X-Git-Url: http://plrg.eecs.uci.edu/git/?p=c11tester.git;a=blobdiff_plain;f=action.h;h=be87eca33f7400da44e308a598c6c3084044d620;hp=53107ea81762d33ab6a63ef2fa7e69176b379b1c;hb=7966c737f2a88e5e1a56817eb9f6fdaead3eca92;hpb=06c0e4f929e94ae837186b50d7d75138bf2d0fd2 diff --git a/action.h b/action.h index 53107ea8..be87eca3 100644 --- a/action.h +++ b/action.h @@ -1,55 +1,135 @@ +/** @file action.h + * @brief Models actions taken by threads. + */ + #ifndef __ACTION_H__ #define __ACTION_H__ #include #include +#include -#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 0xdeadbeef + +/** 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 */ + ATOMIC_NOTIFY_ONE, /**< A notify_one action */ + ATOMIC_NOTIFY_ALL, /**< A notify all action */ + ATOMIC_WAIT /**< A wait action */ } action_type_t; /* Forward declaration */ class Node; class ClockVector; + /** * The ModelAction class encapsulates an atomic action. */ - 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() { return tid; } - action_type get_type() { return type; } - memory_order get_mo() { return order; } - void * get_location() { return location; } - int get_seq_number() const { return seq_number; } + 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; } + 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() { return node; } + Node * get_node() const { return node; } void set_node(Node *n) { node = n; } - bool is_read(); - bool is_write(); - bool is_acquire(); - bool is_release(); - bool same_var(ModelAction *act); - bool same_thread(ModelAction *act); - bool is_dependent(ModelAction *act); - - void create_cv(ModelAction *parent = NULL); - void read_from(ModelAction *act); + void set_read_from(const ModelAction *act); + + /** Store the most recent fence-release from the same thread + * @param fence The fence-release that occured prior to this */ + void set_last_fence_release(const ModelAction *fence) { last_fence_release = fence; } + /** @return The most recent fence-release from the same thread */ + const ModelAction * get_last_fence_release() const { return last_fence_release; } + + void copy_from_new(ModelAction *newaction); + void set_seq_number(modelclock_t num); + void set_try_lock(bool obtainedlock); + bool is_thread_start() const; + bool is_relseq_fixup() const; + bool is_mutex_op() const; + bool is_lock() const; + bool is_trylock() const; + bool is_unlock() const; + bool is_wait() const; + bool is_notify() const; + bool is_notify_one() const; + bool is_success_lock() const; + bool is_failed_trylock() const; + bool is_read() const; + bool is_write() const; + bool could_be_write() const; + bool is_rmwr() const; + bool is_rmwc() const; + bool is_rmw() const; + bool is_fence() const; + bool is_initialization() const; + bool is_relaxed() 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_conflicting_lock(const ModelAction *act) const; + bool could_synchronize_with(const ModelAction *act) const; + + void create_cv(const ModelAction *parent = NULL); + ClockVector * get_cv() const { return cv; } + 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(); @@ -58,6 +138,13 @@ 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; } + unsigned int hash() const; + MEMALLOC private: @@ -72,20 +159,29 @@ private: /** The thread id that performed this action. */ thread_id_t tid; - - /** 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; + + /** The last fence release from the same thread */ + const ModelAction *last_fence_release; + + /** A back reference to a Node in NodeStack, if this ModelAction is + * saved on the NodeStack. */ Node *node; - - int seq_number; - /** The clock vector stored with this action if this action is a - * store release */ + 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 action_list_t; +typedef std::list< ModelAction *, SnapshotAlloc > action_list_t; #endif /* __ACTION_H__ */