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gh-121423: Improve import time of `socket` (#121424) 

Improve import time of `socket` by writing `socket.errorTab`
as a constant and lazy import modules.

Co-authored-by: Pieter Eendebak <pieter.eendebak@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
This commit is contained in:
Wulian 2024-09-04 18:00:37 +08:00 committed by GitHub
parent 91ff700de2
commit 7bd964dbbe
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GPG Key ID: B5690EEEBB952194
2 changed files with 109 additions and 101 deletions
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208
Lib/socket.py
View File

@ -52,7 +52,9 @@ the setsockopt() and getsockopt() methods.
import _socket
from _socket import *
import os, sys, io, selectors
import io
import os
import sys
from enum import IntEnum, IntFlag
try:
@ -110,102 +112,103 @@ def _intenum_converter(value, enum_klass):
# WSA error codes
if sys.platform.lower().startswith("win"):
errorTab = {}
errorTab[6] = "Specified event object handle is invalid."
errorTab[8] = "Insufficient memory available."
errorTab[87] = "One or more parameters are invalid."
errorTab[995] = "Overlapped operation aborted."
errorTab[996] = "Overlapped I/O event object not in signaled state."
errorTab[997] = "Overlapped operation will complete later."
errorTab[10004] = "The operation was interrupted."
errorTab[10009] = "A bad file handle was passed."
errorTab[10013] = "Permission denied."
errorTab[10014] = "A fault occurred on the network??" # WSAEFAULT
errorTab[10022] = "An invalid operation was attempted."
errorTab[10024] = "Too many open files."
errorTab[10035] = "The socket operation would block."
errorTab[10036] = "A blocking operation is already in progress."
errorTab[10037] = "Operation already in progress."
errorTab[10038] = "Socket operation on nonsocket."
errorTab[10039] = "Destination address required."
errorTab[10040] = "Message too long."
errorTab[10041] = "Protocol wrong type for socket."
errorTab[10042] = "Bad protocol option."
errorTab[10043] = "Protocol not supported."
errorTab[10044] = "Socket type not supported."
errorTab[10045] = "Operation not supported."
errorTab[10046] = "Protocol family not supported."
errorTab[10047] = "Address family not supported by protocol family."
errorTab[10048] = "The network address is in use."
errorTab[10049] = "Cannot assign requested address."
errorTab[10050] = "Network is down."
errorTab[10051] = "Network is unreachable."
errorTab[10052] = "Network dropped connection on reset."
errorTab[10053] = "Software caused connection abort."
errorTab[10054] = "The connection has been reset."
errorTab[10055] = "No buffer space available."
errorTab[10056] = "Socket is already connected."
errorTab[10057] = "Socket is not connected."
errorTab[10058] = "The network has been shut down."
errorTab[10059] = "Too many references."
errorTab[10060] = "The operation timed out."
errorTab[10061] = "Connection refused."
errorTab[10062] = "Cannot translate name."
errorTab[10063] = "The name is too long."
errorTab[10064] = "The host is down."
errorTab[10065] = "The host is unreachable."
errorTab[10066] = "Directory not empty."
errorTab[10067] = "Too many processes."
errorTab[10068] = "User quota exceeded."
errorTab[10069] = "Disk quota exceeded."
errorTab[10070] = "Stale file handle reference."
errorTab[10071] = "Item is remote."
errorTab[10091] = "Network subsystem is unavailable."
errorTab[10092] = "Winsock.dll version out of range."
errorTab[10093] = "Successful WSAStartup not yet performed."
errorTab[10101] = "Graceful shutdown in progress."
errorTab[10102] = "No more results from WSALookupServiceNext."
errorTab[10103] = "Call has been canceled."
errorTab[10104] = "Procedure call table is invalid."
errorTab[10105] = "Service provider is invalid."
errorTab[10106] = "Service provider failed to initialize."
errorTab[10107] = "System call failure."
errorTab[10108] = "Service not found."
errorTab[10109] = "Class type not found."
errorTab[10110] = "No more results from WSALookupServiceNext."
errorTab[10111] = "Call was canceled."
errorTab[10112] = "Database query was refused."
errorTab[11001] = "Host not found."
errorTab[11002] = "Nonauthoritative host not found."
errorTab[11003] = "This is a nonrecoverable error."
errorTab[11004] = "Valid name, no data record requested type."
errorTab[11005] = "QoS receivers."
errorTab[11006] = "QoS senders."
errorTab[11007] = "No QoS senders."
errorTab[11008] = "QoS no receivers."
errorTab[11009] = "QoS request confirmed."
errorTab[11010] = "QoS admission error."
errorTab[11011] = "QoS policy failure."
errorTab[11012] = "QoS bad style."
errorTab[11013] = "QoS bad object."
errorTab[11014] = "QoS traffic control error."
errorTab[11015] = "QoS generic error."
errorTab[11016] = "QoS service type error."
errorTab[11017] = "QoS flowspec error."
errorTab[11018] = "Invalid QoS provider buffer."
errorTab[11019] = "Invalid QoS filter style."
errorTab[11020] = "Invalid QoS filter style."
errorTab[11021] = "Incorrect QoS filter count."
errorTab[11022] = "Invalid QoS object length."
errorTab[11023] = "Incorrect QoS flow count."
errorTab[11024] = "Unrecognized QoS object."
errorTab[11025] = "Invalid QoS policy object."
errorTab[11026] = "Invalid QoS flow descriptor."
errorTab[11027] = "Invalid QoS provider-specific flowspec."
errorTab[11028] = "Invalid QoS provider-specific filterspec."
errorTab[11029] = "Invalid QoS shape discard mode object."
errorTab[11030] = "Invalid QoS shaping rate object."
errorTab[11031] = "Reserved policy QoS element type."
errorTab = {
6: "Specified event object handle is invalid.",
8: "Insufficient memory available.",
87: "One or more parameters are invalid.",
995: "Overlapped operation aborted.",
996: "Overlapped I/O event object not in signaled state.",
997: "Overlapped operation will complete later.",
10004: "The operation was interrupted.",
10009: "A bad file handle was passed.",
10013: "Permission denied.",
10014: "A fault occurred on the network??",
10022: "An invalid operation was attempted.",
10024: "Too many open files.",
10035: "The socket operation would block.",
10036: "A blocking operation is already in progress.",
10037: "Operation already in progress.",
10038: "Socket operation on nonsocket.",
10039: "Destination address required.",
10040: "Message too long.",
10041: "Protocol wrong type for socket.",
10042: "Bad protocol option.",
10043: "Protocol not supported.",
10044: "Socket type not supported.",
10045: "Operation not supported.",
10046: "Protocol family not supported.",
10047: "Address family not supported by protocol family.",
10048: "The network address is in use.",
10049: "Cannot assign requested address.",
10050: "Network is down.",
10051: "Network is unreachable.",
10052: "Network dropped connection on reset.",
10053: "Software caused connection abort.",
10054: "The connection has been reset.",
10055: "No buffer space available.",
10056: "Socket is already connected.",
10057: "Socket is not connected.",
10058: "The network has been shut down.",
10059: "Too many references.",
10060: "The operation timed out.",
10061: "Connection refused.",
10062: "Cannot translate name.",
10063: "The name is too long.",
10064: "The host is down.",
10065: "The host is unreachable.",
10066: "Directory not empty.",
10067: "Too many processes.",
10068: "User quota exceeded.",
10069: "Disk quota exceeded.",
10070: "Stale file handle reference.",
10071: "Item is remote.",
10091: "Network subsystem is unavailable.",
10092: "Winsock.dll version out of range.",
10093: "Successful WSAStartup not yet performed.",
10101: "Graceful shutdown in progress.",
10102: "No more results from WSALookupServiceNext.",
10103: "Call has been canceled.",
10104: "Procedure call table is invalid.",
10105: "Service provider is invalid.",
10106: "Service provider failed to initialize.",
10107: "System call failure.",
10108: "Service not found.",
10109: "Class type not found.",
10110: "No more results from WSALookupServiceNext.",
10111: "Call was canceled.",
10112: "Database query was refused.",
11001: "Host not found.",
11002: "Nonauthoritative host not found.",
11003: "This is a nonrecoverable error.",
11004: "Valid name, no data record requested type.",
11005: "QoS receivers.",
11006: "QoS senders.",
11007: "No QoS senders.",
11008: "QoS no receivers.",
11009: "QoS request confirmed.",
11010: "QoS admission error.",
11011: "QoS policy failure.",
11012: "QoS bad style.",
11013: "QoS bad object.",
11014: "QoS traffic control error.",
11015: "QoS generic error.",
11016: "QoS service type error.",
11017: "QoS flowspec error.",
11018: "Invalid QoS provider buffer.",
11019: "Invalid QoS filter style.",
11020: "Invalid QoS filter style.",
11021: "Incorrect QoS filter count.",
11022: "Invalid QoS object length.",
11023: "Incorrect QoS flow count.",
11024: "Unrecognized QoS object.",
11025: "Invalid QoS policy object.",
11026: "Invalid QoS flow descriptor.",
11027: "Invalid QoS provider-specific flowspec.",
11028: "Invalid QoS provider-specific filterspec.",
11029: "Invalid QoS shape discard mode object.",
11030: "Invalid QoS shaping rate object.",
11031: "Reserved policy QoS element type."
}
__all__.append("errorTab")
@ -348,6 +351,9 @@ class socket(_socket.socket):
if hasattr(os, 'sendfile'):
def _sendfile_use_sendfile(self, file, offset=0, count=None):
# Lazy import to improve module import time
import selectors
self._check_sendfile_params(file, offset, count)
sockno = self.fileno()
try:
@ -549,20 +555,18 @@ def fromfd(fd, family, type, proto=0):
return socket(family, type, proto, nfd)
if hasattr(_socket.socket, "sendmsg"):
import array
def send_fds(sock, buffers, fds, flags=0, address=None):
""" send_fds(sock, buffers, fds[, flags[, address]]) -> integer
Send the list of file descriptors fds over an AF_UNIX socket.
"""
import array
return sock.sendmsg(buffers, [(_socket.SOL_SOCKET,
_socket.SCM_RIGHTS, array.array("i", fds))])
__all__.append("send_fds")
if hasattr(_socket.socket, "recvmsg"):
import array
def recv_fds(sock, bufsize, maxfds, flags=0):
""" recv_fds(sock, bufsize, maxfds[, flags]) -> (data, list of file
descriptors, msg_flags, address)
@ -570,6 +574,8 @@ if hasattr(_socket.socket, "recvmsg"):
Receive up to maxfds file descriptors returning the message
data and a list containing the descriptors.
"""
import array
# Array of ints
fds = array.array("i")
msg, ancdata, flags, addr = sock.recvmsg(bufsize,

2
Misc/NEWS.d/next/Library/2024-07-06-12-37-10.gh-issue-121423.vnxrl4.rst Normal file
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@ -0,0 +1,2 @@
Improve import time of :mod:`socket` by lazy importing modules and
writing :data:`!socket.errorTab` as a constant.