Yukihiro "Matz" Matsumoto 9d084b09b7 mruby-io: write literal strings directly via fd_write_buf ...

io_puts_str, io_puts_ary, and io_puts allocated a fresh mruby String
for every "\n", empty-array marker, "[...]" overflow marker, and
no-arg newline, only for fd_write to unpack it back to ptr/len.
The allocations also stayed on the GC arena across the recursive
walk, scaling pressure with array length.

Split fd_write into fd_write_buf (the EINTR-resilient write loop
over ptr/len) plus the existing mrb_value wrapper, and add a
FD_WRITE_LIT macro for compile-time-known literals. Replace the
four mrb_str_new_lit + fd_write pairs with FD_WRITE_LIT. The "" s
"" inside the macro enforces that the argument is a string literal
so sizeof(s) - 1 is the correct length.

Co-authored-by: Claude <noreply@anthropic.com>

2026-05-31 09:09:20 +09:00

..

file_test.c

mruby-io: use mrb_int consistently in IO HAL interface

2026-04-23 19:25:35 +09:00

file.c

Merge pull request #6580 from dearblue/File.basename

2026-05-08 11:41:36 +09:00

io.c

mruby-io: write literal strings directly via fd_write_buf

2026-05-31 09:09:20 +09:00

mruby_io_gem.c

mruby-io: call mrb_hal_io_init/final from gem_init/gem_final

2026-04-23 19:25:36 +09:00