Use pretty_name in F14TableStats

Summary: [Folly] Use `pretty_name` in `F14TableStats`, which may not be exact in edge cases (e.g. function-local policy types) but which works without RTTI.

Reviewed By: nbronson

Differential Revision: D14129242

fbshipit-source-id: 6f7a8e0b3af4d6b16673770228e98cd989ab0c3f

folly/container/detail/F14Table.h

@@ -41,6 +41,7 @@
 #include <folly/lang/Assume.h>
 #include <folly/lang/Exception.h>
 #include <folly/lang/Launder.h>
+#include <folly/lang/Pretty.h>
 #include <folly/lang/SafeAssert.h>
 #include <folly/portability/Builtins.h>
 
@@ -2574,9 +2575,7 @@ class F14Table : public Policy {
     FOLLY_SAFE_DCHECK(n1 == size(), "");
     FOLLY_SAFE_DCHECK(n2 == size(), "");
 
-#if FOLLY_HAS_RTTI
-    stats.policy = typeid(Policy).name();
-#endif
+    stats.policy = pretty_name<Policy>();
     stats.size = size();
     stats.valueSize = sizeof(value_type);
     stats.bucketCount = bucket_count();

folly/container/test/F14TestUtil.h

@@ -23,7 +23,6 @@
 #include <ostream>
 #include <vector>
 
-#include <folly/Demangle.h>
 #include <folly/Function.h>
 #include <folly/container/detail/F14Policy.h>
 #include <folly/container/detail/F14Table.h>
@@ -442,13 +441,7 @@ std::ostream& operator<<(std::ostream& xo, F14TableStats const& stats) {
   using f14::Histo;
 
   xo << "{ " << std::endl;
-  xo << "  policy: "
-#if FOLLY_HAS_RTTI
-     << folly::demangle(stats.policy)
-#else
-     << "unknown (RTTI not availabe)"
-#endif
-     << std::endl;
+  xo << "  policy: " << stats.policy << std::endl;
   xo << "  size: " << stats.size << std::endl;
   xo << "  valueSize: " << stats.valueSize << std::endl;
   xo << "  bucketCount: " << stats.bucketCount << std::endl;