Memory performance when speculation control is enabled, and instruction therefor
US-2015378915-A1 · Dec 31, 2015 · US
Transactional locking with read-write locks in transactional memory systems
US8973004B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8973004-B2 |
| Application number | US-49265409-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2009 |
| Priority date | Jun 26, 2009 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A system and method for transactional memory using read-write locks is disclosed. Each of a plurality of shared memory areas is associated with a respective read-write lock, which includes a read-lock portion indicating whether any thread has a read-lock for read-only access to the memory area and a write-lock portion indicating whether any thread has a write-lock for write access to the memory area. A thread executing a group of memory access operations as an atomic transaction acquires the proper read or write permissions before performing a memory operation. To perform a read access, the thread attempts to obtain the corresponding read-lock and succeeds if no other thread holds a write-lock for the memory area. To perform a write-access, the thread attempts to obtain the corresponding write-lock and succeeds if no other thread holds a write-lock or read-lock for the memory area.
First claim
Opening claim text (preview).
What is claimed: 1. A computer-implemented method, comprising: associating each of a plurality of shared memory areas with a respective read-write lock, wherein for each shared memory area the read-write lock includes a read-lock portion indicating whether any thread has a read-lock for read-only access to the associated shared memory area and a write-lock portion indicating whether any thread has a write-lock for write access to the associated shared memory area, wherein for each…
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Physics · mapped topic
Physics · mapped topic
- G06F9/467Primary
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8973004B2 cover?
- A system and method for transactional memory using read-write locks is disclosed. Each of a plurality of shared memory areas is associated with a respective read-write lock, which includes a read-lock portion indicating whether any thread has a read-lock for read-only access to the memory area and a write-lock portion indicating whether any thread has a write-lock for write access to the memory…
- Who is the assignee on this patent?
- Dice David, Shavit Nir N, Oracle America Inc
- What technology area does this patent fall under?
- Primary CPC classification G06F9/467. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).