diff options
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/mesa-sha1.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/src/util/mesa-sha1.c b/src/util/mesa-sha1.c index faa1c87..ca6b89b 100644 --- a/src/util/mesa-sha1.c +++ b/src/util/mesa-sha1.c @@ -175,21 +175,24 @@ _mesa_sha1_final(struct mesa_sha1 *ctx, unsigned char result[20]) #elif defined(HAVE_SHA1_IN_LIBGCRYPT) /* Use libgcrypt for SHA1 */ #include <gcrypt.h> +#include "c11/threads.h" + +static void _mesa_libgcrypt_init(void) +{ + if (!gcry_check_version(NULL)) + return NULL; + gcry_control(GCRYCTL_DISABLE_SECMEM, 0); + gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); +} struct mesa_sha1 * _mesa_sha1_init(void) { - static int init; + static once_flag flag = ONCE_FLAG_INIT; gcry_md_hd_t h; gcry_error_t err; - if (!init) { - if (!gcry_check_version(NULL)) - return NULL; - gcry_control(GCRYCTL_DISABLE_SECMEM, 0); - gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0); - init = 1; - } + call_once(&flag, _mesa_libgcrypt_init); err = gcry_md_open(&h, GCRY_MD_SHA1, 0); if (err) |