base/profiler/stack_base_address_posix_unittest.cc

   1 // Copyright 2022 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/profiler/stack_base_address_posix.h"
   6
   7 #include "base/numerics/clamped_math.h"
   8 #include "base/process/process_handle.h"
   9 #include "build/build_config.h"
  10 #include "build/chromeos_buildflags.h"
  11 #include "testing/gmock/include/gmock/gmock.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13
  14 namespace base {
  15
  16 using ::testing::Gt;
  17 using ::testing::Le;
  18 using ::testing::Optional;
  19
  20 // ASAN moves local variables outside of the stack extents.
  21 #if defined(ADDRESS_SANITIZER)
  22 #define MAYBE_CurrentThread DISABLED_CurrentThread
  23 #elif BUILDFLAG(IS_LINUX)
  24 // We don't support getting the stack base address on Linux.
  25 // https://crbug.com/1394278
  26 #define MAYBE_CurrentThread DISABLED_CurrentThread
  27 #else
  28 #define MAYBE_CurrentThread CurrentThread
  29 #endif
  30 TEST(GetThreadStackBaseAddressTest, MAYBE_CurrentThread) {
  31   absl::optional<uintptr_t> base =
  32       GetThreadStackBaseAddress(PlatformThread::CurrentId(), pthread_self());
  33   EXPECT_THAT(base, Optional(Gt(0u)));
  34   uintptr_t stack_addr = reinterpret_cast<uintptr_t>(&base);
  35   // Check that end of stack is within 4MiB of a current stack address.
  36   EXPECT_THAT(base, Optional(Le(ClampAdd(stack_addr, 4 * 1024 * 1024))));
  37 }
  38
  39 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
  40
  41 TEST(GetThreadStackBaseAddressTest, MainThread) {
  42   // GetThreadStackBaseAddress does not use pthread_id for main thread on these
  43   // platforms.
  44   absl::optional<uintptr_t> base =
  45       GetThreadStackBaseAddress(GetCurrentProcId(), pthread_t());
  46   EXPECT_THAT(base, Optional(Gt(0u)));
  47 }
  48
  49 #endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
  50 }  // namespace base