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124 Commits

Author SHA1 Message Date
Patrick Walton
b3cf0c4d1b Revert "rt: More work on morestack" 
This reverts commit ced0d4f15e.
 2011-11-14 16:20:53 -08:00
Patrick Walton
ced0d4f15e rt: More work on morestack 2011-11-14 16:17:08 -08:00
Brian Anderson
58e923de6e rt: Perform task notification before killing the parent task 2011-11-13 16:36:47 -08:00
Brian Anderson
3d9023fa4d rt: Take the task lock when dropping port refcounts 
Sucks, but otherwise there are races when one task drops the refcount to zero
followed by another bumping it again
 2011-11-11 16:11:31 -08:00
Brian Anderson
07771ec25b Fix run-fail/spawnfail 
Catch the case where a parent is killed immediately before it terminates
normally.
 2011-11-11 14:20:00 -08:00
Brian Anderson
2385deaa0d rt: Add locking invariants to rust_task 2011-11-11 12:11:21 -08:00
Brian Anderson
5d1e321ecb rt: Remove rust_chan 2011-11-11 12:11:21 -08:00
Brian Anderson
793da65a8e rt: Move rust_chan::send to rust_port::send 2011-11-10 17:53:19 -08:00
Patrick Walton
c9003d301f Stub a __morestack implementation and stack segment allocation. Untested. 2011-10-31 14:20:56 -07:00
Marijn Haverbeke
8124846b2c Get rid of taskpointer-passing throughout the compiler 
Only intrinsics still take a dummy taskptr. We'll have to do some
makefile stunts to snapshot a version without taskptrs-in-intrinsics.

Issue #466
 2011-10-20 14:22:17 +02:00
Marijn Haverbeke
e927df17f7 Remove spawn_wrap and main_wrap kludges 
This isn't needed now that our functions are cdecl (and was apparently
only still working by accident).

Issue #992
 2011-10-20 13:15:09 +02:00
Patrick Walton
5c973142df rt: Turn on cycle collection at task death; add a test case 2011-09-26 16:59:15 -07:00
Patrick Walton
ad19ab4c6f rt: Make the logic that moves environments between tasks update the GC alloc chain correctly 2011-09-26 16:59:15 -07:00
Patrick Walton
307957710c rt: Remove the GC alloc chain 2011-09-20 14:20:16 -07:00
Brian Anderson
25394950ae Handle the case where a child task tries to kill a parent while it is dying 
Still looks pretty racy
 2011-09-16 10:05:12 -07:00
Brian Anderson
a0ad9a42cd Unsupervise tasks before the scheduler kills them. Unblock before yield->fail 2011-09-14 17:05:35 -07:00
Brian Anderson
103197bc42 Make failure propagation to dead parents work 
The failure will basically go 'through' the dead parent and continue
propagating the failure (as if the child was reparented).
 2011-09-14 15:48:14 -07:00
Brian Anderson
9505d70513 Make linked task failure work again 2011-09-14 14:20:41 -07:00
Brian Anderson
6f6f36172b Remove unused task_exit function 
Issue #236
 2011-09-11 17:31:40 -07:00
Brian Anderson
c047cfb710 Unwind the stack on task failure 
When a task fails, we will throw an exception, then catch it at the bottom of
the stack.

On Windows we don't do this yet because the exception doesn't propagate
correctly.

No cleanups yet.

Issue #236
 2011-09-07 10:32:58 -07:00
Brian Anderson
c337fd5467 Child tasks take a ref to their parents 
This is so that when a child dies after the parent, it still holds a valid
pointer and can call supervisor->kill() safely.
 2011-09-07 10:32:58 -07:00
Brian Anderson
25ae3d655c Rewrite spawn yet again 
The motivation here is that the bottom of each stack needs to contain a C++
try/catch block so that we can unwind. This is already the case for main, but
not spawned tasks.

Issue #236
 2011-09-07 10:32:58 -07:00
Brian Anderson
bb08ffbaf4 Refactor task failure a bit 
Issue #236
 2011-09-07 10:32:58 -07:00
Brian Anderson
abdb6cd71b Rewrite reap_dead_tasks to never grab the sched lock before a task lock 
Doing so contradicts the locking order used everywhere else and causes
deadlocks.

Un-XFAIL task-perf-spawnalot

Closes #854
 2011-08-20 16:21:27 -07:00
Patrick Walton
d0171913aa rt: Remove rustboot's GC infrastructure 2011-08-19 19:17:05 -07:00
Eric Holk
ae89ea223d Making more of the rust_task structure directly accessible from Rust. 2011-08-17 14:42:40 -07:00
Patrick Walton
d8c5bd6195 rt: Implement obstacks, untested as of yet 2011-08-16 19:49:25 -07:00
Eric Holk
8686645aad New channel-based task status notifications. 2011-08-16 16:47:40 -07:00
Eric Holk
cf2def46c1 Removed trans_comm.rs from the compiler. Updating aio/sio to work with the new chan and port system, started on a networking module for the standard library. 2011-08-16 09:36:29 -07:00
Eric Holk
be7325073a Removed spawn and task from the parser. Updated all the tests except for the benchmarks. 2011-08-15 09:26:52 -07:00
Eric Holk
b9f1f77622 Fixed memory accounting and task stack creation bugs. 2011-08-15 09:26:51 -07:00
Eric Holk
b2dad8af31 Added a library version of spawn. Before long, we can remove the old version. 2011-08-15 09:26:51 -07:00
Eric Holk
04af99ecb0 First step towards port handles. 2011-08-15 09:26:51 -07:00
unknown
44bef5f2cb Introduced task handles. 
This is the new way to refer to tasks in rust-land. Currently all they
do is serve as a key to look up the old rust_task structure. Ideally
they won't be ref counted, but baby steps.
 2011-08-08 16:55:38 -07:00
Eric Holk
d1dbb99984 Removing proxies and message queues. 2011-07-29 18:54:59 -07:00
Brian Anderson
4ef1ec580a Do all runtime calls to getenv at initialization 
getenv is not threadsafe and (maybe as a result) it's randomly crashing with
CFLAGS=-g and RUST_THREADS=32. Calls from rust code are still on their
own.
 2011-07-28 12:23:01 -07:00
Eric Holk
279844ce9f Atomic reference counting for tasks. 2011-07-28 10:47:28 -07:00
Eric Holk
5302cde188 Made task threads wait instead of sleep, so they can be woken up. This appears to give us much better parallel performance. 
Also, commented out one more unsafe log and updated rust_kernel.cpp to compile under g++
 2011-07-28 10:47:28 -07:00
Eric Holk
e697a52359 Adding a function to stdlib to set the min stack size, for programs 
that absolutely will not succeed with a large default stack. This
should be removed once we have stack grown working.

Also updated word-count to succeed under the new test framework.
 2011-07-28 10:47:28 -07:00
Eric Holk
62bc6b5113 Per-thread scheduling. Closes #682. 
Tasks are spawned on a random thread. Currently they stay there, but
we should add task migration and load balancing in the future. This
should drammatically improve our task performance benchmarks.
 2011-07-28 10:47:28 -07:00
Eric Holk
b51f5c395c Made root_task no longer special. 2011-07-28 10:47:28 -07:00
Michael Sullivan
f33309502a Bump the stack size and make the RUST_MIN_STACK env variable accept hex values. 2011-07-21 14:05:51 -07:00
Eric Holk
3ae4dcd41e Lots of work on memory tracking and channels. 
We're trying to get closer to doing correct move semantics for channel
operations. This involves a lot of cleanup (such as removing the
unused sched parameter from rust_vec constructor) and making
circular_buffer kernel_owned.

Added tagging for memory allocations. This means we give a string tag
to everything we allocate. If we leak something and TRACK_ALLOCATIONS
is enabled, then it's much easier now to tell exactly what is leaking.
 2011-07-21 11:51:22 -07:00
Brian Anderson
ced8393f20 Modify task::join to indicate how the task terminated 
This involves sticking yet another field into the task structure
 2011-07-15 10:07:29 -07:00
Brian Anderson
4738cf83b0 Move the responsibility for process failure from tasks to the scheduler 
When the root task fails the process fails. Failures on other tasks propagate
up the task tree. Failures on non-root tasks without parents just
(theoretically) unwind and disappear.
 2011-07-14 17:44:39 -07:00
Graydon Hoare
39151f2ad8 Prohibit trailing whitespace under 'tidy' script. Clean up all caught cases. 2011-07-13 15:44:09 -07:00
Graydon Hoare
49116adbe9 Fix compile-command lines in rt. 2011-07-13 13:51:20 -07:00
Graydon Hoare
2e2951305d Remove obsolete nargs counts from runtime. 2011-07-13 13:43:35 -07:00
Graydon Hoare
01fc165517 Attempt to correct buggy win32 timer code (causing tinderbox failures). 2011-07-13 12:25:36 -07:00
Eric Holk
d7db25e8f6 Added an environment variable to override the minimum stack size. Closes #637. 2011-07-08 11:36:56 -07:00