mirror of
https://github.com/openssl/openssl.git
synced 2026-05-07 20:12:39 +00:00
Bob Beck
ad5277a4b1
Reviewed-by: Tomas Mraz <tomas@openssl.foundation> Reviewed-by: Nikola Pajkovsky <nikolap@openssl.org> Reviewed-by: Norbert Pocs <norbertp@openssl.org> MergeDate: Wed May 6 11:35:48 2026 (Merged from https://github.com/openssl/openssl/pull/31001)
96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
/*
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* Copyright 2025-2026 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#ifndef _CRYPTO_THREADS_COMMON_H_
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#define _CRYPTO_THREADS_COMMON_H_
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#include <openssl/types.h>
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#if defined(__clang__) && defined(__has_feature)
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#if __has_feature(thread_sanitizer)
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#define __SANITIZE_THREAD__
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#endif
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#endif
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#if defined(__SANITIZE_THREAD__)
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#include <sanitizer/tsan_interface.h>
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extern void AnnotateBenignRaceSized(const char *f, int l,
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const volatile void *mem, unsigned int size, const char *desc);
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#define TSAN_BENIGN(x, desc) \
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AnnotateBenignRaceSized(__FILE__, __LINE__, &(x), sizeof(x), desc);
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#else
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#define TSAN_BENIGN(x, desc)
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#endif
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typedef enum {
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CRYPTO_THREAD_LOCAL_RCU_KEY = 0,
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CRYPTO_THREAD_LOCAL_DRBG_PRIV_KEY,
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CRYPTO_THREAD_LOCAL_DRBG_PUB_KEY,
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CRYPTO_THREAD_LOCAL_ERR_KEY,
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CRYPTO_THREAD_LOCAL_ASYNC_CTX_KEY,
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CRYPTO_THREAD_LOCAL_ASYNC_POOL_KEY,
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CRYPTO_THREAD_LOCAL_TEVENT_KEY,
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CRYPTO_THREAD_LOCAL_TANDEM_ID_KEY,
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CRYPTO_THREAD_LOCAL_FIPS_DEFERRED_KEY,
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CRYPTO_THREAD_LOCAL_KEY_MAX
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} CRYPTO_THREAD_LOCAL_KEY_ID;
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#define CRYPTO_THREAD_NO_CONTEXT (void *)1
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void *CRYPTO_THREAD_get_local_ex(CRYPTO_THREAD_LOCAL_KEY_ID id,
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OSSL_LIB_CTX *ctx);
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int CRYPTO_THREAD_set_local_ex(CRYPTO_THREAD_LOCAL_KEY_ID id,
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OSSL_LIB_CTX *ctx, void *data);
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void CRYPTO_THREAD_clean_local(void);
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/* Do atomics work? */
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#if defined(__apple_build_version__) && __apple_build_version__ < 6000000
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/*
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* OS/X 10.7 and 10.8 had a weird version of clang which has __ATOMIC_ACQUIRE and
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* __ATOMIC_ACQ_REL but which expects only one parameter for __atomic_is_lock_free()
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* rather than two which has signature __atomic_is_lock_free(sizeof(_Atomic(T))).
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* All of this makes impossible to use __atomic_is_lock_free here.
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*
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* See: https://github.com/llvm/llvm-project/commit/a4c2602b714e6c6edb98164550a5ae829b2de760
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*/
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#define BROKEN_CLANG_ATOMICS
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#endif
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/*
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* VC++ 2008 or earlier x86 compilers do not have an inline implementation
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* of InterlockedOr64 for 32bit and will fail to run on Windows XP 32bit.
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* https://docs.microsoft.com/en-us/cpp/intrinsics/interlockedor-intrinsic-functions#requirements
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* To work around this problem, we implement a manual locking mechanism for
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* only VC++ 2008 or earlier x86 compilers.
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*/
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#if defined(_MSC_VER)
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#if (!defined(_M_IX86) || _MSC_VER > 1600)
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#define OSSL_USE_INTERLOCKEDOR64
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#endif
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#elif defined(__MINGW64__)
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#define OSSL_USE_INTERLOCKEDOR64
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#endif
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#if defined(__GNUC__) && defined(__ATOMIC_ACQUIRE) && !defined(BROKEN_CLANG_ATOMICS) \
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&& !defined(USE_ATOMIC_FALLBACKS)
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#define OSSL_USE_GCC_ATOMICS
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#elif defined(__sun) && (defined(__SunOS_5_10) || defined(__SunOS_5_11))
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#define OSSL_USE_SOLARIS_ATOMICS
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#endif
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/* Allow us to know if atomics will be implemented with a fallback lock or not. */
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#if defined(OSSL_USE_GCC_ATOMICS) || defined(OSSL_USE_SOLARIS_ATOMICS) || defined(USE_INTERLOCKEDOR64)
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#define OSSL_ATOMICS_LOCKLESS
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#endif
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#endif
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