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capture: add end time for captures

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Update the end time when we flush the buffer to disk. Also add
a way to either incrementally get the end time or rely on the
header when possible.
This commit is contained in:
Christian Hergert
2016-09-27 21:24:33 -07:00
parent 4953731dd7
commit 2197a0c02e
5 changed files with 65 additions and 3 deletions
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22
lib/sp-capture-writer.c
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@ -62,7 +62,6 @@ struct _SpCaptureWriter
* alinged for the write buffer. This improves the performance of large
* writes to the target file-descriptor.
*/
volatile gint ref_count;
/*
@ -397,6 +396,7 @@ sp_capture_writer_new_from_fd (int fd,
header->padding = 0;
g_strlcpy (header->capture_time, nowstr, sizeof header->capture_time);
header->time = SP_CAPTURE_CURRENT_TIME;
header->end_time = 0;
memset (header->suffix, 0, sizeof header->suffix);
self->pos += sizeof *header;
@ -710,13 +710,31 @@ sp_capture_writer_add_timestamp (SpCaptureWriter *self,
return TRUE;
}
static gboolean
sp_capture_writer_flush_end_time (SpCaptureWriter *self)
{
gint64 end_time = SP_CAPTURE_CURRENT_TIME;
g_assert (self != NULL);
/* This field is opportunistic, so a failure is okay. */
pwrite (self->fd,
&end_time,
sizeof (end_time),
G_STRUCT_OFFSET (SpCaptureFileHeader, end_time));
return TRUE;
}
gboolean
sp_capture_writer_flush (SpCaptureWriter *self)
{
g_assert (self != NULL);
return (sp_capture_writer_flush_jitmap (self) &&
sp_capture_writer_flush_data (self));
sp_capture_writer_flush_data (self) &&
sp_capture_writer_flush_end_time (self));
}
/**