Revert "Introduce Fiber Scheduler `blocking_region` hook. (#11963)" (#12013)

This reverts some of commit 87fb44dff6409a19d12052cf0fc07ba80a4c45ac.

We will rename and propose a slightly different interface.

1 files changed, 0 insertions, 63 deletions

diff --git a/scheduler.c b/scheduler.c
index 0d51a0d951..3159635dba 100644
--- a/scheduler.c
+++ b/scheduler.c
@@ -13,9 +13,6 @@
 #include "ruby/io.h"
 #include "ruby/io/buffer.h"
 
-#include "ruby/thread.h"
-
-// For `ruby_thread_has_gvl_p`.
 #include "internal/thread.h"
 
 static ID id_close;
@@ -36,8 +33,6 @@ static ID id_io_close;
 
 static ID id_address_resolve;
 
-static ID id_blocking_region;
-
 static ID id_fiber_schedule;
 
 /*
@@ -114,8 +109,6 @@ Init_Fiber_Scheduler(void)
 
     id_address_resolve = rb_intern_const("address_resolve");
 
-    id_blocking_region = rb_intern_const("blocking_region");
-
     id_fiber_schedule = rb_intern_const("fiber");
 
 #if 0 /* for RDoc */
@@ -700,62 +693,6 @@ rb_fiber_scheduler_address_resolve(VALUE scheduler, VALUE hostname)
     return rb_check_funcall(scheduler, id_address_resolve, 1, arguments);
 }
 
-struct rb_blocking_region_arguments {
-    void *(*function)(void *);
-    void *data;
-    rb_unblock_function_t *unblock_function;
-    void *data2;
-    int flags;
-
-    struct rb_fiber_scheduler_blocking_region_state *state;
-};
-
-static VALUE
-rb_fiber_scheduler_blocking_region_proc(RB_BLOCK_CALL_FUNC_ARGLIST(value, _arguments))
-{
-    struct rb_blocking_region_arguments *arguments = (struct rb_blocking_region_arguments*)_arguments;
-
-    if (arguments->state == NULL) {
-        rb_raise(rb_eRuntimeError, "Blocking function was already invoked!");
-    }
-
-    arguments->state->result = rb_nogvl(arguments->function, arguments->data, arguments->unblock_function, arguments->data2, arguments->flags);
-    arguments->state->saved_errno = rb_errno();
-
-    // Make sure it's only invoked once.
-    arguments->state = NULL;
-
-    return Qnil;
-}
-
-/*
- *  Document-method: Fiber::Scheduler#blocking_region
- *  call-seq: blocking_region(work)
- *
- *  Invoked by Ruby's core methods to run a blocking operation in a non-blocking way.
- *
- *  Minimal suggested implementation is:
- *
- *     def blocking_region(work)
- *       Thread.new(&work).join
- *     end
- */
-VALUE rb_fiber_scheduler_blocking_region(VALUE scheduler, void* (*function)(void *), void *data, rb_unblock_function_t *unblock_function, void *data2, int flags, struct rb_fiber_scheduler_blocking_region_state *state)
-{
-    struct rb_blocking_region_arguments arguments = {
-        .function = function,
-        .data = data,
-        .unblock_function = unblock_function,
-        .data2 = data2,
-        .flags = flags,
-        .state = state
-    };
-
-    VALUE proc = rb_proc_new(rb_fiber_scheduler_blocking_region_proc, (VALUE)&arguments);
-
-    return rb_check_funcall(scheduler, id_blocking_region, 1, &proc);
-}
-
 /*
  *  Document-method: Fiber::Scheduler#fiber
  *  call-seq: fiber(&block)