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Reimplement Array#shift to be faster.

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2017-08-25 16:05:23 +09:00
parent cec53ff77e
commit 85a400e43d
1 changed files with 12 additions and 4 deletions
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src/array.c
+12 -4
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@@ -464,12 +464,20 @@ static mrb_value
mrb_ary_push_m(mrb_state *mrb, mrb_value self)
{
mrb_value *argv;
mrb_int len;
mrb_int len, len2, alen;
struct RArray *a;
mrb_get_args(mrb, "*!", &argv, &len);
while (len--) {
mrb_ary_push(mrb, self, *argv++);
mrb_get_args(mrb, "*!", &argv, &alen);
a = mrb_ary_ptr(self);
ary_modify(mrb, a);
len = ARY_LEN(a);
len2 = len + alen;
if (ARY_CAPA(a) < len2) {
ary_expand_capa(mrb, a, len2);
}
array_copy(ARY_PTR(a)+len, argv, alen);
ARY_SET_LEN(a, len2);
mrb_write_barrier(mrb, (struct RBasic*)a);
return self;
}