1 files changed, 215 insertions, 0 deletions
diff --git a/tests/bionic_allocator_test.cpp b/tests/bionic_allocator_test.cpp
new file mode 100644
index 000000000..d0ca8ec5f
--- /dev/null
+++ b/tests/bionic_allocator_test.cpp
@@ -0,0 +1,215 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include <gtest/gtest.h>
+
+#include "private/bionic_allocator.h"
+
+#include <unistd.h>
+
+namespace {
+
+/*
+ * this one has size below allocator cap which is 2*sizeof(void*)
+ */
+struct test_struct_small {
+  char dummy_str[5];
+};
+
+struct test_struct_large {
+  char dummy_str[1009];
+};
+
+struct test_struct_huge {
+  char dummy_str[73939];
+};
+
+struct test_struct_512 {
+  char dummy_str[503];
+};
+
+};
+
+static size_t kPageSize = sysconf(_SC_PAGE_SIZE);
+
+TEST(bionic_allocator, test_alloc_0) {
+  BionicAllocator allocator;
+  void* ptr = allocator.alloc(0);
+  ASSERT_TRUE(ptr != nullptr);
+  allocator.free(ptr);
+}
+
+TEST(bionic_allocator, test_free_nullptr) {
+  BionicAllocator allocator;
+  allocator.free(nullptr);
+}
+
+TEST(bionic_allocator, test_realloc) {
+  BionicAllocator allocator;
+  uint32_t* array = reinterpret_cast<uint32_t*>(allocator.alloc(512));
+  const size_t array_size = 512 / sizeof(uint32_t);
+
+  uint32_t model[1000];
+
+  model[0] = 1;
+  model[1] = 1;
+
+  for (size_t i = 2; i < 1000; ++i) {
+    model[i] = model[i - 1] + model[i - 2];
+  }
+
+  memcpy(array, model, array_size);
+
+  uint32_t* reallocated_ptr = reinterpret_cast<uint32_t*>(allocator.realloc(array, 1024));
+
+  ASSERT_TRUE(reallocated_ptr != nullptr);
+  ASSERT_TRUE(reallocated_ptr != array);
+
+  ASSERT_TRUE(memcmp(reallocated_ptr, model, array_size) == 0);
+
+  array = reallocated_ptr;
+
+  memcpy(array, model, 2*array_size);
+
+  reallocated_ptr = reinterpret_cast<uint32_t*>(allocator.realloc(array, 62));
+
+  ASSERT_TRUE(reallocated_ptr == array);
+
+  reallocated_ptr = reinterpret_cast<uint32_t*>(allocator.realloc(array, 4000));
+
+  ASSERT_TRUE(reallocated_ptr != nullptr);
+  ASSERT_TRUE(reallocated_ptr != array);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(reallocated_ptr) % 16);
+
+  ASSERT_TRUE(memcmp(reallocated_ptr, model, array_size * 2) == 0);
+
+  array = reallocated_ptr;
+
+  memcpy(array, model, 4000);
+
+  reallocated_ptr = reinterpret_cast<uint32_t*>(allocator.realloc(array, 64000));
+
+  ASSERT_TRUE(reallocated_ptr != nullptr);
+  ASSERT_TRUE(reallocated_ptr != array);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(reallocated_ptr) % 16);
+
+  ASSERT_TRUE(memcmp(reallocated_ptr, model, 4000) == 0);
+
+  ASSERT_EQ(nullptr, allocator.realloc(reallocated_ptr, 0));
+}
+
+TEST(bionic_allocator, test_small_smoke) {
+  BionicAllocator allocator;
+
+  uint8_t zeros[16];
+  memset(zeros, 0, sizeof(zeros));
+
+  test_struct_small* ptr1 =
+      reinterpret_cast<test_struct_small*>(allocator.alloc(sizeof(test_struct_small)));
+  test_struct_small* ptr2 =
+      reinterpret_cast<test_struct_small*>(allocator.alloc(sizeof(test_struct_small)));
+
+  ASSERT_TRUE(ptr1 != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr1) % 16);
+  ASSERT_TRUE(ptr2 != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr2) % 16);
+
+  ASSERT_EQ(reinterpret_cast<uintptr_t>(ptr1)+16, reinterpret_cast<uintptr_t>(ptr2));
+  ASSERT_TRUE(memcmp(ptr1, zeros, 16) == 0);
+
+  allocator.free(ptr1);
+  allocator.free(ptr2);
+}
+
+TEST(bionic_allocator, test_huge_smoke) {
+  BionicAllocator allocator;
+
+  // this should trigger proxy-to-mmap
+  test_struct_huge* ptr1 =
+      reinterpret_cast<test_struct_huge*>(allocator.alloc(sizeof(test_struct_huge)));
+  test_struct_huge* ptr2 =
+      reinterpret_cast<test_struct_huge*>(allocator.alloc(sizeof(test_struct_huge)));
+
+  ASSERT_TRUE(ptr1 != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr1) % 16);
+  ASSERT_TRUE(ptr2 != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr2) % 16);
+
+  ASSERT_TRUE(
+      reinterpret_cast<uintptr_t>(ptr1)/kPageSize != reinterpret_cast<uintptr_t>(ptr2)/kPageSize);
+  allocator.free(ptr2);
+  allocator.free(ptr1);
+}
+
+TEST(bionic_allocator, test_large) {
+  BionicAllocator allocator;
+
+  test_struct_large* ptr1 =
+      reinterpret_cast<test_struct_large*>(allocator.alloc(sizeof(test_struct_large)));
+  test_struct_large* ptr2 =
+      reinterpret_cast<test_struct_large*>(allocator.alloc(1024));
+
+  ASSERT_TRUE(ptr1 != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr1) % 16);
+  ASSERT_TRUE(ptr2 != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr2) % 16);
+
+  ASSERT_EQ(reinterpret_cast<uintptr_t>(ptr1) + 1024, reinterpret_cast<uintptr_t>(ptr2));
+
+  // let's allocate until we reach the next page.
+  size_t n = kPageSize / sizeof(test_struct_large) + 1 - 2;
+  test_struct_large* objects[n];
+
+  for (size_t i = 0; i < n; ++i) {
+    test_struct_large* obj_ptr =
+        reinterpret_cast<test_struct_large*>(allocator.alloc(sizeof(test_struct_large)));
+    ASSERT_TRUE(obj_ptr != nullptr);
+    objects[i] = obj_ptr;
+  }
+
+  test_struct_large* ptr_to_free =
+      reinterpret_cast<test_struct_large*>(allocator.alloc(sizeof(test_struct_large)));
+
+  ASSERT_TRUE(ptr_to_free != nullptr);
+  ASSERT_EQ(0U, reinterpret_cast<uintptr_t>(ptr_to_free) % 16);
+
+  allocator.free(ptr1);
+
+  for (size_t i=0; i<n; ++i) {
+    allocator.free(objects[i]);
+  }
+
+  allocator.free(ptr2);
+  allocator.free(ptr_to_free);
+}
+
+