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//===-- sanitizer_allocator_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 "sanitizer_common/sanitizer_common.h"
#include "gtest/gtest.h"
#include <stdlib.h>
namespace __tsan {
TEST(Allocator, Basic) {
char *p = (char*)InternalAlloc(10);
EXPECT_NE(p, (char*)0);
char *p2 = (char*)InternalAlloc(20);
EXPECT_NE(p2, (char*)0);
EXPECT_NE(p2, p);
for (int i = 0; i < 10; i++) {
p[i] = 42;
EXPECT_EQ(p, InternalAllocBlock(p + i));
}
for (int i = 0; i < 20; i++) {
((char*)p2)[i] = 42;
EXPECT_EQ(p2, InternalAllocBlock(p2 + i));
}
InternalFree(p);
InternalFree(p2);
}
TEST(Allocator, Stress) {
const int kCount = 1000;
char *ptrs[kCount];
unsigned rnd = 42;
for (int i = 0; i < kCount; i++) {
uptr sz = rand_r(&rnd) % 1000;
char *p = (char*)InternalAlloc(sz);
EXPECT_NE(p, (char*)0);
for (uptr j = 0; j < sz; j++) {
p[j] = 42;
EXPECT_EQ(p, InternalAllocBlock(p + j));
}
ptrs[i] = p;
}
for (int i = 0; i < kCount; i++) {
InternalFree(ptrs[i]);
}
}
} // namespace __tsan
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