module Thread:sig..end
Lightweight threads.
type t
The type of thread handles.
val create : ('a -> 'b) -> 'a -> tThread.create funct arg creates a new thread of control,
in which the function application funct arg
is executed concurrently with the other threads of the program.
The application of Thread.create
returns the handle of the newly created thread.
The new thread terminates when the application funct arg
returns, either normally or by raising an uncaught exception.
In the latter case, the exception is printed on standard error,
but not propagated back to the parent thread. Similarly, the
result of the application funct arg is discarded and not
directly accessible to the parent thread.
val self : unit -> tReturn the thread currently executing.
val id : t -> intReturn the identifier of the given thread. A thread identifier is an integer that identifies uniquely the thread. It can be used to build data structures indexed by threads.
val exit : unit -> unitTerminate prematurely the currently executing thread.
val kill : t -> unitTerminate prematurely the thread whose handle is given. This functionality is available only with bytecode-level threads.
val delay : float -> unitdelay d suspends the execution of the calling thread for
d seconds. The other program threads continue to run during
this time.
val join : t -> unitjoin th suspends the execution of the calling thread
until the thread th has terminated.
val wait_read : Unix.file_descr -> unitSee Thread.wait_write.
val wait_write : Unix.file_descr -> unitSuspend the execution of the calling thread until at least
one character or EOF is available for reading (Thread.wait_read) or
one character can be written without blocking (wait_write)
on the given Unix file descriptor.
val wait_timed_read : Unix.file_descr -> float -> bool
val wait_timed_write : Unix.file_descr -> float -> boolSame as Thread.wait_read and Thread.wait_write, but wait for at most
the amount of time given as second argument (in seconds).
Return true if the file descriptor is ready for input/output
and false if the timeout expired.
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 listSuspend the execution of the calling thread until input/output
becomes possible on the given Unix file descriptors.
The arguments and results have the same meaning as for
Unix.select.
val wait_pid : int -> int * Unix.process_statuswait_pid p suspends the execution of the calling thread
until the Unix process specified by the process identifier p
terminates. A pid p of -1 means wait for any child.
A pid of 0 means wait for any child in the same process group
as the current process. Negative pid arguments represent
process groups. Returns the pid of the child caught and
its termination status, as per Unix.wait.
val wait_signal : int list -> intwait_signal sigs suspends the execution of the calling thread
until the process receives one of the signals specified in the
list sigs. It then returns the number of the signal received.
Signal handlers attached to the signals in sigs will not
be invoked. Do not call wait_signal concurrently
from several threads on the same signals.
val yield : unit -> unitRe-schedule the calling thread without suspending it. This function can be used to give scheduling hints, telling the scheduler that now is a good time to switch to other threads.