diff --git a/index.html b/index.html index baf7c589..256e5f2b 100644 --- a/index.html +++ b/index.html @@ -1,9 +1,8 @@ - index - + @@ -12,9 +11,9 @@

OCaml package documentation

    -
  1. moonpool
    2. +
  2. moonpool 0.4
- + \ No newline at end of file diff --git a/moonpool/Moonpool/Atomic/index.html b/moonpool/Moonpool/Atomic/index.html new file mode 100644 index 00000000..7d911ea5 --- /dev/null +++ b/moonpool/Moonpool/Atomic/index.html @@ -0,0 +1,2 @@ + +Atomic (moonpool.Moonpool.Atomic)

Module Moonpool.Atomic

Atomic values.

This is either a shim using ref, on pre-OCaml 5, or the standard Atomic module on OCaml 5.

include module type of struct include Stdlib.Atomic end
type !'a t = 'a Stdlib__Atomic.t
val make : 'a -> 'a t
val get : 'a t -> 'a
val set : 'a t -> 'a -> unit
val exchange : 'a t -> 'a -> 'a
val compare_and_set : 'a t -> 'a -> 'a -> bool
val fetch_and_add : int t -> int -> int
val incr : int t -> unit
val decr : int t -> unit
\ No newline at end of file diff --git a/moonpool/Moonpool/Blocking_queue/index.html b/moonpool/Moonpool/Blocking_queue/index.html new file mode 100644 index 00000000..c95fbaf1 --- /dev/null +++ b/moonpool/Moonpool/Blocking_queue/index.html @@ -0,0 +1,17 @@ + +Blocking_queue (moonpool.Moonpool.Blocking_queue)

Module Moonpool.Blocking_queue

A simple blocking queue.

This queue is quite basic and will not behave well under heavy contention. However, it can be sufficient for many practical use cases.

NOTE: this queue will typically block the caller thread in case the operation (push/pop) cannot proceed. Be wary of deadlocks when using the queue from a pool when you expect the other end to also be produced/consumed from the same pool.

See discussion on Fut.wait_block for more details on deadlocks and how to mitigate the risk of running into them.

More scalable queues can be found in Lockfree (https://github.com/ocaml-multicore/lockfree/)

type 'a t

Unbounded blocking queue.

This queue is thread-safe and will block when calling pop on it when it's empty.

val create : unit -> _ t

Create a new unbounded queue.

val size : _ t -> int

Number of items currently in the queue. Note that pop might still block if this returns a non-zero number, since another thread might have consumed the items in the mean time.

  • since 0.2
exception Closed
val push : 'a t -> 'a -> unit

push q x pushes x into q, and returns ().

In the current implementation, push q will never block for a long time, it will only block while waiting for a lock so it can push the element.

  • raises Closed

    if the queue is closed (by a previous call to close q)

val pop : 'a t -> 'a

pop q pops the next element in q. It might block until an element comes.

  • raises Closed

    if the queue was closed before a new element was available.

val close : _ t -> unit

Close the queue, meaning there won't be any more push allowed, ie push will raise Closed.

pop will keep working and will return the elements present in the queue, until it's entirely drained; then pop will also raise Closed.

val try_pop : force_lock:bool -> 'a t -> 'a option

try_pop q immediately pops the first element of q, if any, or returns None without blocking.

  • parameter force_lock

    if true, use Mutex.lock (which can block under contention); if false, use Mutex.try_lock, which might return None even in presence of an element if there's contention

val try_push : 'a t -> 'a -> bool

try_push q x tries to push into q, in which case it returns true; or it fails to push and returns false without blocking.

  • raises Closed

    if the locking succeeded but the queue is closed.

val transfer : 'a t -> 'a Stdlib.Queue.t -> unit

transfer bq q2 transfers all items presently in bq into q2 in one atomic section, and clears bq. It blocks if no element is in bq.

This is useful to consume elements from the queue in batch. Create a Queue.t locally:

let dowork (work_queue: job Bb_queue.t) =
+  (* local queue, not thread safe *)
+  let local_q = Queue.create() in
+  try
+    while true do
+      (* work on local events, already on this thread *)
+      while not (Queue.is_empty local_q) do
+        let job = Queue.pop local_q in
+        process_job job
+      done;
+
+      (* get all the events in the incoming blocking queue, in
+         one single critical section. *)
+      Bb_queue.transfer work_queue local_q
+    done
+  with Bb_queue.Closed -> ()
  • since NEXT_RELEASE
type 'a gen = unit -> 'a option
type 'a iter = ('a -> unit) -> unit
val to_iter : 'a t -> 'a iter

to_iter q returns an iterator over all items in the queue. This might not terminate if q is never closed.

  • since NEXT_RELEASE
val to_gen : 'a t -> 'a gen

to_gen q returns a generator from the queue.

  • since NEXT_RELEASE
val to_seq : 'a t -> 'a Stdlib.Seq.t

to_gen q returns a (transient) sequence from the queue.

  • since NEXT_RELEASE
\ No newline at end of file diff --git a/moonpool/Moonpool/Chan/index.html b/moonpool/Moonpool/Chan/index.html new file mode 100644 index 00000000..9616c3b5 --- /dev/null +++ b/moonpool/Moonpool/Chan/index.html @@ -0,0 +1,2 @@ + +Chan (moonpool.Moonpool.Chan)

Module Moonpool.Chan

Channels.

Channels are pipelines of values where threads can push into one end, and pull from the other end.

Unlike Moonpool.Blocking_queue, channels are designed so that pushing never blocks, and pop'ing values returns a future.

type 'a or_error = 'a Fut.or_error
type 'a t

Channel carrying values of type 'a.

val create : unit -> 'a t

Create a channel.

exception Closed
val push : 'a t -> 'a -> unit

push chan x pushes x into chan. This does not block.

  • raises Closed

    if the channel is closed.

val pop : 'a t -> 'a Fut.t

Pop an element. This returns a future that will be fulfilled when an element is available.

  • raises Closed

    if the channel is closed, or fails the future if the channel is closed before an element is available for it.

val try_pop : 'a t -> 'a option

try_pop chan pops and return an element if one is available immediately. Otherwise it returns None.

val pop_block_exn : 'a t -> 'a

Like pop, but blocks if an element is not available immediately. The precautions around blocking from inside a thread pool are the same as explained in Fut.wait_block.

val close : _ t -> unit

Close the channel. Further push and pop calls will fail. This is idempotent.

val pop_await : 'a t -> 'a

Like pop but suspends the current thread until an element is available. See await for more details.

  • since 0.3
\ No newline at end of file diff --git a/moonpool/Moonpool/Fork_join/index.html b/moonpool/Moonpool/Fork_join/index.html new file mode 100644 index 00000000..34370e16 --- /dev/null +++ b/moonpool/Moonpool/Fork_join/index.html @@ -0,0 +1,13 @@ + +Fork_join (moonpool.Moonpool.Fork_join)

Module Moonpool.Fork_join

Fork-join primitives.

NOTE These are only available on OCaml 5.0 and above.

val both : (unit -> 'a) -> (unit -> 'b) -> 'a * 'b

both f g runs f() and g(), potentially in parallel, and returns their result when both are done. If any of f() and g() fails, then the whole computation fails.

This must be run from within the pool: for example, inside Pool.run or inside a Fut.spawn computation. This is because it relies on an effect handler to be installed.

  • since 0.3

NOTE this is only available on OCaml 5.

val both_ignore : (unit -> _) -> (unit -> _) -> unit

Same as both f g |> ignore.

  • since 0.3

NOTE this is only available on OCaml 5.

val for_ : ?chunk_size:int -> int -> (int -> int -> unit) -> unit

for_ n f is the parallel version of for i=0 to n-1 do f i done.

f is called with parameters low and high and must use them like so:

for j = low to high do (* … actual work *) done

. If chunk_size=1 then low=high and the loop is not actually needed.

  • parameter chunk_size

    controls the granularity of parallelism. The default chunk size is not specified. See all_array or all_list for more details.

    Example:

    let total_sum = Atomic.make 0
+
+let() = for_ ~chunk_size:5 100
+  (fun low high ->
+    (* iterate on the range sequentially. The range should have 5 items or less. *)
+    let local_sum = ref 0 in
+    for j=low to high do
+      local_sum := !local_sum + j
+    done;
+    ignore (Atomic.fetch_and_add total_sum !local_sum : int)))
+
+let() = assert (Atomic.get total_sum = 4950)

    Note how we still compute a local sum sequentially in (fun low high -> …), before combining it wholesale into total_sum. When the chunk size is large, this can have a dramatic impact on the synchronization overhead.

    When chunk_size is not provided, the library will attempt to guess a value that keeps all cores busy but runs as few tasks as possible to reduce the synchronization overhead.

    Use ~chunk_size:1 if you explicitly want to run each iteration of the loop in its own task.

  • since 0.3

NOTE this is only available on OCaml 5.

val all_array : ?chunk_size:int -> (unit -> 'a) array -> 'a array

all_array fs runs all functions in fs in tasks, and waits for all the results.

  • parameter chunk_size

    if equal to n, groups items by n to be run in a single task. Default is 1.

  • since 0.3

NOTE this is only available on OCaml 5.

val all_list : ?chunk_size:int -> (unit -> 'a) list -> 'a list

all_list fs runs all functions in fs in tasks, and waits for all the results.

  • parameter chunk_size

    if equal to n, groups items by n to be run in a single task. Default is not specified. This parameter is available since 0.3.

  • since 0.3

NOTE this is only available on OCaml 5.

val all_init : ?chunk_size:int -> int -> (int -> 'a) -> 'a list

all_init n f runs functions f 0, f 1, … f (n-1) in tasks, and waits for all the results.

  • parameter chunk_size

    if equal to n, groups items by n to be run in a single task. Default is not specified. This parameter is available since 0.3.

  • since 0.3

NOTE this is only available on OCaml 5.

val map_array : ?chunk_size:int -> ('a -> 'b) -> 'a array -> 'b array

map_array f arr is like Array.map f arr, but runs in parallel.

  • since 0.3

NOTE this is only available on OCaml 5.

val map_list : ?chunk_size:int -> ('a -> 'b) -> 'a list -> 'b list

map_list f l is like List.map f l, but runs in parallel.

  • since 0.3

NOTE this is only available on OCaml 5.

\ No newline at end of file diff --git a/moonpool/Moonpool/Fut/Infix/argument-1-_/index.html b/moonpool/Moonpool/Fut/Infix/argument-1-_/index.html index c335f183..892dbf3c 100644 --- a/moonpool/Moonpool/Fut/Infix/argument-1-_/index.html +++ b/moonpool/Moonpool/Fut/Infix/argument-1-_/index.html @@ -1,2 +1,2 @@ -_ (moonpool.Moonpool.Fut.Infix._)

Parameter Infix._

val pool : Pool.t
\ No newline at end of file +_ (moonpool.Moonpool.Fut.Infix._)

Parameter Infix._

val pool : Runner.t
\ No newline at end of file diff --git a/moonpool/Moonpool/Fut/Infix/index.html b/moonpool/Moonpool/Fut/Infix/index.html index 1cac06da..f52d115b 100644 --- a/moonpool/Moonpool/Fut/Infix/index.html +++ b/moonpool/Moonpool/Fut/Infix/index.html @@ -1,2 +1,2 @@ -Infix (moonpool.Moonpool.Fut.Infix)

Module Fut.Infix

Make infix combinators

Parameters

module _ : sig ... end

Signature

val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
\ No newline at end of file +Infix (moonpool.Moonpool.Fut.Infix)

Module Fut.Infix

Make infix combinators, with intermediate computations running on the given pool.

Parameters

module _ : sig ... end

Signature

val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
\ No newline at end of file diff --git a/moonpool/Moonpool/Fut/Infix_local/index.html b/moonpool/Moonpool/Fut/Infix_local/index.html new file mode 100644 index 00000000..70dbdd2d --- /dev/null +++ b/moonpool/Moonpool/Fut/Infix_local/index.html @@ -0,0 +1,2 @@ + +Infix_local (moonpool.Moonpool.Fut.Infix_local)

Module Fut.Infix_local

Operators that run on the same thread as the first future.

val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
\ No newline at end of file diff --git a/moonpool/Moonpool/Fut/index.html b/moonpool/Moonpool/Fut/index.html index 985b2fd4..c59e1d50 100644 --- a/moonpool/Moonpool/Fut/index.html +++ b/moonpool/Moonpool/Fut/index.html @@ -1,2 +1,2 @@ -Fut (moonpool.Moonpool.Fut)

Module Moonpool.Fut

Futures.

A future of type 'a t represents the result of a computation that will yield a value of type 'a.

Typically, the computation is running on a thread pool Pool.t and will proceed on some worker. Once set, a future cannot change. It either succeeds (storing a Ok x with x: 'a), or fail (storing a Error (exn, bt) with an exception and the corresponding backtrace).

Combinators such as map and join_array can be used to produce futures from other futures (in a monadic way). Some combinators take a pool argument to specify where the intermediate computation takes place; for example map ~pool ~f fut maps the value in fut using function f, applicatively; the call to f happens on pool pool (once fut resolves successfully with a value).

type 'a or_error = ('a, exn * Stdlib.Printexc.raw_backtrace) Stdlib.result
type 'a t

A future with a result of type 'a.

type 'a promise

A promise, which can be fulfilled exactly once to set the corresponding future

val make : unit -> 'a t * 'a promise

Make a new future with the associated promise

val on_result : 'a t -> ('a or_error -> unit) -> unit

on_result fut f registers f to be called in the future when fut is set ; or calls f immediately if fut is already set.

exception Already_fulfilled
val fulfill : 'a promise -> 'a or_error -> unit

Fullfill the promise, setting the future at the same time.

  • raises Already_fulfilled

    if the promise is already fulfilled.

val fulfill_idempotent : 'a promise -> 'a or_error -> unit

Fullfill the promise, setting the future at the same time. Does nothing if the promise is already fulfilled.

val return : 'a -> 'a t

Already settled future, with a result

val fail : exn -> Stdlib.Printexc.raw_backtrace -> _ t

Already settled future, with a failure

val of_result : 'a or_error -> 'a t
val is_resolved : _ t -> bool

is_resolved fut is true iff fut is resolved.

val peek : 'a t -> 'a or_error option

peek fut returns Some r if fut is currently resolved with r, and None if fut is not resolved yet.

Combinators

val spawn : on:Pool.t -> (unit -> 'a) -> 'a t

spaw ~on f runs f() on the given pool, and return a future that will hold its result.

val map : ?on:Pool.t -> f:('a -> 'b) -> 'a t -> 'b t

map ?on ~f fut returns a new future fut2 that resolves with f x if fut resolved with x; and fails with e if fut fails with e or f x raises e.

  • parameter on

    if provided, f runs on the given pool

val bind : ?on:Pool.t -> f:('a -> 'b t) -> 'a t -> 'b t

map ?on ~f fut returns a new future fut2 that resolves like the future f x if fut resolved with x; and fails with e if fut fails with e or f x raises e.

  • parameter on

    if provided, f runs on the given pool

val both : 'a t -> 'b t -> ('a * 'b) t

both a b succeeds with x, y if a succeeds with x and b succeeds with y, or fails if any of them fails.

val choose : 'a t -> 'b t -> ('a, 'b) Either.t t

choose a b succeeds Left x or Right y if a succeeds with x or b succeeds with y, or fails if both of them fails. If they both succeed, it is not specified which result is used.

val choose_same : 'a t -> 'a t -> 'a t

choose_same a b succeeds with the value of one of a or b if they succeed, or fails if both fail. If they both succeed, it is not specified which result is used.

val join_array : 'a t array -> 'a array t

Wait for all the futures in the array. Fails if any future fails.

val join_list : 'a t list -> 'a list t

Wait for all the futures in the list. Fails if any future fails.

val wait_array : _ t array -> unit t

wait_array arr waits for all futures in arr to resolve. It discards the individual results of futures in arr. It fails if any future fails.

val wait_list : _ t list -> unit t

wait_list l waits for all futures in l to resolve. It discards the individual results of futures in l. It fails if any future fails.

val for_ : on:Pool.t -> int -> (int -> unit) -> unit t

for_ ~on n f runs f 0, f 1, …, f (n-1) on the pool, and returns a future that resolves when all the tasks have resolved, or fails as soon as one task has failed.

Blocking

val wait_block : 'a t -> 'a or_error

wait_block fut blocks the current thread until fut is resolved, and returns its value.

A word of warning: this will monopolize the calling thread until the future resolves. This can also easily cause deadlocks, if enough threads in a pool call wait_block on futures running on the same pool or a pool depending on it.

A good rule to avoid deadlocks is to run this from outside of any pool, or to have an acyclic order between pools where wait_block is only called from a pool on futures evaluated in a pool that comes lower in the hierarchy. If this rule is broken, it is possible for all threads in a pool to wait for futures that can only make progress on these same threads, hence the deadlock.

val wait_block_exn : 'a t -> 'a

Same as wait_block but re-raises the exception if the future failed.

module type INFIX = sig ... end

Operators that run on the same thread

include INFIX
val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
module Infix (_ : sig ... end) : INFIX

Make infix combinators

\ No newline at end of file +Fut (moonpool.Moonpool.Fut)

Module Moonpool.Fut

Futures.

A future of type 'a t represents the result of a computation that will yield a value of type 'a.

Typically, the computation is running on a thread pool Runner.t and will proceed on some worker. Once set, a future cannot change. It either succeeds (storing a Ok x with x: 'a), or fail (storing a Error (exn, bt) with an exception and the corresponding backtrace).

Combinators such as map and join_array can be used to produce futures from other futures (in a monadic way). Some combinators take a on argument to specify a runner on which the intermediate computation takes place; for example map ~on:pool ~f fut maps the value in fut using function f, applicatively; the call to f happens on the runner pool (once fut resolves successfully with a value).

type 'a or_error = ('a, exn * Stdlib.Printexc.raw_backtrace) Stdlib.result
type 'a t

A future with a result of type 'a.

type 'a promise

A promise, which can be fulfilled exactly once to set the corresponding future

val make : unit -> 'a t * 'a promise

Make a new future with the associated promise

val on_result : 'a t -> ('a or_error -> unit) -> unit

on_result fut f registers f to be called in the future when fut is set ; or calls f immediately if fut is already set.

exception Already_fulfilled
val fulfill : 'a promise -> 'a or_error -> unit

Fullfill the promise, setting the future at the same time.

  • raises Already_fulfilled

    if the promise is already fulfilled.

val fulfill_idempotent : 'a promise -> 'a or_error -> unit

Fullfill the promise, setting the future at the same time. Does nothing if the promise is already fulfilled.

val return : 'a -> 'a t

Already settled future, with a result

val fail : exn -> Stdlib.Printexc.raw_backtrace -> _ t

Already settled future, with a failure

val of_result : 'a or_error -> 'a t
val is_resolved : _ t -> bool

is_resolved fut is true iff fut is resolved.

val peek : 'a t -> 'a or_error option

peek fut returns Some r if fut is currently resolved with r, and None if fut is not resolved yet.

exception Not_ready
  • since 0.2
val get_or_fail : 'a t -> 'a or_error

get_or_fail fut obtains the result from fut if it's fulfilled (i.e. if peek fut returns Some res, get_or_fail fut returns res).

  • raises Not_ready

    if the future is not ready.

  • since 0.2
val get_or_fail_exn : 'a t -> 'a

get_or_fail_exn fut obtains the result from fut if it's fulfilled, like get_or_fail. If the result is an Error _, the exception inside is re-raised.

  • raises Not_ready

    if the future is not ready.

  • since 0.2
val is_done : _ t -> bool

Is the future resolved? This is the same as peek fut |> Option.is_some.

  • since 0.2

Combinators

val spawn : on:Runner.t -> (unit -> 'a) -> 'a t

spaw ~on f runs f() on the given runner on, and return a future that will hold its result.

val reify_error : 'a t -> 'a or_error t

reify_error fut turns a failing future into a non-failing one that contain Error (exn, bt). A non-failing future returning x is turned into Ok x

  • since NEXT_RELEASE
val map : ?on:Runner.t -> f:('a -> 'b) -> 'a t -> 'b t

map ?on ~f fut returns a new future fut2 that resolves with f x if fut resolved with x; and fails with e if fut fails with e or f x raises e.

  • parameter on

    if provided, f runs on the given runner

val bind : ?on:Runner.t -> f:('a -> 'b t) -> 'a t -> 'b t

bind ?on ~f fut returns a new future fut2 that resolves like the future f x if fut resolved with x; and fails with e if fut fails with e or f x raises e.

  • parameter on

    if provided, f runs on the given runner

val bind_reify_error : ?on:Runner.t -> f:('a or_error -> 'b t) -> 'a t -> 'b t

bind_reify_error ?on ~f fut returns a new future fut2 that resolves like the future f (Ok x) if fut resolved with x; and resolves like the future f (Error (exn, bt)) if fut fails with exn and backtrace bt.

  • parameter on

    if provided, f runs on the given runner

  • since NEXT_RELEASE
val join : ?on:Runner.t -> 'a t t -> 'a t

join fut is fut >>= Fun.id. It joins the inner layer of the future.

  • since 0.2
val both : 'a t -> 'b t -> ('a * 'b) t

both a b succeeds with x, y if a succeeds with x and b succeeds with y, or fails if any of them fails.

val choose : 'a t -> 'b t -> ('a, 'b) Either.t t

choose a b succeeds Left x or Right y if a succeeds with x or b succeeds with y, or fails if both of them fails. If they both succeed, it is not specified which result is used.

val choose_same : 'a t -> 'a t -> 'a t

choose_same a b succeeds with the value of one of a or b if they succeed, or fails if both fail. If they both succeed, it is not specified which result is used.

val join_array : 'a t array -> 'a array t

Wait for all the futures in the array. Fails if any future fails.

val join_list : 'a t list -> 'a list t

Wait for all the futures in the list. Fails if any future fails.

val wait_array : _ t array -> unit t

wait_array arr waits for all futures in arr to resolve. It discards the individual results of futures in arr. It fails if any future fails.

val wait_list : _ t list -> unit t

wait_list l waits for all futures in l to resolve. It discards the individual results of futures in l. It fails if any future fails.

val for_ : on:Runner.t -> int -> (int -> unit) -> unit t

for_ ~on n f runs f 0, f 1, …, f (n-1) on the runner, and returns a future that resolves when all the tasks have resolved, or fails as soon as one task has failed.

val for_array : on:Runner.t -> 'a array -> (int -> 'a -> unit) -> unit t

for_array ~on arr f runs f 0 arr.(0), …, f (n-1) arr.(n-1) in the runner (where n = Array.length arr), and returns a future that resolves when all the tasks are done, or fails if any of them fails.

  • since 0.2
val for_list : on:Runner.t -> 'a list -> ('a -> unit) -> unit t

for_list ~on l f is like for_array ~on (Array.of_list l) f.

  • since 0.2

Await

NOTE This is only available on OCaml 5.

val await : 'a t -> 'a

await fut suspends the current tasks until fut is fulfilled, then resumes the task on this same runner.

  • since 0.3

This must only be run from inside the runner itself. The runner must support Suspend_. NOTE: only on OCaml 5.x

Blocking

val wait_block : 'a t -> 'a or_error

wait_block fut blocks the current thread until fut is resolved, and returns its value.

NOTE: A word of warning: this will monopolize the calling thread until the future resolves. This can also easily cause deadlocks, if enough threads in a pool call wait_block on futures running on the same pool or a pool depending on it.

A good rule to avoid deadlocks is to run this from outside of any pool, or to have an acyclic order between pools where wait_block is only called from a pool on futures evaluated in a pool that comes lower in the hierarchy. If this rule is broken, it is possible for all threads in a pool to wait for futures that can only make progress on these same threads, hence the deadlock.

val wait_block_exn : 'a t -> 'a

Same as wait_block but re-raises the exception if the future failed.

module type INFIX = sig ... end

Operators that run on the same thread as the first future.

include INFIX
val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
module Infix (_ : sig ... end) : INFIX

Make infix combinators, with intermediate computations running on the given pool.

val infix : Runner.t -> (module INFIX)

infix runner makes a new infix module with intermediate computations running on the given runner..

  • since 0.2
\ No newline at end of file diff --git a/moonpool/Moonpool/Fut/module-type-INFIX/index.html b/moonpool/Moonpool/Fut/module-type-INFIX/index.html index 6a72c3c0..83af2098 100644 --- a/moonpool/Moonpool/Fut/module-type-INFIX/index.html +++ b/moonpool/Moonpool/Fut/module-type-INFIX/index.html @@ -1,2 +1,2 @@ -INFIX (moonpool.Moonpool.Fut.INFIX)

Module type Fut.INFIX

val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
\ No newline at end of file +INFIX (moonpool.Moonpool.Fut.INFIX)

Module type Fut.INFIX

val (>|=) : 'a t -> ('a -> 'b) -> 'b t
val (>>=) : 'a t -> ('a -> 'b t) -> 'b t
val let+ : 'a t -> ('a -> 'b) -> 'b t
val and+ : 'a t -> 'b t -> ('a * 'b) t
val let* : 'a t -> ('a -> 'b t) -> 'b t
val and* : 'a t -> 'b t -> ('a * 'b) t
\ No newline at end of file diff --git a/moonpool/Moonpool/Lock/index.html b/moonpool/Moonpool/Lock/index.html new file mode 100644 index 00000000..8f0a11ca --- /dev/null +++ b/moonpool/Moonpool/Lock/index.html @@ -0,0 +1,2 @@ + +Lock (moonpool.Moonpool.Lock)

Module Moonpool.Lock

Mutex-protected resource.

type 'a t

A value protected by a mutex

val create : 'a -> 'a t

Create a new protected value.

val with_ : 'a t -> ('a -> 'b) -> 'b

with_ l f runs f x where x is the value protected with the lock l, in a critical section. If f x fails, with_lock l f fails too but the lock is released.

val update : 'a t -> ('a -> 'a) -> unit

update l f replaces the content x of l with f x, while protected by the mutex.

val update_map : 'a t -> ('a -> 'a * 'b) -> 'b

update_map l f computes x', y = f (get l), then puts x' in l and returns y, while protected by the mutex.

val mutex : _ t -> Stdlib.Mutex.t

Underlying mutex.

val get : 'a t -> 'a

Atomically get the value in the lock. The value that is returned isn't protected!

val set : 'a t -> 'a -> unit

Atomically set the value.

NOTE caution: using get and set as if this were a ref is an anti pattern and will not protect data against some race conditions.

\ No newline at end of file diff --git a/moonpool/Moonpool/Pool/For_runner_implementors/index.html b/moonpool/Moonpool/Pool/For_runner_implementors/index.html new file mode 100644 index 00000000..561a49f9 --- /dev/null +++ b/moonpool/Moonpool/Pool/For_runner_implementors/index.html @@ -0,0 +1,8 @@ + +For_runner_implementors (moonpool.Moonpool.Pool.For_runner_implementors)

Module Pool.For_runner_implementors

val create : + size:(unit -> int) -> + num_tasks:(unit -> int) -> + shutdown:(wait:bool -> unit -> unit) -> + run_async:(task -> unit) -> + unit -> + t

Create a new runner.

NOTE: the runner should support DLA and Suspend_ on OCaml 5.x, so that Fork_join and other 5.x features work properly.

\ No newline at end of file diff --git a/moonpool/Moonpool/Pool/index.html b/moonpool/Moonpool/Pool/index.html index 8bd9be2a..9e421933 100644 --- a/moonpool/Moonpool/Pool/index.html +++ b/moonpool/Moonpool/Pool/index.html @@ -1,15 +1,15 @@ -Pool (moonpool.Moonpool.Pool)

Module Moonpool.Pool

Thread pool.

type t

A pool of threads.

type thread_loop_wrapper = +Pool (moonpool.Moonpool.Pool)

Module Moonpool.Pool

Thread pool.

A pool of threads. The pool contains a fixed number of threads that wait for work items to come, process these, and loop.

This implements Runner.t since 0.3.

If a pool is no longer needed, shutdown can be used to signal all threads in it to stop (after they finish their work), and wait for them to stop.

The threads are distributed across a fixed domain pool (whose size is determined by Domain.recommended_domain_count on OCaml 5, and simply the single runtime on OCaml 4).

include module type of Runner
type task = unit -> unit
type t = private {
  1. run_async : task -> unit;
  2. shutdown : wait:bool -> unit -> unit;
  3. size : unit -> int;
  4. num_tasks : unit -> int;
}

A runner.

If a runner is no longer needed, shutdown can be used to signal all worker threads in it to stop (after they finish their work), and wait for them to stop.

The threads are distributed across a fixed domain pool (whose size is determined by Domain.recommended_domain_count on OCaml 5, and simple the single runtime on OCaml 4).

val size : t -> int

Number of threads/workers.

val num_tasks : t -> int

Current number of tasks. This is at best a snapshot, useful for metrics and debugging.

val shutdown : t -> unit

Shutdown the runner and wait for it to terminate. Idempotent.

val shutdown_without_waiting : t -> unit

Shutdown the pool, and do not wait for it to terminate. Idempotent.

exception Shutdown
val run_async : t -> task -> unit

run_async pool f schedules f for later execution on the runner in one of the threads. f() will run on one of the runner's worker threads/domains.

  • raises Shutdown

    if the runner was shut down before run_async was called.

val run_wait_block : t -> (unit -> 'a) -> 'a

run_wait_block pool f schedules f for later execution on the pool, like run_async. It then blocks the current thread until f() is done executing, and returns its result. If f() raises an exception, then run_wait_block pool f will raise it as well.

NOTE be careful with deadlocks (see notes in Fut.wait_block).

module For_runner_implementors : sig ... end
type thread_loop_wrapper = thread:Thread.t -> pool:t -> (unit -> unit) -> unit -> - unit

a thread wrapper f takes the current thread, the current pool, and the worker function loop : unit -> unit which is the worker's main loop, and returns a new loop function. By default it just returns the same loop function but it can be used to install tracing, effect handlers, etc.

val add_global_thread_loop_wrapper : thread_loop_wrapper -> unit

add_global_thread_loop_wrapper f installs f to be installed in every new pool worker thread, for all existing pools, and all new pools created with create. These wrappers accumulate: they all apply, but their order is not specified.

val create : + unit

A thread wrapper f takes the current thread, the current pool, and the worker function loop : unit -> unit which is the worker's main loop, and returns a new loop function. By default it just returns the same loop function but it can be used to install tracing, effect handlers, etc.

val add_global_thread_loop_wrapper : thread_loop_wrapper -> unit

add_global_thread_loop_wrapper f installs f to be installed in every new pool worker thread, for all existing pools, and all new pools created with create. These wrappers accumulate: they all apply, but their order is not specified.

type ('a, 'b) create_args = ?on_init_thread:(dom_id:int -> t_id:int -> unit -> unit) -> ?on_exit_thread:(dom_id:int -> t_id:int -> unit -> unit) -> ?thread_wrappers:thread_loop_wrapper list -> ?on_exn:(exn -> Stdlib.Printexc.raw_backtrace -> unit) -> + ?around_task:((t -> 'b) * (t -> 'b -> unit)) -> ?min:int -> ?per_domain:int -> - unit -> - t

create () makes a new thread pool.

  • parameter on_init_thread

    called at the beginning of each new thread in the pool.

  • parameter on_exit_thread

    called at the end of each thread in the pool

  • parameter thread_wrappers

    a list of thread_loop_wrapper functions to use for this pool's workers.

val shutdown : t -> unit

Shutdown the pool and wait for it to terminate. Idempotent.

val run : t -> (unit -> unit) -> unit

run pool f schedules f for later execution on the pool in one of the threads.

\ No newline at end of file + 'a

Arguments used in create. See create for explanations.

val create : (unit -> t, _) create_args

create () makes a new thread pool.

  • parameter on_init_thread

    called at the beginning of each new thread in the pool.

  • parameter min

    minimum size of the pool. It will be at least 1 internally, so 0 or negative values make no sense.

  • parameter per_domain

    is the number of threads allocated per domain in the fixed domain pool. The default value is 0, but setting, say, ~per_domain:2 means that if there are 8 domains (which might be the case on an 8-core machine) then the minimum size of the pool is 16. If both min and per_domain are specified, the maximum of both min and per_domain * num_of_domains is used.

  • parameter on_exit_thread

    called at the end of each thread in the pool

  • parameter thread_wrappers

    a list of thread_loop_wrapper functions to use for this pool's workers.

  • parameter around_task

    a pair of before, after, where before pool is called before a task is processed, on the worker thread about to run it, and returns x; and after pool x is called by the same thread after the task is over. (since 0.2)

val with_ : (unit -> (t -> 'a) -> 'a, _) create_args

with_ () f calls f pool, where pool is obtained via create. When f pool returns or fails, pool is shutdown and its resources are released.

Most parameters are the same as in create.

  • since 0.3
val run : t -> (unit -> unit) -> unit

deprecated alias to run_async

  • deprecated use run_async
\ No newline at end of file diff --git a/moonpool/Moonpool/Runner/For_runner_implementors/index.html b/moonpool/Moonpool/Runner/For_runner_implementors/index.html new file mode 100644 index 00000000..e42e7e46 --- /dev/null +++ b/moonpool/Moonpool/Runner/For_runner_implementors/index.html @@ -0,0 +1,8 @@ + +For_runner_implementors (moonpool.Moonpool.Runner.For_runner_implementors)

Module Runner.For_runner_implementors

val create : + size:(unit -> int) -> + num_tasks:(unit -> int) -> + shutdown:(wait:bool -> unit -> unit) -> + run_async:(task -> unit) -> + unit -> + t

Create a new runner.

NOTE: the runner should support DLA and Suspend_ on OCaml 5.x, so that Fork_join and other 5.x features work properly.

\ No newline at end of file diff --git a/moonpool/Moonpool/Runner/index.html b/moonpool/Moonpool/Runner/index.html new file mode 100644 index 00000000..226e5ac1 --- /dev/null +++ b/moonpool/Moonpool/Runner/index.html @@ -0,0 +1,2 @@ + +Runner (moonpool.Moonpool.Runner)

Module Moonpool.Runner

Abstract runner.

This provides an abstraction for running tasks in the background.

type task = unit -> unit
type t = private {
  1. run_async : task -> unit;
  2. shutdown : wait:bool -> unit -> unit;
  3. size : unit -> int;
  4. num_tasks : unit -> int;
}

A runner.

If a runner is no longer needed, shutdown can be used to signal all worker threads in it to stop (after they finish their work), and wait for them to stop.

The threads are distributed across a fixed domain pool (whose size is determined by Domain.recommended_domain_count on OCaml 5, and simple the single runtime on OCaml 4).

val size : t -> int

Number of threads/workers.

val num_tasks : t -> int

Current number of tasks. This is at best a snapshot, useful for metrics and debugging.

val shutdown : t -> unit

Shutdown the runner and wait for it to terminate. Idempotent.

val shutdown_without_waiting : t -> unit

Shutdown the pool, and do not wait for it to terminate. Idempotent.

exception Shutdown
val run_async : t -> task -> unit

run_async pool f schedules f for later execution on the runner in one of the threads. f() will run on one of the runner's worker threads/domains.

  • raises Shutdown

    if the runner was shut down before run_async was called.

val run_wait_block : t -> (unit -> 'a) -> 'a

run_wait_block pool f schedules f for later execution on the pool, like run_async. It then blocks the current thread until f() is done executing, and returns its result. If f() raises an exception, then run_wait_block pool f will raise it as well.

NOTE be careful with deadlocks (see notes in Fut.wait_block).

module For_runner_implementors : sig ... end
\ No newline at end of file diff --git a/moonpool/Moonpool/Suspend_/index.html b/moonpool/Moonpool/Suspend_/index.html new file mode 100644 index 00000000..3375bc1e --- /dev/null +++ b/moonpool/Moonpool/Suspend_/index.html @@ -0,0 +1,7 @@ + +Suspend_ (moonpool.Moonpool.Suspend_)

Module Moonpool.Suspend_

Suspensions.

This is only going to work on OCaml 5.x.

NOTE: this is not stable for now.

(Private) suspending tasks using Effects.

This module is an implementation detail of Moonpool and should not be used outside of it, except by experts to implement Runner.

type suspension = + (unit, exn * Stdlib.Printexc.raw_backtrace) Stdlib.result -> + unit

A suspended computation

type task = unit -> unit
type suspension_handler = {
  1. handle : run:(with_handler:bool -> task -> unit) -> suspension -> unit;
}

The handler that knows what to do with the suspended computation.

The handler is given two things:

  • the suspended computation (which can be resumed with a result eventually);
  • a run function that can be used to start tasks to perform some computation.

This means that a fork-join primitive, for example, can use a single call to suspend to:

  • suspend the caller until the fork-join is done
  • use run to start all the tasks. Typically run is called multiple times, which is where the "fork" part comes from. Each call to run potentially runs in parallel with the other calls. The calls must coordinate so that, once they are all done, the suspended caller is resumed with the aggregated result of the computation.
type Stdlib.Effect.t +=
  1. | Suspend : suspension_handler -> unit Stdlib.Effect.t
    (*

    The effect used to suspend the current thread and pass it, suspended, to the handler. The handler will ensure that the suspension is resumed later once some computation has been done.

    *)
val suspend : suspension_handler -> unit

suspend h jumps back to the nearest with_suspend and calls h.handle with the current continuation k and a task runner function.

val with_suspend : + run:(with_handler:bool -> task -> unit) -> + (unit -> unit) -> + unit

with_suspend ~run f runs f() in an environment where suspend will work. If f() suspends with suspension handler h, this calls h ~run k where k is the suspension.

This will not do anything on OCaml 4.x.

\ No newline at end of file diff --git a/moonpool/Moonpool/index.html b/moonpool/Moonpool/index.html index a3a72011..aec8a9d5 100644 --- a/moonpool/Moonpool/index.html +++ b/moonpool/Moonpool/index.html @@ -1,2 +1,2 @@ -Moonpool (moonpool.Moonpool)

Module Moonpool

Moonpool

A pool within a bigger pool (ie the ocean). Here, we're talking about pools of Thread.t which live within a fixed pool of Domain.t.

module Pool : sig ... end

Thread pool.

val start_thread_on_some_domain : ('a -> unit) -> 'a -> Thread.t

Similar to Thread.create, but it picks a background domain at random to run the thread. This ensures that we don't always pick the same domain to run all the various threads needed in an application (timers, event loops, etc.)

module Fut : sig ... end

Futures.

\ No newline at end of file +Moonpool (moonpool.Moonpool)

Module Moonpool

Moonpool

A pool within a bigger pool (ie the ocean). Here, we're talking about pools of Thread.t which live within a fixed pool of Domain.t.

module Pool : sig ... end

Thread pool.

module Runner : sig ... end

Abstract runner.

val start_thread_on_some_domain : ('a -> unit) -> 'a -> Thread.t

Similar to Thread.create, but it picks a background domain at random to run the thread. This ensures that we don't always pick the same domain to run all the various threads needed in an application (timers, event loops, etc.)

module Lock : sig ... end

Mutex-protected resource.

module Fut : sig ... end

Futures.

module Chan : sig ... end

Channels.

module Fork_join : sig ... end

Fork-join primitives.

module Blocking_queue : sig ... end

A simple blocking queue.

module Atomic : sig ... end

Atomic values.

Suspensions

module Suspend_ : sig ... end

Suspensions.

\ No newline at end of file diff --git a/moonpool/index.html b/moonpool/index.html index 172122a5..f3848f4f 100644 --- a/moonpool/index.html +++ b/moonpool/index.html @@ -1,2 +1,2 @@ -index (moonpool.index)

moonpool index

Library moonpool

The entry point of this library is the module: Moonpool.

\ No newline at end of file +index (moonpool.index)

moonpool index

Library moonpool

The entry point of this library is the module: Moonpool.

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82688fad18) + (c) 2006-2022 undefined and other contributors + License: BSD-3-Clause + */ +var hljs=function(){"use strict";var e={exports:{}};function t(e){ +return e instanceof Map?e.clear=e.delete=e.set=()=>{ +throw Error("map is read-only")}:e instanceof Set&&(e.add=e.clear=e.delete=()=>{ +throw Error("set is read-only") +}),Object.freeze(e),Object.getOwnPropertyNames(e).forEach((n=>{var i=e[n] +;"object"!=typeof i||Object.isFrozen(i)||t(i)})),e} +e.exports=t,e.exports.default=t;class n{constructor(e){ +void 0===e.data&&(e.data={}),this.data=e.data,this.isMatchIgnored=!1} +ignoreMatch(){this.isMatchIgnored=!0}}function i(e){ +return e.replace(/&/g,"&").replace(//g,">").replace(/"/g,""").replace(/'/g,"'") +}function r(e,...t){const n=Object.create(null);for(const t in e)n[t]=e[t] +;return t.forEach((e=>{for(const t in e)n[t]=e[t]})),n} +const s=e=>!!e.scope||e.sublanguage&&e.language;class o{constructor(e,t){ +this.buffer="",this.classPrefix=t.classPrefix,e.walk(this)}addText(e){ 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t||!t.unexpandable:Nn.hasOwnProperty(e)&&!Nn[e].primitive},e}(),Un={"\u0301":{text:"\\'",math:"\\acute"},"\u0300":{text:"\\`",math:"\\grave"},"\u0308":{text:'\\"',math:"\\ddot"},"\u0303":{text:"\\~",math:"\\tilde"},"\u0304":{text:"\\=",math:"\\bar"},"\u0306":{text:"\\u",math:"\\breve"},"\u030c":{text:"\\v",math:"\\check"},"\u0302":{text:"\\^",math:"\\hat"},"\u0307":{text:"\\.",math:"\\dot"},"\u030a":{text:"\\r",math:"\\mathring"},"\u030b":{text:"\\H"},"\u0327":{text:"\\c"}},Yn={"\xe1":"a\u0301","\xe0":"a\u0300","\xe4":"a\u0308","\u01df":"a\u0308\u0304","\xe3":"a\u0303","\u0101":"a\u0304","\u0103":"a\u0306","\u1eaf":"a\u0306\u0301","\u1eb1":"a\u0306\u0300","\u1eb5":"a\u0306\u0303","\u01ce":"a\u030c","\xe2":"a\u0302","\u1ea5":"a\u0302\u0301","\u1ea7":"a\u0302\u0300","\u1eab":"a\u0302\u0303","\u0227":"a\u0307","\u01e1":"a\u0307\u0304","\xe5":"a\u030a","\u01fb":"a\u030a\u0301","\u1e03":"b\u0307","\u0107":"c\u0301","\u1e09":"c\u0327\u0301","\u010d":"c\u030c","\u0109":"c\u0302","\u010b":"c\u0307","\xe7":"c\u0327","\u010f":"d\u030c","\u1e0b":"d\u0307","\u1e11":"d\u0327","\xe9":"e\u0301","\xe8":"e\u0300","\xeb":"e\u0308","\u1ebd":"e\u0303","\u0113":"e\u0304","\u1e17":"e\u0304\u0301","\u1e15":"e\u0304\u0300","\u0115":"e\u0306","\u1e1d":"e\u0327\u0306","\u011b":"e\u030c","\xea":"e\u0302","\u1ebf":"e\u0302\u0301","\u1ec1":"e\u0302\u0300","\u1ec5":"e\u0302\u0303","\u0117":"e\u0307","\u0229":"e\u0327","\u1e1f":"f\u0307","\u01f5":"g\u0301","\u1e21":"g\u0304","\u011f":"g\u0306","\u01e7":"g\u030c","\u011d":"g\u0302","\u0121":"g\u0307","\u0123":"g\u0327","\u1e27":"h\u0308","\u021f":"h\u030c","\u0125":"h\u0302","\u1e23":"h\u0307","\u1e29":"h\u0327","\xed":"i\u0301","\xec":"i\u0300","\xef":"i\u0308","\u1e2f":"i\u0308\u0301","\u0129":"i\u0303","\u012b":"i\u0304","\u012d":"i\u0306","\u01d0":"i\u030c","\xee":"i\u0302","\u01f0":"j\u030c","\u0135":"j\u0302","\u1e31":"k\u0301","\u01e9":"k\u030c","\u0137":"k\u0327","\u013a":"l\u0301","\u013e":"l\u030c","\u013c":"l\u0327","\u1e3f":"m\u0301","\u1e41":"m\u0307","\u0144":"n\u0301","\u01f9":"n\u0300","\xf1":"n\u0303","\u0148":"n\u030c","\u1e45":"n\u0307","\u0146":"n\u0327","\xf3":"o\u0301","\xf2":"o\u0300","\xf6":"o\u0308","\u022b":"o\u0308\u0304","\xf5":"o\u0303","\u1e4d":"o\u0303\u0301","\u1e4f":"o\u0303\u0308","\u022d":"o\u0303\u0304","\u014d":"o\u0304","\u1e53":"o\u0304\u0301","\u1e51":"o\u0304\u0300","\u014f":"o\u0306","\u01d2":"o\u030c","\xf4":"o\u0302","\u1ed1":"o\u0302\u0301","\u1ed3":"o\u0302\u0300","\u1ed7":"o\u0302\u0303","\u022f":"o\u0307","\u0231":"o\u0307\u0304","\u0151":"o\u030b","\u1e55":"p\u0301","\u1e57":"p\u0307","\u0155":"r\u0301","\u0159":"r\u030c","\u1e59":"r\u0307","\u0157":"r\u0327","\u015b":"s\u0301","\u1e65":"s\u0301\u0307","\u0161":"s\u030c","\u1e67":"s\u030c\u0307","\u015d":"s\u0302","\u1e61":"s\u0307","\u015f":"s\u0327","\u1e97":"t\u0308","\u0165":"t\u030c","\u1e6b":"t\u0307","\u0163":"t\u0327","\xfa":"u\u0301","\xf9":"u\u0300","\xfc":"u\u0308","\u01d8":"u\u0308\u0301","\u01dc":"u\u0308\u0300","\u01d6":"u\u0308\u0304","\u01da":"u\u0308\u030c","\u0169":"u\u0303","\u1e79":"u\u0303\u0301","\u016b":"u\u0304","\u1e7b":"u\u0304\u0308","\u016d":"u\u0306","\u01d4":"u\u030c","\xfb":"u\u0302","\u016f":"u\u030a","\u0171":"u\u030b","\u1e7d":"v\u0303","\u1e83":"w\u0301","\u1e81":"w\u0300","\u1e85":"w\u0308","\u0175":"w\u0302","\u1e87":"w\u0307","\u1e98":"w\u030a","\u1e8d":"x\u0308","\u1e8b":"x\u0307","\xfd":"y\u0301","\u1ef3":"y\u0300","\xff":"y\u0308","\u1ef9":"y\u0303","\u0233":"y\u0304","\u0177":"y\u0302","\u1e8f":"y\u0307","\u1e99":"y\u030a","\u017a":"z\u0301","\u017e":"z\u030c","\u1e91":"z\u0302","\u017c":"z\u0307","\xc1":"A\u0301","\xc0":"A\u0300","\xc4":"A\u0308","\u01de":"A\u0308\u0304","\xc3":"A\u0303","\u0100":"A\u0304","\u0102":"A\u0306","\u1eae":"A\u0306\u0301","\u1eb0":"A\u0306\u0300","\u1eb4":"A\u0306\u0303","\u01cd":"A\u030c","\xc2":"A\u0302","\u1ea4":"A\u0302\u0301","\u1ea6":"A\u0302\u0300","\u1eaa":"A\u0302\u0303","\u0226":"A\u0307","\u01e0":"A\u0307\u0304","\xc5":"A\u030a","\u01fa":"A\u030a\u0301","\u1e02":"B\u0307","\u0106":"C\u0301","\u1e08":"C\u0327\u0301","\u010c":"C\u030c","\u0108":"C\u0302","\u010a":"C\u0307","\xc7":"C\u0327","\u010e":"D\u030c","\u1e0a":"D\u0307","\u1e10":"D\u0327","\xc9":"E\u0301","\xc8":"E\u0300","\xcb":"E\u0308","\u1ebc":"E\u0303","\u0112":"E\u0304","\u1e16":"E\u0304\u0301","\u1e14":"E\u0304\u0300","\u0114":"E\u0306","\u1e1c":"E\u0327\u0306","\u011a":"E\u030c","\xca":"E\u0302","\u1ebe":"E\u0302\u0301","\u1ec0":"E\u0302\u0300","\u1ec4":"E\u0302\u0303","\u0116":"E\u0307","\u0228":"E\u0327","\u1e1e":"F\u0307","\u01f4":"G\u0301","\u1e20":"G\u0304","\u011e":"G\u0306","\u01e6":"G\u030c","\u011c":"G\u0302","\u0120":"G\u0307","\u0122":"G\u0327","\u1e26":"H\u0308","\u021e":"H\u030c","\u0124":"H\u0302","\u1e22":"H\u0307","\u1e28":"H\u0327","\xcd":"I\u0301","\xcc":"I\u0300","\xcf":"I\u0308","\u1e2e":"I\u0308\u0301","\u0128":"I\u0303","\u012a":"I\u0304","\u012c":"I\u0306","\u01cf":"I\u030c","\xce":"I\u0302","\u0130":"I\u0307","\u0134":"J\u0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e(e,t){this.mode=void 0,this.gullet=void 0,this.settings=void 0,this.leftrightDepth=void 0,this.nextToken=void 0,this.mode="math",this.gullet=new Gn(e,t,this.mode),this.settings=t,this.leftrightDepth=0}var t=e.prototype;return t.expect=function(e,t){if(void 0===t&&(t=!0),this.fetch().text!==e)throw new n("Expected '"+e+"', got '"+this.fetch().text+"'",this.fetch());t&&this.consume()},t.consume=function(){this.nextToken=null},t.fetch=function(){return null==this.nextToken&&(this.nextToken=this.gullet.expandNextToken()),this.nextToken},t.switchMode=function(e){this.mode=e,this.gullet.switchMode(e)},t.parse=function(){this.settings.globalGroup||this.gullet.beginGroup(),this.settings.colorIsTextColor&&this.gullet.macros.set("\\color","\\textcolor");try{var e=this.parseExpression(!1);return this.expect("EOF"),this.settings.globalGroup||this.gullet.endGroup(),e}finally{this.gullet.endGroups()}},t.subparse=function(e){var t=this.nextToken;this.consume(),this.gullet.pushToken(new Dr("}")),this.gullet.pushTokens(e);var r=this.parseExpression(!1);return this.expect("}"),this.nextToken=t,r},t.parseExpression=function(t,r){for(var n=[];;){"math"===this.mode&&this.consumeSpaces();var a=this.fetch();if(-1!==e.endOfExpression.indexOf(a.text))break;if(r&&a.text===r)break;if(t&&Nn[a.text]&&Nn[a.text].infix)break;var i=this.parseAtom(r);if(!i)break;"internal"!==i.type&&n.push(i)}return"text"===this.mode&&this.formLigatures(n),this.handleInfixNodes(n)},t.handleInfixNodes=function(e){for(var t,r=-1,a=0;a=0&&this.settings.reportNonstrict("unicodeTextInMathMode",'Latin-1/Unicode text character "'+t[0]+'" used in math mode',e);var s,l=ae[this.mode][t].group,h=Lr.range(e);if(te.hasOwnProperty(l)){var m=l;s={type:"atom",mode:this.mode,family:m,loc:h,text:t}}else s={type:l,mode:this.mode,loc:h,text:t};i=s}else{if(!(t.charCodeAt(0)>=128))return null;this.settings.strict&&(S(t.charCodeAt(0))?"math"===this.mode&&this.settings.reportNonstrict("unicodeTextInMathMode",'Unicode text character "'+t[0]+'" used in math mode',e):this.settings.reportNonstrict("unknownSymbol",'Unrecognized Unicode character "'+t[0]+'" ('+t.charCodeAt(0)+")",e)),i={type:"textord",mode:"text",loc:Lr.range(e),text:t}}if(this.consume(),o)for(var c=0;cli { + margin-left: 22px; +} + +ol>li { + margin-left: 27.2px; +} + +li>*:first-child { + margin-top: 0 +} + +/* Text alignements, this should be forbidden. */ + +.left { + text-align: left; +} + +.right { + text-align: right; +} + +.center { + text-align: center; +} + +/* Links and anchors */ + +a { + text-decoration: none; + color: var(--link-color); +} + +a:hover { + box-shadow: 0 1px 0 0 var(--link-color); +} + +/* Linked highlight */ +*:target { + background-color: var(--target-background) !important; + box-shadow: 0 0px 0 1px var(--target-shadow) !important; + border-radius: 1px; +} + +*:hover > a.anchor { + visibility: visible; +} + +a.anchor:before { + content: "#"; +} + +a.anchor:hover { + box-shadow: none; + text-decoration: none; + color: var(--anchor-hover); +} + +a.anchor { + visibility: hidden; + position: absolute; + /* top: 0px; */ + /* margin-left: -3ex; */ + margin-left: -1.3em; + font-weight: normal; + font-style: normal; + padding-right: 0.4em; + padding-left: 0.4em; + /* To remain selectable */ + color: var(--anchor-color); +} + +.spec > a.anchor { + margin-left: -2.3em; + padding-right: 0.9em; +} + +.xref-unresolved { + color: #2C94BD; +} +.xref-unresolved:hover { + box-shadow: 0 1px 0 0 var(--xref-shadow); +} + +/* Section and document divisions. + Until at least 4.03 many of the modules of the stdlib start at .h7, + we restart the sequence there like h2 */ + +h1, h2, h3, h4, h5, h6, .h7, .h8, .h9, .h10 { + font-family: "Fira Sans", Helvetica, Arial, sans-serif; + font-weight: 400; + padding-top: 0.1em; + line-height: 1.2; + overflow-wrap: break-word; +} + +h1 { + font-weight: 500; + font-size: 2.441em; +} + +h1 { + font-weight: 500; + font-size: 1.953em; + box-shadow: 0 1px 0 0 var(--header-shadow); +} + +h2 { + font-size: 1.563em; +} + +h3 { + font-size: 1.25em; +} + +small, .font_small { + font-size: 0.8em; +} + +h1 code, h1 tt { + font-size: inherit; + font-weight: inherit; +} + +h2 code, h2 tt { + font-size: inherit; + font-weight: inherit; +} + +h3 code, h3 tt { + font-size: inherit; + font-weight: inherit; +} + +h3 code, h3 tt { + font-size: inherit; + font-weight: inherit; +} + +h4 { + font-size: 1.12em; +} + +/* Comment delimiters, hidden but accessible to screen readers and + selected for copy/pasting */ + +/* Taken from bootstrap */ +/* See also https://stackoverflow.com/a/27769435/4220738 */ +.comment-delim { + position: absolute; + width: 1px; + height: 1px; + padding: 0; + margin: -1px; + overflow: hidden; + clip: rect(0, 0, 0, 0); + white-space: nowrap; + border: 0; +} + +/* Preformatted and code */ + +tt, code, pre { + font-family: "Fira Mono", courier; + font-weight: 400; +} + +pre { + padding: 0.1em; + border: 1px solid var(--pre-border-color); + border-radius: 5px; + overflow-x: auto; +} + +p code, +li code { + background-color: var(--li-code-background); + color: var(--li-code-color); + border-radius: 3px; + padding: 0 0.3ex; +} + +p a > code { + color: var(--link-color); +} + +code { + white-space: pre-wrap; +} + +/* Code blocks (e.g. Examples) */ + +pre code { + font-size: 0.893rem; +} + +/* Code lexemes */ + +.keyword { + font-weight: 500; +} + +.arrow { white-space: nowrap } + +/* Module member specification */ + +.spec { + background-color: var(--spec-summary-background); + border-radius: 3px; + border-left: 4px solid var(--spec-summary-border-color); + border-right: 5px solid transparent; + padding: 0.35em 0.5em; +} + +li:not(:last-child) > .def-doc { + margin-bottom: 15px; +} + +/* Spacing between items */ +div.odoc-spec,.odoc-include { + margin-bottom: 2em; +} + +.spec.type .variant p, .spec.type .record p { + margin: 5px; +} + +.spec.type .variant, .spec.type .record { + margin-left: 2ch; + list-style: none; + display: flex; + flex-wrap: wrap; + row-gap: 4px; +} + +.spec.type .record > code, .spec.type .variant > code { + min-width: 40%; +} + +.spec.type > ol { + margin-top: 0; + margin-bottom: 0; +} + +.spec.type .record > .def-doc, .spec.type .variant > .def-doc { + min-width:50%; + padding: 0.25em 0.5em; + margin-left: 10%; + border-radius: 3px; + flex-grow:1; + background: var(--main-background); + box-shadow: 2px 2px 4px lightgrey; +} + +div.def { + margin-top: 0; + text-indent: -2ex; + padding-left: 2ex; +} + +div.def-doc>*:first-child { + margin-top: 0; +} + +/* Collapsible inlined include and module */ + +.odoc-include details { + position: relative; +} + +.odoc-include.shadowed-include { + display: none; +} + +.odoc-include details:after { + z-index: -100; + display: block; + content: " "; + position: absolute; + border-radius: 0 1ex 1ex 0; + right: -20px; + top: 1px; + bottom: 1px; + width: 15px; + background: var(--spec-details-after-background, rgba(0, 4, 15, 0.05)); + box-shadow: 0 0px 0 1px var(--spec-details-after-shadow, rgba(204, 204, 204, 0.53)); +} + +.odoc-include summary { + position: relative; + margin-bottom: 1em; + cursor: pointer; + outline: none; +} + +.odoc-include summary:hover { + background-color: var(--spec-summary-hover-background); +} + +/* FIXME: Does not work in Firefox. */ +.odoc-include summary::-webkit-details-marker { + color: #888; + transform: scaleX(-1); + position: absolute; + top: calc(50% - 5px); + height: 11px; + right: -29px; +} + +/* Records and variants FIXME */ + +div.def table { + text-indent: 0em; + padding: 0; + margin-left: -2ex; +} + +td.def { + padding-left: 2ex; +} + +td.def-doc *:first-child { + margin-top: 0em; +} + +/* Lists of @tags */ + +.at-tags { list-style-type: none; margin-left: -3ex; } +.at-tags li { padding-left: 3ex; text-indent: -3ex; } +.at-tags .at-tag { text-transform: capitalize } + +/* Lists of modules */ + +.modules { list-style-type: none; margin-left: -3ex; } +.modules li { padding-left: 3ex; text-indent: -3ex; margin-top: 5px } +.modules .synopsis { padding-left: 1ch; } + +/* Odig package index */ + +.packages { list-style-type: none; margin-left: -3ex; } +.packages li { padding-left: 3ex; text-indent: -3ex } +.packages li a.anchor { padding-right: 0.5ch; padding-left: 3ch; } +.packages .version { font-size: 10px; color: var(--by-name-version-color); } +.packages .synopsis { padding-left: 1ch } + +.by-name nav a { + text-transform: uppercase; + font-size: 18px; + margin-right: 1ex; + color: var(--by-name-nav-link-color,); + display: inline-block; +} + +.by-tag nav a { + margin-right: 1ex; + color: var(--by-name-nav-link-color); + display: inline-block; +} + +.by-tag ol { list-style-type: none; } +.by-tag ol.tags li { margin-left: 1ch; display: inline-block } +.by-tag td:first-child { text-transform: uppercase; } + +/* Odig package page */ + +.package nav { + display: inline; + font-size: 14px; + font-weight: normal; +} + +.package .version { + font-size: 14px; +} + +.package.info { + margin: 0; +} + +.package.info td:first-child { + font-style: italic; + padding-right: 2ex; +} + +.package.info ul { + list-style-type: none; + display: inline; + margin: 0; +} + +.package.info li { + display: inline-block; + margin: 0; + margin-right: 1ex; +} + +#info-authors li, #info-maintainers li { + display: block; +} + +/* Sidebar and TOC */ + +.odoc-toc:before { + display: block; + content: "Contents"; + text-transform: uppercase; + font-size: 1em; + margin: 1.414em 0 0.5em; + font-weight: 500; + color: var(--toc-before-color); + line-height: 1.2; +} + +.odoc-toc { + position: fixed; + top: 0px; + bottom: 0px; + left: 0px; + max-width: 30ex; + min-width: 26ex; + width: 20%; + background: var(--toc-background); + overflow: auto; + color: var(--toc-color); + padding-left: 2ex; + padding-right: 2ex; +} + +.odoc-toc ul li a { + font-family: "Fira Sans", sans-serif; + font-size: 0.95em; + color: var(--color); + font-weight: 400; + line-height: 1.6em; + display: block; +} + +.odoc-toc ul li a:hover { + box-shadow: none; + text-decoration: underline; +} + +/* First level titles */ + +.odoc-toc>ul>li>a { + font-weight: 500; +} + +.odoc-toc li ul { + margin: 0px; +} + +.odoc-toc ul { + list-style-type: none; +} + +.odoc-toc ul li { + margin: 0; +} +.odoc-toc>ul>li { + margin-bottom: 0.3em; +} + +.odoc-toc ul li li { + border-left: 1px solid var(--toc-list-border); + margin-left: 5px; + padding-left: 12px; +} + +/* Mobile adjustements. */ + +@media only screen and (max-width: 95ex) { + body.odoc { + margin: 2em; + } + .odoc-toc { + position: static; + width: auto; + min-width: unset; + max-width: unset; + border: none; + padding: 0.2em 1em; + border-radius: 5px; + margin-bottom: 2em; + } +} + +/* Print adjustements. */ + +@media print { + body { + color: black; + background: white; + } + body nav:first-child { + visibility: hidden; + } +} + +/* Syntax highlighting (based on github-gist) */ + +.hljs { + display: block; + background: var(--code-background); + padding: 0.5em; + color: var(--color); + overflow-x: auto; +} + +.hljs-comment, +.hljs-meta { + color: #969896; +} + +.hljs-string, +.hljs-variable, +.hljs-template-variable, +.hljs-strong, +.hljs-emphasis, +.hljs-quote { + color: #df5000; +} + +.hljs-keyword, +.hljs-selector-tag { + color: #a71d5d; +} + +.hljs-type, +.hljs-class .hljs-title { + color: #458; + font-weight: 500; +} + +.hljs-literal, +.hljs-symbol, +.hljs-bullet, +.hljs-attribute { + color: #0086b3; +} + +.hljs-section, +.hljs-name { + color: #63a35c; +} + +.hljs-tag { + color: #333333; +} + +.hljs-attr, +.hljs-selector-id, +.hljs-selector-class, +.hljs-selector-attr, +.hljs-selector-pseudo { + color: #795da3; +} + +.hljs-addition { + color: #55a532; + background-color: #eaffea; +} + +.hljs-deletion { + color: #bd2c00; + background-color: #ffecec; +} + +.hljs-link { + text-decoration: underline; +} + +/*--------------------------------------------------------------------------- + Copyright (c) 2016 The odoc contributors + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + ---------------------------------------------------------------------------*/