ck_array: Add ck_array_initialized functionality.

The function returns true if the target is initialized, otherwise,
it returns false.

include/ck_array.h

@@ -32,6 +32,7 @@
 #include <ck_malloc.h>
 #include <ck_pr.h>
 #include <stdbool.h>
+#include <stddef.h>
 
 struct _ck_array {
 	unsigned int n_committed;
@@ -81,6 +82,13 @@ ck_array_buffer(struct ck_array *array, unsigned int *length)
 	return a->values;
 }
 
+CK_CC_INLINE static bool
+ck_array_initialized(struct ck_array *array)
+{
+
+	return ck_pr_load_ptr(&array->active) != NULL;
+}
+
 #define CK_ARRAY_FOREACH(a, i, b)		   	\
 	(i)->snapshot = ck_pr_load_ptr(&(a)->active);	\
 	ck_pr_fence_load();				\

regressions/ck_array/validate/serial.c

@@ -138,8 +138,14 @@ main(void)
 	if (i != ITERATION - 1 || ck_array_length(&array) != ITERATION - 1)
 		ck_error("Incorrect item count in iteration after unique put\n");
 
+	if (ck_array_initialized(&array) == false)
+		ck_error("Error, expected array to be initialized.\n");
+
 	ck_array_deinit(&array, false);
 
+	if (ck_array_initialized(&array) == true)
+		ck_error("Error, expected array to be uninitialized.\n");
+
 	return 0;
 }
 

src/ck_array.c

@@ -238,6 +238,7 @@ ck_array_deinit(struct ck_array *array, bool defer)
 		    sizeof(struct _ck_array) + sizeof(void *) * array->transaction->length, defer);
 	}
 
+	array->transaction = array->active = NULL;
 	return;
 }