Altera Embedded Peripherals IP - Manual (Page 262)

altera_avalon_mutex_trylock()
Prototype:
int altera_avalon_mutex_trylock(alt_mutex_dev* dev, alt_u32
value
)
Thread-safe: Yes.
Available from
ISR:
No.
Include: < altera_avalon_mutex.h >
Parameters:
dev
—the mutex device to lock.
value
—the new value to write to the mutex.
Returns:
0
= The mutex was successfully locked.
Others = The mutex was not locked.
Description:
altera_avalon_mutex_trylock()
tries once to lock the hardware mutex, and
returns immediately.
altera_avalon_mutex_unlock()
Prototype:
void altera_avalon_mutex_unlock(alt_mutex_dev* dev)
Thread-safe: Yes.
Available from
ISR:
No.
Include: <altera_avalon_mutex.h>
Parameters:
dev
—the mutex device to unlock.
Returns: Null.
Description:
altera_avalon_mutex_unlock()
releases a hardware mutex device. Upon
release, the value stored in the mutex is set to zero. If the caller does not hold
the mutex, the behavior of this function is undefined.
Document Revision History
Table 26-3: Document Revision History
Date and
Document
Version
Changes Made Summary of Changes
July 2014
v14.0.0 -Removed mention of SOPC Builder, updated to Qsys Maintenance Release
UG-01085
2014.24.07
altera_avalon_mutex_trylock() 26-5
Mutex Core Altera Corporation
Send Feedback