NAME

src/pmc/task.pmc - A concurrent task

DESCRIPTION

The Task PMC represents a concurrent running "green thread".

Functions

void init()

Initialize a concurrency task object.

void init_pmc(PMC *data)

Initializes a new Task with a Hash PMC with any or all of the keys:

birthtime

The time at which this Task was created.

code

An invokable PMC related to this task.

data

Some data that will be passed to code when invoked.

opcode_t *invoke(void *next)

Invokes whatever is in the Task's associated code.If the Task's data attribute is not null, pass it to the code as the first argument.

PMC *clone()

Create a copy of the task, resetting status, ID, and birthtime.

PMC *get_attr_str(STRING *name)

Gets the value of an attribute for this task.

void set_attr_str(STRING *name, PMC *value)

Sets the value of an attribute for this task.

void push_pmc(PMC *value)

Add value to the list of PMCs shared with this task.

PMC *pop_pmc()

Return a proxy for the last shared PMC.

void mark()

Mark any referenced strings and PMCs.

void visit(PMC *info)

This is used by freeze/thaw to visit the contents of the task.*info is the visit info, (see include/parrot/pmc_freeze.h).

void freeze(PMC *info)

Used to archive the task.

void thaw(PMC *info)

Used to unarchive the task.

void thawfinish(PMC *info)

Called after the task has been thawed.

Methods

METHOD send(PMC *message)

Send a message to this task.

METHOD code(PMC * code :optional)

Read or write optional code, an invokable PMC related to this task.

METHOD data(PMC * data :optional)

Reads or writes optional task-specific data, that will be passed to code when invoked.

METHOD kill()

Kill this task.

SEE ALSO

docs/pdds/pdd25_concurrency.pod.