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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.
2005-05-062005-05-06 Paul Jakma <paul@dishone.st>paul
* (general) extern and static'ification of functions in code and header. Cleanup any definitions with unspecified arguments. Add casts for callback assignments where the callback is defined, typically, as passing void *, but the function being assigned has some other pointer type defined as its argument, as gcc complains about casts from void * to X* via function arguments. Fix some old K&R style function argument definitions. Add noreturn gcc attribute to some functions, as appropriate. Add unused gcc attribute to some functions (eg ones meant to help while debugging) Add guard defines to headers which were missing them. * command.c: (install_node) add const qualifier, still doesnt shut up the warning though, because of the double pointer. (cmp_node) ditto * keychain.c: (key_str2time) Add GET_LONG_RANGE() macro, derived fromn vty.h ones to fix some of the (long) < 0 warnings. * thread.c: (various) use thread_empty (cpu_record_hash_key) should cast to uintptr_t, a stdint.h type * vty.h: Add VTY_GET_IPV4_ADDRESS and VTY_GET_IPV4_PREFIX so they removed from ospfd/ospf_vty.h * zebra.h: Move definition of ZEBRA_PORT to here, to remove dependence of lib on zebra/zserv.h
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.