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Created April 3, 2012 22:24
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require 'uv'
start = Time.now
loop = UV.default_loop
puts "sizeof timer #{UV.handle_size(:uv_timer)}"
puts "sizeof tcp is #{UV.handle_size(:uv_tcp)}"
# puts "sizeof handle is #{UV.handle_size(:uv_handle)}"
puts "sizeof tty is #{UV.handle_size(:uv_tty)}"
puts "sizeof udp is #{UV.handle_size(:uv_udp)}"
timer = UV.malloc(UV.handle_size(:uv_timer))
# timer = FFI::MemoryPointer.new(UV::Timer, UV::Timer.size, 1)
count = 0
UV.timer_init(loop, timer)
close_cb = proc {|ptr| UV.free(ptr); }
timer_cb = Proc.new do |ptr, status|
puts "1"
if count >= 10
# UV.timer_stop(timer)
UV.close(ptr, close_cb)
end
count += 1
end
UV.timer_start(timer, timer_cb, 1, 1)
UV.run(loop)
UV.loop_delete(loop)
puts Time.now - start
require 'ffi'
module UV
extend FFI::Library
FFI::DEBUG = 10
libc = ffi_lib(FFI::Library::LIBC).first
begin
# bias the library discovery to a path inside the gem first, then
# to the usual system paths
inside_gem = File.join(File.dirname(__FILE__), '..', 'ext')
LIBUV_PATHS = [
inside_gem, '/usr/local/lib', '/opt/local/lib', '/usr/lib64'
].map{|path| "#{path}/uv.#{FFI::Platform::LIBSUFFIX}"}
libuv = ffi_lib(LIBUV_PATHS + %w{libuv}).first
rescue LoadError
STDERR.puts "Unable to load this gem. The libuv library (or DLL) could not be found."
STDERR.puts "If this is a Windows platform, make sure libuv.dll is on the PATH."
STDERR.puts "For non-Windows platforms, make sure libzmq is located in this search path:"
STDERR.puts LIBUV_PATHS.inspect
exit 255
end
def self.union
Class.new(FFI::Union) do
layout yield
end
end
def self.struct
Class.new(FFI::Struct) do
layout yield
end
end
typedef :pointer, :uv_handle_t
typedef :pointer, :uv_fs_event_t
typedef :pointer, :uv_stream_t
typedef :pointer, :uv_tcp_t
typedef :pointer, :uv_udp_t
typedef :pointer, :uv_tty_t
typedef :pointer, :uv_pipe_t
typedef :pointer, :uv_prepare_t
typedef :pointer, :uv_check_t
typedef :pointer, :uv_idle_t
typedef :pointer, :uv_async_t
typedef :pointer, :uv_timer_t
typedef :pointer, :uv_process_t
typedef :pointer, :uv_connect_t
typedef :pointer, :uv_getaddrinfo_cb
typedef :pointer, :addrinfo
typedef :pointer, :uv_fs_t
typedef :pointer, :uv_work_t
typedef :pointer, :uv_loop_t
typedef :pointer, :uv_err_t
typedef :pointer, :uv_shutdown_t
typedef :pointer, :uv_buf_t
enum :uv_handle_type, [:uv_unknown_handle, 0,
:uv_tcp,
:uv_udp,
:uv_named_pipe,
:uv_tty,
:uv_file,
:uv_timer,
:uv_prepare,
:uv_check,
:uv_idle,
:uv_async,
:uv_ares_task,
:uv_ares_event,
:uv_process,
:uv_fs_event ]
typedef :pointer, :uv_write_t
typedef :pointer, :sockaddr_in
typedef :pointer, :sockaddr_in6
typedef :pointer, :sockaddr
typedef :pointer, :uv_connect_t
typedef :pointer, :uv_udp_send_t
typedef :pointer, :uv_membership
typedef :int, :uv_file
typedef :pointer, :ares_channel
typedef :pointer, :ares_options
typedef :pointer, :uv_getaddrinfo_t
typedef :pointer, :uv_options_t
typedef :pointer, :uv_cpu_info_t
typedef :pointer, :uv_interface_address_t
typedef :pointer, :uv_fs_t
typedef :pointer, :uv_lib_t
typedef :pointer, :uv_mutex_t
typedef :pointer, :uv_rwlock_t
typedef :pointer, :uv_once_t
typedef :pointer, :uv_thread_t
typedef :int, :status
# class Handle < FFI::Struct; end
# class Timer < FFI::Struct; end
# class TCP < FFI::Struct; end
# class UDP < FFI::Struct; end
# class TTY < FFI::Struct; end
# class Pipe < FFI::Struct; end
# class Prepare < FFI::Struct; end
#
# if FFI::Platform.windows?
# require 'uv/private/win'
# else
# require 'uv/private/unix'
# end
#
# UV_HANDLE_FIELDS = [
# :loop, :pointer,
# :type, :uv_handle_type,
# :close_cb, callback(:uv_close_cb, [Handle], :void),
# :data, :pointer
# ] + UV_HANDLE_PRIVATE_FIELDS
#
# UV_STREAM_FIELDS = [
# :write_queue_size, :size_t,
# :alloc_cb, callback(:uv_alloc_cb, [Handle, :size_t], :uv_buf_t),
# :read_cb, callback(:uv_read_cb, [:uv_stream_t, :ssize_t, :uv_buf_t], :void),
# :uv_read2_cb, callback(:uv_read2_cb, [Pipe, :ssize_t, :uv_buf_t, :uv_handle_type], :void)
# ] + UV_STREAM_PRIVATE_FIELDS
#
# Handle.layout *UV_HANDLE_FIELDS
# Timer.layout *(UV_HANDLE_FIELDS + UV_TIMER_PRIVATE_FIELDS)
# TCP.layout *(UV_HANDLE_FIELDS + UV_STREAM_FIELDS + UV_TCP_PRIVATE_FIELDS)
# UDP.layout *(UV_HANDLE_FIELDS + UV_UDP_PRIVATE_FIELDS)
# TTY.layout *(UV_HANDLE_FIELDS + UV_STREAM_FIELDS + UV_TTY_PRIVATE_FIELDS)
# Pipe.layout *(UV_HANDLE_FIELDS + UV_STREAM_FIELDS + UV_PIPE_PRIVATE_FIELDS + [:ipc, :int])
# Prepare.layout *(UV_HANDLE_FIELDS + UV_PREPARE_PRIVATE_FIELDS)
callback :uv_alloc_cb, [:uv_handle_t, :size_t], :uv_buf_t
callback :uv_read_cb, [:uv_stream_t, :ssize_t, :uv_buf_t], :void
callback :uv_read2_cb, [:uv_pipe_t, :ssize_t, :uv_buf_t, :uv_handle_type], :void
callback :uv_write_cb, [:uv_write_t, :status], :void
callback :uv_connect_cb, [:uv_connect_t, :status], :void
callback :uv_shutdown_cb, [:uv_shutdown_t, :status], :void
callback :uv_connection_cb, [:uv_stream_t, :status], :void
callback :uv_close_cb, [:uv_handle_t], :void
callback :uv_timer_cb, [:uv_timer_t, :status], :void
callback :uv_async_cb, [:uv_async_t, :status], :void
callback :uv_prepare_cb, [:uv_prepare_t, :status], :void
callback :uv_check_cb, [:uv_check_t, :status], :void
callback :uv_idle_cb, [:uv_idle_t, :status], :void
callback :uv_getaddrinfo_cb, [:uv_getaddrinfo_t, :status, :addrinfo], :void
callback :uv_exit_cb, [:uv_process_t, :int, :int], :void
callback :uv_fs_cb, [:uv_fs_t], :void
callback :uv_work_cb, [:uv_work_t], :void
callback :uv_after_work_cb, [:uv_work_t], :void
callback :uv_fs_event_cb, [:uv_fs_event_t, :string, :int, :int], :void
callback :uv_udp_send_cb, [:uv_udp_send_t, :int], :void
callback :uv_udp_recv_cb, [:uv_udp_t, :ssize_t, :uv_buf_t, :sockaddr, :uint], :void
callback :uv_cb, [], :void
attach_function :loop_new, :uv_loop_new, [], :uv_loop_t
attach_function :loop_delete, :uv_loop_delete, [:uv_loop_t], :void
attach_function :default_loop, :uv_default_loop, [], :uv_loop_t
attach_function :run, :uv_run, [:uv_loop_t], :int
attach_function :run_once, :uv_run_once, [:uv_loop_t], :int
attach_function :ref, :uv_ref, [:uv_loop_t], :void
attach_function :unref, :uv_unref, [:uv_loop_t], :void
attach_function :update_time, :uv_update_time, [:uv_loop_t], :void
attach_function :now, :uv_now, [:uv_loop_t], :int64
attach_function :last_error, :uv_last_error, [:uv_loop_t], :uv_err_t
attach_function :strerror, :uv_strerror, [:uv_err_t], :string
attach_function :err_name, :uv_err_name, [:uv_err_t], :string
attach_function :shutdown, :uv_shutdown, [:uv_shutdown_t, :uv_stream_t, :uv_shutdown_cb], :int
attach_function :is_active, :uv_is_active, [:uv_handle_t], :int
attach_function :close, :uv_close, [:uv_handle_t, :uv_close_cb], :void
attach_function :buf_init, :uv_buf_init, [:string, :size_t], :uv_buf_t
attach_function :strlcpy, :uv_strlcpy, [:string, :string, :size_t], :size_t
attach_function :strlcat, :uv_strlcat, [:string, :string, :size_t], :size_t
attach_function :listen, :uv_listen, [:uv_stream_t, :int, :uv_connection_cb], :int
attach_function :accept, :uv_accept, [:uv_stream_t, :uv_stream_t], :int
attach_function :read_start, :uv_read_start, [:uv_stream_t, :uv_alloc_cb, :uv_read_cb], :int
attach_function :read_stop, :uv_read_stop, [:uv_stream_t], :int
attach_function :read2_start, :uv_read2_start, [:uv_stream_t, :uv_alloc_cb, :uv_read2_cb], :int
attach_function :write, :uv_write, [:uv_write_t, :uv_stream_t, :uv_buf_t, :int, :uv_stream_t, :uv_write_cb], :int
attach_function :write2, :uv_write2, [:uv_write_t, :uv_stream_t, :uv_buf_t, :int, :uv_stream_t, :uv_write_cb], :int
attach_function :is_readable, :uv_is_readable, [:uv_stream_t], :int
attach_function :is_writable, :uv_is_writable, [:uv_stream_t], :int
# attach_function :is_closing, :uv_is_closing, [:uv_handle_t], :int
attach_function :tcp_init, :uv_tcp_init, [:uv_loop_t, :uv_tcp_t], :int
attach_function :tcp_nodelay, :uv_tcp_nodelay, [:uv_tcp_t, :int], :int
attach_function :tcp_keepalive, :uv_tcp_keepalive, [:uv_tcp_t, :int, :uint], :int
attach_function :tcp_simultaneous_accepts, :uv_tcp_simultaneous_accepts, [:uv_tcp_t, :int], :int
attach_function :tcp_bind, :uv_tcp_bind, [:uv_tcp_t, :sockaddr_in], :int
attach_function :tcp_bind6, :uv_tcp_bind6, [:uv_tcp_t, :sockaddr_in6], :int
attach_function :tcp_getsockname, :uv_tcp_getsockname, [:uv_tcp_t, :sockaddr, :int], :int
attach_function :tcp_getpeername, :uv_tcp_getpeername, [:uv_tcp_t, :sockaddr, :int], :int
attach_function :tcp_connect, :uv_tcp_connect, [:uv_connect_t, :uv_tcp_t, :sockaddr_in, :uv_connect_cb], :int
attach_function :tcp_connect6, :uv_tcp_connect6, [:uv_connect_t, :uv_tcp_t, :sockaddr_in6, :uv_connect_cb], :int
attach_function :udp_init, :uv_udp_init, [:uv_loop_t, :uv_udp_t], :int
attach_function :udp_bind, :uv_udp_bind, [:uv_udp_t, :sockaddr_in, :uint], :int
attach_function :udp_bind6, :uv_udp_bind6, [:uv_udp_t, :sockaddr_in6, :uint], :int
attach_function :udp_getsockname, :uv_udp_getsockname, [:uv_udp_t, :sockaddr, :int], :int
attach_function :udp_set_membership, :uv_udp_set_membership, [:uv_udp_t, :string, :string, :uv_membership], :int
attach_function :udp_set_multicast_loop, :uv_udp_set_multicast_loop, [:uv_udp_t, :int], :int
attach_function :udp_set_multicast_ttl, :uv_udp_set_multicast_ttl, [:uv_udp_t, :int], :int
attach_function :udp_set_broadcast, :uv_udp_set_broadcast, [:uv_udp_t, :int], :int
attach_function :udp_set_ttl, :uv_udp_set_ttl, [:uv_udp_t, :int], :int
attach_function :udp_send, :uv_udp_send, [:uv_udp_send_t, :uv_udp_t, :uv_buf_t, :int, :sockaddr_in, :uv_udp_send_cb], :int
attach_function :udp_send6, :uv_udp_send6, [:uv_udp_send_t, :uv_udp_t, :uv_buf_t, :int, :sockaddr_in6, :uv_udp_send_cb], :int
attach_function :udp_recv_start, :uv_udp_recv_start, [:uv_udp_t, :uv_alloc_cb, :uv_udp_recv_cb], :int
attach_function :udp_recv_stop, :uv_udp_recv_stop, [:uv_udp_t], :int
attach_function :tty_init, :uv_tty_init, [:uv_loop_t, :uv_tty_t, :uv_file, :int], :int
attach_function :tty_set_mode, :uv_tty_set_mode, [:uv_tty_t, :int], :int
attach_function :tty_reset_mode, :uv_tty_reset_mode, [], :void
attach_function :tty_get_winsize, :uv_tty_get_winsize, [:uv_tty_t, :pointer, :pointer], :int
attach_function :guess_handle, :uv_guess_handle, [:uv_file], :uv_handle_type
attach_function :pipe_init, :uv_pipe_init, [:uv_loop_t, :uv_pipe_t, :int], :int
attach_function :pipe_open, :uv_pipe_open, [:uv_pipe_t, :uv_file], :void
attach_function :pipe_bind, :uv_pipe_bind, [:uv_pipe_t, :string], :int
attach_function :pipe_connect, :uv_pipe_connect, [:uv_connect_t, :uv_pipe_t, :string, :uv_connect_cb], :void
attach_function :pipe_pending_instances, :uv_pipe_pending_instances, [:uv_pipe_t, :int], :void
attach_function :prepare_init, :uv_prepare_init, [:uv_loop_t, :uv_prepare_t], :int
attach_function :prepare_start, :uv_prepare_start, [:uv_prepare_t, :uv_prepare_cb], :int
attach_function :prepare_stop, :uv_prepare_stop, [:uv_prepare_t], :int
attach_function :check_init, :uv_check_init, [:uv_loop_t, :uv_check_t], :int
attach_function :check_start, :uv_check_start, [:uv_check_t, :uv_check_cb], :int
attach_function :check_stop, :uv_check_stop, [:uv_check_t], :int
attach_function :idle_init, :uv_idle_init, [:uv_loop_t, :uv_idle_t], :int
attach_function :idle_start, :uv_idle_start, [:uv_idle_t, :uv_idle_cb], :int
attach_function :idle_stop, :uv_idle_stop, [:uv_idle_t], :int
attach_function :async_init, :uv_async_init, [:uv_loop_t, :uv_async_t, :uv_async_cb], :int
attach_function :async_send, :uv_async_send, [:uv_async_t], :int
attach_function :timer_init, :uv_timer_init, [:uv_loop_t, :uv_timer_t], :int
attach_function :timer_start, :uv_timer_start, [:uv_timer_t, :uv_timer_cb, :int64_t, :int64_t], :int
attach_function :timer_stop, :uv_timer_stop, [:uv_timer_t], :int
attach_function :timer_again, :uv_timer_again, [:uv_timer_t], :int
attach_function :timer_set_repeat, :uv_timer_set_repeat, [:uv_timer_t, :int64_t], :void
attach_function :timer_get_repeat, :uv_timer_get_repeat, [:uv_timer_t], :int64_t
attach_function :ares_init_options, :uv_ares_init_options, [:uv_loop_t, :ares_channel, :ares_options, :int], :int
attach_function :ares_destroy, :uv_ares_destroy, [:uv_loop_t, :ares_channel], :void
attach_function :getaddrinfo, :uv_getaddrinfo, [:uv_loop_t, :uv_getaddrinfo_t, :uv_getaddrinfo_cb, :string, :string, :addrinfo], :int
attach_function :freeaddrinfo, :uv_freeaddrinfo, [:addrinfo], :void
attach_function :spawn, :uv_spawn, [:uv_loop_t, :uv_process_t, :uv_options_t], :int
attach_function :process_kill, :uv_process_kill, [:uv_process_t, :int], :int
attach_function :kill, :uv_kill, [:int, :int], :uv_err_t
attach_function :queue_work, :uv_queue_work, [:uv_loop_t, :uv_work_t, :uv_work_cb, :uv_after_work_cb], :int
attach_function :setup_args, :uv_setup_args, [:int, :varargs], :varargs
attach_function :get_process_title, :uv_get_process_title, [:pointer, :size_t], :uv_err_t
attach_function :set_process_title, :uv_set_process_title, [:string], :uv_err_t
attach_function :resident_set_memory, :uv_resident_set_memory, [:size_t], :uv_err_t
attach_function :uptime, :uv_uptime, [:pointer], :uv_err_t
attach_function :cpu_info, :uv_cpu_info, [:uv_cpu_info_t, :pointer], :uv_err_t
attach_function :free_cpu_info, :uv_free_cpu_info, [:uv_cpu_info_t, :int], :void
attach_function :interface_addresses, :uv_interface_addresses, [:uv_interface_address_t, :pointer], :uv_err_t
attach_function :free_interface_addresses, :uv_free_interface_addresses, [:uv_interface_address_t, :int], :void
attach_function :fs_req_cleanup, :uv_fs_req_cleanup, [:uv_fs_t], :void
attach_function :fs_close, :uv_fs_close, [:uv_loop_t, :uv_fs_t, :uv_file, :uv_fs_cb], :int
attach_function :fs_open, :uv_fs_open, [:uv_loop_t, :uv_fs_t, :string, :int, :int, :uv_fs_cb], :int
attach_function :fs_read, :uv_fs_read, [:uv_loop_t, :uv_fs_t, :uv_file, :string, :size_t, :off_t, :uv_fs_cb], :int
attach_function :fs_unlink, :uv_fs_unlink, [:uv_loop_t, :uv_fs_t, :string, :uv_fs_cb], :int
attach_function :fs_write, :uv_fs_write, [:uv_loop_t, :uv_fs_t, :uv_file, :string, :size_t, :off_t, :uv_fs_cb], :int
attach_function :fs_mkdir, :uv_fs_mkdir, [:uv_loop_t, :uv_fs_t, :string, :int, :uv_fs_cb], :int
attach_function :fs_rmdir, :uv_fs_rmdir, [:uv_loop_t, :uv_fs_t, :string, :uv_fs_cb], :int
attach_function :fs_readdir, :uv_fs_readdir, [:uv_loop_t, :uv_fs_t, :string, :int, :uv_fs_cb], :int
attach_function :fs_stat, :uv_fs_stat, [:uv_loop_t, :uv_fs_t, :string, :uv_fs_cb], :int
attach_function :fs_fstat, :uv_fs_fstat, [:uv_loop_t, :uv_fs_t, :uv_file, :uv_fs_cb], :int
attach_function :fs_rename, :uv_fs_rename, [:uv_loop_t, :uv_fs_t, :string, :string, :uv_fs_cb], :int
attach_function :fs_fsync, :uv_fs_fsync, [:uv_loop_t, :uv_fs_t, :uv_file, :uv_fs_cb], :int
attach_function :fs_fdatasync, :uv_fs_fdatasync, [:uv_loop_t, :uv_fs_t, :uv_file, :uv_fs_cb], :int
attach_function :fs_ftruncate, :uv_fs_ftruncate, [:uv_loop_t, :uv_fs_t, :uv_file, :off_t, :uv_fs_cb], :int
attach_function :fs_sendfile, :uv_fs_sendfile, [:uv_loop_t, :uv_fs_t, :uv_file, :uv_file, :off_t, :size_t, :uv_fs_cb], :int
attach_function :fs_chmod, :uv_fs_chmod, [:uv_loop_t, :uv_fs_t, :string, :int, :uv_fs_cb], :int
attach_function :fs_utime, :uv_fs_utime, [:uv_loop_t, :uv_fs_t, :string, :double, :double, :uv_fs_cb], :int
attach_function :fs_futime, :uv_fs_futime, [:uv_loop_t, :uv_fs_t, :uv_file, :double, :double, :uv_fs_cb], :int
attach_function :fs_lstat, :uv_fs_lstat, [:uv_loop_t, :uv_fs_t, :string, :uv_fs_cb], :int
attach_function :fs_link, :uv_fs_link, [:uv_loop_t, :uv_fs_t, :string, :string, :uv_fs_cb], :int
attach_function :fs_symlink, :uv_fs_symlink, [:uv_loop_t, :uv_fs_t, :string, :string, :int, :uv_fs_cb], :int
attach_function :fs_readlink, :uv_fs_readlink, [:uv_loop_t, :uv_fs_t, :string, :uv_fs_cb], :int
attach_function :fs_fchmod, :uv_fs_fchmod, [:uv_loop_t, :uv_fs_t, :uv_file, :int, :uv_fs_cb], :int
attach_function :fs_chown, :uv_fs_chown, [:uv_loop_t, :uv_fs_t, :string, :int, :int, :uv_fs_cb], :int
attach_function :fs_fchown, :uv_fs_fchown, [:uv_loop_t, :uv_fs_t, :uv_file, :int, :int, :uv_fs_cb], :int
attach_function :loadavg, :uv_loadavg, [:pointer], :void
attach_function :fs_event_init, :uv_fs_event_init, [:uv_loop_t, :uv_fs_event_t, :string, :uv_fs_event_cb, :int], :int
attach_function :ip4_addr, :uv_ip4_addr, [:string, :int], :sockaddr_in
attach_function :ip6_addr, :uv_ip6_addr, [:string, :int], :sockaddr_in6
attach_function :ip4_name, :uv_ip4_name, [:sockaddr_in, :pointer, :size_t], :int
attach_function :ip6_name, :uv_ip6_name, [:sockaddr_in6, :pointer, :size_t], :int
attach_function :exepath, :uv_exepath, [:pointer, :size_t], :int
attach_function :cwd, :uv_cwd, [:pointer, :size_t], :uv_err_t
attach_function :chdir, :uv_chdir, [:string], :uv_err_t
attach_function :get_free_memory, :uv_get_free_memory, [], :uint64
attach_function :get_total_memory, :uv_get_total_memory, [], :uint64
attach_function :hrtime, :uv_hrtime, [], :uint64
attach_function :dlopen, :uv_dlopen, [:string, :uv_lib_t], :uv_err_t
attach_function :dlclose, :uv_dlclose, [:uv_lib_t], :uv_err_t
# attach_function :dlsym, :uv_dlsym, [:uv_lib_t], :ev_err_t
attach_function :dlerror, :uv_dlerror, [:uv_lib_t], :string
attach_function :dlerror_free, :uv_dlerror_free, [:uv_lib_t, :string], :void
attach_function :mutex_init, :uv_mutex_init, [:uv_mutex_t], :int
attach_function :mutex_destroy, :uv_mutex_destroy, [:uv_mutex_t], :void
attach_function :mutex_lock, :uv_mutex_lock, [:uv_mutex_t], :void
attach_function :mutex_trylock, :uv_mutex_trylock, [:uv_mutex_t], :int
attach_function :mutex_unlock, :uv_mutex_unlock, [:uv_mutex_t], :void
attach_function :rwlock_init, :uv_rwlock_init, [:uv_rwlock_t], :int
attach_function :rwlock_destroy, :uv_rwlock_destroy, [:uv_rwlock_t], :void
attach_function :rwlock_rdlock, :uv_rwlock_rdlock, [:uv_rwlock_t], :void
attach_function :rwlock_tryrdlock, :uv_rwlock_tryrdlock, [:uv_rwlock_t], :int
attach_function :rwlock_rdunlock, :uv_rwlock_rdunlock, [:uv_rwlock_t], :void
attach_function :rwlock_wrlock, :uv_rwlock_wrlock, [:uv_rwlock_t], :void
attach_function :rwlock_trywrlock, :uv_rwlock_trywrlock, [:uv_rwlock_t], :int
attach_function :rwlock_wrunlock, :uv_rwlock_wrunlock, [:uv_rwlock_t], :void
attach_function :once, :uv_once, [:uv_once_t, :uv_cb], :void
attach_function :thread_create, :uv_thread_create, [:uv_thread_t, :uv_cb], :int
attach_function :thread_join, :uv_thread_join, [:uv_thread_t], :int
# memory management
attach_function :malloc, [:size_t], :pointer
attach_function :calloc, [:size_t], :pointer
attach_function :valloc, [:size_t], :pointer
attach_function :realloc, [:pointer, :size_t], :pointer
attach_function :free, [:pointer], :void
attach_function :handle_size, :uv_handle_size, [:uv_handle_type], :size_t
end
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