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InterruptEnable()
Enables external interrupts on the current CPU core of the calling thread

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InterruptEnable()

QNX SDP8.0C Library ReferenceAPIDeveloper

Enables external interrupts on the current CPU core of the calling thread

Synopsis:

#include <sys/neutrino.h>

void InterruptEnable( void );

Library:

libc

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

Description:

The InterruptEnable() function enables all external interrupts on the current CPU core of the calling thread; all other CPUs are unaffected.

Before calling this function:

The process must have the PROCMGR_AID_IO ability enabled. For more information, see procmgr_ability().
The calling thread must have obtained I/O privileges by calling:
```
ThreadCtl( _NTO_TCTL_IO_LEVEL, (void*)_NTO_IO_LEVEL_1 );
```

If you don't do these things, the thread might SIGSEGV when it calls InterruptEnable().

You should call this function as quickly as possible after calling InterruptDisable().

Note:

The InterruptEnable() function doesn't support nesting. If a specific thread calls this function once and then calls it again without having disabled hardware interrupts, the second call has no effect.

Classification:


Safety:
Cancellation point	No
Signal handler	Yes
Thread	Yes

Page updated: May 17, 2024