Event Recording/CTF: Get closer to LTTNG output

[Sebastian Huber]

Hello Ravindra,

the basic structure is now similar to the LTTNG output. The next step is 
to produce a packet header identical to LTTNG:

trace {
	major = 1;
	minor = 8;
	uuid = "6a7715d0-b502-4c65-8678-6777ac7f755a";
	byte_order = le;
	packet.header := struct {
		uint32_t magic;
		uint8_t  uuid[16];
		uint32_t stream_id;
		uint64_t stream_instance_id;
	};
};

Move the generation of the metadata file to the record client.

Generate the clock dynamically, e.g. the use the current CLOCK_REALTIME 
to set the offset.

clock {
	name = "monotonic";
	uuid = "234d669d-7651-4bc1-a7fd-af581ecc6232";
	description = "Monotonic Clock";
	freq = 1000000000; /* Frequency, in Hz */
	/* clock value offset from Epoch is: offset * (1/freq) */
	offset = 1539783991179109789;
};

Add a LTTNG compatible packet context:

struct packet_context {
	uint64_clock_monotonic_t timestamp_begin;
	uint64_clock_monotonic_t timestamp_end;
	uint64_t content_size;
	uint64_t packet_size;
	uint64_t packet_seq_num;
	unsigned long events_discarded;
	uint32_t cpu_id;
};

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber at embedded-brains.de
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
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