3 commits

Author	SHA1	Message	Date
Ludovic Courtès	3e529bf02a	futures: Allow nested futures; put the main thread to work. ... * module/ice-9/futures.scm (%futures-waiting, %within-future?, %future-prompt): New variables. (let/ec): New macro. (process-future!): Run FUTURE's thunk in a prompt; capture FUTURE's continuation when it aborts, and add it to %FUTURES-WAITING. Set %WITHIN-FUTURE? in the dynamic extent of the call FUTURE's thunk. (process-futures): Move loop body to... (process-one-future): ... here. New procedure. (notify-completion): New procedure. (touch)[work, loop]: New procedures. When %WITHIN-FUTURE? and FUTURE is started, abort; if not %WITHIN-FUTURE, call `work' while waiting. When FUTURE is queued, call `work' too. * test-suite/tests/future.test ("nested futures"): New tests.	2012-11-21 23:33:30 +01:00
Ludovic Courtès	6c17f7bd71	futures: Support multiple-value returns. ... * module/ice-9/futures.scm (process-future!): Use `call-with-values' when invoking `(future-thunk future)'. * test-suite/tests/future.test ("futures")["multiple values"]: New test.	2010-12-16 23:45:24 +01:00
Ludovic Courtès	0d4e6ca38f	Add `(ice-9 futures)'. ... * doc/ref/api-scheduling.texi (Threads): Add short introduction. Mention the `threads' feature. Add cross-reference to futures. (Futures): New node. * module/Makefile.am (ICE_9_SOURCES): Add `ice-9/futures.scm'. * module/ice-9/futures.scm: New file. * test-suite/Makefile.am (SCM_TESTS): Add `tests/future.test'. * test-suite/tests/future.test: New file.	2010-12-03 00:38:29 +01:00