diff options
Diffstat (limited to 'mjit.c')
| -rw-r--r-- | mjit.c | 23 |
1 files changed, 18 insertions, 5 deletions
@@ -1779,6 +1779,10 @@ mjit_setup_options(const char *s, struct mjit_options *mjit_opt) else if (opt_match_arg(s, l, "min-calls")) { mjit_opt->min_calls = atoi(s + 1); } + // --mjit=pause is an undocumented feature for experiments + else if (opt_match_noarg(s, l, "pause")) { + mjit_opt->pause = true; + } else { rb_raise(rb_eRuntimeError, "invalid MJIT option `%s' (--help will show valid MJIT options)", s); @@ -1870,11 +1874,15 @@ mjit_init(const struct mjit_options *opts) // rb_fiber_init_mjit_cont again with mjit_enabled=true to set the root_fiber's mjit_cont. rb_fiber_init_mjit_cont(GET_EC()->fiber_ptr); - // TODO: Consider running C compiler asynchronously - make_pch(); + // If --mjit=pause is given, lazily start MJIT when RubyVM::MJIT.resume is called. + // You can use it to control MJIT warmup, or to customize the JIT implementation. + if (!mjit_opts.pause) { + // TODO: Consider running C compiler asynchronously + make_pch(); - // Enable MJIT compilation - start_worker(); + // Enable MJIT compilation + start_worker(); + } } static void @@ -1920,6 +1928,11 @@ mjit_resume(void) return Qfalse; } + // Lazily prepare PCH when --mjit=pause is given + if (pch_status == PCH_NOT_READY) { + make_pch(); + } + if (!start_worker()) { rb_raise(rb_eRuntimeError, "Failed to resume MJIT worker"); } @@ -1993,7 +2006,7 @@ mjit_finish(bool close_handle_p) mjit_dump_total_calls(); #endif - if (!mjit_opts.save_temps && getpid() == pch_owner_pid) + if (!mjit_opts.save_temps && getpid() == pch_owner_pid && pch_status != PCH_NOT_READY) remove_file(pch_file); xfree(header_file); header_file = NULL; |