postbox.h

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#ifndef __POSTBOX_H__
#define __POSTBOX_H__
 
#include <stdint.h>
#if defined(__GNUC__) || defined(__clang__)
#ifndef __cplusplus
#include <stdbool.h>
#endif
#endif
#ifdef ARCH_X64
#include <Hal/x86_64_sched.h>
#elif ARCH_ARM64
#include <Hal/AA64/sched.h>
#endif
#include <Fs/vfs.h>
 
 
#define POSTBOX_CREATE  401
#define POSTBOX_DESTROY 402
#define POSTBOX_PUT_EVENT  403
#define POSTBOX_GET_EVENT  404
#define POSTBOX_CREATE_ROOT  405
#define POSTBOX_GET_EVENT_ROOT  406
 
#define POSTBOX_NO_EVENT  -1
#define POSTBOX_ROOT_ID    1
 
//#pragma pack(push,1)
/*
 * PostEvent -- event message structure
 */
typedef struct _post_event_ {
    uint8_t type;
    uint16_t to_id;
    uint16_t from_id;
    uint32_t dword;
    uint32_t dword2;
    uint32_t dword3;
    uint32_t dword4;
    uint32_t dword5;
    uint32_t dword6;
    uint32_t dword7;
    uint32_t dword8;
    uint32_t* pValue;
    uint32_t *pValue1;
    char* charValue;
    unsigned char* charValue2;
    char charValue3[100];
}PostEvent;
//#pragma pack(pop)
 
#ifdef ARCH_X64
#pragma pack(push,1)
#endif
typedef struct _postbox_ {
    uint64_t* address;
    uint16_t ownerID;
    int headIdx;
    int tailIdx;
    bool full;
    uint16_t size;
    struct _postbox_ *next;
    struct _postbox_* prev;
}PostBox;
#ifdef ARCH_X64
#pragma pack(pop)
#endif
 
extern void AuIPCPostBoxInitialise();
 
extern void PostBoxPutEvent(PostEvent* event);
 
#ifdef ARCH_X64
/*
 * PostBoxGetEvent -- get an event from post box and copy it to a
 * memory area
 * @param event -- pointer to a memory area
 * @param root -- is this post box is root
 * @param curr_thread -- Pointer to current thread
 */
extern int PostBoxGetEvent(PostEvent* event, bool root, AuThread* curr_thread);
#elif ARCH_ARM64
extern int PostBoxGetEvent(PostEvent* event, bool root, AA64Thread* curr_thread);
#endif
 
extern AuVFSNode* AuPostBOXGetNode();
 
extern void PostBoxCreate(bool root, uint16_t tid);
 
extern void PostBoxDestroyByID(uint16_t id);
 
extern int PostBoxIOControl(AuVFSNode* file, int code, void* arg);
 
 
#endif