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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.
60 lines
1.3 KiB
C++
60 lines
1.3 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_semaphore_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_sema final : lv2_obj
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{
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static const u32 id_base = 0x96000000;
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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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const s32 max;
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shared_mutex mutex;
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atomic_t<s32> val;
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ppu_thread* sq{};
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lv2_sema(u32 protocol, u64 key, u64 name, s32 max, s32 value) 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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, max(max)
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, val(value)
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{
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}
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lv2_sema(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_semaphore_create(ppu_thread& ppu, vm::ptr<u32> sem_id, vm::ptr<sys_semaphore_attribute_t> attr, s32 initial_val, s32 max_val);
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error_code sys_semaphore_destroy(ppu_thread& ppu, u32 sem_id);
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error_code sys_semaphore_wait(ppu_thread& ppu, u32 sem_id, u64 timeout);
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error_code sys_semaphore_trywait(ppu_thread& ppu, u32 sem_id);
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error_code sys_semaphore_post(ppu_thread& ppu, u32 sem_id, s32 count);
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error_code sys_semaphore_get_value(ppu_thread& ppu, u32 sem_id, vm::ptr<s32> count);
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