PHP parallel\Runtime Parallel Execution

说明

public parallel\Runtime::run ( Closure $task ) : ?Future

Shall schedule task for execution in parallel.

public parallel\Runtime::run ( Closure $task , array $argv ) : ?Future

Shall schedule task for execution in parallel, passing argv at execution time.

参数

task: A Closure with specific characteristics.
argv: An array of arguments with specific characteristics to be passed to task at execution time.

Task Characteristics

Closures scheduled for parallel execution must not:

accept or return by reference
accept or return objects
execute a limited set of instructions

Instructions prohibited in Closures intended for parallel execution are:

declare (anonymous) class
use (by-reference)
yield

Note:

Only declare class instructions are prohibited in closures or functions that are nested in tasks, no instructions are prohibited in the files which the task may include.

Arguments Characteristics

Arguments must not:

contain references
contain objects
contain resources

Note:

In the case of file stream resources, the resource will be cast to the file descriptor and passed as int where possible, this is unsupported on Windows.

返回值

Warning

The return \parallel\Future must not be ignored when the task contains a return or throw statement.

Exceptions

Warning

Shall throw \parallel\Runtime\Error\Closed if \parallel\Runtime was closed.

Warning

Shall throw \parallel\Runtime\Error\IllegalFunction if task is a closure created from an internal function.

Warning

Shall throw \parallel\Runtime\Error\IllegalInstruction if task contains illegal instructions.

Warning

Shall throw \parallel\Runtime\Error\IllegalParameter if task accepts or argv contains illegal variables.

Warning

Shall throw \parallel\Runtime\Error\IllegalReturn if task returns illegally.