f76e6c39f6
rt: Fix lock_held_by_current_thread
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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
6b5f7865be
rt: Remove unused variable from lock_and_signal
2012-02-01 16:06:21 -08:00
a8943f3442
timeout_in_ns was renamed to timeout_in_ms.
2011-08-03 19:28:49 -07:00
7a2e9f4874
Sleep for a nonzero amount of time on Windows.
2011-08-03 18:21:19 -07:00
3d7016ae95
Updating to work on Windows.
2011-07-28 10:47:29 -07:00
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
5302cde188
Made task threads wait instead of sleep, so they can be woken up. This appears to give us much better parallel performance.
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Also, commented out one more unsafe log and updated rust_kernel.cpp to compile under g++
2011-07-28 10:47:28 -07:00
39151f2ad8
Prohibit trailing whitespace under 'tidy' script. Clean up all caught cases.
2011-07-13 15:44:09 -07:00
bc9fa31618
A little tidying in rt.
2011-06-27 10:08:57 -07:00
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
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
4bc773465f
Basic multithreading support. The infinite loops test successfully maxes out the CPU.
2011-06-27 09:58:39 -07:00
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).
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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
501201a431
Remove executable bit from lock_and_signal.cpp.
2011-06-09 12:30:57 -07:00
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
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
Brian Anderson