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write barrier doc update

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Yukihiro "Matz" Matsumoto
2014-08-05 11:29:08 +09:00
parent 920ce88b50
commit 58cb1a2e8b
1 changed files with 4 additions and 4 deletions
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src/gc.c
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@@ -63,10 +63,10 @@
== Write Barrier
mruby implementer and C extension library writer must write a write
barrier when writing a pointer to an object on object's field.
When writing a pointer to B object on A object's field,
two different write barrier are available:
mruby implementer and C extension library writer must insert a write
barrier when updating a reference from a field of an object.
When updating a reference from a field of object A to object B,
two different types of write barrier are available:
* mrb_field_write_barrier - target B object for a mark.
* mrb_write_barrier - target A object for a mark.