struct ShadowTable *root;
+/** This function initialized the data race detector. */
void initRaceDetector() {
root=(struct ShadowTable *) calloc(sizeof(struct ShadowTable),1);
}
+/** This function looks up the entry in the shadow table corresponding to a
+ * given address.*/
static uint64_t * lookupAddressEntry(void * address) {
struct ShadowTable *currtable=root;
-#ifdef BIT48
- currtable=(struct ShadowTable *) currtable->array[(((uintptr_t)address)>>32)&0xffff];
+#if BIT48
+ currtable=(struct ShadowTable *) currtable->array[(((uintptr_t)address)>>32)&MASK16BIT];
if (currtable==NULL) {
currtable=(struct ShadowTable *) (root->array[(((uintptr_t)address)>>32)&MASK16BIT]=calloc(sizeof(struct ShadowTable),1));
}
return tid1 != tid2 && clock2 != 0 && clock1->getClock(tid2) <= clock2;
}
+/**
+ * Expands a record from the compact form to the full form. This is
+ * necessary for multiple readers or for very large thread ids or time
+ * stamps. */
static void expandRecord(uint64_t * shadow) {
uint64_t shadowval=*shadow;
*shadow=(uint64_t) record;
}
+/** This function is called when we detect a data race.*/
static void reportDataRace() {
printf("The reportDataRace method should report useful things about this datarace!\n");
}
+/** This function does race detection for a write on an expanded record. */
void fullRaceCheckWrite(thread_id_t thread, uint64_t * shadow, ClockVector *currClock) {
struct RaceRecord * record=(struct RaceRecord *) (*shadow);
record->writeClock=ourClock;
}
+/** This function does race detection on a write. */
void raceCheckWrite(thread_id_t thread, void *location, ClockVector *currClock) {
uint64_t * shadow=lookupAddressEntry(location);
uint64_t shadowval=*shadow;
*shadow = ENCODEOP(0, 0, threadid, ourClock);
}
+/** This function does race detection on a read for an expanded record. */
void fullRaceCheckRead(thread_id_t thread, uint64_t * shadow, ClockVector *currClock) {
struct RaceRecord * record=(struct RaceRecord *) (*shadow);
record->numReads=copytoindex+1;
}
+/** This function does race detection on a read. */
void raceCheckRead(thread_id_t thread, void *location, ClockVector *currClock) {
uint64_t * shadow=lookupAddressEntry(location);
uint64_t shadowval=*shadow;