library/cpp/actors/prof/tcmalloc.cpp


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#include "tcmalloc.h" 
 
#include <contrib/libs/tcmalloc/tcmalloc/malloc_extension.h> 
 
namespace NProfiling { 
 
static thread_local ui32 AllocationTag = 0; 
 
static struct TInitTCMallocCallbacks { 
    static void* CreateTag() { 
        return reinterpret_cast<void*>(AllocationTag); 
    } 
    static void* CopyTag(void* tag) { 
        return tag; 
    } 
    static void DestroyTag(void* tag) { 
        Y_UNUSED(tag); 
    } 
 
    TInitTCMallocCallbacks() { 
        tcmalloc::MallocExtension::SetSampleUserDataCallbacks( 
            CreateTag, CopyTag, DestroyTag); 
    } 
} InitTCMallocCallbacks; 
 
ui32 SetTCMallocThreadAllocTag(ui32 tag) { 
    ui32 prev = AllocationTag; 
    AllocationTag = tag; 
    return prev; 
} 
 
}