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Rev Age Author Path Log message Diff
4377 5523 d 11 h svoboda /branches/tracing/ Merge latest trunk changes to tracing. (i.e. revs 3684:4374, huge). This time hopefully the real thing.  
3623 5692 d 20 h svoboda /branches/tracing/ Merge latest trunk changes into tracing.  
3597 5695 d 9 h svoboda /branches/tracing/ Merge latest trunk changes into tracing.  
3431 5760 d 10 h svoboda /branches/tracing/kernel/ Add configuration option CONFIG_UDEBUG to compile udebug in the kernel or not.  
3426 5760 d 21 h svoboda /branches/tracing/kernel/generic/src/ Fix compile errors.  
3425 5760 d 21 h svoboda /branches/tracing/ Merge latest trunk changes into tracing (broken)  
3424 5761 d 9 h svoboda /branches/tracing/ Merge trunk changes up to r3180 into tracing  
3034 5868 d 21 h svoboda /branches/tracing/kernel/generic/ Convert kb_cleanup_lock to a mutex  
3026 5869 d 17 h svoboda /branches/tracing/kernel/generic/ Convert THREAD->udebug.lock to mutex. Protect against udebug_before_thread_runs() called from interrupt handler. Pending locking scheme change (multithreaded tasks may hang)  
3018 5871 d 14 h svoboda /branches/tracing/ Isolate udebug-related thread_t fields into udebug_thread_t  
2925 5884 d 22 h svoboda /branches/tracing/ Merged latest trunk changes to tracing branch  
2903 5887 d 20 h svoboda /branches/tracing/ Rename event NEW_THREAD to THREAD_B. Add THREAD_E event - thread exit  
2902 5887 d 21 h svoboda /branches/tracing/kernel/generic/ Implement proper kbox thread shutdown, with all bells and whistles. Use THREAD->debug_active in udebug_stoppable_xx() and friends  
2898 5888 d 12 h svoboda /branches/tracing/ Implement operation UDEBUG_M_STOP that stops a thread. Can be used for stopping program by hitting a key in debugger. Somewhat jittery demo in sctrace. Fix missing lock of THREAD->debug_lock in udebug_stoppable_end()  
2867 5897 d 15 h svoboda /branches/tracing/ Signal hash of new thread with a UDEBUG_EVENT_NEW_THREAD message  
2866 5897 d 20 h svoboda /branches/tracing/kernel/generic/ Verify that thread is waiting in syscall event when reading syscall args  
2865 5897 d 20 h svoboda /branches/tracing/kernel/generic/src/ Put proper udebug_stoppable_end() in uinit  
2854 5915 d 22 h svoboda /branches/tracing/ Fix condition for generating debug events. Properly initialize threads created during debugging session  
2848 5916 d 19 h svoboda /branches/tracing/kernel/generic/ Use debug_lock in thread struct for finer locking, to avoid problems with waitq_wakeup  
2839 5917 d 13 h svoboda /branches/tracing/kernel/generic/ Add thread_attach_by_id() and use it to do ipc_connect_kbox() with proper locking  
2827 5921 d 19 h svoboda /branches/tracing/kernel/generic/ Verify that a thread/task is in appropriate state when handling debug calls  
2826 5921 d 21 h svoboda /branches/tracing/kernel/generic/ Move debug_go_call from task struct to thread struct  
2825 5921 d 21 h svoboda /branches/tracing/kernel/generic/ Introduce task debug-states (udebug_task_state_t)  
2817 5922 d 12 h svoboda /branches/tracing/kernel/generic/ Add REGS_READ and REGS_WRITE debug methods to access userspace register state (no effect yet)  
2808 5923 d 11 h svoboda /branches/tracing/ add kernel answerbox+thread to mediate access to task's memory  
2804 5924 d 17 h svoboda /branches/tracing/kernel/generic/ allow for attaching to tasks with sleeping threads  
2801 5924 d 21 h svoboda /branches/tracing/ [tracing] initial debug interface support  
2799 5924 d 22 h svoboda /branches/tracing/ Revert all changes in tracing branch (sync to r2785 of trunk)  
2787 5933 d 14 h decky /branches/tracing/ add dynamic linking, debugging and tracing branch  
2712 5988 d 17 h decky /trunk/kernel/ prettyprint output  
2504 6175 d 12 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 6175 d 17 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 6202 d 12 h jermar /trunk/kernel/generic/src/proc/ Kernel stack address was printed twice.  
2470 6221 d 9 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 6230 d 11 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2446 6233 d 15 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 6234 d 9 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 6235 d 11 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.
 
2268 6277 d 12 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2229 6286 d 17 h jermar /trunk/ Revert some of the changes introduced in revision 2209.
I think it is not correct to remove serialization of pseudo threads in printf_core.c.
With thread-level futex serialization, several pseudo threads running in one thread could easily deadlock
the task.

Add a dedicated futex serialization to thread1.c test only.