NAME 
src/pmc/scheduler.pmc - The concurrency scheduler
DESCRIPTION
Implements the core concurrency scheduler.
Vtable Functions
void init()- Initializes a concurrency scheduler object.
void init_pmc(PMC *data)- Initializes a new Scheduler with a
HashPMC with any or all of the keys: id- An
Integerrepresenting the unique identifier for this scheduler. void push_pmc(PMC *value)- Inserts a task into the task list, giving it a task ID one higher than the current maximum, and a birthtime of the current time.
PMC *pop_pmc()- Retrieves the next task from the task list. If the task index is invalid, recalculates it before retrieving the next task.
INTVAL get_integer()- Retrieves the number of pending tasks in the scheduler's task list.
void delete_keyed_int(INTVAL key)- Removes the task with the given task ID from the task list.
PMC *share_ro()- Sets this PMC as shared.
void destroy()- Frees the scheduler's underlying struct.
void mark()- Marks any referenced strings and PMCs as live.
void visit(visit_info *info)- Visits the contents of the scheduler (used by freeze/thaw).
*infois the visit info (see include/parrot/pmc_freeze.h).void freeze(visit_info *info)- Archives the scheduler.
void thaw(visit_info *info)- Unarchives the scheduler.
void thawfinish(visit_info *info)- Finishes thawing the scheduler.
Methods
METHOD add_handler(PMC *handler)- Adds a handler to the scheduler.
METHOD delete_handler(STRING *type :optional, INTVAL have_type :opt_flag)- Deletes a handler from the scheduler.
METHOD find_handler(PMC *task)- Searchs for a handler for the given task. If no handler is found, returns PMCNULL.
METHOD count_handlers(STRING *type :optional, INTVAL have_type :opt_flag)- Returns the number of handlers currently held by the scheduler.
If a type argument is passed,
only counts handlers of that type (
event,exception). If no type argument is passed, counts all handlers.
