# Module ThreadUnix

    module ThreadUnix: sig .. end

Deprecated.The functionality of this module has been merged back into the `Unix` module. Threaded programs can now call the functions from module `Unix` directly, and still get the correct behavior (block the calling thread, if required, but do not block all threads in the process).

Thread-compatible system calls.

## Process handling

    val execv : string -> string array -> unit

    val execve : string -> string array -> string array -> unit

    val execvp : string -> string array -> unit

    val wait : unit -> int * Unix.process_status

    val waitpid : Unix.wait_flag list -> int -> int * Unix.process_status

    val system : string -> Unix.process_status

## Basic input/output

    val read : Unix.file_descr -> bytes -> int -> int -> int

    val write : Unix.file_descr -> bytes -> int -> int -> int

    val write_substring : Unix.file_descr -> string -> int -> int -> int

## Input/output with timeout

    val timed_read : Unix.file_descr -> bytes -> int -> int -> float -> int

See `ThreadUnix.timed_write`.

    val timed_write : Unix.file_descr -> bytes -> int -> int -> float -> int

Behave as `ThreadUnix.read` and `ThreadUnix.write`, except that `Unix_error(ETIMEDOUT,_,_)` is raised if no data is available for reading or ready for writing after `d` seconds. The delay `d` is given in the fifth argument, in seconds.

    val timed_write_substring : Unix.file_descr -> string -> int -> int -> float -> int

See `ThreadUnix.timed_write`.

## Polling

    val select : Unix.file_descr list ->
           Unix.file_descr list ->
           Unix.file_descr list ->
           float -> Unix.file_descr list * Unix.file_descr list * Unix.file_descr list

## Pipes and redirections

    val pipe : ?cloexec:bool -> unit -> Unix.file_descr * Unix.file_descr

    val open_process_in : string -> in_channel

    val open_process_out : string -> out_channel

    val open_process : string -> in_channel * out_channel

## Time

    val sleep : int -> unit

## Sockets

    val socket : ?cloexec:bool ->
           Unix.socket_domain -> Unix.socket_type -> int -> Unix.file_descr

    val accept : ?cloexec:bool -> Unix.file_descr -> Unix.file_descr * Unix.sockaddr

    val connect : Unix.file_descr -> Unix.sockaddr -> unit

    val recv : Unix.file_descr -> bytes -> int -> int -> Unix.msg_flag list -> int

    val recvfrom : Unix.file_descr ->
           bytes -> int -> int -> Unix.msg_flag list -> int * Unix.sockaddr

    val send : Unix.file_descr -> bytes -> int -> int -> Unix.msg_flag list -> int

    val send_substring : Unix.file_descr -> string -> int -> int -> Unix.msg_flag list -> int

    val sendto : Unix.file_descr ->
           bytes -> int -> int -> Unix.msg_flag list -> Unix.sockaddr -> int

    val sendto_substring : Unix.file_descr ->
           string -> int -> int -> Unix.msg_flag list -> Unix.sockaddr -> int

    val open_connection : Unix.sockaddr -> in_channel * out_channel