IoT.js-API-Process.md

process

Platform Support

The following shows process module APIs available for each platform.

	Linux (Ubuntu)	Raspbian (Raspberry Pi)	Nuttx (STM32F4-Discovery)
process.nextTick	O	O	O
process.exit	O	O	O
process.cwd	O	O	O
process.chdir	O	O	O

※ On nuttx, you should pass absolute path to process.chdir.

process is unique global object can be accessed from anywhere.

Events

'exit'

• callback: Function(code)
• code: Number - exitCode

Emitted when IoT.js process is about to exit.

'uncaughtException'

• callback: Function(err)
• err: Error - error object uncaught by catch handler

Emitted there's no catch handler for exception.

Methods

process.chdir(path)

• path: String

Changes current working directory to path.

process.cwd()

Returns current working directory.

process.exit(code)

• code: Number - exitCode

Exits executing process with code.

process.nextTick(callback)

• callback: Function()

After current event loop finished, calls the callback function. The next tick callback will be called before any I/O events.

Member Variable

'arch'

Target Arch, one of (arm|ia32|x64|unknown)

'argv'

Argument vector to be passed to IoT.js

'board'

Target Board, one of (STM32F4DIS|RP2|unknown)

'env'

Environment object holding HOME and NODE_PATH. On NuttX NODE_PATH is /mnt/sdcard in default.

'platform'

Target Platform, one of (linux|nuttx|darwin|unknown)