src/aig/ivy/ivyMem.c File Reference

#include "ivy.h"

Include dependency graph for ivyMem.c:

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Defines
#define	IVY_PAGE_SIZE   12
#define	IVY_PAGE_MASK   4095
Functions
void	Ivy_ManStartMemory (Ivy_Man_t *p)
void	Ivy_ManStopMemory (Ivy_Man_t *p)
void	Ivy_ManAddMemory (Ivy_Man_t *p)

---

Define Documentation

#define IVY_PAGE_MASK   4095

Definition at line 29 of file ivyMem.c.

#define IVY_PAGE_SIZE   12

CFile****************************************************************

FileName [ivyMem.c]

SystemName [ABC: Logic synthesis and verification system.]

PackageName [And-Inverter Graph package.]

Synopsis [Memory management for the AIG nodes.]

Author [Alan Mishchenko]

Affiliation [UC Berkeley]

Date [Ver. 1.0. Started - May 11, 2006.]

Revision [

Id

ivyMem.c,v 1.00 2006/05/11 00:00:00 alanmi Exp

] DECLARATIONS ///

Definition at line 28 of file ivyMem.c.

---

Function Documentation

void Ivy_ManAddMemory

(

Ivy_Man_t *

p

)

Function*************************************************************

Synopsis [Allocates additional memory for the nodes.]

Description [Allocates IVY_PAGE_SIZE nodes. Aligns memory by 32 bytes. Records the pointer to the AIG manager in the -1 entry.]

SideEffects []

SeeAlso []

Definition at line 86 of file ivyMem.c.

{
    char * pMemory;
    int i, nBytes;
    int EntrySizeMax = 128;
    assert( sizeof(Ivy_Obj_t) <= EntrySizeMax );
    assert( p->pListFree == NULL );
//    assert( (Ivy_ManObjNum(p) & IVY_PAGE_MASK) == 0 );
    // allocate new memory page
    nBytes = sizeof(Ivy_Obj_t) * (1<<IVY_PAGE_SIZE) + EntrySizeMax;
    pMemory = ALLOC( char, nBytes );
    Vec_PtrPush( p->vChunks, pMemory );
    // align memory at the 32-byte boundary
    pMemory = pMemory + EntrySizeMax - (((int)pMemory) & (EntrySizeMax-1));
    // remember the manager in the first entry
    Vec_PtrPush( p->vPages, pMemory );
    // break the memory down into nodes
    p->pListFree = (Ivy_Obj_t *)pMemory;
    for ( i = 1; i <= IVY_PAGE_MASK; i++ )
    {
        *((char **)pMemory) = pMemory + sizeof(Ivy_Obj_t);
        pMemory += sizeof(Ivy_Obj_t);
    }
    *((char **)pMemory) = NULL;
}

void Ivy_ManStartMemory

(

Ivy_Man_t *

p

)

FUNCTION DEFINITIONS ///Function*************************************************************

Synopsis [Starts the internal memory manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 46 of file ivyMem.c.

{
    p->vChunks = Vec_PtrAlloc( 128 );
    p->vPages = Vec_PtrAlloc( 128 );
}

void Ivy_ManStopMemory

(

Ivy_Man_t *

p

)

Function*************************************************************

Synopsis [Stops the internal memory manager.]

Description []

SideEffects []

SeeAlso []

Definition at line 63 of file ivyMem.c.

{
    void * pMemory;
    int i;
    Vec_PtrForEachEntry( p->vChunks, pMemory, i )
        free( pMemory );
    Vec_PtrFree( p->vChunks );
    Vec_PtrFree( p->vPages );
    p->pListFree = NULL;
}