diff options
Diffstat (limited to 'crypto/async/arch/async_posix.c')
| -rw-r--r-- | crypto/async/arch/async_posix.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/crypto/async/arch/async_posix.c b/crypto/async/arch/async_posix.c index 0a1ffbf8d0..22be25f172 100644 --- a/crypto/async/arch/async_posix.c +++ b/crypto/async/arch/async_posix.c @@ -15,12 +15,26 @@ # include <stddef.h> # include <unistd.h> # include <openssl/err.h> +# include <openssl/crypto.h> #define STACKSIZE 32768 +static CRYPTO_RWLOCK *async_mem_lock; + static void *async_stack_alloc(size_t *num); static void async_stack_free(void *addr); +int async_local_init(void) +{ + async_mem_lock = CRYPTO_THREAD_lock_new(); + return async_mem_lock != NULL; +} + +void async_local_deinit(void) +{ + CRYPTO_THREAD_lock_free(async_mem_lock); +} + static int allow_customize = 1; static ASYNC_stack_alloc_fn stack_alloc_impl = async_stack_alloc; static ASYNC_stack_free_fn stack_free_impl = async_stack_free; @@ -39,8 +53,16 @@ int ASYNC_is_capable(void) int ASYNC_set_mem_functions(ASYNC_stack_alloc_fn alloc_fn, ASYNC_stack_free_fn free_fn) { - if (!allow_customize) + OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL); + + if (!CRYPTO_THREAD_write_lock(async_mem_lock)) + return 0; + if (!allow_customize) { + CRYPTO_THREAD_unlock(async_mem_lock); return 0; + } + CRYPTO_THREAD_unlock(async_mem_lock); + if (alloc_fn != NULL) stack_alloc_impl = alloc_fn; if (free_fn != NULL) @@ -83,8 +105,12 @@ int async_fibre_makecontext(async_fibre *fibre) * Disallow customisation after the first * stack is allocated. */ - if (allow_customize) + if (allow_customize) { + if (!CRYPTO_THREAD_write_lock(async_mem_lock)) + return 0; allow_customize = 0; + CRYPTO_THREAD_unlock(async_mem_lock); + } fibre->fibre.uc_stack.ss_sp = stack_alloc_impl(&num); if (fibre->fibre.uc_stack.ss_sp != NULL) { |