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libsysprof-capture: add file chunk frame type

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This commit is contained in:
Christian Hergert
2019-05-27 15:18:44 -07:00
parent 1940e45bf4
commit 7650d6e7c6
9 changed files with 277 additions and 14 deletions
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51
src/libsysprof-capture/sysprof-capture-reader.c
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@ -232,6 +232,17 @@ sysprof_capture_reader_bswap_frame (SysprofCaptureReader *self,
}
}
static inline void
sysprof_capture_reader_bswap_file_chunk (SysprofCaptureReader *self,
SysprofCaptureFileChunk *file_chunk)
{
g_assert (self != NULL);
g_assert (file_chunk != NULL);
if (G_UNLIKELY (self->endian != G_BYTE_ORDER))
file_chunk->len = GUINT16_SWAP_LE_BE (file_chunk->len);
}
static inline void
sysprof_capture_reader_bswap_log (SysprofCaptureReader *self,
SysprofCaptureLog *log)
@ -1122,3 +1133,43 @@ sysprof_capture_reader_get_stat (SysprofCaptureReader *self,
return self->st_buf_set;
}
const SysprofCaptureFileChunk *
sysprof_capture_reader_read_file (SysprofCaptureReader *self)
{
SysprofCaptureFileChunk *file_chunk;
g_assert (self != NULL);
g_assert ((self->pos % SYSPROF_CAPTURE_ALIGN) == 0);
g_assert (self->pos <= self->bufsz);
if (!sysprof_capture_reader_ensure_space_for (self, sizeof *file_chunk))
return NULL;
file_chunk = (SysprofCaptureFileChunk *)(gpointer)&self->buf[self->pos];
sysprof_capture_reader_bswap_frame (self, &file_chunk->frame);
if (file_chunk->frame.type != SYSPROF_CAPTURE_FRAME_FILE_CHUNK)
return NULL;
if (file_chunk->frame.len < sizeof *file_chunk)
return NULL;
if (!sysprof_capture_reader_ensure_space_for (self, file_chunk->frame.len))
return NULL;
file_chunk = (SysprofCaptureFileChunk *)(gpointer)&self->buf[self->pos];
sysprof_capture_reader_bswap_file_chunk (self, file_chunk);
self->pos += file_chunk->frame.len;
if ((self->pos % SYSPROF_CAPTURE_ALIGN) != 0)
return NULL;
/* Ensure trailing \0 in .path */
file_chunk->path[sizeof file_chunk->path - 1] = 0;
return file_chunk;
}