Revision ee83a495 doc/classdiagrams/pubsub.uml
| doc/classdiagrams/pubsub.uml | ||
|---|---|---|
| 50 | 50 |
} |
| 51 | 51 |
|
| 52 | 52 |
$group("subscriber") {
|
| 53 |
$group("real-time constraint data") {
|
|
| 54 |
/' The top level RT constraints structure. '/ |
|
| 55 |
$structure("urt_rtdata_t") {
|
|
| 56 |
'The actual RT constraint class. |
|
| 57 |
+ {field} class : urt_rtconstraintclass_t
|
|
| 58 |
'Parameters of the RT constraints. |
|
| 59 |
+ {field} params : urt_rtconstraintsparams_t
|
|
| 60 |
} |
|
| 61 |
|
|
| 62 |
/' Descriptor to distinguish the four RT classes. '/ |
|
| 63 |
$enumeration("urt_rtclass_t") {
|
|
| 64 |
'Hard real-time. |
|
| 65 |
URT_RTCLASS_HARD = 0 |
|
| 66 |
'Firm real-time. |
|
| 67 |
URT_RTCLASS_FIRM = 1 |
|
| 68 |
'Soft real-time. |
|
| 69 |
URT_RTCLASS_SOFT = 2 |
|
| 70 |
'No real-time at all. |
|
| 71 |
URT_RTCLASS_NONE = 3 |
|
| 72 |
} |
|
| 73 |
|
|
| 74 |
/' Union structure, holding RT constraints parameters. '/ |
|
| 75 |
$union("urt_rtclassdata_t") {
|
|
| 76 |
'Parameters for hard real-time. |
|
| 77 |
+ {field} hrt : urt_hrtparams_t
|
|
| 78 |
'Parameters for firm real-time. |
|
| 79 |
+ {field} frt : urt_frtparams_t
|
|
| 80 |
'Parameters for soft real-time. |
|
| 81 |
+ {field} srt : urt_srtparans_t
|
|
| 82 |
'Parameters for non-real-time. |
|
| 83 |
+ {field} nrt : urt_nrtparams_t
|
|
| 84 |
} |
|
| 85 |
|
|
| 86 |
/' Parameters for hard real-time. '/ |
|
| 87 |
$structure("urt_hrtdata_t") {
|
|
| 88 |
'Pointer to the next HRT subscriber in a list. |
|
| 89 |
+ {field} next : urt_subscriber_t*
|
|
| 90 |
.. URT_CFG_PUBSUB_QOS_DEADLINECHECKS == true .. |
|
| 91 |
'QoS Timer to detect missed deadlines. |
|
| 92 |
+ {field} qosDeadlineTimer : urt_osTimer_t
|
|
| 93 |
'Maximum temporal offset between creation and consumption of messages. |
|
| 94 |
+ {field} deadlineOffset : urt_delay_t
|
|
| 95 |
.. URT_CFG_PUBSUB_QOS_RATECHECKS == true .. |
|
| 96 |
'Expected rate at which data is published. |
|
| 97 |
+ {field} expectedRate : urt_delay_t
|
|
| 98 |
.. URT_CFG_PUBSUB_PROFILING == true || URT_CFG_PUBSUB_QOS_JITTERCHECKS == true .. |
|
| 99 |
'Maximum expected jitter. |
|
| 100 |
+ {field} maxJitter : urt_delay_t
|
|
| 101 |
'Minimum latency ever detected (to calculate jitter). |
|
| 102 |
+ {field} minLatency : urt_delay_t
|
|
| 103 |
'Maximum latency ever detected (to calculate jitter). |
|
| 104 |
+ {field} maxLatency : urt_delay_t
|
|
| 105 |
} |
|
| 106 |
|
|
| 107 |
/' Parameters for firm real-time. '/ |
|
| 108 |
$structure("urt_frtdata_t") {
|
|
| 109 |
.. URT_CFG_PUBSUB_QOS_DEADLINECHECKS == true .. |
|
| 110 |
'Maximum temporal offset between creation and consumption of messages. |
|
| 111 |
+ {field} deadlineOffset : urt_delay_t
|
|
| 112 |
.. URT_CFG_PUBSUB_QOS_RATECHECKS == true .. |
|
| 113 |
'Expected rate at which data is published. |
|
| 114 |
+ {field} expectedRate : urt_delay_t
|
|
| 115 |
.. URT_CFG_PUBSUB_PROFILING == true || URT_CFG_PUBSUB_QOS_JITTERCHECKS == true .. |
|
| 116 |
'Maximum expected jitter. |
|
| 117 |
+ {field} maxJitter : urt_delay_t
|
|
| 118 |
'Minimum latency ever detected (to calculate jitter). |
|
| 119 |
+ {field} minLatency : urt_delay_t
|
|
| 120 |
'Maximum latency ever detected (to calculate jitter). |
|
| 121 |
+ {field} maxLatency : urt_delay_t
|
|
| 122 |
} |
|
| 123 |
|
|
| 124 |
$group("SRT data") {
|
|
| 125 |
/' Function type to be called when calculating the usefulness of a message. '/ |
|
| 126 |
$function("urt_srtusefulnessfunc_t") {
|
|
| 127 |
'Takes a delay and optionally parameters as arguments and returns a float in [0, 1]. |
|
| 128 |
urt_srtusefulnessfunc_t (dt : urt_delay_t, params : void*) : float |
|
| 129 |
} |
|
| 130 |
|
|
| 131 |
/' Parameters for soft real-time. '/ |
|
| 132 |
$structure("urt_srtdata_t") {
|
|
| 133 |
'Callback to calculate usefulness of a message |
|
| 134 |
+ {field} usefullnesscb : urt_srtusefulnessfunc_t*
|
|
| 135 |
'Optional parameters for the callback function. |
|
| 136 |
+ {field} cbparams : void*
|
|
| 137 |
} |
|
| 138 |
} /'SRT data'/ |
|
| 139 |
|
|
| 140 |
/' Parameters for non-real-time. '/ |
|
| 141 |
$structure("urt_nrtdata_t") {
|
|
| 142 |
'There are nor parameters in this case. |
|
| 143 |
} |
|
| 144 |
} /'real-time constraint data'/ |
|
| 145 |
|
|
| 146 |
/' Subscriber type. '/ |
|
| 147 |
$structure("urt_subscriber_t") {
|
|
| 53 |
/' Base subscriber type. '/ |
|
| 54 |
$structure("urt_basesubscriber_t") {
|
|
| 148 | 55 |
'Pointer to the topic, this subscriber subscribed to. |
| 149 | 56 |
+ {field} topic : urt_topic_t*
|
| 150 | 57 |
'Event listener to notify the node about new messages. |
| 151 | 58 |
+ {field} evtListener : urt_osEventListener_t
|
| 152 |
'Real-time class descriptor. |
|
| 153 |
+ {field} rtdata : urt_rtdata_t
|
|
| 154 | 59 |
'Pointer to the message consumed most recently. |
| 155 | 60 |
+ {field} lastMessage : urt_message_t*
|
| 156 | 61 |
'Copy of the origin time of the message consumed most recently. |
| ... | ... | |
| 160 | 65 |
+ {field} sumLatencies : uint64_t
|
| 161 | 66 |
'Number of messages received. |
| 162 | 67 |
+ {field} numMessagesReceived : uint64_t
|
| 68 |
} |
|
| 69 |
|
|
| 70 |
/' Function type to be called when calculating the usefulness of a message. '/ |
|
| 71 |
$function("urt_srtusefulnessfunc_t") {
|
|
| 72 |
'Takes a delay and optionally parameters as arguments and returns a float in [0, 1]. |
|
| 73 |
urt_srtusefulnessfunc_t (dt : urt_delay_t, params : void*) : float |
|
| 74 |
} |
|
| 75 |
|
|
| 76 |
/' NRT subscriber type. '/ |
|
| 77 |
$structure("urt_nrtsubscriber_t") {
|
|
| 78 |
.. URT_CFG_PUBSUB_PROFILING == true .. |
|
| 79 |
'Minimum latency ever detected. |
|
| 80 |
+ {field} minLatency : urt_delay_t
|
|
| 81 |
'Maximum latency ever detected. |
|
| 82 |
+ {field} maxLatency : urt_delay_t
|
|
| 83 |
__ |
|
| 84 |
'Initializes a urt_nrtsubscriber_t object. |
|
| 85 |
+ {method} urtNrtSubscriberInit (subscriber : urt_nrtsubscriber_t*) : urt_status_t
|
|
| 86 |
'Tries to subscribe to a topic and optionally contributes a list of messages to the topic. |
|
| 87 |
+ {method} urtNrtSubscriberSubscribe (subscriber : urt_nrtsubscriber_t*, topic : urt_topic_t*, messages : urt_message_t*) : urt_status_t
|
|
| 88 |
'Fetches the next message in the buffer, optionally copies the payload and optionally returns the latency. |
|
| 89 |
+ {method} urtNrtSubscriberFetchNextMessage (subscriber : urt_nrtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 90 |
'Fetches the latest message, optionally copies the payload and optionally returns the latency. |
|
| 91 |
+ {method} urtNrtSubscriberFetchLatestMessage (subscriber : urt_nrtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 92 |
'Unsubscribes from a topic. |
|
| 93 |
+ {method} urtNrtSubscriberUnsubscribe (subscriber : urt_nrtsubscriber_t*) : urt_status_t
|
|
| 94 |
} |
|
| 95 |
|
|
| 96 |
/' SRT subscriber type. '/ |
|
| 97 |
$structure("urt_srtsubscriber_t") {
|
|
| 98 |
'Callback to calculate usefulness of a message |
|
| 99 |
+ {field} usefulnesscb : urt_srtusefulnessfunc_t*
|
|
| 100 |
'Optional parameters for the usefulness callback function. |
|
| 101 |
+ {field} cbparams : void*
|
|
| 163 | 102 |
.. URT_CFG_PUBSUB_PROFILING == true .. |
| 103 |
'Minimum latency ever detected. |
|
| 104 |
+ {field} minLatency : urt_delay_t
|
|
| 105 |
'Maximum latency ever detected. |
|
| 106 |
+ {field} maxLatency : urt_delay_t
|
|
| 107 |
__ |
|
| 108 |
'Initializes a urt_srtsubscriber_t object. |
|
| 109 |
+ {method} urtSrtSubscriberInit (subscriber : urt_srtsubscriber_t*) : urt_status_t
|
|
| 110 |
'Tries to subscribe to a topic, sets all parameters and optionally contributes a list of messages to the topic. |
|
| 111 |
+ {method} urtSrtSubscriberSubscribe (subscriber : urt_srtsubscriber_t*, topic : urt_topic_t*, messages : urt_message_t*, usefulnesscb : urt_srtusefulnessfunc_t*, cbparams : void*) : urt_status_t
|
|
| 112 |
'Fetches the next message in the buffer, optionally copies the payload and optionally returns the latency. |
|
| 113 |
+ {method} urtSrtSubscriberFetchNextMessage (subscriber : urt_srtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 114 |
'Fetches the latest message, optionally copies the payload and optionally returns the latency. |
|
| 115 |
+ {method} urtSrtSubscriberFetchLatestMessage (subscriber : urt_srtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 116 |
'Calculates the usefulness of a message after the specified delay. |
|
| 117 |
+ {method} urtSrtSubscriberCalculateUsefulness (subscriber : urt_srtsubscriber_t*, latency : urt_delay_t) : float
|
|
| 118 |
'Unsubscribes from a topic. |
|
| 119 |
+ {method} urtSrtSubscriberUnsubscribe (subscriber : urt_srtsubscriber_t*) : urt_status_t
|
|
| 120 |
} |
|
| 121 |
|
|
| 122 |
/' FRT subscriber type. '/ |
|
| 123 |
$structure("urt_frtsubscriber_t") {
|
|
| 124 |
.. URT_CFG_PUBSUB_QOS_DEADLINECHECKS == true .. |
|
| 125 |
'Maximum temporal offset between creation and consumption of messages. |
|
| 126 |
+ {field} deadlineOffset : urt_delay_t
|
|
| 127 |
.. URT_CFG_PUBSUB_QOS_JITTERCHECKS == true .. |
|
| 128 |
'Maximum expected jitter. |
|
| 129 |
+ {field} maxJitter : urt_delay_t
|
|
| 130 |
.. URT_CFG_PUBSUB_QOS_JITTERCHECKS == true || URT_CFG_PUBSUB_PROFILING == true .. |
|
| 164 | 131 |
'Minimum latency ever detected (to calculate jitter). |
| 165 | 132 |
+ {field} minLatency : urt_delay_t
|
| 166 | 133 |
'Maximum latency ever detected (to calculate jitter). |
| 167 | 134 |
+ {field} maxLatency : urt_delay_t
|
| 168 | 135 |
__ |
| 169 |
'Initializes a urt_subscriber_t object. |
|
| 170 |
+ {method} urtSubscriberInit (subscriber : urt_subscriber_t*) : urt_status_t
|
|
| 171 |
'Tries to subscribe to a topic as HRT subscriber, sets all according parameters and optionally contributes a list of messages to the topic.
|
|
| 172 |
+ {method} urtSubscriberSubscribeHrt (subscriber : urt_subscriber_t*, topic : urt_topic_t*, messages : urt_message_t*, deadline : urt_delay_t, rate : urt_delay_t, jitter : urt_delay_t) : urt_status_t
|
|
| 173 |
'Tries to subscribe to a topic as FRT subscriber, sets all according parameters and optionally contributes a list of messages to the topic.
|
|
| 174 |
+ {method} urtSubscriberSubscribeFrt (subscriber : urt_subscriber_t*, topic : urt_topic_t*, messages : urt_message_t*, deadline : urt_delay_t, rate : urt_delay_t, jitter : urt_delay_t) : urt_status_t
|
|
| 175 |
'Tries to subscribe to a topic as SRT subscriber, sets all according parameters and optionally contributes a list of messages to the topic.
|
|
| 176 |
+ {method} urtSubscriberSubscribeSrt (subscriber : urt_subscriber_t*, topic : urt_topic_t*, messages : urt_message_t*, usefulnesscb : urt_srtusefulnessfunc_t*, cbparams : void*) : urt_status_t
|
|
| 177 |
'Tries to subscribe to a topic as NRT subscriber and optionally contributes a list of messages to the topic.
|
|
| 178 |
+ {method} urtSubscriberSubscribeNrt (subscriber : urt_subscriber_t*, topic : urt_topic_t*, messages : urt_message_t*) : urt_status_t
|
|
| 136 |
'Initializes a urt_frtsubscriber_t object.
|
|
| 137 |
+ {method} urtFrtSubscriberInit (subscriber : urt_frtsubscriber_t*) : urt_status_t
|
|
| 138 |
'Tries to subscribe to a topic, sets all parameters and optionally contributes a list of messages to the topic.
|
|
| 139 |
+ {method} urtFrtSubscriberSubscribe (subscriber : urt_frtsubscriber_t*, topic : urt_topic_t*, messages : urt_message_t*, deadline : urt_delay_t, jitter : urt_delay_t) : urt_status_t
|
|
| 140 |
'Fetches the next message in the buffer, optionally copies the payload and optionally returns the latency.
|
|
| 141 |
+ {method} urtFrtSubscriberFetchNextMessage (subscriber : urt_frtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 142 |
'Fetches the latest message, optionally copies the payload and optionally returns the latency.
|
|
| 143 |
+ {method} urtFrtSubscriberFetchLatestMessage (subscriber : urt_frtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 144 |
'Checks whether a message is valid after the specified delay.
|
|
| 145 |
+ {method} urtFrtSubscriberCalculateValidity (subscriber : urt_frtsubscriber_t*, latency : urt_delay_t) : bool
|
|
| 179 | 146 |
'Unsubscribes from a topic. |
| 180 |
+ {method} urtSubscriberUnsubscribe (subscriber : urt_subscriber_t*) : urt_status_t
|
|
| 147 |
+ {method} urtFrtSubscriberUnsubscribe (subscriber : urt_frtsubscriber_t*) : urt_status_t
|
|
| 148 |
} |
|
| 149 |
|
|
| 150 |
/' HRT subscriber type. '/ |
|
| 151 |
$structure("urt_hrtsubscriber_t") {
|
|
| 152 |
'Pointer to the next HRT subscriber in a list. |
|
| 153 |
+ {field} next : urt_hrtsubscriber_t*
|
|
| 154 |
.. URT_CFG_PUBSUB_QOS_DEADLINECHECKS == true .. |
|
| 155 |
'Maximum temporal offset between creation and consumption of messages. |
|
| 156 |
+ {field} deadlineOffset : urt_delay_t
|
|
| 157 |
'QoS Timer to detect missed deadlines. |
|
| 158 |
+ {field} qosDeadlineTimer : urt_osTimer_t
|
|
| 159 |
.. URT_CFG_PUBSUB_QOS_JITTERCHECKS == true .. |
|
| 160 |
'Maximum expected jitter. |
|
| 161 |
+ {field} maxJitter : urt_delay_t
|
|
| 162 |
.. URT_CFG_PUBSUB_QOS_JITTERCHECKS == true || URT_CFG_PUBSUB_PROFILING == true.. |
|
| 163 |
'Minimum latency ever detected (to calculate jitter). |
|
| 164 |
+ {field} minLatency : urt_delay_t
|
|
| 165 |
'Maximum latency ever detected (to calculate jitter). |
|
| 166 |
+ {field} maxLatency : urt_delay_t
|
|
| 167 |
.. URT_CFG_PUBSUB_QOS_RATECHECKS == true .. |
|
| 168 |
'Expected rate at which data is published. |
|
| 169 |
+ {field} expectedRate : urt_delay_t
|
|
| 170 |
__ |
|
| 171 |
'Initializes a urt_hrtsubscriber_t object. |
|
| 172 |
+ {method} urtHrtSubscriberInit (subscriber : urt_hrtsubscriber_t*) : urt_status_t
|
|
| 173 |
'Tries to subscribe to a topic, sets all parameters and optionally contributes a list of messages to the topic. |
|
| 174 |
+ {method} urtHrtSubscriberSubscribe (subscriber : urt_hrtsubscriber_t*, topic : urt_topic_t*, messages : urt_message_t*, deadline : urt_delay_t, rate : urt_delay_t, jitter : urt_delay_t) : urt_status_t
|
|
| 181 | 175 |
'Fetches the next message in the buffer, optionally copies the payload and optionally returns the latency. |
| 182 |
+ {method} urtSubscriberFetchNextMessage (subscriber : urt_subscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 176 |
+ {method} urtHrtSubscriberFetchNextMessage (subscriber : urt_hrtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 183 | 177 |
'Fetches the latest message, optionally copies the payload and optionally returns the latency. |
| 184 |
+ {method} urtSubscriberFetchLatestMessage (subscriber : urt_subscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 185 |
'Calculates the usefulness of a message after the specified delay depending on the SRT or FRT (or HRT) parameters.
|
|
| 186 |
+ {method} urtSubscriberCalculateUsefulness (subscriber : urt_subscriber_t*, latency : urt_delay_t) : float
|
|
| 178 |
+ {method} urtHrtSubscriberFetchLatestMessage (subscriber : urt_hrtsubscriber_t*, payload : void*, bytes : size_t, latency : urt_delay_t*) : urt_status_t
|
|
| 179 |
'Unsubscribes from a topic.
|
|
| 180 |
+ {method} urtHrtSubscriberUnsubscribe (subscriber : urt_hrtsubscriber_t*) : urt_status_t
|
|
| 187 | 181 |
} |
| 188 | 182 |
} /'subscriber'/ |
| 189 | 183 |
|
| ... | ... | |
| 191 | 185 |
$structure("urt_publisher_t") {
|
| 192 | 186 |
'Pointer to the topic for publishing. |
| 193 | 187 |
+ {field} topic : urt_topic_t*
|
| 194 |
.. URT_CFG_PROFILING == true .. |
|
| 188 |
.. URT_CFG_PUBSUB_PROFILING == true ..
|
|
| 195 | 189 |
'Counter of attempts to publish a message. |
| 196 | 190 |
+ {field} publishAttempts : uint64_t
|
| 197 | 191 |
'Counter of failed attempts to publish a message. |
| ... | ... | |
| 216 | 210 |
'Number of HRT subscribers. |
| 217 | 211 |
+ {field} numHrtSubscribers : unsigned int
|
| 218 | 212 |
'List of HRT subscribers, orderd by their expected rate (most critical first). |
| 219 |
+ {field} hrtSubscribers : urt_subscriber_t*
|
|
| 213 |
+ {field} hrtSubscribers : urt_hrtsubscriber_t*
|
|
| 220 | 214 |
'Condition variable to inform waiting publishers when a blocked message becomes available. |
| 221 | 215 |
+ {field} hrtReleased : urt_osCondvar_t
|
| 222 | 216 |
'Mandatory message, each Topic holds. |
| ... | ... | |
| 242 | 236 |
|
| 243 | 237 |
!startsub DEPENDENCIES |
| 244 | 238 |
|
| 245 |
urt_srtdata_t "1" o-- "0..1" urt_srtusefulnessfunc_t |
|
| 246 |
|
|
| 247 |
urt_rtclassdata_t "1" *-- "0..1" urt_hrtdata_t |
|
| 248 |
urt_rtclassdata_t "1" *-- "0..1" urt_frtdata_t |
|
| 249 |
urt_rtclassdata_t "1" *-- "0..1" urt_srtdata_t |
|
| 250 |
urt_rtclassdata_t "1" *-- "0..1" urt_nrtdata_t |
|
| 239 |
urt_message_t "1" o-- "0..1" urt_message_t |
|
| 251 | 240 |
|
| 252 |
urt_rtdata_t "1" *-- "1" urt_rtclass_t
|
|
| 253 |
urt_rtdata_t "1" *-- "1" urt_rtclassdata_t
|
|
| 241 |
urt_nrtsubscriber_t --|> urt_basesubscriber_t
|
|
| 242 |
urt_nrtsubscriber_t ..> urt_message_t
|
|
| 254 | 243 |
|
| 255 |
urt_hrtdata_t "1" o-up- "0..1" urt_subscriber_t |
|
| 244 |
urt_srtsubscriber_t --|> urt_basesubscriber_t |
|
| 245 |
urt_srtsubscriber_t "1" o-- "0..1" urt_srtusefulnessfunc_t |
|
| 246 |
urt_srtsubscriber_t ..> urt_message_t |
|
| 256 | 247 |
|
| 257 |
urt_message_t "1" o-- "0..1" urt_message_t |
|
| 248 |
urt_frtsubscriber_t --|> urt_basesubscriber_t |
|
| 249 |
urt_frtsubscriber_t ..> urt_message_t |
|
| 258 | 250 |
|
| 259 |
urt_subscriber_t "1" *-- "1" urt_rtdata_t
|
|
| 260 |
urt_subscriber_t "1" o- "0..1" urt_topic_t
|
|
| 261 |
urt_subscriber_t "1" o-- "0..1" urt_message_t
|
|
| 251 |
urt_hrtsubscriber_t --|> urt_basesubscriber_t
|
|
| 252 |
urt_hrtsubscriber_t "1" o-- "0..1" urt_hrtsubscriber_t
|
|
| 253 |
urt_hrtsubscriber_t ..> urt_message_t
|
|
| 262 | 254 |
|
| 263 | 255 |
urt_publisher_t "1" o- "1" urt_topic_t |
| 264 | 256 |
urt_publisher_t ..> urt_message_t |
| 265 | 257 |
|
| 266 | 258 |
urt_topic_t "1" o-- "0..1" urt_topic_t |
| 267 |
urt_topic_t "1" o- "0..1" urt_subscriber_t |
|
| 268 |
urt_topic_t "1" o-- "1..1" urt_message_t |
|
| 259 |
urt_topic_t "1" o- "0..1" urt_hrtsubscriber_t |
|
| 269 | 260 |
urt_topic_t "1" *-- "1" urt_message_t |
| 270 | 261 |
|
| 271 | 262 |
!endsub |
Also available in: Unified diff