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refine the kbps comments, add one usage.

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This commit is contained in:
winlin 2015-05-22 20:31:07 +08:00
parent 6ca46e84bc
commit d645411392
2 changed files with 29 additions and 21 deletions
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49
trunk/src/app/srs_app_kbps.hpp
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@ -135,27 +135,34 @@ public:
}; };
/** /**
* to statistic the kbps of io. * to statistic the kbps of io.
* itself can be a statistic source, for example, used for SRS bytes stat. * itself can be a statistic source, for example, used for SRS bytes stat.
* there are two usage scenarios: * there are some usage scenarios:
* 1. connections to calc kbps by sample(): * 1. connections to calc kbps by sample():
* SrsKbps* kbps = ...; * SrsKbps* kbps = ...;
* kbps->set_io(in, out) * kbps->set_io(in, out)
* kbps->sample() * kbps->sample()
* kbps->get_xxx_kbps(). * kbps->get_xxx_kbps().
* the connections know how many bytes already send/recv. * the connections know how many bytes already send/recv.
* 2. server to calc kbps by add_delta(): * 2. server to calc kbps by add_delta():
* SrsKbps* kbps = ...; * SrsKbps* kbps = ...;
* kbps->set_io(NULL, NULL) * kbps->set_io(NULL, NULL)
* for each connection in connections: * for each connection in connections:
* IKbpsDelta* delta = connection; // where connection implements IKbpsDelta * IKbpsDelta* delta = connection; // where connection implements IKbpsDelta
* delta->resample() * delta->resample()
* kbps->add_delta(delta) * kbps->add_delta(delta)
* delta->cleanup() * delta->cleanup()
* kbps->sample() * kbps->sample()
* kbps->get_xxx_kbps(). * kbps->get_xxx_kbps().
* the server never know how many bytes already send/recv, for the connection maybe closed. * 3. kbps used as IKbpsDelta, to provides delta bytes:
*/ * SrsKbps* kbps = ...;
* kbps->set_io(in, out);
* IKbpsDelta* delta = (IKbpsDelta*)kbps;
* delta->resample();
* printf("delta is %d/%d", delta->get_send_bytes_delta(), delta->get_recv_bytes_delta());
* delta->cleanup();
* the server never know how many bytes already send/recv, for the connection maybe closed.
*/
class SrsKbps : public virtual ISrsProtocolStatistic, public virtual IKbpsDelta class SrsKbps : public virtual ISrsProtocolStatistic, public virtual IKbpsDelta
{ {
private: private:

1
trunk/src/app/srs_app_statistic.hpp
View file

@ -167,6 +167,7 @@ public:
* sample the kbps, add delta bytes of conn. * sample the kbps, add delta bytes of conn.
* use kbps_sample() to get all result of kbps stat. * use kbps_sample() to get all result of kbps stat.
*/ */
// TODO: FIXME: the add delta must use IKbpsDelta interface instead.
virtual void kbps_add_delta(SrsConnection* conn); virtual void kbps_add_delta(SrsConnection* conn);
/** /**
* calc the result for all kbps. * calc the result for all kbps.