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Merge pull request #11999 from milescoviello/docs/userservice-initialize-priorities

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docs(libSceUserService): note the priorities ten titles pass to sceUserServiceInitialize
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Dean authored and GitHub committed 2026-10-30 02:32:40 +13:00
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docs/dev/debt/libSceUserService.md
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### Unknown function info
- [sceUserServiceGetNpAccountId](../../../core/libs/prx/libSceUserService/Export.cpp) (libSceUserService) - the account id for a user with no linked PSN account is assumed to be 0 with success; libSceNpManager's `sceNpGetAccountIdA` answers the same question with `SCE_NP_ERROR_SIGNED_OUT`
- [sceUserServiceInitialize and sceUserServiceInitialize2](../../../core/libs/prx/libSceUserService/Export.cpp) (libSceUserService) - event delivery has no background service thread, so the confirmed priority and Initialize2 CPU affinity mask do not affect host scheduling.
- [sceUserServiceInitialize and sceUserServiceInitialize2](../../../core/libs/prx/libSceUserService/Export.cpp) (libSceUserService) - event delivery has no background service thread, so the confirmed priority and Initialize2 CPU affinity mask do not affect host scheduling. Of 23 `sceUserServiceInitialize` calls in ten titles checked, 17 pass no param, four pass priority 700 (Borderlands 4 PPSA01494, Crimson Desert PPSA25286, MXGP 26 PPSA30839, Super Meat Boy 3D PPSA31162), one passes 767 (Ghost of Tsushima PPSA02225) and one in Metal Gear Solid 4's `mgs4.elf` passes a param from a register. None calls `sceUserServiceInitialize2`.
- [sceUserServiceGetUserColor](../../../core/libs/prx/libSceUserService/Export.cpp) (libSceUserService) - the profile colour corresponds to user index (0: blue, 1: red, 2: green, 3: pink); colours 1, 2 and 3 are assumed, not measured
- [sceUserServiceGetUserName](../../../core/libs/prx/libSceUserService/Export.cpp) (libSceUserService) - `0x80960105`, which a PS5 (firmware 13.60) returns for a user id it does not know, has no known name; it is `USER_SERVICE_ERROR_UNKNOWN_USER` here. On the console a registered user who is not logged in still gets their name; here up to 4 users ("Player", "Player2", "Player3", "Player4") are supported; user names "Player2", "Player3" and "Player4" are assumed, not measured
- [sceUserServiceGetEvent](../../../core/libs/prx/libSceUserService/Export.cpp) (libSceUserService) - login and logout events queued dynamically on controller hotplug have no source and are assumed, not measured. Six titles disassembled for this entry drain the queue until the call returns nonzero. PPSA01494 01.100.002 (at 0x374C0C6), PPSA30839 01.003.000 (0x4DF3F0), PPSA31162 02.000.001 (0x550ED0) and PPSA34502 01.010.000 (0x30035C, 0x300433) act only on `event_type` 0 and 1, reading `user_id` at offset 4 for both, and skip other types. PPSA18194 01.004.003 (0x16D44A3) tells `NOT_INITIALIZED` (0x80960002) and `NO_EVENT` (0x80960007) apart and logs any other error. PPSA21564 01.007.000 copies each 8-byte event into a list at one site (0x2AFCA8) and discards them at the other (0x2B6CF3)