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//===-- tsan_shadow_test.cc -----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
//===----------------------------------------------------------------------===//
#include "tsan_platform.h"
#include "tsan_rtl.h"
#include "gtest/gtest.h"
namespace __tsan {
TEST(Shadow, FastState) {
Shadow s(FastState(11, 22));
EXPECT_EQ(s.tid(), (u64)11);
EXPECT_EQ(s.epoch(), (u64)22);
EXPECT_EQ(s.GetIgnoreBit(), false);
EXPECT_EQ(s.GetFreedAndReset(), false);
EXPECT_EQ(s.GetHistorySize(), 0);
EXPECT_EQ(s.addr0(), (u64)0);
EXPECT_EQ(s.size(), (u64)1);
EXPECT_EQ(s.IsWrite(), true);
s.IncrementEpoch();
EXPECT_EQ(s.epoch(), (u64)23);
s.IncrementEpoch();
EXPECT_EQ(s.epoch(), (u64)24);
s.SetIgnoreBit();
EXPECT_EQ(s.GetIgnoreBit(), true);
s.ClearIgnoreBit();
EXPECT_EQ(s.GetIgnoreBit(), false);
for (int i = 0; i < 8; i++) {
s.SetHistorySize(i);
EXPECT_EQ(s.GetHistorySize(), i);
}
s.SetHistorySize(2);
s.ClearHistorySize();
EXPECT_EQ(s.GetHistorySize(), 0);
}
TEST(Shadow, Mapping) {
static int global;
int stack;
void *heap = malloc(0);
free(heap);
CHECK(IsAppMem((uptr)&global));
CHECK(IsAppMem((uptr)&stack));
CHECK(IsAppMem((uptr)heap));
CHECK(IsShadowMem(MemToShadow((uptr)&global)));
CHECK(IsShadowMem(MemToShadow((uptr)&stack)));
CHECK(IsShadowMem(MemToShadow((uptr)heap)));
}
TEST(Shadow, Celling) {
u64 aligned_data[4];
char *data = (char*)aligned_data;
CHECK_EQ((uptr)data % kShadowSize, 0);
uptr s0 = MemToShadow((uptr)&data[0]);
CHECK_EQ(s0 % kShadowSize, 0);
for (unsigned i = 1; i < kShadowCell; i++)
CHECK_EQ(s0, MemToShadow((uptr)&data[i]));
for (unsigned i = kShadowCell; i < 2*kShadowCell; i++)
CHECK_EQ(s0 + kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
for (unsigned i = 2*kShadowCell; i < 3*kShadowCell; i++)
CHECK_EQ(s0 + 2*kShadowSize*kShadowCnt, MemToShadow((uptr)&data[i]));
}
} // namespace __tsan
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