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#!/usr/bin/python3
# SPDX-License-Identifier: GPL-2.0-or-later
import os
from pathlib import Path
from shutil import copyfile
from subprocess import check_call
import sys
import tempfile
def get_formats(backend):
formats = [
"c",
"h",
]
if backend == "dtrace":
formats += [
"d",
"log-stap",
"simpletrace-stap",
"stap",
]
if backend == "ust":
formats += [
"ust-events-c",
"ust-events-h",
]
return formats
def test_tracetool_one(tracetool, backend, fmt, src_dir, build_dir):
rel_filename = backend + "." + fmt
actual_file = Path(build_dir, rel_filename)
expect_file = Path(src_dir, rel_filename)
args = [tracetool, f"--format={fmt}", f"--backends={backend}", "--group=testsuite"]
if fmt.find("stap") != -1:
args += ["--binary=qemu", "--probe-prefix=qemu"]
# Use relative files for both, as these filenames end
# up in '#line' statements in the output
args += ["trace-events", rel_filename]
try:
check_call(args, cwd=build_dir)
actual = actual_file.read_text()
finally:
actual_file.unlink()
if os.getenv("QEMU_TEST_REGENERATE", False):
print(f"# regenerate {expect_file}")
expect_file.write_text(actual)
expect = expect_file.read_text()
assert expect == actual
def test_tracetool(tracetool, backend, source_dir, build_dir):
fail = False
scenarios = len(get_formats(backend))
print(f"1..{scenarios}")
src_events = Path(source_dir, "trace-events")
build_events = Path(build_dir, "trace-events")
try:
# We need a stable relative filename under build dir
# for the '#line' statements, so copy over the input
copyfile(src_events, build_events)
num = 1
for fmt in get_formats(backend):
status = "not ok"
hint = ""
try:
test_tracetool_one(tracetool, backend, fmt, source_dir, build_dir)
status = "ok"
except Exception as e:
print(f"# {e}")
fail = True
hint = (
" (set QEMU_TEST_REGENERATE=1 to recreate reference "
+ "output if tracetool generator was intentionally changed)"
)
finally:
print(f"{status} {num} - {backend}.{fmt}{hint}")
finally:
build_events.unlink()
return fail
if __name__ == "__main__":
if len(sys.argv) != 5:
argv0 = sys.argv[0]
print("syntax: {argv0} TRACE-TOOL BACKEND SRC-DIR BUILD-DIR", file=sys.stderr)
sys.exit(1)
with tempfile.TemporaryDirectory(prefix=sys.argv[4]) as tmpdir:
fail = test_tracetool(sys.argv[1], sys.argv[2], sys.argv[3], tmpdir)
if fail:
sys.exit(1)
sys.exit(0)
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