X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=threads.cc;h=6b4e2c740ab50b7b55f624b7bda05a4c9ad72678;hb=ac8e176cd4a8756244c12dbbcaf961d27bfc8a74;hp=39f049541d69184cc012bcd042f2400208863a3a;hpb=9ba28a8ef15225525c30c5303c859f64602820a3;p=c11tester.git

diff --git a/threads.cc b/threads.cc
index 39f04954..6b4e2c74 100644
--- a/threads.cc
+++ b/threads.cc
@@ -2,9 +2,11 @@
  *  @brief Thread functions.
  */
 
-#include "libthreads.h"
+#include <string.h>
+
+#include <threads.h>
 #include "common.h"
-#include "threads.h"
+#include "threads-model.h"
 
 /* global "model" object */
 #include "model.h"
@@ -12,13 +14,13 @@
 /** Allocate a stack for a new thread. */
 static void * stack_allocate(size_t size)
 {
-	return malloc(size);
+	return snapshot_malloc(size);
 }
 
 /** Free a stack for a terminated thread. */
 static void stack_free(void *stack)
 {
-	free(stack);
+	snapshot_free(stack);
 }
 
 /** Return the currently executing thread. */
@@ -32,8 +34,6 @@ Thread * thread_current(void)
  * Provides a startup wrapper for each thread, allowing some initial
  * model-checking data to be recorded. This method also gets around makecontext
  * not being 64-bit clean
- * @todo We should make the START event always immediately follow the
- * CREATE event, so we don't get redundant traces...
  */
 void thread_startup()
 {
@@ -105,13 +105,38 @@ int Thread::swap(ucontext_t *ctxt, Thread *t)
 void Thread::complete()
 {
 	if (!is_complete()) {
-		DEBUG("completed thread %d\n", get_id());
+		DEBUG("completed thread %d\n", id_to_int(get_id()));
 		state = THREAD_COMPLETED;
 		if (stack)
 			stack_free(stack);
 	}
 }
 
+/**
+ * @brief Construct a new model-checker Thread
+ *
+ * A model-checker Thread is used for accounting purposes only. It will never
+ * have its own stack, and it should never be inserted into the Scheduler.
+ *
+ * @param tid The thread ID to assign
+ */
+Thread::Thread(thread_id_t tid) :
+	parent(NULL),
+	creation(NULL),
+	pending(NULL),
+	start_routine(NULL),
+	arg(NULL),
+	stack(NULL),
+	user_thread(NULL),
+	id(tid),
+	state(THREAD_READY), /* Thread is always ready? */
+	wait_list(),
+	last_action_val(0),
+	model_thread(true)
+{
+	memset(&context, 0, sizeof(context));
+}
+
 /**
  * Construct a new thread.
  * @param t The thread identifier of the newly created thread.
@@ -119,20 +144,22 @@ void Thread::complete()
  * @param a The parameter to pass to this function.
  */
 Thread::Thread(thrd_t *t, void (*func)(void *), void *a) :
+	creation(NULL),
 	pending(NULL),
 	start_routine(func),
 	arg(a),
 	user_thread(t),
 	state(THREAD_CREATED),
 	wait_list(),
-	last_action_val(VALUE_NONE)
+	last_action_val(VALUE_NONE),
+	model_thread(false)
 {
 	int ret;
 
 	/* Initialize state */
 	ret = create_context();
 	if (ret)
-		printf("Error in create_context\n");
+		model_print("Error in create_context\n");
 
 	id = model->get_next_id();
 	*user_thread = id;
@@ -147,7 +174,7 @@ Thread::~Thread()
 }
 
 /** @return The thread_id_t corresponding to this Thread object. */
-thread_id_t Thread::get_id()
+thread_id_t Thread::get_id() const
 {
 	return id;
 }