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Disable atomic refcounts with no-threads 

This is needed for building with '-march=i386 no-threads', on platforms
where libatomic is not available (djgpp, specifically).  The
implementation now falls back to 'CRYPTO_atomic_add()', which performs
plain lock-free addition in a 'no-threads' build.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19751)
(cherry picked from commit b484c6268c)
This commit is contained in:
J.W. Jagersma 2022-11-22 19:20:53 +01:00 committed by Pauli
parent b175e870e9
commit cdcb9c76bd
1 changed files with 1 additions and 1 deletions
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2
include/internal/refcount.h
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@ -13,7 +13,7 @@
# include <openssl/e_os2.h> # include <openssl/e_os2.h>
# include <openssl/trace.h> # include <openssl/trace.h>
# ifndef OPENSSL_DEV_NO_ATOMICS # if defined(OPENSSL_THREADS) && !defined(OPENSSL_DEV_NO_ATOMICS)
# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L \ # if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L \
&& !defined(__STDC_NO_ATOMICS__) && !defined(__STDC_NO_ATOMICS__)
# include <stdatomic.h> # include <stdatomic.h>