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//===-- tsan_stack_test.cc ------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//
#include "tsan_sync.h"
#include "tsan_rtl.h"
#include "gtest/gtest.h"
#include <string.h>
namespace __tsan {
static void TestStackTrace(StackTrace *trace) {
ThreadState thr(0, 0, 0, 0, 0, 0, 0, 0, 0);
uptr stack[128];
thr.shadow_stack = &stack[0];
thr.shadow_stack_pos = &stack[0];
thr.shadow_stack_end = &stack[128];
trace->ObtainCurrent(&thr, 0);
EXPECT_EQ(trace->Size(), (uptr)0);
trace->ObtainCurrent(&thr, 42);
EXPECT_EQ(trace->Size(), (uptr)1);
EXPECT_EQ(trace->Get(0), (uptr)42);
*thr.shadow_stack_pos++ = 100;
*thr.shadow_stack_pos++ = 101;
trace->ObtainCurrent(&thr, 0);
EXPECT_EQ(trace->Size(), (uptr)2);
EXPECT_EQ(trace->Get(0), (uptr)100);
EXPECT_EQ(trace->Get(1), (uptr)101);
trace->ObtainCurrent(&thr, 42);
EXPECT_EQ(trace->Size(), (uptr)3);
EXPECT_EQ(trace->Get(0), (uptr)100);
EXPECT_EQ(trace->Get(1), (uptr)101);
EXPECT_EQ(trace->Get(2), (uptr)42);
}
TEST(StackTrace, Basic) {
StackTrace trace;
TestStackTrace(&trace);
}
TEST(StackTrace, StaticBasic) {
uptr buf[10];
StackTrace trace1(buf, 10);
TestStackTrace(&trace1);
StackTrace trace2(buf, 3);
TestStackTrace(&trace2);
}
TEST(StackTrace, StaticTrim) {
uptr buf[2];
StackTrace trace(buf, 2);
ThreadState thr(0, 0, 0, 0, 0, 0, 0, 0, 0);
uptr stack[128];
thr.shadow_stack = &stack[0];
thr.shadow_stack_pos = &stack[0];
thr.shadow_stack_end = &stack[128];
*thr.shadow_stack_pos++ = 100;
*thr.shadow_stack_pos++ = 101;
*thr.shadow_stack_pos++ = 102;
trace.ObtainCurrent(&thr, 0);
EXPECT_EQ(trace.Size(), (uptr)2);
EXPECT_EQ(trace.Get(0), (uptr)101);
EXPECT_EQ(trace.Get(1), (uptr)102);
trace.ObtainCurrent(&thr, 42);
EXPECT_EQ(trace.Size(), (uptr)2);
EXPECT_EQ(trace.Get(0), (uptr)102);
EXPECT_EQ(trace.Get(1), (uptr)42);
}
} // namespace __tsan
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