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In the terminology of operating systems, a process is a space in which a program can execute. Emacs runs in a process. Emacs Lisp programs can invoke other programs in processes of their own. These are called subprocesses or child processes of the Emacs process, which is their parent process.
A subprocess of Emacs may be synchronous or asynchronous, depending on how it is created. When you create a synchronous subprocess, the Lisp program waits for the subprocess to terminate before continuing execution. When you create an asynchronous subprocess, it can run in parallel with the Lisp program. This kind of subprocess is represented within Emacs by a Lisp object which is also called a “process.” Lisp programs can use this object to communicate with the subprocess or to control it. For example, you can send signals, obtain status information, receive output from the process, or send input to it.
This function returns t if object is a process, nil
otherwise.
| 37.1 Functions that Create Subprocesses | Functions that start subprocesses. | |
| 37.2 Shell Arguments | Quoting an argument to pass it to a shell. | |
| 37.3 Creating a Synchronous Process | Details of using synchronous subprocesses. | |
| 37.4 Creating an Asynchronous Process | Starting up an asynchronous subprocess. | |
| 37.5 Deleting Processes | Eliminating an asynchronous subprocess. | |
| 37.6 Process Information | Accessing run-status and other attributes. | |
| 37.7 Sending Input to Processes | Sending input to an asynchronous subprocess. | |
| 37.8 Sending Signals to Processes | Stopping, continuing or interrupting an asynchronous subprocess. | |
| 37.9 Receiving Output from Processes | Collecting output from an asynchronous subprocess. | |
| 37.10 Sentinels: Detecting Process Status Changes | Sentinels run when process run-status changes. | |
| 37.11 Querying Before Exit | Whether to query if exiting will kill a process. | |
| 37.12 Transaction Queues | Transaction-based communication with subprocesses. | |
| 37.13 Network Connections | Opening network connections. | |
| 37.14 Network Servers | Network servers let Emacs accept net connections. | |
| 37.15 Datagrams | UDP network connections. | |
| 37.16 Low-Level Network Access | Lower-level but more general function to create connections and servers. | |
| 37.17 Misc Network Facilities | Additional relevant functions for network connections. | |
| 37.18 Packing and Unpacking Byte Arrays | Using bindat to pack and unpack binary data. |
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Ce document a été généré par Eric Reinbold le 13 Octobre 2007 en utilisant texi2html 1.78.