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Bug 729453 - Decrease stack allocation in nsTArray::SwapArrayElements from 8KB to 64B. r=roc

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This commit is contained in:
Justin Lebar 2012-02-22 12:26:21 +01:00
parent 722dd03f66
commit fc32ec463a
1 changed files with 2 additions and 2 deletions
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4
xpcom/glue/nsTArray-inl.h
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@ -398,11 +398,11 @@ nsTArray_base<Alloc>::SwapArrayElements(nsTArray_base<Allocator>& other,
}
// Allocate temporary storage for the smaller of the two arrays. We want to
// allocate this space on the stack, unless it's very large. Sounds like a
// allocate this space on the stack, if it's not too large. Sounds like a
// job for AutoTArray! (One of the two arrays we're swapping is using an
// auto buffer, so we're likely not allocating a lot of space here. But one
// could, in theory, allocate a huge AutoTArray on the heap.)
nsAutoTArray<PRUint8, 8192, Alloc> temp;
nsAutoTArray<PRUint8, 64, Alloc> temp;
if (!temp.SetCapacity(smallerLength * elemSize)) {
return false;
}