Try to decommit new chunks.
Always leave decommit disabled on non-Windows systems.
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@@ -145,7 +145,8 @@ chunk_alloc_dss(arena_t *arena, void *new_addr, size_t size, size_t alignment,
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ret, size);
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memset(ret, 0, size);
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}
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*commit = true;
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if (!*commit)
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*commit = pages_decommit(ret, size);
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return (ret);
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}
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} while (dss_prev != (void *)-1);
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@@ -24,7 +24,8 @@ chunk_alloc_mmap_slow(size_t size, size_t alignment, bool *zero, bool *commit)
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assert(ret != NULL);
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*zero = true;
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*commit = true;
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if (!*commit)
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*commit = pages_decommit(ret, size);
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return (ret);
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}
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@@ -61,7 +62,8 @@ chunk_alloc_mmap(size_t size, size_t alignment, bool *zero, bool *commit)
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assert(ret != NULL);
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*zero = true;
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*commit = true;
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if (!*commit)
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*commit = pages_decommit(ret, size);
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return (ret);
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}
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@@ -102,7 +102,13 @@ pages_commit_impl(void *addr, size_t size, bool commit)
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{
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#ifndef _WIN32
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if (config_debug) {
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/*
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* The following decommit/commit implementation is functional, but
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* always disabled because it doesn't add value beyong improved
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* debugging (at the cost of extra system calls) on systems that
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* overcommit.
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*/
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if (false) {
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int prot = commit ? (PROT_READ | PROT_WRITE) : PROT_NONE;
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void *result = mmap(addr, size, prot, MAP_PRIVATE | MAP_ANON |
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MAP_FIXED, -1, 0);
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