system call
系统调用
系统呼叫 syscalls
系统调用
有些系统调用 (例如lchown(2))是BSD系统特有的。 Some syscalls , like lchown(2), are BSD-specific. The system call interface can be described from two perspectives.The data area passed to a system call is insufficient. Exit Records the exit code returned by a system call . 为减少系统调用 ,用户空间驱动实现marshalling。 To reduce the number of system calls , the user-space driver implements marshalling. Combinations with other parts of speech
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The process issues a system call (sometimes called a software interrupt); To execute a system call , a program must execute a special trap instruction. The data area passed to a system call is too small. The fork() is a system call use to create a new process. The system call level is not correct.Fork() is a system call that is used to creates a new process. The system call number goes in rax.The PSW plays an important role in system calls and I/O. The system call chroot() has a number of problems, as noted above.The system call level is incorrect.The fork() is a system call use to create a new process. At the top(see Figure 2) is the system call interface. But rm is a command, and unlink is a system call . 如果使用过fork()系统调用 ,可能熟悉父进程和子进程的概念。 If you have used the fork() system call you're probably familiar with the concept of parent and child processes. 您可以设置变量、异常错误、系统调用 、行和函数断点,还可以在"Breakpoints"(断点)窗口中查看它们。 You can set variable, exception, system call , line, and function breakpoints and view them in the Breakpoints window. 警告:一些系统调用 ,例如lchown(2),是特定于BSD系统。 Caveat: some syscalls , like lchown(2), are BSD-specific. 大多数Unix系统调用 都有Windows等价物,但Windows相对于Linux和macOS的行为可能不同。 Most Unix syscalls have Windows equivalents, but behavior may differ on Windows relative to Linux and macOS. 系统调用 可被大致分为五类:进程控制、文件管理、设备管理、信息维护和通信。System calls are broadly divided into five categories: process control, file management, device management, information maintenance and communication. 在NGINX里有两个操作--read()系统调用 和sendfile()--被分配到了线程池技巧。 In NGINX, two operations- the read() system call and sendfile()- are offloaded to thread pools. 在Unix下,您不应跨fork()系统调用 将打开的SQLite数据库携带到子进程中. Under Unix, you should not carry an open SQLite database across a fork() system call into the child process. 系统调用 (例如open(2)与read(2))定义了用户程序和底层操作系统之间的接口。System calls like open(2) and read(2) define the interface between user programs and the underlying operating system. . 这是通过系统调用 bind实现的,它为socket描述符(sd)分配一个服务器地址(sa):. This is achieved by the system call bind, which assigns the socket descriptor(sd) a server address(sa):. 也,strace可能非常冗长:许多系统调用 在程序员可能不知道的程序内执行。 Also, strace can be quite verbose: many system calls are executed within a program that the programmer may not be aware of. 您将会看到date(1)执行的所有系统调用 的格式化跟踪,结尾紧跟一行输出。 You will see a formatted trace of all the system calls executed by date(1) followed by its one line of output at the end. 在内核的2.1版本中,引入了sendfile系统调用 ,目的是简化通过网络和两个本地文件之间的数据传输。 In kernel version 2.1, the sendfile system call was introduced to simplify the transmission of data over the network and between two local files.
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