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| author | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2016-02-09 09:38:17 +0000 |
|---|---|---|
| committer | moneromooo-monero <moneromooo-monero@users.noreply.github.com> | 2016-02-09 09:38:17 +0000 |
| commit | c7e6b7739565951b06be42997bd97415faf35d4e (patch) | |
| tree | eb21f60f604336985d8360f1d365c8fa679f549a /src/crypto | |
| parent | crypto: use software AES based on the MONERO_USE_SOFTWARE_AES env var (diff) | |
| download | monero-c7e6b7739565951b06be42997bd97415faf35d4e.tar.xz | |
crypto: only check MONERO_USE_SOFTWARE_AES once
Diffstat (limited to 'src/crypto')
| -rw-r--r-- | src/crypto/slow-hash.c | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/src/crypto/slow-hash.c b/src/crypto/slow-hash.c index faaf127ce..4efa8af6c 100644 --- a/src/crypto/slow-hash.c +++ b/src/crypto/slow-hash.c @@ -189,12 +189,22 @@ STATIC INLINE void xor_blocks(uint8_t *a, const uint8_t *b) STATIC INLINE int force_software_aes(void) { + static int use = -1; + + if (use != -1) + return use; + const char *env = getenv("MONERO_USE_SOFTWARE_AES"); - if (!env) - return 0; - if (!strcmp(env, "0") || !strcmp(env, "no")) - return 0; - return 1; + if (!env) { + use = 0; + } + else if (!strcmp(env, "0") || !strcmp(env, "no")) { + use = 0; + } + else { + use = 1; + } + return use; } STATIC INLINE int check_aes_hw(void) |