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2005-11-14[workqueue] Update workqueue users callbacks to additional argumentspaul
2005-11-14 Paul Jakma <paul.jakma@sun.com> * (general) pass struct work-queue to callback functions. * workqueue.h: (struct work_queue) move the state flag variables to end. Add an opaque pointer to spec, for user-data global to the queue. Pass reference to work_queue to all callbacks. * workqueue.c: (work_queue_item_remove) pass ref to workqueue to user callbacks. (work_queue_run) ditto.
2005-11-142005-11-14 Paul Jakma <paul.jakma@sun.com>paul
* (general) Add state to detect queue floods. There's no sense trying to be sparing of CPU resources, if the queue is flooding and using ever more memory resources. we should just get on with clearing the queue. The sense of delay and hold were wrong way around, fix. * workqueue.h: (struct work_queue) Add status bitfield. Add 'flood' integer to workqueue spec. Add runs_since_clear counter to workqueue. * workqueue.c: (work_queue_new) set defaults for delay, hold and flood. (work_queue_add) initial schedule should use delay, not hold. (show_work_queues) Print flood field, conserve whitespace. (work_queue_unplug) use delay, not hold. (work_queue_run) consecutive runs should be seperated by hold time, not delay. Keep track of number of consecutive runs, go into 'overdrive' if queue is being flooded, we can't avoid making heavy use of resources, better to use CPU than ever more RAM.
2005-05-232005-05-23 Paul Jakma <paul@dishone.st>paul
* workqueue.h: Add a WQ_QUEUE_BLOCKED item_status return code, to allow a queue function to indicate the queue is not ready/blocked - rather than any problem with the item at hand. Add a notion of being able to 'plug' and 'unplug' a queue. Add helpers to plug/unplug a queue. Add a completion callback, to be called when a queue is emptied. * workqueue.c: (work_queue_new) remove useless list_free. (work_queue_schedule) new internal helper function to schedule queue, if appropriate. (work_queue_add) use work_queue_schedule (show_work_queues) Print 'P' if queue is plugged. (work_queue_plug) new API function, plug a queue - ie prevent it from 'drained' / processed / scheduled. (work_queue_unplug) unplug a queue, allowing it to be drained / scheduled / processed again. (work_queue_run) Add support for WQ_QUEUE_BLOCKED. Add comment for RETRY_NOW case. Make hysteris more aggresive in ramping up granularity, improves performance significantly. Add support for calling completion callback when queue is emptied, possibly useful for knowing when to unplug a queue.
2005-04-272005-04-27 Andrew J. Schorr <ajschorr@alumni.princeton.edu>ajs
* workqueue.c (show_work_queues): Remove unused gettimeofday call.
2005-04-272005-04-27 Paul Jakma <paul.jakma@sun.com>paul
* workqueue.h: (struct work_queue_item) change retry_count to ran, its a count of number item has been run. * workqueue.c: (show_work_queues) Fix formating of slightly bugfix: fix SIGFPE if wq->runs is 0. (work_queue_run) retry logic was slightly wrong. cycles.best is 0 initialy, granularity is 1, so update best if cycles >= granularity, not just >.
2005-04-252005-04-25 Paul Jakma <paul.jakma@sun.com>paul
* workqueue.{c,h}: Helper API for setting up and running queues via background threads. * command.c: install the 'show workqueues' command * memtypes.c: Add work queue mtypes, and a rib-queue type for a zebra rib work queue. * memtypes.h: Updated to match memtypes.c * Makefile.am: Add new workqueue files to build.