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Rev Age Author Path Log message Diff
4605 5603 d 3 h decky /branches/snapshot/ add task snapshoting branch  
4490 5631 d 21 h decky /trunk/kernel/ remove redundant index_t and count_t types (which were always quite ambiguous and not actually needed)  
2916 6018 d 21 h jermar /trunk/kernel/generic/src/ More formatting changes.  
2914 6018 d 22 h jermar /trunk/kernel/generic/src/synch/ Formatting improvements.  
2909 6019 d 0 h jermar /trunk/kernel/generic/src/synch/ timeouted vs. timed out  
2310 6389 d 22 h jermar /trunk/kernel/generic/ Cleanup the waitq_wakeup() interface.
Replace numeric constants (i.e. 0)
and boolean constants (i.e. false) with
more readable WAKEUP_FIRST. Also change the
type of the second argument of waitq_wakeup()
to a newly introduced type wakeup_mode_t.

Fix behaviour of waitq_wakeup() in case
that WAKEUP_ALL semantics is required
but no threads are sleeping in the wait
queue. This is a similar fix to that of
Jan Hudecek committed in the RCU branch,
but, IMHO, is more straightforward and
also doesn't eat up previous missed
wakeups.		  
2183 6422 d 0 h jermar /trunk/kernel/generic/ Continue to de-oversynchronize the kernel.
- replace as->refcount with an atomic counter; accesses to this
reference counter are not to be done when the as->lock mutex is held;
this gets us rid of mutex_lock_active();

Remove the possibility of a deadlock between TLB shootdown and asidlock.
- get rid of mutex_lock_active() on as->lock
- when locking the asidlock spinlock, always do it conditionally and with
preemption disabled; in the unsuccessful case, enable interrupts and try again
- there should be no deadlock between TLB shootdown and the as->lock mutexes
- PLEASE REVIEW !!!

Add DEADLOCK_PROBE's to places where we have spinlock_trylock() loops.		  
2109 6482 d 5 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.		  
2089 6489 d 3 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2087 6489 d 23 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6499 d 20 h jermar /trunk/ (c) versus (C)  
2067 6510 d 2 h jermar /trunk/kernel/ More formatting changes.  
1787 6689 d 22 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6696 d 23 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1757 6711 d 4 h jermar /kernel/trunk/ Cleanup of comments.  
1702 6718 d 2 h cejka /kernel/trunk/ Kernel doxygen comments updated.  
1681 6721 d 17 h jermar /kernel/trunk/generic/src/synch/ Avoid tricky race condition between waitq_wakeup() and the pair
of waitq_timeouted_sleep() and waitq_interrupt_sleep().
Mutual exclusion != Synchronization.		  
1593 6725 d 17 h jermar /kernel/trunk/generic/src/synch/ When interrupted from sleep, pending timeouts must be unregistered.  
1580 6726 d 9 h jermar /kernel/trunk/generic/src/ Update for task_kill().  
1579 6726 d 19 h jermar /kernel/trunk/generic/ Framework for task_kill().
Some pieces (e.g. implementation of ktask_cleanup() kernel thread and
task_destroy() function) are missing.
Changed locking order for task lock, threads_lock and thread lock from
threads_lock, thread lock, task lock to task lock, threads_lock, thread lock.		  
1502 6729 d 4 h jermar /kernel/trunk/ Replace nonblocking argument of waitq_sleep_timeout with flags that specify mode of operation.
Now a flag can be used to specify interruptible sleep.
Modify waitq_interrupt_sleep() to only interrupt threads that used this flag.
O		  
1467 6731 d 0 h jermar /kernel/trunk/generic/src/synch/ Allow usage of blocking synchronization primitives in functions that are also called during system initialization.  
1375 6743 d 5 h jermar /kernel/trunk/generic/ Fix race in condition variables.  
1288 6757 d 4 h jermar /kernel/trunk/ Complete implementation of copy_from_uspace() and copy_to_uspace()
for amd64 and ia32. Other architectures still compile and run,
but need to implement their own assembly-only memcpy(), memcpy_from_uspace(),
memcpy_to_uspace() and their failover parts. For these architectures
only dummy implementations are provided.		  
1248 6764 d 23 h jermar /kernel/trunk/ Add some @file doxygen comments and improve already existing comments.  
1229 6768 d 3 h jermar /kernel/trunk/ Remove the outdated TODO file.
Improve doxygen comments here and there.		  
1158 6783 d 1 h jermar /kernel/trunk/generic/ Replace list of all threads with B+tree of all threads.
Add function thread_exists() for querying existence of thread.		  
1156 6783 d 2 h jermar /kernel/trunk/generic/ Sleeping in a wait queue can be now interrupted with
waitq_interrupt_sleep().		  
1103 6801 d 4 h jermar /kernel/trunk/generic/src/ Remove extra before_thread_runs() calls.  
788 6845 d 22 h jermar /kernel/trunk/ Move list and fifo data types to adt/.  
615 6900 d 5 h palkovsky /kernel/trunk/ Cleanups to make it compile with -Wall. Did not catch everything yet.  
557 6906 d 3 h jermar /kernel/trunk/ Add comments describing locking rules for some locks.
Cleanup.		  
552 6906 d 18 h palkovsky /kernel/trunk/ Named spinlocks  
534 6908 d 21 h jermar / Rename HelenOS/SPARTAN to HelenOS/kernel again.  
532 6908 d 21 h jermar / Revert renaming of HelenOS/SPARTAN to HelenOS/kernel because of important pending patch.  
501 6921 d 1 h jermar / Rename HelenOS/SPARTAN to HelenOS/kernel.  
430 6941 d 18 h jermar /SPARTAN/trunk/ Move src/ and include/ to generic.  
414 6956 d 7 h jermar /SPARTAN/trunk/ Create generic context_save() and context_restore().
These two functions are defined inline and only call context_save_arch() and context_restore_arch(), respectively.
The main purpose of this is to enable centralized commenting of these important and tricky functions.		  
413 6956 d 17 h jermar /SPARTAN/trunk/ Rename cpu_priority_{high|low|restore|read} functions to interrupts_{disable|enable|restore|read}.
Rename pri_t to ipl_t (Interrupt Priority Level).
Rename thread_t::pri to thread_t::priority.		  
405 6962 d 19 h jermar /SPARTAN/trunk/src/ Doxygen comments fixes.