Project

General

Profile

Actions

Bug #11185

closed

[PATCH] openssl: use RB_GC_GUARD instead of volatile

Added by normalperson (Eric Wong) almost 9 years ago. Updated almost 9 years ago.

Status:
Closed
Target version:
-
[ruby-core:69371]

Description

From doc/extension.rdoc:

Using the RB_GC_GUARD macro is preferable to using the "volatile"
keyword in C. RB_GC_GUARD has the following advantages:

  1. the intent of the macro use is clear

  2. RB_GC_GUARD only affects its call site, "volatile" generates some
    extra code every time the variable is used, hurting optimization.

  3. "volatile" implementations may be buggy/inconsistent in some
    compilers and architectures. RB_GC_GUARD is customizable for broken
    systems/compilers without those without negatively affecting other
    systems.


Files

Actions

Also available in: Atom PDF

Like0
Like0Like0Like0