Thread#thread_variables

() -> ::Array[::Symbol]

thr.thread_variables → array

static VALUE
rb_thread_variables(VALUE thread)
{
    VALUE locals;
    VALUE ary;

    ary = rb_ary_new();
    if (LIKELY(!THREAD_LOCAL_STORAGE_INITIALISED_P(thread))) {
        return ary;
    }
    locals = rb_thread_local_storage(thread);
    rb_hash_foreach(locals, keys_i, ary);

    return ary;
}

Returns an array of the names of the thread-local variables (as Symbols).

Example

thr = Thread.new do
  Thread.current.thread_variable_set(:cat, 'meow')
  Thread.current.thread_variable_set("dog", 'woof')
end
thr.join               #=> #<Thread:0x401b3f10 dead>
thr.thread_variables   #=> [:dog, :cat]

Note that these are not fiber local variables. Please see Thread#[] and Thread#thread_variable_get for more details.

See also #thread_variable_get #thread_variable_set #thread_variable? #to_s also in 4.1 · 4.0 · 3.3 · 3.2 · 3.1 · 3.0

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