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101 Commits

Author SHA1 Message Date
Brian Anderson
6657e729de Lock the new task's scheduler when creating a task 
Previously we were locking the spawning task's scheduler. I couldn't
see that that was protecting anything. The newborn_task list in the new task's
scheduler though was unprotected from concurrent access. So now we're locking
the new task's scheduler.
 2011-07-29 22:43:11 -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
a5fe66e706 Adding upcalls to to ref() and deref() tasks. This is the first step towards atomic reference counting of 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
d79afd7916 Improving move semantics for channel operations. 
This lets us un-XFAIL task-comm-10.rs.
 2011-07-21 11:51:22 -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
Patrick Walton
88574c3cea rustc: Implement interior string logging in DPS 2011-07-15 18:37:57 -07:00
Brian Anderson
c99e110119 Modify upcall_fail so that failing tasks relinquish control to the scheduler 
This is sufficient to let unsupervised tasks that don't allocate fail without
crashing or leaking.
 2011-07-14 18:49:18 -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
336a4df778 Remove 'Nop.' comments, add emacs lines, remove obsolete file. 2011-07-13 14:03:18 -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
Patrick Walton
a9b77a5011 rt: Remove the locks around upcall_shared_malloc and upcall_shared_free 2011-07-12 11:53:45 -07:00
Patrick Walton
7efb942639 rt: Remove the now-unused upcall_ivec_resize and upcall_ivec_spill, which allocated from the wrong heap 2011-07-10 01:30:45 -07:00
Eric Holk
8acadb17c2 Work on debugging race conditions. 
Ports and channels have been moved to the kernel pool, since they've
been known to outlive their associated task. This probably isn't the
right thing to do, the life cycle needs fixed instead.

Some refactorying in memory_region.cpp. Added a helper function to
increment and decrement the allocation counter. This makes it easier
to switch between atomic and non-atomic increments. Using atomic
increments for now, although this still does not fix the problem.
 2011-07-07 18:22:27 -07:00
Eric Holk
a0f45f4456 Removing most of the locks in rust_upcall.cpp and elsewhere. 2011-07-07 18:22:27 -07:00
Rob Arnold
f6117173c9 Allocate rust_ivec buffers out of the kernel pool 
The duplication of upcalls is due to the fact that the runtime is
shared between stage0/rustc and stage1/rustc. Once snapshots are
updated, they should be de-duplicated.
 2011-07-06 20:41:24 -07:00
Patrick Walton
91eb63eaee rt: Add a stack check to upcall_get_type_desc 2011-07-06 15:07:04 -07:00
Rob Arnold
73cc624e8e Move the channel destroy code into rust_chan. 
This lets native code more easily destroy channels since directly deleting a
channel is not always the right way to destroy it.
 2011-07-01 16:59:10 -07:00
Rob Arnold
09921cf86f Move channel cloning logic into a method on rust_chan. 
This will allow us to more easily clone channels from native code.
 2011-07-01 16:59:10 -07:00
Patrick Walton
be50cdd24a rt: Add room for the new fill slot when resizing interior vectors 2011-06-30 11:35:05 -07:00
Graydon Hoare
c796a8f24d Re-enable tidy (it was broken) and fix various non-tidy things. 2011-06-29 15:14:55 -07:00
Patrick Walton
a2ce532337 rt: Remove the lock around upcall_vec_append. Add a test case. Closes #156. 2011-06-29 10:33:51 -07:00
Patrick Walton
74f8eb51ae rustc: Move duplicate_heap_parts to copy glue; add a test case 2011-06-28 17:59:30 -07:00
Patrick Walton
dfcfef41df rustc: Rename take glue to copy glue 2011-06-28 16:52:59 -07:00
Eric Holk
866ee6ecb4 Re-enabling some tests. 2011-06-28 16:12:34 -07:00
Eric Holk
657e5a2bd5 Renamed what's left of rust_dom to rust_scheduler 2011-06-28 16:12:33 -07:00
Eric Holk
49a8cb34d2 Removed dom_owned, splitting things between task_owned and kernel_owned. Had to re-xfail a few tests brson recently un-xfailed. 2011-06-28 16:12:33 -07:00
Eric Holk
f6f945fed5 Moved thread management to rust_kernel. 2011-06-28 16:12:33 -07:00
Eric Holk
c6d8324830 There is only one domain per kernel now. 2011-06-28 16:12:33 -07:00
Michael Sullivan
99b4fff4d2 Properly handle the case where src==dst but we have to allocate a new vector. 2011-06-27 12:34:45 -07:00
Michael Sullivan
8ad7f3b56b Properly handle the case where src==dst in upcall_vec_append. 2011-06-27 12:34:44 -07:00
Graydon Hoare
bc9fa31618 A little tidying in rt. 2011-06-27 10:08:57 -07:00
Eric Holk
681c063ec0 Conservatively serialize nearly all upcalls. Successfuly ran make check with RUST_THREADS=8, so we're probably fairly safe now. In the future we can relax the synchronization to get better performance. 2011-06-27 09:58:39 -07:00
Eric Holk
6367bcf427 Fixed a few concurrency bugs. Still not perfect, but overall it seems much more reliable. 2011-06-27 09:58:39 -07:00
Eric Holk
a2dcd08cc2 Added string duplication to deep_copy. Closes #520. 2011-06-20 13:47:02 -07:00
Eric Holk
6ed6791df4 Removing dead upcall_join. Closes #509. 2011-06-16 12:23:13 -07:00
Michael Sullivan
bd8f6097a7 Get rid of old vec_append glue. 2011-06-16 11:58:29 -07:00
Eric Holk
67360ae618 Fixed a problem where spawn arguments were getting lost again. Also, fixed up stack alignment, which closes #496 2011-06-15 18:16:59 -07:00
Eric Holk
c4f9bd9470 Re-enabled join. 2011-06-15 18:16:59 -07:00
Patrick Walton
ac743cfcb0 Merge pull request #490 from msullivan/fix_vec_append 
Move the implementation of vec_append from llvm assembly to a regular upcall
 2011-06-14 18:32:04 -07:00
Patrick Walton
c6be352f73 rustc: Implement on-heap resizing for interior vectors 2011-06-14 18:23:13 -07:00
Michael Sullivan
95def699f1 Implement upcall_vec_append and use it for vector append. 2011-06-14 15:35:09 -07:00
Patrick Walton
355c417267 rustc: Add some interior vector spill code, untested as of yet 2011-06-13 19:27:04 -07:00
Patrick Walton
c3bf7d07e9 rustc: Implement simple interior vector append translation 2011-06-13 18:57:25 -07:00
Eric Holk
d1857d30fc This is the mega-ucontext commit. It replaces the task switching mechanism with a new one inspired by ucontext. It works under Linux, OS X and Windows, and is Valgrind clean on Linux and OS X (provided the runtime is built with gcc). 
This commit also moves yield and join to the standard library, as requested in #42. Join is currently a no-op though.
 2011-06-13 18:14:13 -07:00
Eric Holk
8cfc388d40 Switched calling conventions so that spawn with multiple arguments works. 2011-05-27 15:20:58 -07:00
Eric Holk
d49998f0ed Switching over to wrappers for spawning functions of multiple arguments. Doesn't quite work yet. 2011-05-27 15:20:58 -07:00