ClearCache() method in NMalloc

commit_hash:2a9ac53b44252aeea5188e821743fc79b064947b

1 files changed, 8 insertions, 0 deletions

diff --git a/library/cpp/malloc/tcmalloc/malloc-info.cpp b/library/cpp/malloc/tcmalloc/malloc-info.cpp
index fbcfa7ee06a..fc4603de595 100644
--- a/library/cpp/malloc/tcmalloc/malloc-info.cpp
+++ b/library/cpp/malloc/tcmalloc/malloc-info.cpp
@@ -1,4 +1,5 @@
 #include <library/cpp/malloc/api/malloc.h>
+#include <contrib/libs/tcmalloc/tcmalloc/internal_malloc_extension.h>
 
 using namespace NMalloc;
 
@@ -7,3 +8,10 @@ TMallocInfo NMalloc::MallocInfo() {
     r.Name = "tcmalloc";
     return r;
 }
+
+void NMalloc::ClearCaches() {
+    // not available on darwin, see internal_malloc_extension.h for details
+#ifndef _darwin_
+    MallocExtension_Internal_ReleaseMemoryToSystem(std::numeric_limits<size_t>::max());
+#endif
+}