1 files changed, 53 insertions, 0 deletions
diff --git a/src/kernel/tests/include/tst_process_state.h b/src/kernel/tests/include/tst_process_state.h
new file mode 100644
index 0000000..c32aa58
--- /dev/null
+++ b/src/kernel/tests/include/tst_process_state.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ * Copyright (C) 2012-2014 Cyril Hrubis chrubis@suse.cz
+ */
+
+ /*
+
+   These functions helps you wait till a process with given pid changes state.
+   This is for example useful when you need to wait in parent until child
+   blocks.
+
+  */
+
+#ifndef TST_PROCESS_STATE__
+#define TST_PROCESS_STATE__
+
+#include <unistd.h>
+
+/*
+ * Waits for process state change.
+ *
+ * The state is one of the following:
+ *
+ * R - process is running
+ * S - process is sleeping
+ * D - process sleeping uninterruptibly
+ * Z - zombie process
+ * T - process is traced
+ */
+#ifdef TST_TEST_H__
+
+#define TST_PROCESS_STATE_WAIT(pid, state, msec_timeout) \
+	tst_process_state_wait(__FILE__, __LINE__, NULL, \
+	                       (pid), (state), (msec_timeout))
+#else
+/*
+ * The same as above but does not use tst_brkm() interface.
+ *
+ * This function is intended to be used from child processes.
+ *
+ * Returns zero on success, non-zero on failure.
+ */
+int tst_process_state_wait2(pid_t pid, const char state);
+
+# define TST_PROCESS_STATE_WAIT(cleanup_fn, pid, state) \
+	 tst_process_state_wait(__FILE__, __LINE__, (cleanup_fn), \
+	                        (pid), (state), 0)
+#endif
+
+int tst_process_state_wait(const char *file, const int lineno,
+                            void (*cleanup_fn)(void), pid_t pid,
+			    const char state, unsigned int msec_timeout);
+
+#endif /* TST_PROCESS_STATE__ */