From 319afed20fba8f9b44611d16e4930260f7b56b86 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Mon, 19 Oct 2020 16:47:32 +0900
Subject: Use language TLS specifier if it is possible.

To access TLS, it is faster to use language TLS specifier instead
of using pthread_get/setspecific functions.

Original proposal is: Use native thread locals. #3665
---
 vm.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'vm.c')

diff --git a/vm.c b/vm.c
index 77a0659dd1..879814a14b 100644
--- a/vm.c
+++ b/vm.c
@@ -379,7 +379,26 @@ VALUE rb_block_param_proxy;
 #define ruby_vm_redefined_flag GET_VM()->redefined_flag
 VALUE ruby_vm_const_missing_count = 0;
 rb_vm_t *ruby_current_vm_ptr = NULL;
+
+#ifdef RB_THREAD_LOCAL_SPECIFIER
+RB_THREAD_LOCAL_SPECIFIER rb_execution_context_t *ruby_current_ec;
+
+#ifdef __APPLE__
+  rb_execution_context_t *
+  rb_current_ec(void)
+  {
+      return ruby_current_ec;
+  }
+  void
+  rb_current_ec_set(rb_execution_context_t *ec)
+  {
+      ruby_current_ec = ec;
+  }
+#endif
+
+#else
 native_tls_key_t ruby_current_ec_key;
+#endif
 
 rb_event_flag_t ruby_vm_event_flags;
 rb_event_flag_t ruby_vm_event_enabled_global_flags;
-- 
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