本文整理汇总了Python中cryptography.hazmat.bindings._openssl.ffi.callback方法的典型用法代码示例。如果您正苦于以下问题：Python ffi.callback方法的具体用法？Python ffi.callback怎么用？Python ffi.callback使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类cryptography.hazmat.bindings._openssl.ffi的用法示例。
在下文中一共展示了ffi.callback方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: ffi_callback
# 需要导入模块: from cryptography.hazmat.bindings._openssl import ffi [as 别名]
# 或者: from cryptography.hazmat.bindings._openssl.ffi import callback [as 别名]
def ffi_callback(signature, name, **kwargs):
"""Callback dispatcher
The ffi_callback() dispatcher keeps callbacks compatible between dynamic
and static callbacks.
"""
def wrapper(func):
if lib.Cryptography_STATIC_CALLBACKS:
# def_extern() returns a decorator that sets the internal
# function pointer and returns the original function unmodified.
ffi.def_extern(name=name, **kwargs)(func)
callback = getattr(lib, name)
else:
# callback() wraps the function in a cdata function.
callback = ffi.callback(signature, **kwargs)(func)
return callback
return wrapper 示例2: init_static_locks
# 需要导入模块: from cryptography.hazmat.bindings._openssl import ffi [as 别名]
# 或者: from cryptography.hazmat.bindings._openssl.ffi import callback [as 别名]
def init_static_locks(cls):
with cls._lock_init_lock:
cls._ensure_ffi_initialized()
if not cls._lock_cb_handle:
wrapper = ffi_callback(
"void(int, int, const char *, int)",
name="Cryptography_locking_cb",
)
cls._lock_cb_handle = wrapper(cls._lock_cb)
# Use Python's implementation if available, importing _ssl triggers
# the setup for this.
__import__("_ssl")
if cls.lib.CRYPTO_get_locking_callback() != cls.ffi.NULL:
return
# If nothing else has setup a locking callback already, we set up
# our own
num_locks = cls.lib.CRYPTO_num_locks()
cls._locks = [threading.Lock() for n in range(num_locks)]
cls.lib.CRYPTO_set_locking_callback(cls._lock_cb_handle) 示例3: init_static_locks
# 需要导入模块: from cryptography.hazmat.bindings._openssl import ffi [as 别名]
# 或者: from cryptography.hazmat.bindings._openssl.ffi import callback [as 别名]
def init_static_locks(cls):
with cls._lock_init_lock:
cls._ensure_ffi_initialized()
if not cls._lock_cb_handle:
cls._lock_cb_handle = cls.ffi.callback(
"void(int, int, const char *, int)",
cls._lock_cb
)
# Use Python's implementation if available, importing _ssl triggers
# the setup for this.
__import__("_ssl")
if cls.lib.CRYPTO_get_locking_callback() != cls.ffi.NULL:
return
# If nothing else has setup a locking callback already, we set up
# our own
num_locks = cls.lib.CRYPTO_num_locks()
cls._locks = [threading.Lock() for n in range(num_locks)]
cls.lib.CRYPTO_set_locking_callback(cls._lock_cb_handle) 示例4: init_static_locks
# 需要导入模块: from cryptography.hazmat.bindings._openssl import ffi [as 别名]
# 或者: from cryptography.hazmat.bindings._openssl.ffi import callback [as 别名]
def init_static_locks(cls):
with cls._lock_init_lock:
cls._ensure_ffi_initialized()
# Use Python's implementation if available, importing _ssl triggers
# the setup for this.
__import__("_ssl")
if cls.lib.CRYPTO_get_locking_callback() != cls.ffi.NULL:
return
# If nothing else has setup a locking callback already, we set up
# our own
res = lib._setup_ssl_threads()
_openssl_assert(cls.lib, res == 1)