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Add the --enable-swap configure option.

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Add malloc_swap_enable().

Add the O/o JEMALLOC_OPTIONS flags, which control memory overcommit.

Fix mapped memory stats reporting for arenas.
This commit is contained in:
Jason Evans
2010-01-24 02:53:40 -08:00
parent ed1bf457fb
commit 4201af0542
23 changed files with 1112 additions and 578 deletions
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jemalloc/src/jemalloc.c
+42
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@@ -632,6 +632,14 @@ MALLOC_OUT:
case 'N':
opt_narenas_lshift++;
break;
#ifdef JEMALLOC_SWAP
case 'o':
opt_overcommit = false;
break;
case 'O':
opt_overcommit = true;
break;
#endif
case 'p':
opt_stats_print = false;
break;
@@ -1197,6 +1205,23 @@ JEMALLOC_P(malloc_usable_size)(const void *ptr)
return (ret);
}
#ifdef JEMALLOC_SWAP
JEMALLOC_ATTR(visibility("default"))
int
JEMALLOC_P(malloc_swap_enable)(const int *fds, unsigned nfds, int prezeroed)
{
/*
* Make sure malloc is initialized, because we need page size, chunk
* size, etc.
*/
if (malloc_init())
return (-1);
return (chunk_swap_enable(fds, nfds, (prezeroed != 0)) ? -1 : 0);
}
#endif
#ifdef JEMALLOC_TCACHE
JEMALLOC_ATTR(visibility("default"))
void
@@ -1213,6 +1238,15 @@ JEMALLOC_P(malloc_tcache_flush)(void)
}
#endif
JEMALLOC_ATTR(visibility("default"))
void
JEMALLOC_P(malloc_stats_print)(void (*write4)(void *, const char *,
const char *, const char *, const char *), void *w4opaque, const char *opts)
{
stats_print(write4, w4opaque, opts);
}
/*
* End non-standard functions.
*/
@@ -1271,6 +1305,10 @@ jemalloc_prefork(void)
#ifdef JEMALLOC_DSS
malloc_mutex_lock(&dss_mtx);
#endif
#ifdef JEMALLOC_SWAP
malloc_mutex_lock(&swap_mtx);
#endif
}
static void
@@ -1281,6 +1319,10 @@ jemalloc_postfork(void)
/* Release all mutexes, now that fork() has completed. */
#ifdef JEMALLOC_SWAP
malloc_mutex_unlock(&swap_mtx);
#endif
#ifdef JEMALLOC_DSS
malloc_mutex_unlock(&dss_mtx);
#endif