X-Git-Url: http://plrg.eecs.uci.edu/git/?p=model-checker.git;a=blobdiff_plain;f=action.h;h=68db2c35899c479b5aa1b0b9329f049a14b84e45;hp=f6bc19b57827e8d0aa26c6fdaa9d0bf412c950c8;hb=b6f06ab2c626eb6e0f044fa9c7d1b74fbc82a09d;hpb=ba8e01e37619cd2003116974e681912f55f667b7

diff --git a/action.h b/action.h
index f6bc19b..68db2c3 100644
--- a/action.h
+++ b/action.h
@@ -7,19 +7,55 @@
 
 #include <list>
 #include <cstddef>
+#include <inttypes.h>
 
-#include "threads.h"
-#include "libatomic.h"
 #include "mymemory.h"
-#define VALUE_NONE -1
+#include "memoryorder.h"
+#include "modeltypes.h"
 
+class ClockVector;
+class Thread;
+
+using std::memory_order;
+using std::memory_order_relaxed;
+using std::memory_order_acquire;
+using std::memory_order_release;
+using std::memory_order_acq_rel;
+using std::memory_order_seq_cst;
+
+/** Note that this value can be legitimately used by a program, and
+		hence by iteself does not indicate no value. */
+
+#define VALUE_NONE 1234567890
+
+/** A special value to represent a successful trylock */
+
+#define VALUE_TRYSUCCESS 1
+
+/** A special value to represent a failed trylock */
+#define VALUE_TRYFAILED 0
+
+/** @brief Represents an action type, identifying one of several types of
+ * ModelAction */
 typedef enum action_type {
-	THREAD_CREATE,
-	THREAD_YIELD,
-	THREAD_JOIN,
-	ATOMIC_READ,
-	ATOMIC_WRITE,
-	ATOMIC_RMW
+	MODEL_FIXUP_RELSEQ,   /**< Special ModelAction: finalize a release
+	                       *   sequence */
+	THREAD_CREATE,        /**< A thread creation action */
+	THREAD_START,         /**< First action in each thread */
+	THREAD_YIELD,         /**< A thread yield action */
+	THREAD_JOIN,          /**< A thread join action */
+	THREAD_FINISH,        /**< A thread completion action */
+	ATOMIC_READ,          /**< An atomic read action */
+	ATOMIC_WRITE,         /**< An atomic write action */
+	ATOMIC_RMWR,          /**< The read part of an atomic RMW action */
+	ATOMIC_RMW,           /**< The write part of an atomic RMW action */
+	ATOMIC_RMWC,          /**< Convert an atomic RMW action into a READ */
+	ATOMIC_INIT,          /**< Initialization of an atomic object (e.g.,
+	                       *   atomic_init()) */
+	ATOMIC_FENCE,         /**< A fence action */
+	ATOMIC_LOCK,          /**< A lock action */
+	ATOMIC_TRYLOCK,       /**< A trylock action */
+	ATOMIC_UNLOCK         /**< An unlock action */
 } action_type_t;
 
 /* Forward declaration */
@@ -31,31 +67,53 @@ class ClockVector;
  */
 class ModelAction {
 public:
-	ModelAction(action_type_t type, memory_order order, void *loc, int value);
+	ModelAction(action_type_t type, memory_order order, void *loc, uint64_t value = VALUE_NONE, Thread *thread = NULL);
 	~ModelAction();
-	void print(void);
+	void print() const;
 
 	thread_id_t get_tid() const { return tid; }
 	action_type get_type() const { return type; }
 	memory_order get_mo() const { return order; }
 	void * get_location() const { return location; }
-	int get_seq_number() const { return seq_number; }
+	modelclock_t get_seq_number() const { return seq_number; }
+	uint64_t get_value() const { return value; }
+	const ModelAction * get_reads_from() const { return reads_from; }
 
 	Node * get_node() const { return node; }
 	void set_node(Node *n) { node = n; }
 
+	void copy_from_new(ModelAction *newaction);
+	void set_seq_number(modelclock_t num);
+	void set_try_lock(bool obtainedlock);
+	bool is_relseq_fixup() const;
+	bool is_mutex_op() const;
+	bool is_lock() const;
+	bool is_trylock() const;
+	bool is_unlock() const;
+	bool is_success_lock() const;
+	bool is_failed_trylock() const;
 	bool is_read() const;
 	bool is_write() const;
+	bool is_rmwr() const;
+	bool is_rmwc() const;
 	bool is_rmw() const;
+	bool is_fence() const;
+	bool is_initialization() const;
 	bool is_acquire() const;
 	bool is_release() const;
 	bool is_seqcst() const;
 	bool same_var(const ModelAction *act) const;
 	bool same_thread(const ModelAction *act) const;
-	bool is_synchronizing(const ModelAction *act) const;
+	bool is_conflicting_lock(const ModelAction *act) const;
+	bool could_synchronize_with(const ModelAction *act) const;
 
-	void create_cv(ModelAction *parent = NULL);
-	void read_from(ModelAction *act);
+	void create_cv(const ModelAction *parent = NULL);
+	ClockVector * get_cv() const { return cv; }
+	bool read_from(const ModelAction *act);
+	bool synchronize_with(const ModelAction *act);
+
+	bool has_synchronized_with(const ModelAction *act) const;
+	bool happens_before(const ModelAction *act) const;
 
 	inline bool operator <(const ModelAction& act) const {
 		return get_seq_number() < act.get_seq_number();
@@ -64,6 +122,12 @@ public:
 		return get_seq_number() > act.get_seq_number();
 	}
 
+	void process_rmw(ModelAction * act);
+	void copy_typeandorder(ModelAction * act);
+
+	void set_sleep_flag() { sleep_flag=true; }
+	bool get_sleep_flag() { return sleep_flag; }
+
 	MEMALLOC
 private:
 
@@ -78,22 +142,26 @@ private:
 
 	/** The thread id that performed this action. */
 	thread_id_t tid;
-	
-	/** The value read or written (if RMW, then the value written). This
-	 * should probably be something longer. */
-	int value;
+
+	/** The value written (for write or RMW; undefined for read) */
+	uint64_t value;
+
+	/** The action that this action reads from. Only valid for reads */
+	const ModelAction *reads_from;
 
 	/** A back reference to a Node in NodeStack, if this ModelAction is
 	 * saved on the NodeStack. */
 	Node *node;
-	
-	int seq_number;
+
+	modelclock_t seq_number;
 
 	/** The clock vector stored with this action; only needed if this
 	 * action is a store release? */
 	ClockVector *cv;
+
+	bool sleep_flag;
 };
 
-typedef std::list<class ModelAction *> action_list_t;
+typedef std::list< ModelAction *, SnapshotAlloc<ModelAction *> > action_list_t;
 
 #endif /* __ACTION_H__ */