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62 commits

Author SHA1 Message Date
Brian Anderson
6bb0399df2 rt: Check the results of pthread calls 
The stage0 compiler is not working on an x86_64 debian wheezy instance and it
looks like maye pthread_create is failing
 2012-09-29 16:29:47 -07:00
Tim Chevalier
81ecd272d3 Comments only: TODOs to FIXME in the runtime 2012-07-12 19:06:08 -07:00
Brian Anderson
3d0826b5fc rt: Remove lock_free_queue. Unused. Issue #2701 2012-06-25 15:39:59 -07:00
Graydon Hoare
312faf31df Tag all remaining FIXMEs with bugs. Install rule in tidy script to enforce this. 2012-06-21 16:44:10 -07:00
Jon Morton
632a4c9326 Refactor includes structure, getting rid of rust_internal.h 
Many changes to code structure are included:
- removed TIME_SLICE_IN_MS
- removed sychronized_indexed_list
- removed region_owned
- kernel_owned move to kernel.h, task_owned moved to task.h
- global configs moved to rust_globals.h
- changed #pragma once to standard guard in rust_upcall.h
- got rid of memory.h
 2012-04-03 16:02:38 -07:00
Brian Anderson
e78396850d Merge remote-tracking branch 'brson/mainthread' 
Conflicts:
	src/rt/rust_sched_loop.cpp
	src/rt/rust_shape.cpp
	src/rt/rust_task.cpp
 2012-04-01 00:15:04 -07:00
Brian Anderson
21064637ed rt: Fix whitespace 2012-03-31 23:12:06 -07:00
Brian Anderson
a17097a57b rt: Make rust_sched_launcher hide it's thread implementation 2012-03-31 21:48:52 -07:00
Brian Anderson
c8dc6fcb4c Revert "rt: Remove lock_held_by_current_thread" 
Adds back the ability to make assertions about locks, but only under the
--enable-debug configuration

This reverts commit b247de6458.

Conflicts:

	src/rt/rust_sched_loop.cpp
 2012-03-31 19:51:29 -07:00
Graydon Hoare
2aaca455b9 Tidy up multiple declarations and STDC_FOO_MACROS guards in headers. 2012-03-28 14:26:51 -07:00
Brian Anderson
b247de6458 rt: Remove lock_held_by_current_thread 2012-03-18 17:03:35 -07:00
Brian Anderson
5c23d21e83 rt: Remove an incorrect assert in lock_and_signal 
This assert doesn't hold because it isn't made while holding the lock
 2012-03-13 16:12:38 -07:00
Brian Anderson
958c321083 rt: Fix the atomic get_ref_count method to avoid races 2012-03-05 19:39:56 -08:00
Chris Peterson
fed81c2cfc rt: Add some lock_and_signal assertions 
Assert that locks are not reentered on the same thread, unlocked by a
different thread, or deleted while locked.
 2012-02-19 23:15:35 -08:00
Chris Peterson
9f49293232 rt: Initialize Windows CRITICAL_SECTION with non-zero spin count 
If a CRITICAL_SECTION is not initialized with a spin count, it will
default to 0, even on multi-processor systems. MSDN suggests using
4000. On single-processor systems, the spin count parameter is ignored
and the critical section's spin count defaults to 0.

For Windows >= Vista, extra debug info is allocated for
CRITICAL_SECTIONs but not released in a timely manner. Consider using
InitializeCriticalSectionEx(CRITICAL_SECTION_NO_DEBUG_INFO).
 2012-02-19 23:13:31 -08:00
Chris Peterson
159dfd7c3b rt: Delete Windows CRITICAL_SECTION in dtor 2012-02-19 23:11:03 -08:00
Brian Anderson
8e55d3130a rt: Use 100k stacks for scheduler threads 2012-02-10 11:53:30 -08:00
Brian Anderson
81e1564a7d rt: Detach pthreads before exiting 
Joinable pthreads need to be either joined or detached and we no
longer join with the scheduler threads.
 2012-02-09 19:00:16 -08:00
Brian Anderson
5d8d591ffc rt: Remove sync::yield and sync::sleep 2012-02-09 19:00:16 -08:00
Brian Anderson
421c8db144 rt: Move rust_thread to its own files 2012-02-09 19:00:16 -08:00
Brian Anderson
6eafe5d772 rt: Remove is_running flag from rust_thread. Unused 2012-02-08 15:33:40 -08:00
Brian Anderson
1ea184285e rt: Change the win32 event object to an auto-reset event 
The way I read the docs, having this be a manual reset event means
that after the first time it's signalled it stays that way until reset,
and we never, ever reset it.
 2012-02-02 18:30:06 -08:00
Brian Anderson
3b4dd26ff1 rt: Remove lock_and_signal::signal_all 2012-02-02 18:29:03 -08:00
Brian Anderson
9c33f2c561 rt: Remove lock_and_signal::timed_wait 2012-02-02 18:25:49 -08:00
Brian Anderson
f76e6c39f6 rt: Fix lock_held_by_current_thread 
This simplifies the check for thread ownership by removing the _locked flag
and just comparing against the thread ID of the last thread to take the lock.
If the running thread took the lock _holding_thread will be equal to
pthread_self(); if _holding_thread is some other value then the running thread
does not have the lock.

Setting a pthread_t to 0 like this is not portable but should work on every
platform we are likely to care about for the near future.
 2012-02-01 16:06:58 -08:00
Brian Anderson
6b5f7865be rt: Remove unused variable from lock_and_signal 2012-02-01 16:06:21 -08:00
Erick Tryzelaar
a8943f3442 timeout_in_ns was renamed to timeout_in_ms. 2011-08-03 19:28:49 -07:00
Eric Holk
7a2e9f4874 Sleep for a nonzero amount of time on Windows. 2011-08-03 18:21:19 -07:00
Eric Holk
3d7016ae95 Updating to work on Windows. 2011-07-28 10:47:29 -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
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
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
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
01fc165517 Attempt to correct buggy win32 timer code (causing tinderbox failures). 2011-07-13 12:25:36 -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
111989a626 Removed what seems to be the last of the calls to rand(). Closes #582. 2011-07-06 11:50:25 -07:00
Eric Holk
b4a145e60f Added a nanosecond timer to time.rs, support for some floating point casts, and a commandline-driven mode for pfib.rs 2011-06-30 11:32:10 -07:00
Graydon Hoare
bc9fa31618 A little tidying in rt. 2011-06-27 10:08:57 -07:00
Eric Holk
022ebc198b Implementation mising features in lock_and_signal for Win32. Also lowered the minimum stack size to get the pfib benchmark to run without exhausting its address space on Windows. 2011-06-27 09:58:39 -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
4bc773465f Basic multithreading support. The infinite loops test successfully maxes out the CPU. 2011-06-27 09:58:39 -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
Erick Tryzelaar
501201a431 Remove executable bit from lock_and_signal.cpp. 2011-06-09 12:30:57 -07:00
Marijn Haverbeke
009e01dbe7 add FIXME related to the -fno-strict-aliasing workaround 2011-04-08 02:23:33 +02:00
Patrick Walton
28d43678b6 Add a virtual destructor to rust_thread in sync.h, to quiet the compiler 2010-10-20 10:32:36 -07:00
Michael Bebenita
1bd331b7aa Fixed deadlock caused by the message pump not being notified of new message sends. 2010-09-16 00:51:03 -07:00
Michael Bebenita
a493350eb5 Cleanup, refactoring, and some runtime tests. 2010-09-10 14:38:31 -07:00
Michael Bebenita
f985fded3e Added lock_and_signal::signal_all(), and made the rust_kernel::join() use wait instead of yield. 2010-09-10 14:38:31 -07:00
Graydon Hoare
616b7afb72 Tidy up the sync dir, remove dead or mis-designed code in favour of OS primitives, switch rust_kernel to use a lock/signal pair and wait rather than spin. 2010-09-08 19:13:49 -07:00