Process Manager services
- 1 Process Tracker thread
- 2 pm:bm
- 3 pm:dmnt
- 4 pm:info
- 5 pm:shell
Process Tracker thread
PM has a separate thread that is waiting for synchronization on process handles.
When the kernel signals a process handle, it uses svcResetSignal on the process handle and then it uses svcGetProcessInfo to read out the ProcessState.
If the process moved state non-3 -> 3 it clears 4 in process flags.
If process flags has mask 8 set:
- If new state is 2, it clears 0x20 and sets 0x10 in process flags, and signals the ProcessEventWaiter handle.
- If new state is 4, it clears 0x20 and sets 0x10 in process flags, and signals the ProcessEventWaiter handle.
- If new state is 7, it sets 0x30 in process flags, and signals the ProcessEventWaiter handle.
If process flags has mask 1 set:
- If new state is 6, it signals the ProcessEventWaiter handle.
If mask 1 is not set, it immediately does what is otherwise done by the #FinalizeDeadProcess command.
This thread can also be triggered by the pm:shell #LaunchProcess cmd.
It uses ldr:pm GetProgramInfo with the supplied title-id.
If ((*(u8*) (info_output+2)) & 3) is == 1, it goes through the process list and errors if any has bit 0x40 set. Thus only one process can have bit 0x40 set at a time.
The second input argument for ldr:pm CreateProcess is (launch_flags >> 2) & 3.
If launch_flags has mask 1 set, it sets mask 1 in process flags.
If launch_flags flags has mask 0x10 set, it sets mask 8 in process flags.
If ((*(u8*) (info_output+2)) & 3) is == 1, it sets 0x40 in the process flags, and signals the event returned by #EnableDebug. svcStartProcess is not called in this case, it has to be done manually by the #StartProcess command.
Finally it does svcStartProcess on the process handle that was returned by ldr:pm CreateProcess, and sets process state to 2.
If the title-id matches the title-id given in #EnableDebugForTitleId, then svcStartProcess is not called. Instead process remains in suspended state, and has to be done manually by the #StartProcess command.
Thus at the point of launch, the pid is already registered in ldr, fs, sm, and pm.
Always returns u32 0.
Returns an array of pids of all processes that have mask 4 set in process flags.
Takes a pid. Process state must be 0 or 1. Then it uses svcStartProcess(process_handle, u8, u8, u32) with args coming from ldr:pm GetProgramInfo.
After that, it sets process state to 2.
Takes a title-id of the program to debug. Sets this to a global field. Next time it gets launched it will be handled differently.
Returns an event handle that is signaled when the requested title is launched.
Does *not* take a specific title-id as input.
Returns an event handle that is triggered for debug titles.
|4||GetProcessEventType (0=CONTINUE, 1=CRASHING, 2,3,5)|
Takes a title-id and launch_flags. See #Process launch.
Takes a pid as input. If the process with pid has the state "dead", it unregisters the pid in fsp:pr, sm:m, and ldr:pm.
Then it removes the process from PMs internal linked-list of active processes.
Takes a pid as input. Clears 0x10 from process flags.
Launches a process with hardcoded boot2 title-id.
Loops through the internal linked-list of processes, looks for mask 0x40 set in process flags. Returns pid of first such entry.