diff options
Diffstat (limited to 'packages/Python/lldbsuite/test/functionalities/tsan/basic')
3 files changed, 161 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/functionalities/tsan/basic/Makefile b/packages/Python/lldbsuite/test/functionalities/tsan/basic/Makefile new file mode 100644 index 000000000000..c930ae563fc1 --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/tsan/basic/Makefile @@ -0,0 +1,6 @@ +LEVEL = ../../../make + +C_SOURCES := main.c +CFLAGS_EXTRAS := -fsanitize=thread -g + +include $(LEVEL)/Makefile.rules diff --git a/packages/Python/lldbsuite/test/functionalities/tsan/basic/TestTsanBasic.py b/packages/Python/lldbsuite/test/functionalities/tsan/basic/TestTsanBasic.py new file mode 100644 index 000000000000..44fa9cedc86c --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/tsan/basic/TestTsanBasic.py @@ -0,0 +1,118 @@ +""" +Tests basic ThreadSanitizer support (detecting a data race). +""" + +import os, time +import lldb +from lldbsuite.test.lldbtest import * +from lldbsuite.test.decorators import * +import lldbsuite.test.lldbutil as lldbutil +import json + +class TsanBasicTestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + @expectedFailureAll(oslist=["linux"], bugnumber="non-core functionality, need to reenable and fix later (DES 2014.11.07)") + @skipIfFreeBSD # llvm.org/pr21136 runtimes not yet available by default + @skipIfRemote + @skipUnlessCompilerRt + @skipUnlessThreadSanitizer + def test (self): + self.build () + self.tsan_tests () + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + self.line_malloc = line_number('main.c', '// malloc line') + self.line_thread1 = line_number('main.c', '// thread1 line') + self.line_thread2 = line_number('main.c', '// thread2 line') + + def tsan_tests (self): + exe = os.path.join (os.getcwd(), "a.out") + self.expect("file " + exe, patterns = [ "Current executable set to .*a.out" ]) + + self.runCmd("run") + + stop_reason = self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason() + if stop_reason == lldb.eStopReasonExec: + # On OS X 10.10 and older, we need to re-exec to enable interceptors. + self.runCmd("continue") + + # the stop reason of the thread should be breakpoint. + self.expect("thread list", "A data race should be detected", + substrs = ['stopped', 'stop reason = Data race detected']) + + self.assertEqual(self.dbg.GetSelectedTarget().process.GetSelectedThread().GetStopReason(), lldb.eStopReasonInstrumentation) + + # test that the TSan dylib is present + self.expect("image lookup -n __tsan_get_current_report", "__tsan_get_current_report should be present", + substrs = ['1 match found']) + + # We should be stopped in __tsan_on_report + process = self.dbg.GetSelectedTarget().process + thread = process.GetSelectedThread() + frame = thread.GetSelectedFrame() + self.assertTrue("__tsan_on_report" in frame.GetFunctionName()) + + # The stopped thread backtrace should contain either line1 or line2 from main.c. + found = False + for i in range(0, thread.GetNumFrames()): + frame = thread.GetFrameAtIndex(i) + if frame.GetLineEntry().GetFileSpec().GetFilename() == "main.c": + if frame.GetLineEntry().GetLine() == self.line_thread1: + found = True + if frame.GetLineEntry().GetLine() == self.line_thread2: + found = True + self.assertTrue(found) + + self.expect("thread info -s", "The extended stop info should contain the TSan provided fields", + substrs = ["instrumentation_class", "description", "mops"]) + + output_lines = self.res.GetOutput().split('\n') + json_line = '\n'.join(output_lines[2:]) + data = json.loads(json_line) + self.assertEqual(data["instrumentation_class"], "ThreadSanitizer") + self.assertEqual(data["issue_type"], "data-race") + self.assertEqual(len(data["mops"]), 2) + + backtraces = thread.GetStopReasonExtendedBacktraces(lldb.eInstrumentationRuntimeTypeAddressSanitizer) + self.assertEqual(backtraces.GetSize(), 0) + + backtraces = thread.GetStopReasonExtendedBacktraces(lldb.eInstrumentationRuntimeTypeThreadSanitizer) + self.assertTrue(backtraces.GetSize() >= 2) + + # First backtrace is a memory operation + thread = backtraces.GetThreadAtIndex(0) + found = False + for i in range(0, thread.GetNumFrames()): + frame = thread.GetFrameAtIndex(i) + if frame.GetLineEntry().GetFileSpec().GetFilename() == "main.c": + if frame.GetLineEntry().GetLine() == self.line_thread1: + found = True + if frame.GetLineEntry().GetLine() == self.line_thread2: + found = True + self.assertTrue(found) + + # Second backtrace is a memory operation + thread = backtraces.GetThreadAtIndex(1) + found = False + for i in range(0, thread.GetNumFrames()): + frame = thread.GetFrameAtIndex(i) + if frame.GetLineEntry().GetFileSpec().GetFilename() == "main.c": + if frame.GetLineEntry().GetLine() == self.line_thread1: + found = True + if frame.GetLineEntry().GetLine() == self.line_thread2: + found = True + self.assertTrue(found) + + self.runCmd("continue") + + # the stop reason of the thread should be a SIGABRT. + self.expect("thread list", "We should be stopped due a SIGABRT", + substrs = ['stopped', 'stop reason = signal SIGABRT']) + + # test that we're in pthread_kill now (TSan abort the process) + self.expect("thread list", "We should be stopped in pthread_kill", + substrs = ['pthread_kill']) diff --git a/packages/Python/lldbsuite/test/functionalities/tsan/basic/main.c b/packages/Python/lldbsuite/test/functionalities/tsan/basic/main.c new file mode 100644 index 000000000000..c082b01a57c7 --- /dev/null +++ b/packages/Python/lldbsuite/test/functionalities/tsan/basic/main.c @@ -0,0 +1,37 @@ +//===-- main.c --------------------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> + +char *pointer; + +void *f1(void *p) { + pointer[0] = 'x'; // thread1 line + return NULL; +} + +void *f2(void *p) { + pointer[0] = 'y'; // thread2 line + return NULL; +} + +int main (int argc, char const *argv[]) +{ + pointer = (char *)malloc(10); // malloc line + + pthread_t t1, t2; + pthread_create(&t1, NULL, f1, NULL); + pthread_create(&t2, NULL, f2, NULL); + + pthread_join(t1, NULL); + pthread_join(t2, NULL); + + return 0; +} |