/i0jbqkfcma==/ Dissolve/70/gravity/center ">Point is complete.5. Change the generated code. Join the implementation.First we double-click the interface, will enter a Myfirstdll.idl file, which has the following code:Interface ifirst:iunknown{[] HRESULT Add ([in] long A, [in] long B, [Out,retval] long* Ret);}; [UUID (f7dafd6a-c1db-46af-9cf9-62ec0d7d589f), version (1.0),]library myfirstdlllib{importlib ("Stdole2.tlb
possible. COM is the basis of a number of Microsoft technologies and frameworks, including OLE, OLE Automation, ActiveX, COM +, DCOM, Windows shell, DirectX, and Windows Runtime. For details, refer to component object model.Add COM interface to service
For details about how to create an ATL-based Windows Service, refer to "go to the Windows Service series" to create a Windows service.
Next, add a COM interface to the service.
First, add an ATL simple object to the project, as shown below:
Se
Simple objects, and then click Add. Enter the abbreviation for the class (assumed to be mycomserver), and then the other items take the default values. Click Finish to add the class.
Add a new method to the interface you created for you. Go to Class View, right-click the Imycomserver interface, and choose Add | Add method ". Name the method (assumed to be Mycomservermethod), and then click Finish.
Now, we're going to implement this method in the class. Select MyCOMServer.cpp and view the sour
=3; safearray* parray=safearraycreate (vt_i4,2,bound); long demen[2]; for (long I=0;imethod Six: Use Safearraycreateex to create a one-dimensional array containing the structureThe passing of a UDT using SAFEARRAY (custom structure) is a common technique, and the MSDN documentation is well-documented, and one thing to note is that the custom structure requires its own GUID, which must be defined in the IDL file. You must also use the IRecordInfo interface, which is passed in and out with th
Address: http://blog.csdn.net/ariesjzj/article/details/8745035
Memory virtualization is an important part of Virtual Machine implementation. In virtual machines, the virtual guest OS and Host OS use the same physical memory, but they cannot affect each other. Specifically, if the operating system runs on a bare metal (rather than a virtual machine), MMU automatically performs virtual address (VA) when accessing the memory as long as the operating system provides a page table) convert to physica
analysis, the software code logic is for the hardware service, just in order to give full play to the hardware functions, so learning Linux memory management mechanism, first of all to learn the processor under the framework of the MMU working principle, so that we understand the logic of the page table mechanism is very helpful. (as a low-level software engineer, nothing to turn over datasheet very useful ah, more from the hardware thinking to consider the problem)MMU is the hardware logic ins
segment, stack segment package together, By finding the location of the different LDT in the GDT and then changing the LDTR, you can switch between different processes.
3. Segment Register (Segment register)
CS (cose segment), SS, DS (data segment), ES, FS, GS, the purpose of using segment register is to avoid memory access every time the process accesses the address
The physical address is the address of the actual physical memory, and the logical address is the address used by the program i
to the processor.
Processing the missing pages requires the hardware and operating system cores to work together:
The first step to the third step is the same as above
Fourth step: The valid bit in Pte is zero, so the MMU triggers an exception. Passes control of a fault handler in the CPU to the operating system kernel.
Fifth step: The page fault handler determines the sacrifice page in the physical memory, and if it has been modified, swap it out to disk.
The MMU Memory Management Unit is responsible for converting the virtual memory address to the physical memory address.
Later, when studying the page table, we can see that when a process requests access to its memory, it is the responsibility of the operating system to map the virtual address provided by the process to the physical address where that memory is stored. the page table is where the operating system stores its Mappings of virtual addresses to physical addresses. in this case,
, the logic of software code is for the hardware services, just to give full play to the functions of the hardware, so learning the memory management mechanism of Linux, the first thing to learn under the processor architecture of the MMU working principle, so that we understand the logic of the page table mechanism is helpful. (as the low-level software engineer, nothing to turn over datasheet very useful ah, more from the hardware thinking to consider the problem)The MMU is the hardware logic
From: http://www.kernelchina.org /? Q = node/273
In the mips architecture, a maximum of four co-processors are supported ). Cp0 must be implemented in the architecture. It controls the CPU. MMU, exception handling, multiplication and division, and other functions depend on the cp0 of the coprocessor. It is one of the essence of MIPS and opens the door to the MIPs privileged level mode.Cp0 of MIPS contains 32 registers. For more information about them, refer to the official MIPS documents mips32
check, TLB and Cache UsageI. MMU address conversion:1. First clear why MMU Na is used? MMU is a memory management unit. To put it bluntly, it is like tableware in the canteen. It is not enough for all students to eat together, however, the canteen does not want to invest any more in purchasing new tableware (the reason is obvious: on the one hand, the cost is required, and on the other hand, it occupies the place. This is like adding memory). Is ther
register, and the memory is no longer accessed for the page table while the process is running. The advantage of this is that it is simple and does not require access to memory during the mapping process, and the disadvantage is that it is expensive when the page table is large. The idea of the second approach is that the entire page table is in memory, and the hardware required is simply a register that points to the start of the page table. The advantage of this is that the context switch
and 64-bit versions to adapt to operating systems of different architectures. Figure 1 shows the overall structure of NrsMiner.
Figure 1 Overall structure of NrsMiner
In NrsMiner, the master control module exists as a service to start other modules. The update module downloads the update package NrsDataCache from the control end. tlb and updates other modules. The attack module is responsible for attacking other computers in the intranet and other
with _ TLB, which contains isample
= Interface (iunknown) interface definition. As mentioned above, all com interfaces are inherited from iunknown.
In this unit, we can also see the definitions of the three types of IDS (CLSID required for Type Library ID, IID, and COM Registration): libid_pcom, iid_isample, and class_sample. The key is
At this time, the interface itself only defines code without any implementation code. Where is the interface creati
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