[Bug #21819] Data objects without members should also be frozen
[Bug #21440] Stop caching member list in frozen Data/Struct class
Don't pin named structs defined in Ruby
[Bug #20311]
`rb_define_class_under` assumes it's called from C and that the
reference might be held in a C global variable, so it adds the
class to the VM root.
In the case of `Struct.new('Name')` it's wasteful and make
the struct immortal.
Make Struct memory leak test faster
[Bug #20311]
It times out on some platform, so we can reduce iterations.
On my machine it completes in 250ms and RSS grows 8X.
SunC warns use of `NULL`, pointer to data as function pointers.
The benchmark results show that this feature has either a positive or no impact on performance. The memory usage is also mostly unchanged, except in hexapdf, where there is a decrease in RSS. -------------- ----------- ---------- --------- ----------- ---------- --------- -------------- ------------- bench master (ms) stddev (%) RSS (MiB) branch (ms) stddev (%) RSS (MiB) branch 1st itr master/branch activerecord 70.8 2.2 56.0 71.7 2.2 56.0 0.99 0.99 erubi_rails 20.5 13.6 94.7 20.5 14.3 94.2 0.93 1.00 hexapdf 2541.0 0.7 212.8 2544.4 0.7 203.4 1.00 1.00 liquid-c 65.6 0.3 38.9 65.3 0.3 38.9 1.01 1.01 liquid-compile 63.7 0.3 34.6 61.1 0.2 34.6 1.04 1.04 liquid-render 163.1 0.1 37.1 163.3 0.1 37.1 1.00 1.00 mail 139.3 0.1 50.5 137.0 0.1 50.1 0.99 1.02 psych-load 2065.7 0.1 36.9 2068.2 0.1 37.3 1.00 1.00 railsbench 2034.6 0.5 103.9 2031.9 0.5 103.8 1.02 1.00 ruby-lsp 65.3 3.1 89.8 66.2 3.0 89.7 1.01 0.99 sequel 73.2 1.0 40.3 73.4 1.0 40.3 1.00 1.00 -------------- ----------- ---------- --------- ----------- ---------- --------- -------------- -------------
Previously, named memberless Structs were allowed, but anonymous memberless Structs were not. Fixes [Bug #19416]