1 files changed, 95 insertions, 0 deletions
diff --git a/rtemsspec/gcdaproducer.py b/rtemsspec/gcdaproducer.py
new file mode 100644
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+++ b/rtemsspec/gcdaproducer.py
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: BSD-2-Clause
+""" This module provides a build step to produce gcda files. """
+
+# Copyright (C) 2022 embedded brains GmbH & Co. KG
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+import base64
+import glob
+import json
+import logging
+import os
+import shutil
+from subprocess import run as subprocess_run
+
+from rtemsspec.directorystate import DirectoryState
+from rtemsspec.packagebuild import BuildItem
+
+
+class GCDAProducer(BuildItem):
+    """ Runs the gcov-tool to produce gcda files from a test log. """
+
+    def run(self):
+        build = self.input("build")
+        assert isinstance(build, DirectoryState)
+
+        destination = self.output("destination")
+        assert isinstance(destination, DirectoryState)
+
+        logging.info("%s: copy *.gcno files from '%s' to '%s'", self.uid,
+                     build.directory, destination.directory)
+        for file in build.files():
+            assert not file.endswith(".gcda")
+            if file.endswith(".gcno"):
+                file_dest = file.replace(build.directory,
+                                         destination.directory)
+                os.makedirs(os.path.dirname(file_dest), exist_ok=True)
+                shutil.copy2(file, file_dest)
+
+        gcda_pattern = f"{build.directory}/**/*.gcda"
+        for file in glob.glob(gcda_pattern, recursive=True):
+            logging.warning(
+                "%s: remove unexpected *.gcda file in build directory: '%s'",
+                self.uid, file)
+            os.remove(file)
+
+        log = self.input("log")
+        assert isinstance(log, DirectoryState)
+
+        gcov_tool = self["gcov-tool"]
+        cwd = self["working-directory"]
+
+        with open(log.file, "r", encoding="utf-8") as src:
+            data = json.load(src)
+
+        for report in data["reports"]:
+            if "line-end-of-test" not in report["info"]:
+                # Do not use coverage data of failed tests
+                continue
+            begin = report.get("line-gcov-info-base64-begin", -1)
+            end = report.get("line-gcov-info-base64-end", -1)
+            if begin >= 0 and end >= 0:
+                logging.debug("%s: process: %s", self.uid,
+                              report["executable"])
+                gcov_info = base64.b64decode("".join(report["output"][begin +
+                                                                      1:end]))
+                subprocess_run([gcov_tool, "merge-stream"],
+                               check=True,
+                               cwd=cwd,
+                               input=gcov_info)
+
+        logging.info("%s: move *.gcda files from '%s' to '%s'", self.uid,
+                     build.directory, destination.directory)
+        for file in glob.glob(gcda_pattern, recursive=True):
+            file_dest = file.replace(build.directory, destination.directory)
+            os.replace(file, file_dest)