interrupt.c File Reference

Detailed Description

methods and datastructures for catching the user CTRL-C interrupt

Author

Tobias Achterberg

Definition in file interrupt.c.

#include <assert.h>
#include <sys/types.h>
#include <stdlib.h>
#include <signal.h>
#include "scip/def.h"
#include "blockmemshell/memory.h"
#include "scip/interrupt.h"

Go to the source code of this file.

Functions
static void	interruptHandler (int signum)
SCIP_RETCODE	SCIPinterruptCreate (SCIP_INTERRUPT **interrupt)
void	SCIPinterruptFree (SCIP_INTERRUPT **interrupt)
void	SCIPinterruptCapture (SCIP_INTERRUPT *interrupt)
void	SCIPinterruptRelease (SCIP_INTERRUPT *interrupt)
SCIP_Bool	SCIPinterrupted (void)

Variables
static volatile int	ninterrupts = 0

Function Documentation

static void interruptHandler ( int  signum )

static

interrupt handler for CTRL-C interrupts

Parameters

signum

interrupt signal number

Definition at line 59 of file interrupt.c.

References ninterrupts.

Referenced by SCIPinterruptCapture().

SCIP_RETCODE SCIPinterruptCreate

(

SCIP_INTERRUPT **

interrupt

)

creates a CTRL-C interrupt data

Parameters

interrupt

pointer to store the CTRL-C interrupt data

Definition at line 76 of file interrupt.c.

References BMSallocMemory, NULL, SCIP_ALLOC, and SCIP_OKAY.

Referenced by SCIPcreate().

void SCIPinterruptFree

(

SCIP_INTERRUPT **

interrupt

)

frees a CTRL-C interrupt data

Parameters

interrupt

pointer to the CTRL-C interrupt data

Definition at line 89 of file interrupt.c.

References BMSfreeMemory, and NULL.

Referenced by SCIPfree().

void SCIPinterruptCapture

(

SCIP_INTERRUPT *

interrupt

)

captures the CTRL-C interrupt to call the SCIP's own interrupt handler

Parameters

interrupt

CTRL-C interrupt data

Definition at line 99 of file interrupt.c.

References interruptHandler(), ninterrupts, NULL, SCIP_Interrupt::nuses, and SCIP_Interrupt::oldsigaction.

Referenced by SCIPpresolve(), and SCIPsolve().

void SCIPinterruptRelease

(

SCIP_INTERRUPT *

interrupt

)

releases the CTRL-C interrupt and restores the old interrupt handler

Parameters

interrupt

CTRL-C interrupt data

Definition at line 128 of file interrupt.c.

References NULL, SCIP_Interrupt::nuses, and SCIP_Interrupt::oldsigaction.

Referenced by SCIPpresolve(), and SCIPsolve().

SCIP_Bool SCIPinterrupted

(

void

)

returns whether the user interrupted by pressing CTRL-C

Definition at line 147 of file interrupt.c.

References ninterrupts.

Referenced by SCIPpressedCtrlC(), and SCIPsolveIsStopped().

Variable Documentation

volatile int ninterrupts = 0

static

static variable counting the number of CTRL-C interrupts

Definition at line 34 of file interrupt.c.

Referenced by interruptHandler(), SCIPinterruptCapture(), and SCIPinterrupted().