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ruby--ruby/ext/fiddle/lib/fiddle.rb
Sutou Kouhei 71d4a493b8 [ruby/fiddle] windows: add Fiddle.win32_last_socket_error{,=}
GitHub: fix GH-72

Users can't use WSAGetLastError() with Ruby 3.0 or later because
rb_funcall() resets the last socket error internally.

Users can get the last socket error by Fiddle.win32_last_socket_error.

Reported by Kentaro Hayashi. Thanks!!!

https://github.com/ruby/fiddle/commit/76158db00a
2021-05-18 12:48:40 +09:00

70 lines
2.1 KiB
Ruby

# frozen_string_literal: true
require 'fiddle.so'
require 'fiddle/closure'
require 'fiddle/function'
require 'fiddle/version'
module Fiddle
if WINDOWS
# Returns the last win32 +Error+ of the current executing +Thread+ or nil
# if none
def self.win32_last_error
Thread.current[:__FIDDLE_WIN32_LAST_ERROR__]
end
# Sets the last win32 +Error+ of the current executing +Thread+ to +error+
def self.win32_last_error= error
Thread.current[:__FIDDLE_WIN32_LAST_ERROR__] = error
end
# Returns the last win32 socket +Error+ of the current executing
# +Thread+ or nil if none
def self.win32_last_socket_error
Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__]
end
# Sets the last win32 socket +Error+ of the current executing
# +Thread+ to +error+
def self.win32_last_socket_error= error
Thread.current[:__FIDDLE_WIN32_LAST_SOCKET_ERROR__] = error
end
end
# Returns the last +Error+ of the current executing +Thread+ or nil if none
def self.last_error
Thread.current[:__FIDDLE_LAST_ERROR__]
end
# Sets the last +Error+ of the current executing +Thread+ to +error+
def self.last_error= error
Thread.current[:__DL2_LAST_ERROR__] = error
Thread.current[:__FIDDLE_LAST_ERROR__] = error
end
# call-seq: dlopen(library) => Fiddle::Handle
#
# Creates a new handler that opens +library+, and returns an instance of
# Fiddle::Handle.
#
# If +nil+ is given for the +library+, Fiddle::Handle::DEFAULT is used, which
# is the equivalent to RTLD_DEFAULT. See <code>man 3 dlopen</code> for more.
#
# lib = Fiddle.dlopen(nil)
#
# The default is dependent on OS, and provide a handle for all libraries
# already loaded. For example, in most cases you can use this to access
# +libc+ functions, or ruby functions like +rb_str_new+.
#
# See Fiddle::Handle.new for more.
def dlopen library
Fiddle::Handle.new library
end
module_function :dlopen
# Add constants for backwards compat
RTLD_GLOBAL = Handle::RTLD_GLOBAL # :nodoc:
RTLD_LAZY = Handle::RTLD_LAZY # :nodoc:
RTLD_NOW = Handle::RTLD_NOW # :nodoc:
end