RTS/include/SECTOR/fixAlloc.hh

#ifndef _FIX_ALLOC_HH_
#define _FIX_ALLOC_HH_

#include <semLib.h>

#define FIX_ALLOC_TMOUT         1000    // 10 seconds...

class fixAlloc 
{
public:
        fixAlloc(char *wh, int bnum, int bytes) ;
        ~fixAlloc() ;

        void resize(char *wh, int bnum, int bytes) ;

        char *alloc(int bytes, int block=1)  ;
        int free(void *wh)  ;
        void clear(void) ;      
        void shrink(void *wh, int real) ;
        int check(void *wh) ;
        int getblk(void *wh) ;

        int take_mutex(void) {  return semTake(semutex,FIX_ALLOC_TMOUT) ; } ; 
        int take_semfree(void)  {  return semTake(semfree,FIX_ALLOC_TMOUT) ; } ; 
        int give_mutex(void) {  return semGive(semutex) ; } ; 
        int give_semfree(void)  {  return semGive(semfree) ; } ; 
        int alloced ;   // for debugging

        int blbytes ;
        int blnum ;
private:
        char *where ;
        int myalloc ;
        int cleared ;
        int *desc ;     // storage for states

        int last_free ;
        int last_free_blks ;
        
        SEM_ID semutex ;
        SEM_ID semfree ;
        
} ;


#endif

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