lib: add pre condition asserts to check current thread has no error

[babeltrace.git] / src / lib / assert-pre.h

diff --git a/src/lib/assert-pre.h b/src/lib/assert-pre.h
index 03d86de368fd8d5d4f61a15eba644525029fee5f..138977558f95daf67d542e679ba5a005d0dddc3e 100644 (file)
--- a/src/lib/assert-pre.h
+++ b/src/lib/assert-pre.h
@@ -116,6 +116,20 @@
                "Index is out of bounds: index=%" PRIu64 ", "           \
                "count=%" PRIu64, (uint64_t) (_index), (uint64_t) (_length))
 
+/*
+ * Asserts that the current thread has no error set.
+ */
+#define BT_ASSERT_PRE_NO_ERROR() \
+       do {                                                                    \
+               const struct bt_error *err = bt_current_thread_take_error();    \
+               if (err) {                                                      \
+                       bt_current_thread_move_error(err);                      \
+               }                                                               \
+               BT_ASSERT_PRE(!err,                                             \
+                       "API function called while current thread has an "      \
+                       "error: function=%s", __func__);                        \
+       } while (0)
+
 #ifdef BT_DEV_MODE
 /* Developer mode version of BT_ASSERT_PRE_MSG(). */
 # define BT_ASSERT_PRE_DEV_MSG(_fmt, ...)                              \
@@ -146,6 +160,10 @@
 # define BT_ASSERT_PRE_DEV_VALID_INDEX(_index, _length)                        \
        BT_ASSERT_PRE_VALID_INDEX((_index), (_length))
 
+/* Developer mode version of BT_ASSERT_PRE_NO_ERROR(). */
+# define BT_ASSERT_PRE_DEV_NO_ERROR() \
+       BT_ASSERT_PRE_NO_ERROR()
+
 /*
  * Marks a function as being only used within a BT_ASSERT_PRE_DEV()
  * context.
@@ -160,6 +178,7 @@
        ((void) sizeof((void) (_obj), (void) (_obj_name), 0))
 # define BT_ASSERT_PRE_DEV_VALID_INDEX(_index, _length)                        \
        ((void) sizeof((void) (_index), (void) (_length), 0))
+# define BT_ASSERT_PRE_DEV_NO_ERROR()
 # define BT_ASSERT_PRE_DEV_FUNC                __attribute__((unused))
 #endif /* BT_DEV_MODE */