NAME 
stm.ops -- Software transactional memory related ops
DESCRIPTION
Operations for software transactional memory. Includes all transaction manipulating flow-control, actual transacted data manipulation occurs through STMRef/STMVar PMCs.
Parrot STM operations
- stm_start()
- Start a new transaction.
- stm_validate(in LABEL)
- If the current transaction is invalid jump to $1; otherwise, excecution continues normally.
- If there is no active transaction, execution continues normally.
- stm_commit(inconst LABEL)
- Commits the most recently opened transaction. Jumps to $1 if the commit fails. (If the outer transaction is invalid, this should succeed always.)
- If stm_commit jumps to $1, then the transaction will have been aborted.
- stm_wait(inconst LABEL)
- Does what stm_wait does, but if the outer transaction is invalid after waiting or after the inner transaction is aborted, jumps to $1.
- (The jump is needed because otherwise the inner transaction may never succeed because the outer transaction constrains it to not see new values.)
- stm_abort()
- Aborts the most recently opened transaction.
- stm_depth(out INT)
- Writes the number transactions active in this thread into $1.
COPYRIGHT
Copyright 2006-2008, The Perl Foundation.
LICENSE
This program is free software. It is subject to the same license as the Parrot interpreter itself.
