* iteself does not indicate no value.
*/
#define VALUE_NONE 0xdeadbeef
+#define WRITE_REFERENCED ((void *)0x1)
/**
* @brief The "location" at which a fence occurs
PTHREAD_CREATE, // < A pthread creation action
PTHREAD_JOIN, // < A pthread join action
- ATOMIC_UNINIT, // < Represents an uninitialized atomic
NONATOMIC_WRITE, // < Represents a non-atomic store
ATOMIC_INIT, // < Initialization of an atomic object (e.g., atomic_init())
ATOMIC_WRITE, // < An atomic write action
ATOMIC_WAIT, // < A wait action
ATOMIC_TIMEDWAIT, // < A timed wait action
ATOMIC_ANNOTATION, // < An annotation action to pass information to a trace analysis
+ READY_FREE, // < Write is ready to be freed
+ ATOMIC_NOP // < Placeholder
} action_type_t;
* @brief Represents a single atomic action
*
* A ModelAction is always allocated as non-snapshotting, because it is used in
- * multiple executions during backtracking. Except for fake uninitialized
- * (ATOMIC_UNINIT) ModelActions, each action is assigned a unique sequence
+ * multiple executions during backtracking. Except for non-atomic write
+ * ModelActions, each action is assigned a unique sequence
* number.
*/
class ModelAction {
thread_id_t get_tid() const { return tid; }
action_type get_type() const { return type; }
+ void set_type(action_type _type) { type = _type; }
+ void set_free() { type = READY_FREE; }
memory_order get_mo() const { return order; }
memory_order get_original_mo() const { return original_order; }
void set_mo(memory_order order) { this->order = order; }
uint64_t get_write_value() const;
uint64_t get_return_value() const;
ModelAction * get_reads_from() const { return reads_from; }
- uint64_t get_time() const {return time;}
+ uint64_t get_time() const { return time; }
+ void set_time(uint64_t _time) { time = _time; }
cdsc::mutex * get_mutex() const;
void set_read_from(ModelAction *act);
bool is_trylock() const;
bool is_unlock() const;
bool is_wait() const;
+ bool is_timedwait() const;
+ bool is_create() const;
bool is_notify() const;
bool is_notify_one() const;
bool is_success_lock() const;
bool is_failed_trylock() const;
bool is_atomic_var() const;
- bool is_uninitialized() const;
bool is_read() const;
bool is_write() const;
+ bool is_free() const;
bool is_yield() const;
bool could_be_write() const;
bool is_rmwr() const;
/* to accomodate pthread create and join */
Thread * thread_operand;
void set_thread_operand(Thread *th) { thread_operand = th; }
- void set_uninit_action(ModelAction *act) { uninitaction = act; }
- ModelAction * get_uninit_action() { return uninitaction; }
- void setTraceRef(sllnode<ModelAction *> *ref) { trace_ref = ref; }
- void setThrdMapRef(sllnode<ModelAction *> *ref) { thrdmap_ref = ref; }
+
void setActionRef(sllnode<ModelAction *> *ref) { action_ref = ref; }
- sllnode<ModelAction *> * getTraceRef() { return trace_ref; }
- sllnode<ModelAction *> * getThrdMapRef() { return thrdmap_ref; }
sllnode<ModelAction *> * getActionRef() { return action_ref; }
+
SNAPSHOTALLOC
private:
const char * get_type_str() const;
/** @brief The last fence release from the same thread */
const ModelAction *last_fence_release;
- ModelAction * uninitaction;
/**
* @brief The clock vector for this operation
*/
ClockVector *cv;
ClockVector *rf_cv;
- sllnode<ModelAction *> * trace_ref;
- sllnode<ModelAction *> * thrdmap_ref;
sllnode<ModelAction *> * action_ref;
-
/** @brief The value written (for write or RMW; undefined for read) */
uint64_t value;
/**
* @brief The sequence number of this action
*
- * Except for ATOMIC_UNINIT actions, this number should be unique and
+ * Except for non atomic write actions, this number should be unique and
* should represent the action's position in the execution order.
*/
modelclock_t seq_number;