diff options
Diffstat (limited to 'ext/openssl/ossl.c')
-rw-r--r-- | ext/openssl/ossl.c | 66 |
1 files changed, 40 insertions, 26 deletions
diff --git a/ext/openssl/ossl.c b/ext/openssl/ossl.c index 6ec5e91c66..93ecc7d414 100644 --- a/ext/openssl/ossl.c +++ b/ext/openssl/ossl.c @@ -517,40 +517,53 @@ print_mem_leaks(VALUE self) /** * Stores locks needed for OpenSSL thread safety */ -static rb_nativethread_lock_t *ossl_locks; +struct CRYPTO_dynlock_value { + rb_nativethread_lock_t lock; + rb_nativethread_id_t owner; + size_t count; +}; static void -ossl_lock_unlock(int mode, rb_nativethread_lock_t *lock) +ossl_lock_init(struct CRYPTO_dynlock_value *l) { - if (mode & CRYPTO_LOCK) { - rb_nativethread_lock_lock(lock); - } else { - rb_nativethread_lock_unlock(lock); - } + rb_nativethread_lock_initialize(&l->lock); + l->count = 0; } static void -ossl_lock_callback(int mode, int type, const char *file, int line) +ossl_lock_unlock(int mode, struct CRYPTO_dynlock_value *l) { - ossl_lock_unlock(mode, &ossl_locks[type]); + if (mode & CRYPTO_LOCK) { + /* TODO: rb_nativethread_id_t is not necessarily compared with ==. */ + rb_nativethread_id_t tid = rb_nativethread_self(); + if (l->count && l->owner == tid) { + l->count++; + return; + } + rb_nativethread_lock_lock(&l->lock); + l->owner = tid; + l->count = 1; + } else { + if (!--l->count) + rb_nativethread_lock_unlock(&l->lock); + } } -struct CRYPTO_dynlock_value { - rb_nativethread_lock_t lock; -}; - static struct CRYPTO_dynlock_value * ossl_dyn_create_callback(const char *file, int line) { - struct CRYPTO_dynlock_value *dynlock = (struct CRYPTO_dynlock_value *)OPENSSL_malloc((int)sizeof(struct CRYPTO_dynlock_value)); - rb_nativethread_lock_initialize(&dynlock->lock); + /* Do not use xmalloc() here, since it may raise NoMemoryError */ + struct CRYPTO_dynlock_value *dynlock = + OPENSSL_malloc(sizeof(struct CRYPTO_dynlock_value)); + if (dynlock) + ossl_lock_init(dynlock); return dynlock; } static void ossl_dyn_lock_callback(int mode, struct CRYPTO_dynlock_value *l, const char *file, int line) { - ossl_lock_unlock(mode, &l->lock); + ossl_lock_unlock(mode, l); } static void @@ -566,21 +579,22 @@ static void ossl_threadid_func(CRYPTO_THREADID *id) CRYPTO_THREADID_set_pointer(id, (void *)rb_nativethread_self()); } +static struct CRYPTO_dynlock_value *ossl_locks; + +static void +ossl_lock_callback(int mode, int type, const char *file, int line) +{ + ossl_lock_unlock(mode, &ossl_locks[type]); +} + static void Init_ossl_locks(void) { int i; int num_locks = CRYPTO_num_locks(); - if ((unsigned)num_locks >= INT_MAX / (int)sizeof(VALUE)) { - rb_raise(rb_eRuntimeError, "CRYPTO_num_locks() is too big: %d", num_locks); - } - ossl_locks = (rb_nativethread_lock_t *) OPENSSL_malloc(num_locks * (int)sizeof(rb_nativethread_lock_t)); - if (!ossl_locks) { - rb_raise(rb_eNoMemError, "CRYPTO_num_locks() is too big: %d", num_locks); - } - for (i = 0; i < num_locks; i++) { - rb_nativethread_lock_initialize(&ossl_locks[i]); - } + ossl_locks = ALLOC_N(struct CRYPTO_dynlock_value, num_locks); + for (i = 0; i < num_locks; i++) + ossl_lock_init(&ossl_locks[i]); CRYPTO_THREADID_set_callback(ossl_threadid_func); CRYPTO_set_locking_callback(ossl_lock_callback); |