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null guard qdel, better log_info_line behavior

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gentle qdel refactor for readability
adds ref_name and ref_type to weakref
improves /proc/weakref initial test
corrects weakref GC hint
This commit is contained in:
spookerton
2022-10-15 15:06:00 +01:00
parent c57fc12be2
commit cb483875cd
4 changed files with 106 additions and 79 deletions
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code/controllers/subsystems/garbage.dm
+41 -39
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@@ -273,71 +273,73 @@ SUBSYSTEM_DEF(garbage)
// Should be treated as a replacement for the 'del' keyword.
// Datums passed to this will be given a chance to clean up references to allow the GC to collect them.
/proc/qdel(datum/D, force=FALSE)
if(!istype(D))
del(D)
/proc/qdel(datum/thing, force)
if (!thing)
return
var/datum/qdel_item/I = SSgarbage.items[D.type]
if (!I)
I = SSgarbage.items[D.type] = new /datum/qdel_item(D.type)
I.qdels++
if(isnull(D.gc_destroyed))
if(SEND_SIGNAL(D, COMSIG_PARENT_PREQDELETED, force)) // Give the components a chance to prevent their parent from being deleted
if (!istype(thing))
crash_with("qdel() can only handle /datum (sub)types, was passed: [log_info_line(thing)]")
del(thing)
return
var/datum/qdel_item/qdel_item = SSgarbage.items[thing.type]
if (!qdel_item)
qdel_item = new (thing.type)
SSgarbage.items[thing.type] = qdel_item
qdel_item.qdels++
if (isnull(thing.gc_destroyed))
if (SEND_SIGNAL(thing, COMSIG_PARENT_PREQDELETED, force)) // Give the components a chance to prevent their parent from being deleted
return
D.gc_destroyed = GC_CURRENTLY_BEING_QDELETED
thing.gc_destroyed = GC_CURRENTLY_BEING_QDELETED
var/start_time = world.time
var/start_tick = world.tick_usage
SEND_SIGNAL(D, COMSIG_PARENT_QDELETING, force) // Let the (remaining) components know about the result of Destroy
var/hint = D.Destroy(force) // Let our friend know they're about to get fucked up.
if(world.time != start_time)
I.slept_destroy++
SEND_SIGNAL(thing, COMSIG_PARENT_QDELETING, force) // Let the (remaining) components know about the result of Destroy
var/hint = thing.Destroy(force) // Let our friend know they're about to get fucked up.
if (world.time != start_time)
qdel_item.slept_destroy++
else
I.destroy_time += TICK_USAGE_TO_MS(start_tick)
if(!D)
qdel_item.destroy_time += TICK_USAGE_TO_MS(start_tick)
if (!thing)
return
switch(hint)
switch (hint)
if (QDEL_HINT_QUEUE) //qdel should queue the object for deletion.
SSgarbage.PreQueue(D)
SSgarbage.PreQueue(thing)
if (QDEL_HINT_IWILLGC)
D.gc_destroyed = world.time
thing.gc_destroyed = world.time
return
if (QDEL_HINT_LETMELIVE) //qdel should let the object live after calling destory.
if(!force)
D.gc_destroyed = null //clear the gc variable (important!)
thing.gc_destroyed = null //clear the gc variable (important!)
return
// Returning LETMELIVE after being told to force destroy
// indicates the objects Destroy() does not respect force
#ifdef TESTING
if(!I.no_respect_force)
crash_with("[D.type] has been force deleted, but is \
#ifdef TESTING
if(!qdel_item.no_respect_force)
crash_with("[thing.type] has been force deleted, but is \
returning an immortal QDEL_HINT, indicating it does \
not respect the force flag for qdel(). It has been \
placed in the queue, further instances of this type \
will also be queued.")
#endif
I.no_respect_force++
SSgarbage.PreQueue(D)
#endif
qdel_item.no_respect_force++
SSgarbage.PreQueue(thing)
if (QDEL_HINT_HARDDEL) //qdel should assume this object won't gc, and queue a hard delete using a hard reference to save time from the locate()
SSgarbage.HardQueue(D)
SSgarbage.HardQueue(thing)
if (QDEL_HINT_HARDDEL_NOW) //qdel should assume this object won't gc, and hard del it post haste.
SSgarbage.HardDelete(D)
SSgarbage.HardDelete(thing)
if (QDEL_HINT_FINDREFERENCE)//qdel will, if TESTING is enabled, display all references to this object, then queue the object for deletion.
SSgarbage.PreQueue(D)
SSgarbage.PreQueue(thing)
#ifdef TESTING
D.find_references()
thing.find_references()
#endif
else
#ifdef TESTING
if(!I.no_hint)
crash_with("[D.type] is not returning a qdel hint. It is being placed in the queue. Further instances of this type will also be queued.")
if (!qdel_item.no_hint)
crash_with("[thing.type] is not returning a qdel hint. It is being placed in the queue. Further instances of this type will also be queued.")
#endif
I.no_hint++
SSgarbage.PreQueue(D)
else if(D.gc_destroyed == GC_CURRENTLY_BEING_QDELETED)
CRASH("[D.type] destroy proc was called multiple times, likely due to a qdel loop in the Destroy logic")
qdel_item.no_hint++
SSgarbage.PreQueue(thing)
else if (thing.gc_destroyed == GC_CURRENTLY_BEING_QDELETED)
CRASH("[thing.type] destroy proc was called multiple times, likely due to a qdel loop in the Destroy logic")
#ifdef TESTING