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Add new type of shared string: RSTR_FSHARED.

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`RSTR_FSHARED` use frozen strings as shared body instead of
`struct mrb_shared_string`. This reduces allocation from
literal strings.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2017-09-26 23:07:37 +09:00
parent 473b7d0efd
commit 7edbe428ca
6 changed files with 86 additions and 41 deletions
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include/mruby/object.h
+2
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@@ -22,6 +22,8 @@ struct RBasic {
};
#define mrb_basic_ptr(v) ((struct RBasic*)(mrb_ptr(v)))
/* flags bits >= 18 is reserved */
#define MRB_FLAG_IS_FROZEN (1 << 18)
#define MRB_FROZEN_P(o) ((o)->flags & MRB_FLAG_IS_FROZEN)
#define MRB_SET_FROZEN_FLAG(o) ((o)->flags |= MRB_FLAG_IS_FROZEN)
#define MRB_UNSET_FROZEN_FLAG(o) ((o)->flags &= ~MRB_FLAG_IS_FROZEN)