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Rev Age Author Path Log message Diff
3988 5652 d 11 h svoboda /trunk/kernel/generic/src/proc/ Fix misaligned columns (whoops).  
3987 5652 d 12 h svoboda /trunk/kernel/ Read command line for multiboot modules on ia32 and copy it to task name. Other arches will need to initialize task names in the init structure to an empty string.  
3983 5652 d 18 h svoboda /trunk/ task_set_name() syscall so that we can have names (for userspace-loaded) tasks again.  
3908 5665 d 14 h decky /trunk/ overhaul pareas: use one single physical area for the physical address space not belonging to physical memory  
3896 5667 d 9 h svoboda /trunk/ More elegant way of invoking the loader - as a 'cloneable' service. Task names functionality lost for the time being.  
3875 5669 d 13 h decky /trunk/kernel/generic/ remove platform dependent constructs from generic code  
3790 5704 d 20 h svoboda /trunk/kernel/ Make newlines in panic messages consistent. Add periods at end of messages so that it is obvious whether they are printed entirely.  
3734 5719 d 19 h decky /trunk/kernel/generic/src/proc/ coding style  
3620 5750 d 22 h svoboda /trunk/kernel/generic/ Move stuff related to kbox to a separate struct.  
3617 5751 d 15 h svoboda /trunk/kernel/generic/ Fix race that allowed Udebug to report THREAD_B events for threads already reported with THREAD_READ.  
3581 5762 d 10 h jermar /trunk/kernel/ Some cstyle.  
3578 5763 d 1 h vana /trunk/ Alfa of SMP support on IA64  
3566 5765 d 23 h svoboda /trunk/ Set meaningful names for loaded programs. Now 'tasks' kconsole command is much less obscure.  
3565 5766 d 9 h svoboda /trunk/ Fix sys_thread_create(): could fail when passed name was at end of mapping, could crash if provided name was not null-terminated.  
3438 5817 d 20 h svoboda /trunk/ Merge syscall tracer (trace) and relevant part of udebug interface from tracing to trunk.  
3359 5841 d 22 h jermar /trunk/kernel/generic/src/proc/ Improve comments in task.c  
3222 5888 d 16 h svoboda /trunk/ Merge program-loader related stuff from dynload branch to trunk. (huge)  
3186 5903 d 14 h jermar /trunk/kernel/ Support for active mutexes. Active mutexes implement busy waiting, pretty much
in the same way as spinlocks, but can be passed to condition variables, which is
the motivation for this enhancement.
 
3181 5905 d 22 h jermar /trunk/kernel/generic/src/ cstyle for kinit.c and scheduler.c  
3137 5912 d 21 h jermar /trunk/kernel/generic/src/proc/ Maintain cache coherence after sys_task_spawn() copies ELF image from user space.  
3104 5921 d 1 h svoboda /trunk/kernel/ Declare arguments for memstr.h operations as pointers instead of uintptr_t.  
3063 5923 d 18 h decky /trunk/kernel/generic/src/proc/ support for SYS_SPAWN syscall
proper printf formatting
change the way init tasks are created
 
3062 5923 d 18 h decky /trunk/kernel/generic/src/proc/ proper printf formatting  
2907 5945 d 17 h jermar /trunk/kernel/generic/src/proc/ Improve comment for thread_create().  
2802 5982 d 21 h jermar /trunk/kernel/generic/ Fix initialization of answerbox->task in ipc_answerbox_init.
Contributed by Jiri Svoboda.
 
2790 5988 d 22 h jermar /trunk/kernel/generic/src/proc/ Fix typo ALV tree vs. AVL tree.  
2765 6009 d 13 h jermar /trunk/kernel/generic/src/proc/ tasklet.c needs to include config.h  
2746 6020 d 16 h decky /trunk/kernel/ start merging tasklets (more or less a rewrite)  
2745 6020 d 21 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2712 6046 d 18 h decky /trunk/kernel/ prettyprint output  
2632 6108 d 8 h decky /trunk/kernel/generic/src/proc/ try to kill the tasks fewer times by introducing a delay in iterations  
2504 6233 d 13 h jermar /trunk/kernel/generic/ Give the AVL tree walkers the possibility to take an argument.
Each walker is now supposed to return a bool value to support walk termination.

Switch over from the tasks_btree B+tree to tasks_tree AVL tree.
This makes the fix for ticket #48 complete.
 
2502 6233 d 19 h jermar /trunk/kernel/generic/ Replace the threads_btree B+tree with an AVL tree. The new variable is called
threads_tree. For printing list of threads, use the new AVL tree walker
mechanism.

This solves half of ticket #48.
 
2487 6260 d 14 h jermar /trunk/kernel/generic/src/proc/ Kernel stack address was printed twice.  
2470 6279 d 11 h jermar /trunk/ Fix a double-free recently introduced in revision r2436.
Add a comment clarifying the life-cycle of the kernel_uarg structure.

Comment out the freeing of userspace thread stack while still running on it.
This should be fixed by implementing userspace version of thread_join().
 
2451 6288 d 13 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2446 6291 d 17 h jermar /trunk/kernel/generic/ More efficient and simpler task termination.

Based on the assumption, that after its creation, only the task itself can create more threads for itself,
the last thread with userspace context to execute thread_exit() will perform futex and IPC cleanup. When
the task has no threads, it is destroyed. Both the cleanup and destruction is controlled by reference
counting.

As for userspace threads, even though there could be a global garbage collector for joining threads, it is
much simpler if the uinit thread detaches itself before switching to userspace.

task_kill() is now an idempotent operation. It just instructs the threads within a task to exit.

Change in the name of a thread state: Undead -> JoinMe.
 
2440 6292 d 11 h jermar /trunk/kernel/generic/ Fix the problem with sys_thread_create() by splitting the create and attach functionality of
thread_create(). Now it is possible to specify a flag that will cause thread_create() to only allocate and
initialize the thread structure. A call to thread_attach() will make the thread visible to the system.
This arrangement makes it easier to undo creation of a thread in case of a failure in sys_thread_create().
 
2436 6293 d 13 h jermar /trunk/ Fix two memory leaks.

In kernel, kernel_uarg structure needs to be deallocated when a thread
with userspace context is destroyed.

In userspace, the return value of the SYS_THREAD_CREATE must be checked
for error conditions and in case of error, uarg and stack must be freed
up.
 
2310 6316 d 14 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.