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Return a value from atomic read on Windows.

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Use a read lock when reading using pthreads.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4517)
This commit is contained in:
Pauli 2017-10-11 09:47:54 +10:00
parent 19f05ebc3f
commit f49452c297
2 changed files with 2 additions and 2 deletions
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2
crypto/threads_pthread.c
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@ -177,7 +177,7 @@ int CRYPTO_atomic_read(int *val, int *ret, CRYPTO_RWLOCK *lock)
return 1;
}
# endif
if (!CRYPTO_THREAD_write_lock(lock))
if (!CRYPTO_THREAD_read_lock(lock))
return 0;
*ret = *val;

2
crypto/threads_win.c
View File

@ -135,7 +135,7 @@ int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
int CRYPTO_atomic_read(int *val, int *ret, CRYPTO_RWLOCK *lock)
{
InterlockedCompareExchange(val, 0, 0);
*ret = InterlockedCompareExchange(val, 0, 0);
return 1;
}