rpcsx/rpcs3/Emu/SysCalls/lv2/sys_cond.h

#pragma once

struct mutex_t;

struct sys_cond_attribute_t
{
	be_t<u32> pshared;
	be_t<s32> flags;
	be_t<u64> ipc_key;

	union
	{
		char name[8];
		u64 name_u64;
	};
};

struct cond_t
{
	const u64 name;
	const std::shared_ptr<mutex_t> mutex; // associated mutex

	// TODO: use sleep queue, possibly remove condition variable
	std::condition_variable cv;
	std::atomic<s32> waiters;
	std::atomic<s32> signaled;

	cond_t(std::shared_ptr<mutex_t>& mutex, u64 name)
		: mutex(mutex)
		, name(name)
		, waiters(0)
		, signaled(0)
	{
	}
};

class PPUThread;

// SysCalls
s32 sys_cond_create(vm::ptr<u32> cond_id, u32 mutex_id, vm::ptr<sys_cond_attribute_t> attr);
s32 sys_cond_destroy(u32 cond_id);
s32 sys_cond_wait(PPUThread& CPU, u32 cond_id, u64 timeout);
s32 sys_cond_signal(u32 cond_id);
s32 sys_cond_signal_all(u32 cond_id);
s32 sys_cond_signal_to(u32 cond_id, u32 thread_id);