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Rev Age Author Path Log message Diff
4337 5482 d 3 h svoboda /branches/dynload/ Merge changes in trunk up to r3741 to dynload.  
3674 5627 d 1 h svoboda /branches/dynload/ Merge latest trunk changes to dynload.  
3569 5654 d 12 h svoboda /branches/dynload/ Merge latest trunk changes into dynload.  
3448 5705 d 13 h svoboda /branches/dynload/ Merge latest trunk changes into dynload  
3190 5785 d 10 h svoboda /branches/dynload/ Remove vestiges of loading code coming from trunk  
3153 5799 d 9 h svoboda /branches/dynload/ Merge latest trunk changes into dynload  
3150 5799 d 10 h svoboda /branches/dynload/ Merge trunk changes up to r3090 into dynload (still broken)  
3149 5799 d 10 h svoboda /branches/dynload/ Merge trunk changes up to r3071 into dynload (broken)  
2927 5831 d 13 h decky /branches/dynload/ added dynload branch  
2907 5834 d 7 h jermar /trunk/kernel/generic/src/proc/ Improve comment for thread_create().  
2790 5877 d 13 h jermar /trunk/kernel/generic/src/proc/ Fix typo ALV tree vs. AVL tree.  
2712 5935 d 9 h decky /trunk/kernel/ prettyprint output  
2504 6122 d 4 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 6122 d 9 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 6149 d 4 h jermar /trunk/kernel/generic/src/proc/ Kernel stack address was printed twice.  
2470 6168 d 1 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 6177 d 3 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2446 6180 d 7 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 6181 d 1 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 6182 d 3 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.
 

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