mirror of
https://github.com/RPCSX/rpcsx.git
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575a245f8d
Replaces `std::shared_pointer` with `stx::atomic_ptr` and `stx::shared_ptr`. Notes to programmers: * This pr kills the use of `dynamic_cast`, `std::dynamic_pointer_cast` and `std::weak_ptr` on IDM objects, possible replacement is to save the object ID on the base object, then use idm::check/get_unlocked to the destination type via the saved ID which may be null. Null pointer check is how you can tell type mismatch (as dynamic cast) or object destruction (as weak_ptr locking). * Double-inheritance on IDM objects should be used with care, `stx::shared_ptr` does not support constant-evaluated pointer offsetting to parent/child type. * `idm::check/get_unlocked` can now be used anywhere. Misc fixes: * Fixes some segfaults with RPCN with interaction with IDM. * Fix deadlocks in access violation handler due locking recursion. * Fixes race condition in process exit-spawn on memory containers read. * Fix bug that theoretically can prevent RPCS3 from booting - fix `id_manager::typeinfo` comparison to compare members instead of `memcmp` which can fail spuriously on padding bytes. * Ensure all IDM inherited types of base, either has `id_base` or `id_type` defined locally, this allows to make getters such as `idm::get_unlocked<lv2_socket, lv2_socket_raw>()` which were broken before. (requires save-states invalidation) * Removes broken operator[] overload of `stx::shared_ptr` and `stx::single_ptr` for non-array types.
62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
#pragma once
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#include "sys_sync.h"
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#include "Emu/Memory/vm_ptr.h"
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struct sys_rwlock_attribute_t
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{
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be_t<u32> protocol;
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be_t<u32> pshared;
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be_t<u64> ipc_key;
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be_t<s32> flags;
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be_t<u32> pad;
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union
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{
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nse_t<u64, 1> name_u64;
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char name[sizeof(u64)];
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};
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};
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struct lv2_rwlock final : lv2_obj
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{
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static const u32 id_base = 0x88000000;
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const lv2_protocol protocol;
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const u64 key;
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const u64 name;
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shared_mutex mutex;
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atomic_t<s64> owner{0};
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ppu_thread* rq{};
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ppu_thread* wq{};
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lv2_rwlock(u32 protocol, u64 key, u64 name) noexcept
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: protocol{static_cast<u8>(protocol)}
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, key(key)
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, name(name)
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{
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}
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lv2_rwlock(utils::serial& ar);
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static std::function<void(void*)> load(utils::serial& ar);
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void save(utils::serial& ar);
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};
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// Aux
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class ppu_thread;
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// Syscalls
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error_code sys_rwlock_create(ppu_thread& ppu, vm::ptr<u32> rw_lock_id, vm::ptr<sys_rwlock_attribute_t> attr);
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error_code sys_rwlock_destroy(ppu_thread& ppu, u32 rw_lock_id);
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error_code sys_rwlock_rlock(ppu_thread& ppu, u32 rw_lock_id, u64 timeout);
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error_code sys_rwlock_tryrlock(ppu_thread& ppu, u32 rw_lock_id);
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error_code sys_rwlock_runlock(ppu_thread& ppu, u32 rw_lock_id);
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error_code sys_rwlock_wlock(ppu_thread& ppu, u32 rw_lock_id, u64 timeout);
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error_code sys_rwlock_trywlock(ppu_thread& ppu, u32 rw_lock_id);
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error_code sys_rwlock_wunlock(ppu_thread& ppu, u32 rw_lock_id);
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constexpr auto _sys_rwlock_trywlock = sys_rwlock_trywlock;
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