-#ifndef DATARACE_H
+/** @file datarace.h
+ * @brief Data race detection code.
+ */
+
+#ifndef __DATARACE_H__
+#define __DATARACE_H__
+
#include "config.h"
#include <stdint.h>
-#include "clockvector.h"
+#include "modeltypes.h"
+#include "classlist.h"
+#include "hashset.h"
struct ShadowTable {
void * array[65536];
uint64_t array[65536];
};
-#define MASK16BIT 0xffff
+struct DataRace {
+ /* Clock and thread associated with first action. This won't change in
+ response to synchronization. */
-void initRaceDetector();
-void raceCheckWrite(thread_id_t thread, void *location, ClockVector *currClock);
-void raceCheckRead(thread_id_t thread, void *location, ClockVector *currClock);
+ thread_id_t oldthread;
+ modelclock_t oldclock;
+ /* Record whether this is a write, so we can tell the user. */
+ bool isoldwrite;
+
+ /* Model action associated with second action. This could change as
+ a result of synchronization. */
+ ModelAction *newaction;
+ /* Record whether this is a write, so we can tell the user. */
+ bool isnewwrite;
+ /* Address of data race. */
+ const void *address;
+ void * backtrace[64];
+ int numframes;
+};
+#define MASK16BIT 0xffff
-/** Encoding idea:
- * (void *) Either:
- * (1) points to a full record or
- *
- * (2) encodes the information in a 64 bit word. Encoding is as
- * follows: lowest bit set to 1, next 8 bits are read thread id, next
- * 23 bits are read clock vector, next 8 bites are write thread id,
- * next 23 bits are write clock vector. */
+void initRaceDetector();
+void raceCheckWrite(thread_id_t thread, void *location);
+void atomraceCheckWrite(thread_id_t thread, void *location);
+void raceCheckRead(thread_id_t thread, const void *location);
+void atomraceCheckRead(thread_id_t thread, const void *location);
+void recordWrite(thread_id_t thread, void *location);
+void recordCalloc(void *location, size_t size);
+void assert_race(struct DataRace *race);
+bool hasNonAtomicStore(const void *location);
+void setAtomicStoreFlag(const void *location);
+void getStoreThreadAndClock(const void *address, thread_id_t * thread, modelclock_t * clock);
+/**
+ * @brief A record of information for detecting data races
+ */
struct RaceRecord {
- int *readClock;
+ modelclock_t *readClock;
thread_id_t *thread;
- int capacity;
- int numReads;
+ int numReads : 31;
+ int isAtomic : 1;
thread_id_t writeThread;
- int writeClock;
+ modelclock_t writeClock;
};
+unsigned int race_hash(struct DataRace *race);
+bool race_equals(struct DataRace *r1, struct DataRace *r2);
+
#define INITCAPACITY 4
#define ISSHORTRECORD(x) ((x)&0x1)
-#define THREADMASK 0xff
+#define THREADMASK 0x3f
#define RDTHREADID(x) (((x)>>1)&THREADMASK)
-#define READMASK 0x07fffff
-#define READVECTOR(x) (((x)>>9)&READMASK)
+#define READMASK 0x1ffffff
+#define READVECTOR(x) (((x)>>7)&READMASK)
#define WRTHREADID(x) (((x)>>32)&THREADMASK)
#define WRITEMASK READMASK
-#define WRITEVECTOR(x) (((x)>>40)&WRITEMASK)
+#define WRITEVECTOR(x) (((x)>>38)&WRITEMASK)
-#define ENCODEOP(rdthread, rdtime, wrthread, wrtime) (0x1ULL | ((rdthread)<<1) | ((rdtime) << 9) | (((uint64_t)wrthread)<<32) | (((uint64_t)wrtime)<<40))
+#define ATOMICMASK (0x1ULL << 63)
+#define NONATOMICMASK ~(0x1ULL << 63)
+
+/**
+ * The basic encoding idea is that (void *) either:
+ * -# points to a full record (RaceRecord) or
+ * -# encodes the information in a 64 bit word. Encoding is as
+ * follows:
+ * - lowest bit set to 1
+ * - next 6 bits are read thread id
+ * - next 25 bits are read clock vector
+ * - next 6 bits are write thread id
+ * - next 25 bits are write clock vector
+ * - highest bit is 1 if the write is from an atomic
+ */
+#define ENCODEOP(rdthread, rdtime, wrthread, wrtime) (0x1ULL | ((rdthread)<<1) | ((rdtime) << 7) | (((uint64_t)wrthread)<<32) | (((uint64_t)wrtime)<<38))
#define MAXTHREADID (THREADMASK-1)
#define MAXREADVECTOR (READMASK-1)
#define MAXWRITEVECTOR (WRITEMASK-1)
-#endif
+
+typedef HashSet<struct DataRace *, uintptr_t, 0, model_malloc, model_calloc, model_free, race_hash, race_equals> RaceSet;
+
+#endif /* __DATARACE_H__ */