InterruptUnlock()

Release a critical section in an interrupt handler

Synopsis:

#include <sys/neutrino.h>

void InterruptUnlock( intrspin_t* spinlock );

Since:

BlackBerry 10.0.0

Arguments:

spinlock
The spinlock (a variable shared between the interrupt handler and a thread) used in a call to InterruptLock() to lock the handler.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The InterruptUnlock() function releases a critical section by unlocking the specified spinlock, reenabling interrupts. You can call this function from a thread or from an interrupt handler.

Before calling this function, the thread must:

  • have the PROCMGR_AID_IO ability enabled. For more information, see procmgr_ability().
  • request I/O privileges by calling:
    ThreadCtl( _NTO_TCTL_IO, 0 );
    

If the thread doesn't do these things, it might SIGSEGV when it calls InterruptUnlock().

Classification:

QNX Neutrino

Safety:  
Cancellation point No
Interrupt handler Yes
Signal handler Yes
Thread Yes

Last modified: 2014-06-24



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