ck_epoch: Differentiate read/write epoch endings.

ck_epoch_end is deprecated. Please use ck_epoch_read_end
and ck_epoch_write_end instead.

include/ck_epoch.h

@@ -103,7 +103,16 @@ ck_epoch_read_begin(ck_epoch_record_t *record)
 }
 
 CK_CC_INLINE static void
-ck_epoch_end(ck_epoch_record_t *record)
+ck_epoch_read_end(ck_epoch_record_t *record)
+{
+
+	ck_pr_fence_store();
+	ck_pr_store_uint(&record->active, record->active - 1);
+	return;
+}
+
+CK_CC_INLINE static void
+ck_epoch_write_end(ck_epoch_record_t *record)
 {
 
 	ck_pr_fence_store();

regressions/ck_epoch/validate/ck_stack.c

@@ -108,11 +108,11 @@ thread(void *unused CK_CC_UNUSED)
 	for (i = 0; i < PAIRS; i++) {
 		ck_epoch_write_begin(&record);
 		ck_stack_push_upmc(&stack, &entry[i]->stack_entry);
-		ck_epoch_end(&record);
+		ck_epoch_write_end(&record);
 
 		ck_epoch_write_begin(&record);
 		s = ck_stack_pop_upmc(&stack);
-		ck_epoch_end(&record);
+		ck_epoch_write_end(&record);
 
 		e = stack_container(s);
 		ck_epoch_free(&record, &e->epoch_entry, destructor);

regressions/ck_epoch/validate/ck_stack_read.c

@@ -117,7 +117,7 @@ read_thread(void *unused CK_CC_UNUSED)
 			j++;
 			n++;
 		}
-		ck_epoch_end(&record);
+		ck_epoch_read_end(&record);
 
 		if (j != 0 && ck_pr_load_uint(&readers) == 0)
 			ck_pr_store_uint(&readers, 1);
@@ -170,7 +170,7 @@ thread(void *unused CK_CC_UNUSED)
 		for (i = 0; i < PAIRS; i++) {
 			ck_epoch_write_begin(&record);
 			ck_stack_push_upmc(&stack, &entry[i]->stack_entry);
-			ck_epoch_end(&record);
+			ck_epoch_write_end(&record);
 		}
 
 		while (ck_pr_load_uint(&readers) == 0)
@@ -179,7 +179,7 @@ thread(void *unused CK_CC_UNUSED)
 		for (i = 0; i < PAIRS; i++) {
 			ck_epoch_write_begin(&record);
 			s = ck_stack_pop_upmc(&stack);
-			ck_epoch_end(&record);
+			ck_epoch_write_end(&record);
 
 			e = stack_container(s);
 			ck_epoch_free(&record, &e->epoch_entry, destructor);