shm.h

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#ifndef __SHM_H__
#define __SHM_H__
 
#include <stdint.h>
#include <process.h>
 
#define USER_SHARED_MEM_START 0x0000000080000000
 
//#pragma pack(push,1)
/*
 * AuSHM -- shared memory segment
 */
typedef struct _shm_ {
    uint16_t key;
    uint16_t id;
    uint64_t num_frames;
    uint64_t* frames;
    uint16_t link_count;
}AuSHM;
//#pragma pack(pop)
 
//#pragma pack(push,1)
typedef struct _shm_mapping_ {
    uint64_t start_addr;
    size_t length;
    AuSHM* shm;
}AuSHMMappings;
//#pragma pack(pop)
 
extern void AuInitialiseSHMMan();
 
/*
* AuGetSHMSeg -- searches and return a
* shm segment by its key
* @param key -- key to search
*/
extern AuSHM * AuGetSHMByID(uint16_t id);
 
extern int AuCreateSHM(AuProcess* proc, uint16_t key, size_t sz, uint8_t flags);
 
extern void* AuSHMObtainMem(AuProcess* proc, uint16_t id, void* shmaddr, int shmflg);
 
extern void AuSHMUnmap(uint16_t key, AuProcess* proc);
 
extern void AuSHMUnmapAll(AuProcess* proc);
 
#endif