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Rev Age Author Path Log message Diff
4692 5483 d 1 h svoboda /branches/tracing/ Merge trunk changes up to r4686.  
4377 5583 d 1 h svoboda /branches/tracing/ Merge latest trunk changes to tracing. (i.e. revs 3684:4374, huge). This time hopefully the real thing.  
3623 5752 d 10 h svoboda /branches/tracing/ Merge latest trunk changes into tracing.  
3597 5754 d 23 h svoboda /branches/tracing/ Merge latest trunk changes into tracing.  
3431 5820 d 0 h svoboda /branches/tracing/kernel/ Add configuration option CONFIG_UDEBUG to compile udebug in the kernel or not.  
3425 5820 d 11 h svoboda /branches/tracing/ Merge latest trunk changes into tracing (broken)  
3424 5820 d 23 h svoboda /branches/tracing/ Merge trunk changes up to r3180 into tracing  
3035 5928 d 9 h svoboda /branches/tracing/kernel/generic/ Use thread_join() to wait for kbox thread termination, instead of specific wait queue.  
3034 5928 d 11 h svoboda /branches/tracing/kernel/generic/ Convert kb_cleanup_lock to a mutex  
3018 5931 d 4 h svoboda /branches/tracing/ Isolate udebug-related thread_t fields into udebug_thread_t  
3015 5931 d 10 h svoboda /branches/tracing/kernel/generic/ Call udebug_stoppable_begin() after scheduling, rather than before - avoid restricted contex.  
3014 5931 d 12 h svoboda /branches/tracing/kernel/generic/ Isolate udebug-related task_t fields into udebug_task_t.  
2902 5947 d 11 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  
2899 5948 d 0 h svoboda /branches/tracing/ Add support for SET_EVMASK debug operation  
2898 5948 d 2 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()  
2870 5956 d 23 h svoboda /branches/tracing/kernel/generic/ Terminate debugging session on debugger disconnect  
2866 5957 d 10 h svoboda /branches/tracing/kernel/generic/ Verify that thread is waiting in syscall event when reading syscall args  
2848 5976 d 9 h svoboda /branches/tracing/kernel/generic/ Use debug_lock in thread struct for finer locking, to avoid problems with waitq_wakeup  
2839 5977 d 3 h svoboda /branches/tracing/kernel/generic/ Add thread_attach_by_id() and use it to do ipc_connect_kbox() with proper locking  
2827 5981 d 9 h svoboda /branches/tracing/kernel/generic/ Verify that a thread/task is in appropriate state when handling debug calls  
2826 5981 d 11 h svoboda /branches/tracing/kernel/generic/ Move debug_go_call from task struct to thread struct  
2825 5981 d 11 h svoboda /branches/tracing/kernel/generic/ Introduce task debug-states (udebug_task_state_t)  
2817 5982 d 2 h svoboda /branches/tracing/kernel/generic/ Add REGS_READ and REGS_WRITE debug methods to access userspace register state (no effect yet)  
2808 5983 d 1 h svoboda /branches/tracing/ add kernel answerbox+thread to mediate access to task's memory  
2805 5984 d 5 h svoboda /branches/tracing/ add ipc call to retrieve syscall arguments  
2804 5984 d 7 h svoboda /branches/tracing/kernel/generic/ allow for attaching to tasks with sleeping threads  
2801 5984 d 11 h svoboda /branches/tracing/ [tracing] initial debug interface support  
2799 5984 d 12 h svoboda /branches/tracing/ Revert all changes in tracing branch (sync to r2785 of trunk)  
2787 5993 d 4 h decky /branches/tracing/ add dynamic linking, debugging and tracing branch  
2746 6022 d 4 h decky /trunk/kernel/ start merging tasklets (more or less a rewrite)  
2504 6235 d 2 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 6235 d 7 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.
 
2451 6290 d 1 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2446 6293 d 5 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 6293 d 23 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().
 
2268 6337 d 2 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2227 6346 d 15 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6348 d 1 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2187 6349 d 8 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  
2109 6410 d 9 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.