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madvise(..., MADV_{RANODOM,NOSYNC}) swap files.

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Initialize malloc before calling into the ctl_*() functions.
This commit is contained in:
Jason Evans 2010-01-27 13:45:21 -08:00
parent 3c2343518c
commit 95833311f1
2 changed files with 22 additions and 0 deletions
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9
jemalloc/src/jemalloc.c
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@ -1246,6 +1246,9 @@ JEMALLOC_P(mallctl)(const char *name, void *oldp, size_t *oldlenp, void *newp,
size_t newlen)
{
if (malloc_init())
return (EAGAIN);
return (ctl_byname(name, oldp, oldlenp, newp, newlen));
}
@ -1254,6 +1257,9 @@ int
JEMALLOC_P(mallctlnametomib)(const char *name, size_t *mibp, size_t *miblenp)
{
if (malloc_init())
return (EAGAIN);
return (ctl_nametomib(name, mibp, miblenp));
}
@ -1263,6 +1269,9 @@ JEMALLOC_P(mallctlbymib)(const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen)
{
if (malloc_init())
return (EAGAIN);
return (ctl_bymib(mib, miblen, oldp, oldlenp, newp, newlen));
}

13
jemalloc/src/jemalloc_chunk_swap.c
View file

@ -311,6 +311,19 @@ chunk_swap_enable(const int *fds, unsigned nfds, bool prezeroed)
goto RETURN;
}
assert(addr == (void *)((uintptr_t)vaddr + voff));
/*
* Tell the kernel that the mapping will be accessed randomly,
* and that it should not gratuitously sync pages to the
* filesystem.
*/
#ifdef MADV_RANDOM
madvise(addr, sizes[i], MADV_RANDOM);
#endif
#ifdef MADV_NOSYNC
madvise(addr, sizes[i], MADV_NOSYNC);
#endif
voff += sizes[i];
}