package lwt

  1. Overview
  2. Docs
Promises and event-driven I/O

Install

Dune Dependency

github.com Readme MIT License Edit opam file Versions (25)

Authors

  1. J
    Jérôme Vouillon
  2. J
    Jérémie Dimino

Maintainers

  1. Anton Bachin
  2. M
    Mauricio Fernandez <mfp@acm.org>
  3. S
    Simon Cruanes <simon.cruanes.2007@m4x.org>

Sources

4.2.1.tar.gz
sha256=6663be42156c7224c4d2c57842e669d99895dbeb87ebeb46deb90c5a0f0830c1
md5=9d648386ca0a9978eb9487de36b781cc

Description

A promise is a value that may become determined in the future.

Lwt provides typed, composable promises. Promises that are resolved by I/O are resolved by Lwt in parallel.

Meanwhile, OCaml code, including code creating and waiting on promises, runs in a single thread by default. This reduces the need for locks or other synchronization primitives. Code can be run in parallel on an opt-in basis.

Published: 02 Apr 2019

Dependencies (6)

  1. seq
  2. result
  3. ocaml >= "4.02.0" & < "4.12"
  4. mmap
  5. dune
  6. cppo build & >= "1.1.0"

Dev Dependencies (2)

  1. ocamlfind dev & >= "1.7.3-1"
  2. bisect_ppx dev & >= "1.3.0"

  1. 0install
  2. albatross
  3. alcotest-lwt
  4. alcotest-mirage
  5. ambient-context-lwt
  6. amqp-client >= "1.1.0"
  7. amqp-client-lwt
  8. angstrom-lwt-unix
  9. anthill
  10. anycache-lwt
  11. archi-lwt
  12. arp >= "2.3.1"
  13. arp-mirage
  14. awa-lwt
  15. awa-mirage < "0.2.0"
  16. aws-lwt
  17. aws-s3-lwt
  18. awsm-lwt
  19. azure-cosmos-db
  20. balancer
  21. bimage-lwt
  22. bistro
  23. brisk-reconciler
  24. brozip
  25. builder
  26. bun >= "0.3.3"
  27. cachet-lwt
  28. calculon
  29. caldav
  30. camltc
  31. canary
  32. capnp-rpc-lwt < "1.2.3"
  33. capnp-rpc-unix >= "0.9.0" & < "1.2.3"
  34. caqti-lwt < "2.0.1"
  35. carton-git < "0.7.2"
  36. carton-lwt < "1.0.0"
  37. catala-format >= "0.2.0"
  38. cf-lwt
  39. charrua-client >= "1.3.0"
  40. charrua-client-lwt
  41. charrua-client-mirage
  42. charrua-unix
  43. cmdtui-lambda-term
  44. cohttp-lwt < "6.0.0~alpha2"
  45. cohttp-lwt-jsoo != "6.1.0"
  46. cohttp-lwt-unix
  47. cohttp-mirage
  48. comby
  49. comby-semantic
  50. conan-lwt
  51. conduit-lwt < "7.0.0"
  52. conduit-lwt-unix < "7.0.0"
  53. cowabloga
  54. crunch >= "2.0.0"
  55. cstruct-lwt
  56. csv-lwt
  57. ctypes >= "0.15.0" & < "0.21.1"
  58. ctypes-foreign >= "0.21.1"
  59. curl_lwt
  60. current_docker < "0.6.4"
  61. current_examples < "0.6.4"
  62. current_git < "0.6.4"
  63. current_github < "0.6.4"
  64. current_gitlab < "0.6.4"
  65. current_ocluster < "0.2"
  66. current_slack < "0.6.4"
  67. current_web < "0.6.4"
  68. DkSDKFFIOCaml_Std
  69. dap
  70. data-encoding < "0.1.1"
  71. datakit-server
  72. devkit
  73. distributed-lwt
  74. dkim-lwt-unix
  75. dkim-mirage
  76. dlm
  77. dns-certify
  78. dns-cli >= "4.6.3"
  79. dns-client < "7.0.0"
  80. dns-client-lwt
  81. dns-client-mirage
  82. dns-forward
  83. dns-forward-lwt-unix
  84. dns-lwt
  85. dns-mirage
  86. dns-resolver
  87. dns-server
  88. dns-stub
  89. dnssd
  90. docker_hub
  91. dream
  92. dream-httpaf
  93. dream-pure
  94. dropbox
  95. dune >= "3.17.0"
  96. elasticsearch-cli
  97. emoji >= "2.0.0"
  98. ethernet
  99. ez_api
  100. ezcurl-lwt
  101. ezjsonm-lwt
  102. ezresto
  103. ezresto-directory
  104. faraday-lwt
  105. faraday-lwt-unix
  106. fat-filesystem
  107. fiber-lwt
  108. fswatch_lwt
  109. fuseau-lwt
  110. gdbprofiler
  111. git
  112. git-paf
  113. git-unix >= "3.0.0" & < "3.10.0"
  114. github
  115. github-hooks
  116. github-unix >= "4.4.0"
  117. gitlab-unix
  118. gluten-lwt < "0.4.0"
  119. gluten-lwt-unix < "0.4.0"
  120. gluten-mirage < "0.4.0"
  121. graphql-lwt
  122. gremlin
  123. gufo
  124. h1
  125. h1-lwt-unix
  126. h2-lwt < "0.10.0"
  127. h2-lwt-unix < "0.10.0"
  128. h2-mirage
  129. happy-eyeballs-lwt
  130. happy-eyeballs-mirage
  131. hiredis
  132. hl_yaml
  133. http-lwt-client
  134. http-multipart-formdata >= "2.0.0" & < "3.0.0"
  135. httpaf-lwt-unix
  136. httpun-lwt
  137. httpun-mirage
  138. httpun-ws-lwt
  139. hvsock
  140. i3ipc
  141. influxdb-lwt
  142. inotify >= "2.4"
  143. inquire < "0.3.0"
  144. interface-prime-lwt
  145. ip2location
  146. ip2locationio
  147. ip2whois
  148. ipv6-multicast-lwt
  149. irc-client-lwt
  150. irc-client-lwt-ssl
  151. irc-client-tls
  152. irmin < "2.7.0"
  153. irmin-bench < "2.7.0"
  154. irmin-chunk < "2.7.0"
  155. irmin-containers < "2.7.0"
  156. irmin-fs >= "2.3.0" & < "2.7.0"
  157. irmin-git >= "2.3.0" & < "2.7.0"
  158. irmin-graphql >= "2.3.0" & < "2.7.0"
  159. irmin-http >= "2.3.0" & < "2.7.0"
  160. irmin-indexeddb
  161. irmin-layers < "2.7.0"
  162. irmin-mem >= "2.3.0"
  163. irmin-mirage-git >= "2.3.0" & < "2.7.0"
  164. irmin-mirage-graphql >= "2.3.0" & < "2.7.0"
  165. irmin-pack < "2.7.0"
  166. irmin-test >= "2.3.0" & < "2.7.0"
  167. irmin-unix >= "2.3.0" & < "2.7.0"
  168. irmin-watcher
  169. joolog
  170. jose < "0.9.0"
  171. js_of_ocaml-lwt
  172. jsoo_broadcastchannel
  173. jsoo_storage
  174. jupyter
  175. jupyter-kernel
  176. kafka < "0.5"
  177. kafka_lwt
  178. kappa-library
  179. ke >= "0.5"
  180. kinetic-client
  181. kubecaml
  182. lablqml < "0.6"
  183. lambda-runtime
  184. lambda-term
  185. launchd
  186. learn-ocaml
  187. learn-ocaml-client
  188. letsencrypt
  189. letsencrypt-app
  190. letsencrypt-dns
  191. links < "0.9.5"
  192. lru_cache
  193. lwt-binio
  194. lwt-canceler
  195. lwt-dllist
  196. lwt-exit
  197. lwt-parallel
  198. lwt-pipe
  199. lwt-pipeline
  200. lwt-watcher
  201. lwt-zmq
  202. lwt_camlp4
  203. lwt_domain < "0.3.0"
  204. lwt_eio < "0.4"
  205. lwt_glib
  206. lwt_log
  207. lwt_named_threads
  208. lwt_ppx < "5.8.0"
  209. lwt_react
  210. lwt_ssl
  211. mariadb >= "1.2.0"
  212. markup = "0.7.6"
  213. markup-lwt
  214. mdx
  215. mechaml
  216. metrics-influx
  217. metrics-lwt
  218. metrics-mirage
  219. metrics-unix
  220. mindstorm-lwt
  221. mirage < "3.1.1"
  222. mirage-block >= "2.0.1"
  223. mirage-block-ccm
  224. mirage-block-combinators
  225. mirage-block-lwt
  226. mirage-block-ramdisk
  227. mirage-block-solo5
  228. mirage-block-unix < "2.8.3"
  229. mirage-block-xen
  230. mirage-bootvar-solo5
  231. mirage-bootvar-unix
  232. mirage-bootvar-xen >= "0.4.0"
  233. mirage-channel >= "4.0.1"
  234. mirage-channel-lwt
  235. mirage-clock-freestanding < "3.0.1"
  236. mirage-clock-lwt
  237. mirage-clock-unix >= "1.2.0" & < "3.0.1"
  238. mirage-console < "2.2.0" | >= "3.0.2"
  239. mirage-console-lwt
  240. mirage-console-solo5
  241. mirage-console-unix
  242. mirage-console-xen >= "5.0.0"
  243. mirage-console-xen-backend
  244. mirage-crypto-entropy
  245. mirage-crypto-rng >= "0.8.0" & < "0.11.0"
  246. mirage-crypto-rng-lwt
  247. mirage-crypto-rng-mirage >= "0.8.8"
  248. mirage-device >= "2.0.0"
  249. mirage-entropy
  250. mirage-flow >= "2.0.1"
  251. mirage-flow-combinators
  252. mirage-flow-lwt
  253. mirage-flow-rawlink
  254. mirage-flow-unix
  255. mirage-fs >= "3.0.1"
  256. mirage-fs-lwt
  257. mirage-fs-unix
  258. mirage-kv >= "3.0.1"
  259. mirage-kv-lwt
  260. mirage-kv-unix < "3.0.0"
  261. mirage-logs < "3.0.0"
  262. mirage-nat < "3.0.0"
  263. mirage-net >= "3.0.1"
  264. mirage-net-fd
  265. mirage-net-lwt
  266. mirage-net-macosx
  267. mirage-net-solo5
  268. mirage-net-unix
  269. mirage-net-xen
  270. mirage-os-shim
  271. mirage-profile
  272. mirage-protocols >= "4.0.1" & < "8.0.0"
  273. mirage-protocols-lwt
  274. mirage-qubes < "0.9.5"
  275. mirage-qubes-ipv4 < "0.9.5"
  276. mirage-random-stdlib >= "0.1.0"
  277. mirage-runtime >= "3.7.0"
  278. mirage-sleep
  279. mirage-solo5
  280. mirage-stack >= "2.0.1" & < "4.0.0"
  281. mirage-stack-lwt
  282. mirage-time >= "2.0.1"
  283. mirage-time-lwt
  284. mirage-time-unix
  285. mirage-types-lwt < "3.7.1"
  286. mirage-unix
  287. mirage-vnetif
  288. mirage-vnetif-stack
  289. mirage-xen
  290. moonpool-lwt
  291. mrmime >= "0.5.0"
  292. multipart-form-data
  293. multipart_form >= "0.2.0" & < "0.4.0"
  294. multipart_form-lwt < "0.6.0"
  295. mwt
  296. naboris < "0.1.1"
  297. named-pipe
  298. nbd
  299. nbd-tool
  300. nbd-unix
  301. netchannel
  302. nocrypto
  303. noise
  304. nottui-lwt
  305. nproc
  306. nsq
  307. obuilder < "0.4"
  308. obus < "1.2.1"
  309. ocaml-variants >= "4.00.1+mirage-unix" & < "4.00.1+open-types"
  310. ocluster < "0.2"
  311. ocluster-api < "0.2"
  312. ocplib-resto
  313. ocsigen-start >= "4.1.0" & < "4.7.0"
  314. ocsigenserver
  315. ocsipersist
  316. ocsipersist-dbm
  317. ocsipersist-lib
  318. ocsipersist-pgsql
  319. ocsipersist-sqlite
  320. odoc >= "2.0.0" & < "2.1.0"
  321. opam-compiler < "0.2.0"
  322. opam-publish = "0.3.5"
  323. opium < "0.19.0"
  324. opium_kernel
  325. opomodoro
  326. order-i3-xfce
  327. ordma
  328. osc-lwt
  329. oskel >= "0.3.0"
  330. ounit-lwt < "2.2.0"
  331. ounit2-lwt
  332. owork
  333. paf
  334. paf-cohttp
  335. passage
  336. pcap-format < "0.5.2"
  337. pgx_lwt
  338. pgx_lwt_mirage
  339. pgx_lwt_unix < "2.0"
  340. plotkicadsch
  341. ppx_defer >= "0.4.0"
  342. ppx_deriving_rpc
  343. ppx_rapper_lwt
  344. prof_spacetime
  345. prometheus
  346. prometheus-app
  347. promise_jsoo_lwt
  348. protocol-9p
  349. protocol-9p-unix
  350. qcow < "0.12.1"
  351. qcow-tool
  352. qcow-types
  353. qfs >= "0.5"
  354. quests
  355. rawlink < "2.1"
  356. rawlink-lwt
  357. redis-lwt
  358. resource-pooling
  359. resp
  360. resp-mirage >= "0.10.0"
  361. resp-unix >= "0.10.0"
  362. resto
  363. resto-cohttp-client
  364. resto-cohttp-self-serving-client
  365. resto-cohttp-server
  366. resto-directory
  367. riak
  368. ringo-lwt
  369. river
  370. rpc < "7.1.0"
  371. rpclib-js
  372. rpclib-lwt
  373. sanddb
  374. scgi
  375. sendmail-lwt
  376. sendmail-mirage
  377. serial
  378. session-cohttp-lwt
  379. session-cookie-lwt
  380. session-postgresql-lwt
  381. sessions
  382. shared-block-ring
  383. shared-memory-ring-lwt
  384. slacko
  385. slipshow
  386. smtml >= "0.3.1"
  387. speed
  388. spin < "0.6.0"
  389. stog < "0.19.0"
  390. syndic >= "1.4" & < "1.6.0"
  391. tar-mirage < "2.2.1"
  392. tar-unix < "3.0.0"
  393. tcpip
  394. telegraml
  395. tezos-p2p = "12.3"
  396. timmy-lwt
  397. tls < "0.16.0"
  398. tls-lwt < "0.17.4"
  399. tls-mirage
  400. tlstunnel
  401. tube
  402. tuntap < "2.0.0"
  403. twirp_cohttp_lwt_unix
  404. u2f
  405. uspf
  406. uspf-lwt
  407. uspf-mirage
  408. utop
  409. uwt
  410. vchan
  411. vchan-unix
  412. vchan-xen
  413. vercel
  414. vhd-format-lwt
  415. vmnet
  416. vpnkit
  417. vue-jsoo < "0.3"
  418. webauthn
  419. xen-evtchn
  420. xen-evtchn-unix
  421. xen-gnt
  422. xen-gnt-unix >= "4.0.2"
  423. xenstore < "2.4.0"
  424. xenstore_transport
  425. xlsx2csv
  426. zarr-lwt
  427. zbar
  428. zmq-lwt

Conflicts (1)

  1. ocaml-variants = "4.02.1+BER"
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