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COROUTINE_MANAGEMENT@3e2ea1e7b2e8 (annotated)

COROUTINE_MANAGEMENT

Fri, 31 Aug 2007 09:34:09 -0400

author

Thomas Harning Jr <harningt@gmail.com>

date

Fri, 31 Aug 2007 09:34:09 -0400

changeset 13

3e2ea1e7b2e8

permissions

-rw-r--r--

Reformed project layout from 'luaevent/*' -> '*'

13 3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	1	Due to the issue w/ self-resuming threads and crashing out threads,
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	2	a management system needs to be in place.
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	3
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	4	Example thread system:
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	5
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	6	MAIN
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	7	EVENT_LOOP --------running---
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	8	WAITING ON READ
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	9	WAITING ON WRITE
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	10	WAITING ON CONNECT
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	11
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	12
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	13	Since main and the other 'waiting' threads are yielded, it is unsafe to call things arbitrarily on them
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	14	or resume them from themselves...
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	15	However the EVENT_LOOP one is running and thus can execute the callbacks (which can resume the threads)
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	16	Each of the 'waiting' events are attached to an event and contain a pointer, this pointer can be setup to point
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	17	to a per event_base item which will be updated w/ the lua_State of whatever calls EVENT_LOOP...
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	18	this will guarantee that the thread will be resumed from the currently running EVENT_LOOP
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	19
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	20
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	21	Other system that's more complicated and less likely:
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	22
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	23	MAIN
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	24	EVENT_LOOP a -----running---
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	25
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	26	WAITING ON READ a
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	27	WAITING ON WRITE a
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	28
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	29	EVENT_LOOP b ----yielded
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	30	WAITING ON READ b
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	31
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	32
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	33	Since there can only be one event_loop running per event_base, you do not have to worry about
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	34	cross-pollination of the different waits...
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	35
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	36	NOTES:
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	37	If the event_loop thread goes away... then the waiting coroutines will have no way to get back...
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	38	though in this case, they are dead in the water anyways.. until a new event_loop starts...
3e2ea1e7b2e8 Reformed project layout from 'luaevent/*' -> '*' Thomas Harning Jr <harningt@gmail.com> parents: diff changeset	39	in which case the lua_State references has been updated...