Interested to Buy Any Domain ? << Click Here >> for more details...
What is mutex precisely used for?
- 2 Answers
- 7881 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / rohil
The mutex (mutually exclusion) variables are used thread
synchroniization and for protecting the shared memory(data
segment) when multiple writes occur
| Is This Answer Correct ? | 23 Yes | 0 No |
Answer / achal
The above is correct. To be more specific, a CPU might need
to access some hardware device say I2c interface. Now if 2
processes in running state try to acquire and use I2c for
some data transfer, it might create problems, when one of
them hasn't finished its operations with the device. So
whenever some process has to make use of I2C it should lock
upon the mutex object for I2c device. And after the
operation gets finished it unlocks the mutex. Now some
other process can use I2c by mutex lock.
Similarly mutex object can be used to safegaurd some other
device resources.
| Is This Answer Correct ? | 22 Yes | 4 No |
Explain the difference between mutexes vs semaphores?
What are the different types of buses used by the embedded systems?
What do you do to stay abreast of the latest technologies and tools?
Describe a pattern that is not the factory pattern?
Tell me what is the difference between hardware design and software design?
Explain me what is kernel paging?
Do you know what is priority inheritance?
How can you optimize the i/o performance?
Describe the life-cycle of a software development (application design) process.
Explain what are the uses of the keyword static?
What's the difference between locking and lockless (optimistic and pessimistic) concurrency models?
How to reduce interrupt latency?
86 Family 
