X-Git-Url: http://plrg.eecs.uci.edu/git/?p=c11tester.git;a=blobdiff_plain;f=threads-model.h;h=02f20b030778420d46a247e7a3980f34bf20396b;hp=d4d2da29e82a7fc1c58a2a61db7ee61aac7206a5;hb=f4001ec19bed50b1d1fddace35e7e6375ac08075;hpb=82df62c2b0805848b87bb71df5b66a4a66f8e25d

diff --git a/threads-model.h b/threads-model.h
index d4d2da29..02f20b03 100644
--- a/threads-model.h
+++ b/threads-model.h
@@ -5,13 +5,14 @@
 #ifndef __THREADS_MODEL_H__
 #define __THREADS_MODEL_H__
 
-#include <ucontext.h>
 #include <stdint.h>
-#include <vector>
 
 #include "mymemory.h"
-#include <threads.h>
+#include "threads.h"
 #include "modeltypes.h"
+#include "stl-model.h"
+#include "context.h"
+#include "classlist.h"
 
 struct thread_params {
 	thrd_start_t func;
@@ -35,13 +36,14 @@ typedef enum thread_state {
 	THREAD_COMPLETED
 } thread_state;
 
-class ModelAction;
 
 /** @brief A Thread is created for each user-space thread */
 class Thread {
 public:
 	Thread(thread_id_t tid);
-	Thread(thrd_t *t, void (*func)(void *), void *a);
+	Thread(thread_id_t tid, thrd_t *t, void (*func)(void *), void *a, Thread *parent);
+	Thread(thread_id_t tid, thrd_t *t, void *(*func)(void *), void *a, Thread *parent);
+
 	~Thread();
 	void complete();
 
@@ -72,40 +74,27 @@ public:
 	 */
 	uint64_t get_return_value() const { return last_action_val; }
 
+	/** @set and get the return value from pthread functions */
+	void set_pthread_return(void *ret) { pthread_return = ret; }
+	void * get_pthread_return() { return pthread_return; }
+
 	/** @return True if this thread is finished executing */
 	bool is_complete() const { return state == THREAD_COMPLETED; }
 
 	/** @return True if this thread is blocked */
 	bool is_blocked() const { return state == THREAD_BLOCKED; }
 
-	/** @return True if no threads are waiting on this Thread */
-	bool wait_list_empty() const { return wait_list.empty(); }
-
-	/**
-	 * Add a ModelAction to the waiting list for this thread.
-	 * @param t The ModelAction to add. Must be a JOIN.
-	 */
-	void push_wait_list(ModelAction *act) { wait_list.push_back(act); }
-
-	unsigned int num_wait_list() const {
-		return wait_list.size();
-	}
-
-	ModelAction * get_waiter(unsigned int i) const {
-		return wait_list[i];
-	}
-
+	/** @return The pending (next) ModelAction for this Thread
+	 *  @see Thread::pending */
 	ModelAction * get_pending() const { return pending; }
+
+	/** @brief Set the pending (next) ModelAction for this Thread
+	 *  @param act The pending ModelAction
+	 *  @see Thread::pending */
 	void set_pending(ModelAction *act) { pending = act; }
-	/**
-	 * Remove one ModelAction from the waiting list
-	 * @return The ModelAction that was removed from the waiting list
-	 */
-	ModelAction * pop_wait_list() {
-		ModelAction *ret = wait_list.front();
-		wait_list.pop_back();
-		return ret;
-	}
+
+	Thread * waiting_on() const;
+	bool is_waiting_on(const Thread *t) const;
 
 	bool is_model_thread() const { return model_thread; }
 
@@ -117,13 +106,39 @@ public:
 	 * to allow their allocation/deallocation to follow the same pattern as
 	 * the rest of the backtracked/replayed program.
 	 */
+	void * operator new(size_t size) {
+		return Thread_malloc(size);
+	}
+	void operator delete(void *p, size_t size) {
+		Thread_free(p);
+	}
+	void * operator new[](size_t size) {
+		return Thread_malloc(size);
+	}
+	void operator delete[](void *p, size_t size) {
+		Thread_free(p);
+	}
 private:
 	int create_context();
-	Thread *parent;
+
+	/** @brief The parent Thread which created this Thread */
+	Thread * const parent;
+
+	/** @brief The THREAD_CREATE ModelAction which created this Thread */
 	ModelAction *creation;
 
+	/**
+	 * @brief The next ModelAction to be run by this Thread
+	 *
+	 * This action should be kept updated by the ModelChecker, so that we
+	 * always know what the next ModelAction's memory_order, action type,
+	 * and location are.
+	 */
 	ModelAction *pending;
+
 	void (*start_routine)(void *);
+	void *(*pstart_routine)(void *);
+
 	void *arg;
 	ucontext_t context;
 	void *stack;
@@ -131,13 +146,6 @@ private:
 	thread_id_t id;
 	thread_state state;
 
-	/**
-	 * A list of ModelActions waiting on this Thread. Particularly, this
-	 * list is used for thread joins, where another Thread waits for this
-	 * Thread to complete
-	 */
-	std::vector< ModelAction *, SnapshotAlloc<ModelAction *> > wait_list;
-
 	/**
 	 * The value returned by the last action in this thread
 	 * @see Thread::set_return_value()
@@ -145,11 +153,15 @@ private:
 	 */
 	uint64_t last_action_val;
 
+	/** the value return from pthread functions */
+	void * pthread_return;
+
 	/** @brief Is this Thread a special model-checker thread? */
 	const bool model_thread;
 };
 
 Thread * thread_current();
+void thread_startup();
 
 static inline thread_id_t thrd_to_id(thrd_t t)
 {
@@ -176,4 +188,4 @@ static inline int id_to_int(thread_id_t id)
 	return id;
 }
 
-#endif /* __THREADS_MODEL_H__ */
+#endif	/* __THREADS_MODEL_H__ */