Function SysKernelObjectWait

Kernel/src/arch/x86_64/syscalls.cpp:2570–2594

//////////////////////// \brief SysKernelObjectWait (objects, count) Wait on one KernelObject \param objects (handle_t*) Pointer to array of handles to wait on \param count (size_t) Amount of objects to wait on \return negative error code on failure ////////////////////////

/// \return negative error code on failure
/////////////////////////////
long SysKernelObjectWait(regs64_t* r){
	process_t* currentProcess = Scheduler::GetCurrentProcess();
	unsigned count = SC_ARG1(r);

	if(!Memory::CheckUsermodePointer(SC_ARG0(r), count * sizeof(handle_id_t), currentProcess->addressSpace)){
		return -EFAULT;
	}

	Handle* handles[count];

	KernelObjectWatcher watcher;
	for(unsigned i = 0; i < count; i++){
		if(Scheduler::FindHandle(currentProcess, reinterpret_cast<handle_id_t*>(SC_ARG0(r))[i], &handles[i])){
			IF_DEBUG(debugLevelSyscalls >= DebugLevelNormal, {
				Log::Warning("SysKernelObjectWait: Invalid handle ID %d", SC_ARG0(r));
			});
			return -EINVAL;
		}

		watcher.WatchObject(handles[i]->ko, 0);
	}
	watcher.Wait();

	return 0;
}


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