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Rev Age Author Path Log message Diff
2494 6159 d 2 h jermar /trunk/kernel/generic/ Implement a new mechanism for copying data between two address spaces based on
IPC. New system method IPC_M_DATA_SEND is introduced. The implementation is
generic and does not make use of any possible architecture optimizations such as
direct copy from one address space to another.
 
2493 6159 d 6 h jermar /trunk/kernel/generic/include/ipc/ Collapse IPC method numbers.  
2476 6180 d 2 h jermar /trunk/ Cleanup.  
2471 6183 d 3 h jermar /trunk/ Greatly improve comments in the IPC layer.
Now I think I finally start to understand our IPC internals :-)
 
2465 6192 d 8 h jermar /trunk/ Merge arm32 into trunk.  
2462 6194 d 3 h jermar /trunk/kernel/ Replace gcc-specific __FUNCTION__ with C99 __func__.
suncc's xregs=no%float can be used only on sparc64.
 
2451 6196 d 3 h jermar /trunk/kernel/generic/ JoinMe -> Lingering  
2446 6199 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.
 
2445 6199 d 9 h decky /trunk/ initial merge of branches/fs
(not finished, huge cleanup is needed)
 
2444 6199 d 23 h jermar /trunk/kernel/ First fixes for suncc support.
It is going to be a long way...
 
2441 6200 d 1 h decky /trunk/kernel/ fix ICC compilation  
2440 6200 d 2 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().
 
2310 6224 d 4 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.
 
2275 6241 d 4 h decky /trunk/kernel/generic/ add fancy uptime kconsole command  
2268 6243 d 4 h jermar /trunk/kernel/generic/ Document and assert proper usage of THREAD_FLAG_WIRED.
Original patch by Jan Hudecek.
 
2227 6252 d 17 h decky /trunk/kernel/ start shutdown infrastructure  
2218 6253 d 23 h decky /trunk/kernel/ support the possibility to send EOI or Interrupt Acknowledgement
prior to processing the interrupt
(this is essential on some architectures to prevent preemption deadlock)
 
2216 6254 d 3 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2208 6254 d 5 h decky /trunk/kernel/generic/ use spinlock only on console output, not other print functions
cleanup
 
2187 6255 d 10 h decky /trunk/kernel/generic/ add syscall for getting current thread ID  

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