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84 Commits

Author SHA1 Message Date
Brian Anderson
dedfef4c4c Revert "wip" 
This reverts commit aeadc6269e.
 2011-12-20 20:57:04 -08:00
Brian Anderson
aeadc6269e wip 2011-12-20 20:15:09 -08:00
Brian Anderson
128621be97 rt: Remove rust_task::grow. Obsolete 2011-12-20 20:02:57 -08:00
Brian Anderson
784713ec68 rt: Add a canary value to the end of every stack 
Check it on upcall entry and exit, and on stack deletion
 2011-12-20 11:48:47 -08:00
Brian Anderson
bd6b80c972 rt: Get rid of the rethrow in upcall_fail 
Throwing in upcall_fail ends up running lots of code in the red zone. To avoid
it we have the personality function figure out which stack it's on and switch
as needed.
 2011-12-18 17:17:31 -08:00
Brian Anderson
4ac345939c rt: Cache an extra stack segment to avoid bad behavior at stack boundaries 2011-12-17 13:45:38 -08:00
Brian Anderson
5d1a1dc420 rt: Rename stk_seg.limit to stk_seg.end 
rust_task is using the word limit it two ways, so one has to change.
 2011-12-06 21:45:53 -08:00
Brian Anderson
9a738fd61d rt: Various tweaks to make __morestack unwinding work on linux 
When unwinding through __morestack the stack limit in the TLS is invalidated
and must be reset. Instead of actually landing at __morestack we're
just going to make all our Rust landing pads call upcall_reset_stack_limit,
which will find the stack segment that corresponds to the current stack
pointer and put the limit in the TLS.

Also massively expand the stack segment red zone to make more room for the
dynamic linker. Will fix in the future.
 2011-12-06 16:32:41 -08:00
Brian Anderson
6da1a3fcd6 rt: Refactor record_sp into task::record_stack_limit 2011-12-01 15:26:42 -08:00
Brian Anderson
f2de42c39a rt: Reorganize stack growth code 2011-11-30 20:31:33 -08:00
Brian Anderson
e6ef4d929c rt: Remove the stack pointer field of stk_seg 2011-11-30 20:31:33 -08:00
Brian Anderson
6bdf347418 rt: Make __morestack (without unwinding) work on 32-bit linux 2011-11-22 18:02:10 -08:00
Brian Anderson
1e58049da2 rt: Remove fail calls from rust_task::yield 2011-11-18 15:36:48 -08:00
Brian Anderson
0dfa1410d3 rt: Remove task::on_wakeup. Unused 2011-11-18 10:32:27 -08:00
Brian Anderson
d52888f0ba rt: Remove rust_task::yield. Unused 2011-11-18 10:32:27 -08:00
Brian Anderson
bae817efe6 rt: Remove rust_task::notify_tasks_wating_to_join 2011-11-16 17:22:14 -08:00
Niko Matsakis
26b0662fb8 fix alignment for chan_handle structs; rust equiv is translated 
to char[16], not struct{long,long}
 2011-11-16 15:16:42 -08:00
Niko Matsakis
b78c096ebc enum does not have a size consistent with a tag, so use unsigned long instead 2011-11-16 15:16:41 -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
5d1e321ecb rt: Remove rust_chan 2011-11-11 12:11:21 -08:00
Patrick Walton
c9003d301f Stub a __morestack implementation and stack segment allocation. Untested. 2011-10-31 14:20:56 -07:00
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
61afef29a1 rt: Add a RUST_TRACK_ORIGINS debug flag to help track down memory corruption 2011-09-23 11:42:20 -07:00
Patrick Walton
8c02adc630 rustc: Port the fn and obj traversal logic over from the GC branch. Doesn't actually do anything yet due to lack of support in trans. 2011-09-21 19:08:26 -07:00
Patrick Walton
77f0101edb rt: Add an on-the-side GC chain 2011-09-20 15:35:14 -07:00
Patrick Walton
307957710c rt: Remove the GC alloc chain 2011-09-20 14:20:16 -07:00
Patrick Walton
3632629acc rt: Introduce a self-describing box representation and functions to create and free them 2011-09-19 11:40:41 -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
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
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
Eric Holk
2f7c583bc1 Cleaning up task and comm exports, updating all the test cases. 2011-08-25 11:21:25 -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
5c6790519b Reducing the chances for race conditions in join. 2011-08-15 12:39:55 -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
b62e80c1f0 Atomic ref counting for chans. 2011-08-05 15:27:28 -07:00
Eric Holk
d1dbb99984 Removing proxies and message queues. 2011-07-29 18:54:59 -07:00
Eric Holk
279844ce9f Atomic reference counting for tasks. 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
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