABELTRACE_CTF_WRITER_SERIALIZE_INTERNAL_H
-
-/*
- * Copyright 2017 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.
- *
- * The Common Trace Format (CTF) Specification is available at
- * http://www.efficios.com/ctf
- */
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <limits.h>
-#include <babeltrace/compat/mman-internal.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <babeltrace/align-internal.h>
-#include <babeltrace/endian-internal.h>
-#include <babeltrace/common-internal.h>
-#include <babeltrace/mmap-align-internal.h>
-#include <babeltrace/types.h>
-#include <babeltrace/ctf-writer/field-types.h>
-#include <babeltrace/ctf-writer/fields-internal.h>
-#include <babeltrace/ctf-writer/fields.h>
-#include <babeltrace/assert-internal.h>
-
-#define PACKET_LEN_INCREMENT (bt_common_get_page_size() * 8 * CHAR_BIT)
-
-#if (BYTE_ORDER == BIG_ENDIAN)
-# define BT_CTF_MY_BYTE_ORDER BT_CTF_BYTE_ORDER_BIG_ENDIAN
-#else
-# define BT_CTF_MY_BYTE_ORDER BT_CTF_BYTE_ORDER_LITTLE_ENDIAN
-#endif
-
-struct bt_ctf_stream_pos {
- int fd;
- int prot; /* mmap protection */
- int flags; /* mmap flags */
-
- /* Current position */
- off_t mmap_offset; /* mmap offset in the file, in bytes */
- off_t mmap_base_offset; /* offset of start of packet in mmap, in bytes */
- uint64_t packet_size; /* current packet size, in bits */
- int64_t offset; /* offset from base, in bits. EOF for end of file. */
- struct mmap_align *base_mma;/* mmap base address */
-};
-
-BT_HIDDEN
-int bt_ctf_field_integer_write(struct bt_ctf_field_common *field,
- struct bt_ctf_stream_pos *pos,
- enum bt_ctf_byte_order native_byte_order);
-
-BT_HIDDEN
-int bt_ctf_field_floating_point_write(struct bt_ctf_field_common *field,
- struct bt_ctf_stream_pos *pos,
- enum bt_ctf_byte_order native_byte_order);
-
-static inline
-int bt_ctf_stream_pos_access_ok(struct bt_ctf_stream_pos *pos, uint64_t bit_len)
-{
- uint64_t max_len;
-
- if (unlikely(pos->offset == EOF))
- return 0;
-
- if (pos->prot == PROT_READ) {
- /*
- * Reads may only reach up to the "content_size",
- * regardless of the packet_size.
- */
- max_len = pos->offset;
- } else {
- /* Writes may take place up to the end of the packet. */
- max_len = pos->packet_size;
- }
- if (unlikely(pos->offset < 0 || bit_len > INT64_MAX - pos->offset)) {
- return 0;
- }
- if (unlikely(pos->offset + bit_len > max_len))
- return 0;
- return 1;
-}
-
-static inline
-int bt_ctf_stream_pos_move(struct bt_ctf_stream_pos *pos, uint64_t bit_offset)
-{
- int ret = 0;
-
- ret = bt_ctf_stream_pos_access_ok(pos, bit_offset);
- if (!ret) {
- goto end;
- }
- pos->offset += bit_offset;
-end:
- return ret;
-}
-
-static inline
-int bt_ctf_stream_pos_align(struct bt_ctf_stream_pos *pos, uint64_t bit_offset)
-{
- return bt_ctf_stream_pos_move(pos,
- offset_align(pos->offset, bit_offset));
-}
-
-static inline
-char *bt_ctf_stream_pos_get_addr(struct bt_ctf_stream_pos *pos)
-{
- /* Only makes sense to get the address after aligning on CHAR_BIT */
- BT_ASSERT(!(pos->offset % CHAR_BIT));
- return ((char *) mmap_align_addr(pos->base_mma)) +
- pos->mmap_base_offset + (pos->offset / CHAR_BIT);
-}
-
-static inline
-int bt_ctf_stream_pos_init(struct bt_ctf_stream_pos *pos,
- int fd, int open_flags)
-{
- pos->fd = fd;
-
- switch (open_flags & O_ACCMODE) {
- case O_RDONLY:
- pos->prot = PROT_READ;
- pos->flags = MAP_PRIVATE;
- break;
- case O_RDWR:
- pos->prot = PROT_READ | PROT_WRITE;
- pos->flags = MAP_SHARED;
- break;
- default:
- abort();
- }
-
- return 0;
-}
-
-static inline
-int bt_ctf_stream_pos_fini(struct bt_ctf_stream_pos *pos)
-{
- if (pos->base_mma) {
- int ret;
-
- /* unmap old base */
- ret = munmap_align(pos->base_mma);
- if (ret) {
- return -1;
- }
- }
-
- return 0;
-}
-
-BT_HIDDEN
-void bt_ctf_stream_pos_packet_seek(struct bt_ctf_stream_pos *pos, size_t index,
- int whence);
-
-#endif /* BABELTRACE_CTF_WRITER_SERIALIZE_INTERNAL_H */
projects / babeltrace.git / blobdiff