#define MSG_NOSIGNAL 0
#endif
-#define GET_NTUPLES(x) ((int *)(x + sizeof(prefetchqelem_t)))
-#define GET_PTR_OID(x) ((unsigned int *)(x + sizeof(prefetchqelem_t) + sizeof(int)))
-#define GET_PTR_EOFF(x,n) ((short *)(x + sizeof(prefetchqelem_t) + sizeof(int) + (n*sizeof(unsigned int))))
-#define GET_PTR_ARRYFLD(x,n) ((short *)(x + sizeof(prefetchqelem_t) + sizeof(int) + (n*sizeof(unsigned int)) + (n*sizeof(short))))
-
-
-//Coordinator Messages
+/***********************************************************
+ * Macros
+ **********************************************************/
+#define GET_NTUPLES(x) ((int *)(x))
+#define GET_PTR_OID(x) ((unsigned int *)(x + sizeof(int)))
+#define GET_PTR_EOFF(x,n) ((short *)(x + sizeof(int) + (n*sizeof(unsigned int))))
+#define GET_PTR_ARRYFLD(x,n) ((short *)(x + sizeof(int) + (n*sizeof(unsigned int)) + (n*sizeof(short))))
+/*****************************************
+ * Coordinator Messages
+ ***************************************/
#define READ_REQUEST 1
#define READ_MULT_REQUEST 2
#define MOVE_REQUEST 3
#define TRANS_PREFETCH 8
#define TRANS_ABORT_BUT_RETRY_COMMIT_WITH_RELOCATING 9
-//Participant Messages
+/*********************************
+ * Participant Messages
+ *******************************/
#define OBJECT_FOUND 10
#define OBJECT_NOT_FOUND 11
#define OBJECTS_FOUND 12
#define TRANS_SUCESSFUL 21
#define TRANS_PREFETCH_RESPONSE 22
#define START_REMOTE_THREAD 23
-
-//Control bits for status of objects in Machine pile
-#define OBJ_LOCKED_BUT_VERSION_MATCH 14
-#define OBJ_UNLOCK_BUT_VERSION_MATCH 15
-#define VERSION_NO_MATCH 16
+#define THREAD_NOTIFY_REQUEST 24
+#define THREAD_NOTIFY_RESPONSE 25
+#define TRANS_UNSUCESSFUL 26
+#define CLOSE_CONNECTION 27
//Max number of objects
#define MAX_OBJECTS 20
+//Max remote-machine connections
+#define NUM_MACHINES 2
+#define LOADFACTOR 0.5
+#define DEFAULT_OBJ_STORE_SIZE 1048510 //1MB
+//Transaction id per machine
+#define TID_LEN 20
+#define LISTEN_PORT 2156
#include <stdlib.h>
#include "clookup.h"
#include "queue.h"
#include "mcpileq.h"
+#include "threadnotify.h"
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <time.h>
+#include "sockpool.h"
+#include "prelookup.h"
-#define DEFAULT_OBJ_STORE_SIZE 1048510 //1MB
-#define TID_LEN 20
//bit designations for status field of objheader
#define DIRTY 0x01
#define NEW 0x02
#include "structdefs.h"
typedef struct objheader {
+ threadlist_t *notifylist;
unsigned short version;
unsigned short rcount;
} objheader_t;
#define STATUS(x)\
*((unsigned int *) &(((struct ___Object___ *)((unsigned int) x + sizeof(objheader_t)))->___localcopy___))
+#define STATUSPTR(x)\
+ ((unsigned int *) &(((struct ___Object___ *)((unsigned int) x + sizeof(objheader_t)))->___localcopy___))
+
#define TYPE(x)\
((struct ___Object___ *)((unsigned int) x + sizeof(objheader_t)))->type
#else
typedef struct objheader {
+ threadlist_t *notifylist;
unsigned int oid;
unsigned short type;
unsigned short version;
#define OID(x) x->oid
#define TYPE(x) x->type
#define STATUS(x) x->status
+#define STATUSPTR(x) &x->status
#define GETSIZE(size, x) size=classsize[TYPE(x)]
#endif
struct objstr *next;
} objstr_t;
+typedef struct oidmidpair {
+ unsigned int oid;
+ unsigned int mid;
+} oidmidpair_t;
+
typedef struct transrecord {
objstr_t *cache;
chashtable_t *lookupTable;
struct ___Object___ * revertlist;
#endif
} transrecord_t;
+
// Structure is a shared structure that keeps track of responses from the participants
typedef struct thread_response {
char rcv_status;
char control; /* control message */
char trans_id[TID_LEN]; /* transaction id */
int mcount; /* participant count */
- short numread; /* no of objects read */
- short nummod; /* no of objects modified */
- short numcreated; /* no of objects created */
+ unsigned int numread; /* no of objects read */
+ unsigned int nummod; /* no of objects modified */
+ unsigned int numcreated; /* no of objects created */
int sum_bytes; /* total bytes of modified objects in a transaction */
} fixed_data_t;
unsigned int *listmid; /* Pointer to array holding list of participants */
char *objread; /* Pointer to array holding oid and version number of objects that are only read */
unsigned int *oidmod; /* Pointer to array holding oids of objects that are modified */
- unsigned int *oidcreated; /* Pointer to array holding oids of objects that are newly created */
+ unsigned int *oidcreated; /* Pointer to array holding oids of objects that are newly created */
} trans_req_data_t;
/* Structure that holds information of objects that are not found in the participant
trans_commit_data_t *transinfo; /* Holds information of objects locked and not found in the participant */
} local_thread_data_array_t;
-//Structure for members within prefetch tuples
-typedef struct member {
- short offset; /* Holds offset of the ptr field */
- short index; /* Holds the array index value */
- struct member *next;
-}trans_member_t;
+//Structure to store mid and socketid information
+typedef struct midSocketInfo {
+ unsigned int mid; /* To communicate with mid use sockid in this data structure*/
+ int sockid;
+} midSocketInfo_t;
/* Initialize main object store and lookup tables, start server thread. */
int dstmInit(void);
+void send_data(int fd, void *buf, int buflen);
+void recv_data(int fd, void *buf, int buflen);
+int recv_data_errorcode(int fd, void *buf, int buflen);
/* Prototypes for object header */
unsigned int getNewOID(void);
objstr_t *objstrCreate(unsigned int size); //size in bytes
void objstrDelete(objstr_t *store); //traverse and free entire list
void *objstrAlloc(objstr_t *store, unsigned int size); //size in bytes
+void clearObjStore(); // TODO:currently only clears the prefetch cache object store
/* end object store */
/* Prototypes for server portion */
-void *dstmListen();
+void *dstmListen(void *);
+int startlistening();
void *dstmAccept(void *);
int readClientReq(trans_commit_data_t *, int);
int processClientReq(fixed_data_t *, trans_commit_data_t *,unsigned int *, char *, void *, unsigned int *, int);
char handleTransReq(fixed_data_t *, trans_commit_data_t *, unsigned int *, char *, void *, int);
-int decideCtrlMessage(fixed_data_t *, trans_commit_data_t *, int *, int *, int *, int *, int *, void *, unsigned int *, unsigned int *, int);
-//int transCommitProcess(trans_commit_data_t *, int);
+char decideCtrlMessage(fixed_data_t *, trans_commit_data_t *, int *, int *, int *, int *, int *, void *, unsigned int *, unsigned int *, int);
int transCommitProcess(void *, unsigned int *, unsigned int *, int, int, int);
+void processReqNotify(unsigned int numoid, unsigned int *oid, unsigned short *version, unsigned int mid, unsigned int threadid);
/* end server portion */
/* Prototypes for transactions */
void addHost(unsigned int);
void mapObjMethod(unsigned short);
-void randomdelay(void);
+void randomdelay();
transrecord_t *transStart();
objheader_t *transRead(transrecord_t *, unsigned int);
-objheader_t *transCreateObj(transrecord_t *, unsigned int); //returns oid
+objheader_t *transCreateObj(transrecord_t *, unsigned int); //returns oid header
int transCommit(transrecord_t *record); //return 0 if successful
void *transRequest(void *); //the C routine that the thread will execute when TRANS_REQUEST begins
void decideResponse(thread_data_array_t *);// Coordinator decides what response to send to the participant
char sendResponse(thread_data_array_t *, int); //Sends control message back to Participants
-void *getRemoteObj(transrecord_t *, unsigned int, unsigned int);
-
-void *handleLocalReq(void *);
+void *getRemoteObj(transrecord_t *, unsigned int, unsigned int);// returns object header from main object store after object is copied into it from remote machine
+void *handleLocalReq(void *);//handles Local requests
int transComProcess(local_thread_data_array_t *);
int transAbortProcess(local_thread_data_array_t *);
-
+void transAbort(transrecord_t *trans);
+void sendPrefetchResponse(int sd, char *control, char *sendbuffer, int *size);
void prefetch(int, unsigned int *, unsigned short *, short*);
void *transPrefetch(void *);
void *mcqProcess(void *);
-void checkPrefetchTuples(prefetchqelem_t *);
-prefetchpile_t *foundLocal(prefetchqelem_t *);
-prefetchpile_t *makePreGroups(prefetchqelem_t *, int *);
-void checkPreCache(prefetchqelem_t *, int *, int, int, unsigned int, int, int, int);
+prefetchpile_t *foundLocal(char *);// returns node with prefetch elements(oids, offsets)
+int lookupObject(unsigned int * oid, short offset);
int transPrefetchProcess(transrecord_t *, int **, short);
void sendPrefetchReq(prefetchpile_t*, int);
-void getPrefetchResponse(int, int);
+int getPrefetchResponse(int);
unsigned short getObjType(unsigned int oid);
int startRemoteThread(unsigned int oid, unsigned int mid);
+/* Sends notification request for thread join, if sucessful returns 0 else returns -1 */
+int reqNotify(unsigned int *oidarry, unsigned short *versionarry, unsigned int numoid);
+void threadNotify(unsigned int oid, unsigned short version, unsigned int tid);
+int notifyAll(threadlist_t **head, unsigned int oid, unsigned int version);
+
/* end transactions */
#endif
projects / IRC.git / blobdiff