Comtrol eCos - Manual (Page 394)

Chapter 18. Device Driver Interface to the Kernel
cyg_drv_spinlock_destroy
Function:
void cyg_drv_spinlock_destroy(cyg_spinlock_t *lock )
Arguments:
lock - pointer to spinlock destroy
Result:
None
Level:
Thread
Description:
Destroy a spinlock that is no longer of use. There should be no CPUs attempting to claim the lock at the time
this function is called, otherwise the behavior is undefined.
cyg_drv_spinlock_spin
Function:
void cyg_drv_spinlock_spin(cyg_spinlock_t *lock )
Arguments:
lock - pointer to spinlock to claim
Result:
None
Level:
ISR
Description:
Claim a spinlock, waiting in a busy loop until it is available. Wherever this is called from, this operation effec-
tively pauses the CPU until it succeeds. This operations should therefore be used sparingly, and in situations
where deadlocks/livelocks cannot occur. Also see
cyg_drv_spinlock_spin_intsave() .
cyg_drv_spinlock_clear
Function:
void cyg_drv_spinlock_clear(cyg_spinlock_t *lock )
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