return result;
}
-/**
- * For jemalloc's size classes, see
- * http://www.canonware.com/download/jemalloc/jemalloc-latest/doc/jemalloc.html
- */
inline size_t goodMallocSize(size_t minSize) noexcept {
+ if (minSize == 0) {
+ return 0;
+ }
+
if (!usingJEMalloc()) {
// Not using jemalloc - no smarts
return minSize;
}
- size_t goodSize;
- if (minSize <= 64) {
- // Choose smallest allocation to be 64 bytes - no tripping over
- // cache line boundaries, and small string optimization takes care
- // of short strings anyway.
- goodSize = 64;
- } else if (minSize <= 512) {
- // Round up to the next multiple of 64; we don't want to trip over
- // cache line boundaries.
- goodSize = (minSize + 63) & ~size_t(63);
- } else {
- // Boundaries between size classes depend on numerious factors, some of
- // which can even be modified at run-time. Determine the good allocation
- // size by calling nallocx() directly.
- goodSize = nallocx(minSize, 0);
- }
- assert(nallocx(goodSize, 0) == goodSize);
- return goodSize;
+
+ return nallocx(minSize, 0);
}
// We always request "good" sizes for allocation, so jemalloc can