Renumber ThreadSanitizer-provided thread IDs to match LLDB thread numbers.

llvm-svn: 267133

3 files changed, 131 insertions, 0 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/Makefile b/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/Makefile
new file mode 100644
index 00000000000..c930ae563fc
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/Makefile
@@ -0,0 +1,6 @@
+LEVEL = ../../../make
+
+C_SOURCES := main.c
+CFLAGS_EXTRAS := -fsanitize=thread -g
+
+include $(LEVEL)/Makefile.rules
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/TestTsanThreadNumbers.py b/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/TestTsanThreadNumbers.py
new file mode 100644
index 00000000000..18ebaa08f8a
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/TestTsanThreadNumbers.py
@@ -0,0 +1,67 @@
+"""
+Tests that TSan and LLDB have correct thread numbers.
+"""
+
+import os, time
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test.decorators import *
+import lldbsuite.test.lldbutil as lldbutil
+import json
+
+class TsanThreadNumbersTestCase(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
+    def test (self):
+        self.build ()
+        self.tsan_tests ()
+
+    def setUp(self):
+        # Call super's setUp().
+        TestBase.setUp(self)
+
+    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)
+
+        report_thread_id = self.dbg.GetSelectedTarget().process.GetSelectedThread().GetIndexID()
+
+        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)
+
+        self.assertEqual(data["mops"][0]["thread_id"], report_thread_id)
+
+        other_thread_id = data["mops"][1]["thread_id"]
+        self.assertTrue(other_thread_id != report_thread_id)
+        other_thread = self.dbg.GetSelectedTarget().process.GetThreadByIndexID(other_thread_id)
+        self.assertTrue(other_thread.IsValid())
+
+        self.runCmd("thread select %d" % other_thread_id)
+
+        self.expect("thread backtrace", "The other thread should be stopped in f1 or f2",
+            substrs = ["a.out", "main.c"])
diff --git a/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/main.c b/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/main.c
new file mode 100644
index 00000000000..04ebb723c3b
--- /dev/null
+++ b/lldb/packages/Python/lldbsuite/test/functionalities/tsan/thread_numbers/main.c
@@ -0,0 +1,58 @@
+//===-- 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>
+#include <unistd.h>
+
+char *pointer;
+
+void *nothing(void *p) {
+    return NULL;
+}
+
+void *f1(void *p) {
+    pointer[0] = 'x';
+    sleep(100);
+    return NULL;
+}
+
+void *f2(void *p) {
+    pointer[0] = 'y';
+    sleep(100);
+    return NULL;
+}
+
+int main (int argc, char const *argv[])
+{
+    pointer = (char *)malloc(10);
+
+    for (int i = 0; i < 3; i++) {
+        pthread_t t;
+        pthread_create(&t, NULL, nothing, NULL);
+        pthread_join(t, NULL);
+    }
+
+    pthread_t t1;
+    pthread_create(&t1, NULL, f1, NULL);
+
+    for (int i = 0; i < 3; i++) {
+        pthread_t t;
+        pthread_create(&t, NULL, nothing, NULL);
+        pthread_join(t, NULL);
+    }
+
+    pthread_t t2;
+    pthread_create(&t2, NULL, f2, NULL);
+
+    pthread_join(t1, NULL);
+    pthread_join(t2, NULL);
+
+    return 0;
+}