From 489ef888d942ecd40063b0e074b2901a2c1754bb Mon Sep 17 00:00:00 2001
From: dmauro <dmauro@google.com>
Date: Mon, 25 Oct 2021 13:40:39 -0400
Subject: [PATCH] Googletest export

Remove GoogleTest's SleepMilliseconds function.
It is only used in tests and a portable implementation is available.

PiperOrigin-RevId: 405437102
---
 googletest/include/gtest/internal/gtest-port.h | 16 +---------------
 googletest/src/gtest-port.cc                   |  4 ----
 googletest/test/googletest-port-test.cc        | 12 ++++++++----
 3 files changed, 9 insertions(+), 23 deletions(-)

diff --git a/googletest/include/gtest/internal/gtest-port.h b/googletest/include/gtest/internal/gtest-port.h
index de00483d..63ef13c1 100644
--- a/googletest/include/gtest/internal/gtest-port.h
+++ b/googletest/include/gtest/internal/gtest-port.h
@@ -1163,21 +1163,8 @@ void ClearInjectableArgvs();
 
 // Defines synchronization primitives.
 #if GTEST_IS_THREADSAFE
-# if GTEST_HAS_PTHREAD
-// Sleeps for (roughly) n milliseconds.  This function is only for testing
-// Google Test's own constructs.  Don't use it in user tests, either
-// directly or indirectly.
-inline void SleepMilliseconds(int n) {
-  const timespec time = {
-    0,                  // 0 seconds.
-    n * 1000L * 1000L,  // And n ms.
-  };
-  nanosleep(&time, nullptr);
-}
-
-# elif GTEST_OS_WINDOWS
-GTEST_API_ void SleepMilliseconds(int n);
 
+# if GTEST_OS_WINDOWS
 // Provides leak-safe Windows kernel handle ownership.
 // Used in death tests and in threading support.
 class GTEST_API_ AutoHandle {
@@ -1206,7 +1193,6 @@ class GTEST_API_ AutoHandle {
 
   GTEST_DISALLOW_COPY_AND_ASSIGN_(AutoHandle);
 };
-
 # endif
 
 # if GTEST_HAS_NOTIFICATION_
diff --git a/googletest/src/gtest-port.cc b/googletest/src/gtest-port.cc
index 6faa8b90..f63625b5 100644
--- a/googletest/src/gtest-port.cc
+++ b/googletest/src/gtest-port.cc
@@ -280,10 +280,6 @@ size_t GetThreadCount() {
 
 #if GTEST_IS_THREADSAFE && GTEST_OS_WINDOWS
 
-void SleepMilliseconds(int n) {
-  ::Sleep(static_cast<DWORD>(n));
-}
-
 AutoHandle::AutoHandle()
     : handle_(INVALID_HANDLE_VALUE) {}
 
diff --git a/googletest/test/googletest-port-test.cc b/googletest/test/googletest-port-test.cc
index 16d30c46..b14e1f76 100644
--- a/googletest/test/googletest-port-test.cc
+++ b/googletest/test/googletest-port-test.cc
@@ -36,8 +36,10 @@
 # include <time.h>
 #endif  // GTEST_OS_MAC
 
+#include <chrono>  // NOLINT
 #include <list>
 #include <memory>
+#include <thread>  // NOLINT
 #include <utility>  // For std::pair and std::make_pair.
 #include <vector>
 
@@ -333,7 +335,7 @@ TEST(GetThreadCountTest, ReturnsCorrectValue) {
         break;
       }
 
-      SleepMilliseconds(100);
+      std::this_thread::sleep_for(std::chrono::milliseconds(100));
     }
 
     // Retry if an arbitrary other thread was created or destroyed.
@@ -1050,7 +1052,7 @@ class AtomicCounterWithMutex {
     int temp = value_;
     {
       // We need to put up a memory barrier to prevent reads and writes to
-      // value_ rearranged with the call to SleepMilliseconds when observed
+      // value_ rearranged with the call to sleep_for when observed
       // from other threads.
 #if GTEST_HAS_PTHREAD
       // On POSIX, locking a mutex puts up a memory barrier.  We cannot use
@@ -1061,7 +1063,8 @@ class AtomicCounterWithMutex {
           pthread_mutex_init(&memory_barrier_mutex, nullptr));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_lock(&memory_barrier_mutex));
 
-      SleepMilliseconds(static_cast<int>(random_.Generate(30)));
+      std::this_thread::sleep_for(
+          std::chrono::milliseconds(random_.Generate(30)));
 
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_unlock(&memory_barrier_mutex));
       GTEST_CHECK_POSIX_SUCCESS_(pthread_mutex_destroy(&memory_barrier_mutex));
@@ -1069,7 +1072,8 @@ class AtomicCounterWithMutex {
       // On Windows, performing an interlocked access puts up a memory barrier.
       volatile LONG dummy = 0;
       ::InterlockedIncrement(&dummy);
-      SleepMilliseconds(static_cast<int>(random_.Generate(30)));
+      std::this_thread::sleep_for(
+          std::chrono::milliseconds(random_.Generate(30)));
       ::InterlockedIncrement(&dummy);
 #else
 # error "Memory barrier not implemented on this platform."