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| -rw-r--r-- | src/memusage.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/memusage.h b/src/memusage.h index 43407507ed..9d9e549ef2 100644 --- a/src/memusage.h +++ b/src/memusage.h @@ -15,6 +15,7 @@ #include <map> #include <memory> #include <set> +#include <string> #include <vector> #include <unordered_map> #include <unordered_set> @@ -90,6 +91,18 @@ static inline size_t DynamicUsage(const std::vector<T, Allocator>& v) return MallocUsage(v.capacity() * sizeof(T)); } +static inline size_t DynamicUsage(const std::string& s) +{ + const char* s_ptr = reinterpret_cast<const char*>(&s); + // Don't count the dynamic memory used for string, if it resides in the + // "small string" optimization area (which stores data inside the object itself, up to some + // size; 15 bytes in modern libstdc++). + if (!std::less{}(s.data(), s_ptr) && !std::greater{}(s.data() + s.size(), s_ptr + sizeof(s))) { + return 0; + } + return MallocUsage(s.capacity()); +} + template<unsigned int N, typename X, typename S, typename D> static inline size_t DynamicUsage(const prevector<N, X, S, D>& v) { |