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PATH: opt / alt / python38 / lib64 / python3.8 / site-packages / aiohttp

from cpython cimport PyBytes_AsString

#from cpython cimport PyByteArray_AsString # cython still not exports that
cdef extern from "Python.h":
    char* PyByteArray_AsString(bytearray ba) except NULL

from libc.stdint cimport uint32_t, uint64_t, uintmax_t

def _websocket_mask_cython(object mask, object data):
    """Note, this function mutates its `data` argument
    """
    cdef:
        Py_ssize_t data_len, i
        # bit operations on signed integers are implementation-specific
        unsigned char * in_buf
        const unsigned char * mask_buf
        uint32_t uint32_msk
        uint64_t uint64_msk

assert len(mask) == 4

if not isinstance(mask, bytes):
        mask = bytes(mask)

if isinstance(data, bytearray):
        data = <bytearray>data
    else:
        data = bytearray(data)

data_len = len(data)
    in_buf = <unsigned char*>PyByteArray_AsString(data)
    mask_buf = <const unsigned char*>PyBytes_AsString(mask)
    uint32_msk = (<uint32_t*>mask_buf)[0]

# TODO: align in_data ptr to achieve even faster speeds
    # does it need in python ?! malloc() always aligns to sizeof(long) bytes

if sizeof(size_t) >= 8:
        uint64_msk = uint32_msk
        uint64_msk = (uint64_msk << 32) | uint32_msk

while data_len >= 8:
            (<uint64_t*>in_buf)[0] ^= uint64_msk
            in_buf += 8
            data_len -= 8

while data_len >= 4:
        (<uint32_t*>in_buf)[0] ^= uint32_msk
        in_buf += 4
        data_len -= 4

for i in range(0, data_len):
        in_buf[i] ^= mask_buf[i]

[-] client_ws.py [edit]
[-] web_runner.py [edit]
[-] web.py [edit]
[-] web_request.py [edit]
[-] tcp_helpers.py [edit]
[-] web_urldispatcher.py [edit]
[-] client_proto.py [edit]
[-] _helpers.cpython-38-x86_64-linux-gnu.so [edit]
[-] web_ws.py [edit]
[-] web_response.py [edit]
[+] ..
[-] _find_header.pxd [edit]
[-] web_protocol.py [edit]
[-] _http_parser.pyx [edit]
[-] hdrs.py [edit]
[-] helpers.py [edit]
[-] multipart.py [edit]
[-] http.py [edit]
[-] _websocket.c [edit]
[-] _headers.pxi [edit]
[-] signals.pyi [edit]
[-] _http_parser.c [edit]
[-] client_exceptions.py [edit]
[-] _websocket.pyx [edit]
[-] http_writer.py [edit]
[-] _http_writer.cpython-38-x86_64-linux-gnu.so [edit]
[-] signals.py [edit]
[-] worker.py [edit]
[-] web_exceptions.py [edit]
[-] web_log.py [edit]
[-] client.py [edit]
[-] web_server.py [edit]
[-] py.typed [edit]
[-] abc.py [edit]
[-] payload.py [edit]
[-] formdata.py [edit]
[-] web_middlewares.py [edit]
[-] streams.py [edit]
[-] pytest_plugin.py [edit]
[-] frozenlist.py [edit]
[+] __pycache__
[-] _helpers.pyx [edit]
[-] web_app.py [edit]
[-] cookiejar.py [edit]
[-] http_exceptions.py [edit]
[-] payload_streamer.py [edit]
[-] log.py [edit]
[-] _helpers.c [edit]
[-] test_utils.py [edit]
[-] _find_header.c [edit]
[-] http_parser.py [edit]
[-] web_fileresponse.py [edit]
[-] locks.py [edit]
[-] _http_parser.cpython-38-x86_64-linux-gnu.so [edit]
[-] _http_writer.pyx [edit]
[-] tracing.py [edit]
[-] frozenlist.pyi [edit]
[-] resolver.py [edit]
[-] _helpers.pyi [edit]
[-] __init__.py [edit]
[-] _frozenlist.c [edit]
[-] _frozenlist.pyx [edit]
[+] .hash
[-] _cparser.pxd [edit]
[-] base_protocol.py [edit]
[-] web_routedef.py [edit]
[-] connector.py [edit]
[-] _frozenlist.cpython-38-x86_64-linux-gnu.so [edit]
[-] _find_header.h [edit]
[-] typedefs.py [edit]
[-] _websocket.cpython-38-x86_64-linux-gnu.so [edit]
[-] http_websocket.py [edit]
[-] _http_writer.c [edit]
[-] client_reqrep.py [edit]