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Refactor arena_mapbits unzeroed flag management.

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Only set the unzeroed flag when initializing the entire mapbits entry,
rather than mutating just the unzeroed bit.  This simplifies the
possible mapbits state transitions.
This commit is contained in:
Jason Evans 2015-08-10 23:03:34 -07:00
parent de249c8679
commit 45186f0c07
4 changed files with 35 additions and 37 deletions
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2
src/pages.c
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@ -102,7 +102,7 @@ pages_commit_impl(void *addr, size_t size, bool commit)
{
#ifndef _WIN32
if (config_debug) {
if (false &&/*XXX*/ config_debug) {
int prot = commit ? (PROT_READ | PROT_WRITE) : PROT_NONE;
void *result = mmap(addr, size, prot, MAP_PRIVATE | MAP_ANON |
MAP_FIXED, -1, 0);