blocks|key|4223175|text|系统调用只是调用操作系统提供的函数；它可能会中断系统进程，但对用户是不可见的。从您的程序的角度来看，它与调用任何其他函数没有什么不同。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4223176|中断是中断程序中正常程序流的事件；它们通常是由操作系统生成的。中断可以由您的程序捕获，或者，如果您没有编写处理程序来捕获中断，它可能会落入父进程提供的处理程序。|4223177|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

A system call is just calling a function provided by the operating system; it might interrupt a system process, but that would not be visible to the user. From your program's perspective, its no different from calling any other function. 

An interrupt is an event that interrupts normal program flow in your program; often they are generated by the OS. An interrupt can be caught by your program, or, if you don't program a handler to catch it, it can fall through to a handler provided by a parent process.

blocks|key|4223247|text|“中断”是其中一个严重超载的词，而且还在变得更糟。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4223248|通常在当前机器指令执行结束时，中断被用来表示来自某些外围设备的“真正的”硬件中断--向下拖动CPU封装上的中断请求引脚，导致硬件跳转到处理中断时的预编程位置。|4223249|其他语言也将'interrupt‘用于其他目的，例如。Java：“中断是对线程的指示，它应该停止正在做的事情，并做其他事情。”相关，但不是相同的。|4223250|在OS类中，“中断”是更改保护级别的OS条目，例如：进入内核状态。这可能发生在用户syscall或从硬件中断输入的驱动程序中，这两种操作都称为“中断”。用户级系统调用可以使用，也可以不使用模仿硬件中断的“软件中断”机制。|4223251|无论如何，现在等待下一个重载造成更多的混乱。|4223252|我听说'static‘现在在C%2B%2B中又有了另一个含义:((|4223253|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

'Interrupt' is one of those words that is grossly overloaded, and it's getting worse.

An interrupt used to mean a 'real' hardware interrupt from some peripheral - dragging down an interrupt-request pin on the CPU package caused the hardare to jump to a pre-programmed location whn the interrupt got handled, usually at the end of execution of the current machine instruction.

Other languages have used 'interrupt' for other purposes, eg. Java: 'An interrupt is an indication to a thread that it should stop what it is doing and do something else.' Related, but not the same.

In OS class, an 'interrupt' is an entry to the OS that changes protection level, eg. enters kernel state. This can happen from a user syscall or from a driver entered from a hardware interrupt and both of these actions are known as 'interrupts'. The user-level syscall may, or may not, use a 'software interrupt' mechanism that mimics a hardware interrupt.

Anyway, now waiting for the next overload to cause more confusion.

I've heard that 'static' now has yet another meaning in C++ :((

blocks|key|2105044|text|中断是从连接到计算机的设备或从计算机内的程序向处理器发出的信号，指示需要立即注意的事件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2105045|中断提供了一种机制，通过该机制，其他模块(I/O、内存)可以中断处理器的正常处理。|2105046|中断向处理器警告需要中断处理器正在执行的当前代码的高优先级条件。|2105047|处理器通过暂停其当前活动、保存其状态并执行名为ISR的功能来处理该事件来进行响应。|2105048|此中断是暂时的，在中断处理程序完成后，处理器恢复正常活动。complete+article+here|offset|length|2105049|entityMap|0|LINK|mutability|MUTABLE|url|http://An+interrupt+is+a+signal+to+the+processor+from+a+device+attached+to+a+computer+or+from+a+program+within+the+computer+indicating+an+event+that+needs+immediate+attention.++Interrupts+provide+a+mechanism+by+which+other+modules+(I/O,+memory)+may+interrupt+the+normal+processing+of+the+processor.++An+interrupt+alerts+the+processor+to+a+high-priority+condition+requiring+the+interruption+of+the+current+code+the+processor+is+executing.++The+processor+responds+by+suspending+its+current+activities,+saving+its+state,+and+executing+a+function+called+an+ISR+to+deal+with+the+event.++This+interruption+is+temporary,+and,+after+the+interrupt+handler+finishes,+the+processor+resumes+normal+activities.^0|0|0|0|0|T|L|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@$J|Y|K|Z|1|10]]|A|$]]|$1|L|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

An interrupt is a signal to the processor from a device attached to a computer or from a program within the computer indicating an event that needs immediate attention.

Interrupts provide a mechanism by which other modules (I/O, memory) may interrupt the normal processing of the processor.

An interrupt alerts the processor to a high-priority condition requiring the interruption of the current code the processor is executing.

The processor responds by suspending its current activities, saving its state, and executing a function called an ISR to deal with the event.

This interruption is temporary, and, after the interrupt handler finishes, the processor resumes normal activities.
<a href="http://An%20interrupt%20is%20a%20signal%20to%20the%20processor%20from%20a%20device%20attached%20to%20a%20computer%20or%20from%20a%20program%20within%20the%20computer%20indicating%20an%20event%20that%20needs%20immediate%20attention.%20%20Interrupts%20provide%20a%20mechanism%20by%20which%20other%20modules%20(I/O,%20memory)%20may%20interrupt%20the%20normal%20processing%20of%20the%20processor.%20%20An%20interrupt%20alerts%20the%20processor%20to%20a%20high-priority%20condition%20requiring%20the%20interruption%20of%20the%20current%20code%20the%20processor%20is%20executing.%20%20The%20processor%20responds%20by%20suspending%20its%20current%20activities,%20saving%20its%20state,%20and%20executing%20a%20function%20called%20an%20ISR%20to%20deal%20with%20the%20event.%20%20This%20interruption%20is%20temporary,%20and,%20after%20the%20interrupt%20handler%20finishes,%20the%20processor%20resumes%20normal%20activities." rel="nofollow noreferrer">complete article here</a>

So I know an operating system call is a demand to the OS to receive some type of resource. What i don't know is whether or not the operating system call is an interrupt or not? Or are all operating system calls interrupts? I know a device interrupts the OS for a resource, but are operating system calls just instructions from a program and not an interrupt? Or is an interrupt just a special instruction?

Is an operating system call an interrupt?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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所以我知道操作系统调用是对操作系统的请求，以接收某种类型的资源。我不知道的是操作系统调用是否是中断？还是所有的操作系统调用都被中断了？我知道设备会中断操作系统获取资源，但是操作系统调用仅仅是来自程序的指令，而不是中断吗？或者中断只是一条特殊的指令？

问操作系统调用是中断吗？
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问操作系统调用是中断吗？EN