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NuDB: Enforce pool_thresh minimum of 1:

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pool_thresh is prevented from going to zero. This solves a problem when
using callgrind where the CPU is monopolized, causing operations that
should complete quickly to take days.
This commit is contained in:
Vinnie Falco
2015-03-26 16:55:51 -07:00
committed by Tom Ritchford
parent 936e83759d
commit b27e152ead
1 changed files with 4 additions and 2 deletions
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6
src/beast/beast/nudb/store.h
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@@ -124,7 +124,7 @@ private:
detail::key_file_header const kh;
// pool commit high water mark
std::size_t pool_thresh = 0;
std::size_t pool_thresh = 1;
state (state const&) = delete;
state& operator= (state const&) = delete;
@@ -916,7 +916,9 @@ store<Hasher, Codec, File>::run()
if (timeout)
{
m.lock();
s_->pool_thresh /= 2;
s_->pool_thresh =
std::max<std::size_t>(
1, s_->pool_thresh / 2);
s_->p1.shrink_to_fit();
s_->p0.shrink_to_fit();
s_->c1.shrink_to_fit();