Revert "auto read all public envs from flags_map in paddle_gtest_main (#36057)" (#36117)

This reverts commit 3fabc808.

paddle/testing/paddle_gtest_main.cc

@@ -15,7 +15,6 @@ limitations under the License. */
 #include "gflags/gflags.h"
 #include "gtest/gtest.h"
 #include "paddle/fluid/memory/allocation/allocator_strategy.h"
-#include "paddle/fluid/platform/flags.h"
 #include "paddle/fluid/platform/init.h"
 #include "paddle/fluid/platform/npu_info.h"
 
@@ -23,11 +22,13 @@ int main(int argc, char** argv) {
   paddle::memory::allocation::UseAllocatorStrategyGFlag();
   testing::InitGoogleTest(&argc, argv);
   std::vector<char*> new_argv;
+  std::string gflags_env;
   for (int i = 0; i < argc; ++i) {
     new_argv.push_back(argv[i]);
   }
 
   std::vector<std::string> envs;
+  std::vector<std::string> undefok;
 #if defined(PADDLE_WITH_DISTRIBUTE) && !defined(PADDLE_WITH_PSLIB)
   std::string str_max_body_size;
   if (::GFLAGS_NAMESPACE::GetCommandLineOption("max_body_size",
@@ -37,13 +38,35 @@ int main(int argc, char** argv) {
   }
 #endif
 
-  const auto& flag_map = paddle::platform::GetExportedFlagInfoMap();
-  for (const auto& pair : flag_map) {
-    const std::string& name = pair.second.name;
-    if (pair.second.is_writable) {  // means public
-      envs.push_back(name);
-    }
-  }
+#if defined(PADDLE_WITH_CUDA) || defined(PADDLE_WITH_HIP) || \
+    defined(PADDLE_WITH_ASCEND_CL)
+  envs.push_back("fraction_of_gpu_memory_to_use");
+  envs.push_back("initial_gpu_memory_in_mb");
+  envs.push_back("reallocate_gpu_memory_in_mb");
+  envs.push_back("allocator_strategy");
+  envs.push_back("selected_gpus");
+#elif __clang__
+  envs.push_back("use_mkldnn");
+  envs.push_back("initial_cpu_memory_in_mb");
+  envs.push_back("allocator_strategy");
+
+  undefok.push_back("use_mkldnn");
+  undefok.push_back("initial_cpu_memory_in_mb");
+#else
+  envs.push_back("use_pinned_memory");
+  envs.push_back("use_mkldnn");
+  envs.push_back("initial_cpu_memory_in_mb");
+  envs.push_back("allocator_strategy");
+
+  undefok.push_back("use_pinned_memory");
+  undefok.push_back("use_mkldnn");
+  undefok.push_back("initial_cpu_memory_in_mb");
+#endif
+
+#if defined(PADDLE_WITH_ASCEND_CL)
+  envs.push_back("selected_npus");
+  envs.push_back("npu_config_path");
+#endif
 
   char* env_str = nullptr;
   if (envs.size() > 0) {
@@ -57,6 +80,18 @@ int main(int argc, char** argv) {
     VLOG(1) << "gtest env_string:" << env_string;
   }
 
+  char* undefok_str = nullptr;
+  if (undefok.size() > 0) {
+    std::string undefok_string = "--undefok=";
+    for (auto t : undefok) {
+      undefok_string += t + ",";
+    }
+    undefok_string = undefok_string.substr(0, undefok_string.length() - 1);
+    undefok_str = strdup(undefok_string.c_str());
+    new_argv.push_back(undefok_str);
+    VLOG(1) << "gtest undefok_string:" << undefok_string;
+  }
+
   int new_argc = static_cast<int>(new_argv.size());
   char** new_argv_address = new_argv.data();
   ::GFLAGS_NAMESPACE::ParseCommandLineFlags(
@@ -70,5 +105,7 @@ int main(int argc, char** argv) {
 #endif
 
   if (env_str) free(env_str);
+  if (undefok_str) free(undefok_str);
+
   return ret;
 }