Add m-esr52 at 52.6.0

1 files changed, 731 insertions, 0 deletions

diff --git a/memory/jemalloc/src/test/unit/mallctl.c b/memory/jemalloc/src/test/unit/mallctl.c
new file mode 100644
index 000000000..69f8c20c1
--- /dev/null
+++ b/memory/jemalloc/src/test/unit/mallctl.c
@@ -0,0 +1,731 @@
+#include "test/jemalloc_test.h"
+
+TEST_BEGIN(test_mallctl_errors)
+{
+	uint64_t epoch;
+	size_t sz;
+
+	assert_d_eq(mallctl("no_such_name", NULL, NULL, NULL, 0), ENOENT,
+	    "mallctl() should return ENOENT for non-existent names");
+
+	assert_d_eq(mallctl("version", NULL, NULL, "0.0.0", strlen("0.0.0")),
+	    EPERM, "mallctl() should return EPERM on attempt to write "
+	    "read-only value");
+
+	assert_d_eq(mallctl("epoch", NULL, NULL, &epoch, sizeof(epoch)-1),
+	    EINVAL, "mallctl() should return EINVAL for input size mismatch");
+	assert_d_eq(mallctl("epoch", NULL, NULL, &epoch, sizeof(epoch)+1),
+	    EINVAL, "mallctl() should return EINVAL for input size mismatch");
+
+	sz = sizeof(epoch)-1;
+	assert_d_eq(mallctl("epoch", &epoch, &sz, NULL, 0), EINVAL,
+	    "mallctl() should return EINVAL for output size mismatch");
+	sz = sizeof(epoch)+1;
+	assert_d_eq(mallctl("epoch", &epoch, &sz, NULL, 0), EINVAL,
+	    "mallctl() should return EINVAL for output size mismatch");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlnametomib_errors)
+{
+	size_t mib[1];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	assert_d_eq(mallctlnametomib("no_such_name", mib, &miblen), ENOENT,
+	    "mallctlnametomib() should return ENOENT for non-existent names");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlbymib_errors)
+{
+	uint64_t epoch;
+	size_t sz;
+	size_t mib[1];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	assert_d_eq(mallctlnametomib("version", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+
+	assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL, "0.0.0",
+	    strlen("0.0.0")), EPERM, "mallctl() should return EPERM on "
+	    "attempt to write read-only value");
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	assert_d_eq(mallctlnametomib("epoch", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+
+	assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &epoch,
+	    sizeof(epoch)-1), EINVAL,
+	    "mallctlbymib() should return EINVAL for input size mismatch");
+	assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &epoch,
+	    sizeof(epoch)+1), EINVAL,
+	    "mallctlbymib() should return EINVAL for input size mismatch");
+
+	sz = sizeof(epoch)-1;
+	assert_d_eq(mallctlbymib(mib, miblen, &epoch, &sz, NULL, 0), EINVAL,
+	    "mallctlbymib() should return EINVAL for output size mismatch");
+	sz = sizeof(epoch)+1;
+	assert_d_eq(mallctlbymib(mib, miblen, &epoch, &sz, NULL, 0), EINVAL,
+	    "mallctlbymib() should return EINVAL for output size mismatch");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctl_read_write)
+{
+	uint64_t old_epoch, new_epoch;
+	size_t sz = sizeof(old_epoch);
+
+	/* Blind. */
+	assert_d_eq(mallctl("epoch", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+
+	/* Read. */
+	assert_d_eq(mallctl("epoch", &old_epoch, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+
+	/* Write. */
+	assert_d_eq(mallctl("epoch", NULL, NULL, &new_epoch, sizeof(new_epoch)),
+	    0, "Unexpected mallctl() failure");
+	assert_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+
+	/* Read+write. */
+	assert_d_eq(mallctl("epoch", &old_epoch, &sz, &new_epoch,
+	    sizeof(new_epoch)), 0, "Unexpected mallctl() failure");
+	assert_zu_eq(sz, sizeof(old_epoch), "Unexpected output size");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctlnametomib_short_mib)
+{
+	size_t mib[4];
+	size_t miblen;
+
+	miblen = 3;
+	mib[3] = 42;
+	assert_d_eq(mallctlnametomib("arenas.bin.0.nregs", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	assert_zu_eq(miblen, 3, "Unexpected mib output length");
+	assert_zu_eq(mib[3], 42,
+	    "mallctlnametomib() wrote past the end of the input mib");
+}
+TEST_END
+
+TEST_BEGIN(test_mallctl_config)
+{
+
+#define	TEST_MALLCTL_CONFIG(config, t) do {				\
+	t oldval;							\
+	size_t sz = sizeof(oldval);					\
+	assert_d_eq(mallctl("config."#config, &oldval, &sz, NULL, 0),	\
+	    0, "Unexpected mallctl() failure");				\
+	assert_b_eq(oldval, config_##config, "Incorrect config value");	\
+	assert_zu_eq(sz, sizeof(oldval), "Unexpected output size");	\
+} while (0)
+
+	TEST_MALLCTL_CONFIG(cache_oblivious, bool);
+	TEST_MALLCTL_CONFIG(debug, bool);
+	TEST_MALLCTL_CONFIG(fill, bool);
+	TEST_MALLCTL_CONFIG(lazy_lock, bool);
+	TEST_MALLCTL_CONFIG(malloc_conf, const char *);
+	TEST_MALLCTL_CONFIG(munmap, bool);
+	TEST_MALLCTL_CONFIG(prof, bool);
+	TEST_MALLCTL_CONFIG(prof_libgcc, bool);
+	TEST_MALLCTL_CONFIG(prof_libunwind, bool);
+	TEST_MALLCTL_CONFIG(stats, bool);
+	TEST_MALLCTL_CONFIG(tcache, bool);
+	TEST_MALLCTL_CONFIG(tls, bool);
+	TEST_MALLCTL_CONFIG(utrace, bool);
+	TEST_MALLCTL_CONFIG(valgrind, bool);
+	TEST_MALLCTL_CONFIG(xmalloc, bool);
+
+#undef TEST_MALLCTL_CONFIG
+}
+TEST_END
+
+TEST_BEGIN(test_mallctl_opt)
+{
+	bool config_always = true;
+
+#define	TEST_MALLCTL_OPT(t, opt, config) do {				\
+	t oldval;							\
+	size_t sz = sizeof(oldval);					\
+	int expected = config_##config ? 0 : ENOENT;			\
+	int result = mallctl("opt."#opt, &oldval, &sz, NULL, 0);	\
+	assert_d_eq(result, expected,					\
+	    "Unexpected mallctl() result for opt."#opt);		\
+	assert_zu_eq(sz, sizeof(oldval), "Unexpected output size");	\
+} while (0)
+
+	TEST_MALLCTL_OPT(bool, abort, always);
+	TEST_MALLCTL_OPT(size_t, lg_chunk, always);
+	TEST_MALLCTL_OPT(const char *, dss, always);
+	TEST_MALLCTL_OPT(unsigned, narenas, always);
+	TEST_MALLCTL_OPT(const char *, purge, always);
+	TEST_MALLCTL_OPT(ssize_t, lg_dirty_mult, always);
+	TEST_MALLCTL_OPT(ssize_t, decay_time, always);
+	TEST_MALLCTL_OPT(bool, stats_print, always);
+	TEST_MALLCTL_OPT(const char *, junk, fill);
+	TEST_MALLCTL_OPT(size_t, quarantine, fill);
+	TEST_MALLCTL_OPT(bool, redzone, fill);
+	TEST_MALLCTL_OPT(bool, zero, fill);
+	TEST_MALLCTL_OPT(bool, utrace, utrace);
+	TEST_MALLCTL_OPT(bool, xmalloc, xmalloc);
+	TEST_MALLCTL_OPT(bool, tcache, tcache);
+	TEST_MALLCTL_OPT(size_t, lg_tcache_max, tcache);
+	TEST_MALLCTL_OPT(bool, prof, prof);
+	TEST_MALLCTL_OPT(const char *, prof_prefix, prof);
+	TEST_MALLCTL_OPT(bool, prof_active, prof);
+	TEST_MALLCTL_OPT(ssize_t, lg_prof_sample, prof);
+	TEST_MALLCTL_OPT(bool, prof_accum, prof);
+	TEST_MALLCTL_OPT(ssize_t, lg_prof_interval, prof);
+	TEST_MALLCTL_OPT(bool, prof_gdump, prof);
+	TEST_MALLCTL_OPT(bool, prof_final, prof);
+	TEST_MALLCTL_OPT(bool, prof_leak, prof);
+
+#undef TEST_MALLCTL_OPT
+}
+TEST_END
+
+TEST_BEGIN(test_manpage_example)
+{
+	unsigned nbins, i;
+	size_t mib[4];
+	size_t len, miblen;
+
+	len = sizeof(nbins);
+	assert_d_eq(mallctl("arenas.nbins", &nbins, &len, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	miblen = 4;
+	assert_d_eq(mallctlnametomib("arenas.bin.0.size", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	for (i = 0; i < nbins; i++) {
+		size_t bin_size;
+
+		mib[2] = i;
+		len = sizeof(bin_size);
+		assert_d_eq(mallctlbymib(mib, miblen, &bin_size, &len, NULL, 0),
+		    0, "Unexpected mallctlbymib() failure");
+		/* Do something with bin_size... */
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_tcache_none)
+{
+	void *p0, *q, *p1;
+
+	test_skip_if(!config_tcache);
+
+	/* Allocate p and q. */
+	p0 = mallocx(42, 0);
+	assert_ptr_not_null(p0, "Unexpected mallocx() failure");
+	q = mallocx(42, 0);
+	assert_ptr_not_null(q, "Unexpected mallocx() failure");
+
+	/* Deallocate p and q, but bypass the tcache for q. */
+	dallocx(p0, 0);
+	dallocx(q, MALLOCX_TCACHE_NONE);
+
+	/* Make sure that tcache-based allocation returns p, not q. */
+	p1 = mallocx(42, 0);
+	assert_ptr_not_null(p1, "Unexpected mallocx() failure");
+	assert_ptr_eq(p0, p1, "Expected tcache to allocate cached region");
+
+	/* Clean up. */
+	dallocx(p1, MALLOCX_TCACHE_NONE);
+}
+TEST_END
+
+TEST_BEGIN(test_tcache)
+{
+#define	NTCACHES	10
+	unsigned tis[NTCACHES];
+	void *ps[NTCACHES];
+	void *qs[NTCACHES];
+	unsigned i;
+	size_t sz, psz, qsz;
+
+	test_skip_if(!config_tcache);
+
+	psz = 42;
+	qsz = nallocx(psz, 0) + 1;
+
+	/* Create tcaches. */
+	for (i = 0; i < NTCACHES; i++) {
+		sz = sizeof(unsigned);
+		assert_d_eq(mallctl("tcache.create", &tis[i], &sz, NULL, 0), 0,
+		    "Unexpected mallctl() failure, i=%u", i);
+	}
+
+	/* Exercise tcache ID recycling. */
+	for (i = 0; i < NTCACHES; i++) {
+		assert_d_eq(mallctl("tcache.destroy", NULL, NULL, &tis[i],
+		    sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u",
+		    i);
+	}
+	for (i = 0; i < NTCACHES; i++) {
+		sz = sizeof(unsigned);
+		assert_d_eq(mallctl("tcache.create", &tis[i], &sz, NULL, 0), 0,
+		    "Unexpected mallctl() failure, i=%u", i);
+	}
+
+	/* Flush empty tcaches. */
+	for (i = 0; i < NTCACHES; i++) {
+		assert_d_eq(mallctl("tcache.flush", NULL, NULL, &tis[i],
+		    sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u",
+		    i);
+	}
+
+	/* Cache some allocations. */
+	for (i = 0; i < NTCACHES; i++) {
+		ps[i] = mallocx(psz, MALLOCX_TCACHE(tis[i]));
+		assert_ptr_not_null(ps[i], "Unexpected mallocx() failure, i=%u",
+		    i);
+		dallocx(ps[i], MALLOCX_TCACHE(tis[i]));
+
+		qs[i] = mallocx(qsz, MALLOCX_TCACHE(tis[i]));
+		assert_ptr_not_null(qs[i], "Unexpected mallocx() failure, i=%u",
+		    i);
+		dallocx(qs[i], MALLOCX_TCACHE(tis[i]));
+	}
+
+	/* Verify that tcaches allocate cached regions. */
+	for (i = 0; i < NTCACHES; i++) {
+		void *p0 = ps[i];
+		ps[i] = mallocx(psz, MALLOCX_TCACHE(tis[i]));
+		assert_ptr_not_null(ps[i], "Unexpected mallocx() failure, i=%u",
+		    i);
+		assert_ptr_eq(ps[i], p0,
+		    "Expected mallocx() to allocate cached region, i=%u", i);
+	}
+
+	/* Verify that reallocation uses cached regions. */
+	for (i = 0; i < NTCACHES; i++) {
+		void *q0 = qs[i];
+		qs[i] = rallocx(ps[i], qsz, MALLOCX_TCACHE(tis[i]));
+		assert_ptr_not_null(qs[i], "Unexpected rallocx() failure, i=%u",
+		    i);
+		assert_ptr_eq(qs[i], q0,
+		    "Expected rallocx() to allocate cached region, i=%u", i);
+		/* Avoid undefined behavior in case of test failure. */
+		if (qs[i] == NULL)
+			qs[i] = ps[i];
+	}
+	for (i = 0; i < NTCACHES; i++)
+		dallocx(qs[i], MALLOCX_TCACHE(tis[i]));
+
+	/* Flush some non-empty tcaches. */
+	for (i = 0; i < NTCACHES/2; i++) {
+		assert_d_eq(mallctl("tcache.flush", NULL, NULL, &tis[i],
+		    sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u",
+		    i);
+	}
+
+	/* Destroy tcaches. */
+	for (i = 0; i < NTCACHES; i++) {
+		assert_d_eq(mallctl("tcache.destroy", NULL, NULL, &tis[i],
+		    sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u",
+		    i);
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_thread_arena)
+{
+	unsigned arena_old, arena_new, narenas;
+	size_t sz = sizeof(unsigned);
+
+	assert_d_eq(mallctl("arenas.narenas", &narenas, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_u_eq(narenas, opt_narenas, "Number of arenas incorrect");
+	arena_new = narenas - 1;
+	assert_d_eq(mallctl("thread.arena", &arena_old, &sz, &arena_new,
+	    sizeof(unsigned)), 0, "Unexpected mallctl() failure");
+	arena_new = 0;
+	assert_d_eq(mallctl("thread.arena", &arena_old, &sz, &arena_new,
+	    sizeof(unsigned)), 0, "Unexpected mallctl() failure");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_lg_dirty_mult)
+{
+	ssize_t lg_dirty_mult, orig_lg_dirty_mult, prev_lg_dirty_mult;
+	size_t sz = sizeof(ssize_t);
+
+	test_skip_if(opt_purge != purge_mode_ratio);
+
+	assert_d_eq(mallctl("arena.0.lg_dirty_mult", &orig_lg_dirty_mult, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+
+	lg_dirty_mult = -2;
+	assert_d_eq(mallctl("arena.0.lg_dirty_mult", NULL, NULL,
+	    &lg_dirty_mult, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	lg_dirty_mult = (sizeof(size_t) << 3);
+	assert_d_eq(mallctl("arena.0.lg_dirty_mult", NULL, NULL,
+	    &lg_dirty_mult, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	for (prev_lg_dirty_mult = orig_lg_dirty_mult, lg_dirty_mult = -1;
+	    lg_dirty_mult < (ssize_t)(sizeof(size_t) << 3); prev_lg_dirty_mult
+	    = lg_dirty_mult, lg_dirty_mult++) {
+		ssize_t old_lg_dirty_mult;
+
+		assert_d_eq(mallctl("arena.0.lg_dirty_mult", &old_lg_dirty_mult,
+		    &sz, &lg_dirty_mult, sizeof(ssize_t)), 0,
+		    "Unexpected mallctl() failure");
+		assert_zd_eq(old_lg_dirty_mult, prev_lg_dirty_mult,
+		    "Unexpected old arena.0.lg_dirty_mult");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_decay_time)
+{
+	ssize_t decay_time, orig_decay_time, prev_decay_time;
+	size_t sz = sizeof(ssize_t);
+
+	test_skip_if(opt_purge != purge_mode_decay);
+
+	assert_d_eq(mallctl("arena.0.decay_time", &orig_decay_time, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+
+	decay_time = -2;
+	assert_d_eq(mallctl("arena.0.decay_time", NULL, NULL,
+	    &decay_time, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	decay_time = 0x7fffffff;
+	assert_d_eq(mallctl("arena.0.decay_time", NULL, NULL,
+	    &decay_time, sizeof(ssize_t)), 0,
+	    "Unexpected mallctl() failure");
+
+	for (prev_decay_time = decay_time, decay_time = -1;
+	    decay_time < 20; prev_decay_time = decay_time, decay_time++) {
+		ssize_t old_decay_time;
+
+		assert_d_eq(mallctl("arena.0.decay_time", &old_decay_time,
+		    &sz, &decay_time, sizeof(ssize_t)), 0,
+		    "Unexpected mallctl() failure");
+		assert_zd_eq(old_decay_time, prev_decay_time,
+		    "Unexpected old arena.0.decay_time");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_purge)
+{
+	unsigned narenas;
+	size_t sz = sizeof(unsigned);
+	size_t mib[3];
+	size_t miblen = 3;
+
+	assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	assert_d_eq(mallctl("arenas.narenas", &narenas, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_d_eq(mallctlnametomib("arena.0.purge", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = narenas;
+	assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_decay)
+{
+	unsigned narenas;
+	size_t sz = sizeof(unsigned);
+	size_t mib[3];
+	size_t miblen = 3;
+
+	assert_d_eq(mallctl("arena.0.decay", NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	assert_d_eq(mallctl("arenas.narenas", &narenas, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_d_eq(mallctlnametomib("arena.0.decay", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() failure");
+	mib[1] = narenas;
+	assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0,
+	    "Unexpected mallctlbymib() failure");
+}
+TEST_END
+
+TEST_BEGIN(test_arena_i_dss)
+{
+	const char *dss_prec_old, *dss_prec_new;
+	size_t sz = sizeof(dss_prec_old);
+	size_t mib[3];
+	size_t miblen;
+
+	miblen = sizeof(mib)/sizeof(size_t);
+	assert_d_eq(mallctlnametomib("arena.0.dss", mib, &miblen), 0,
+	    "Unexpected mallctlnametomib() error");
+
+	dss_prec_new = "disabled";
+	assert_d_eq(mallctlbymib(mib, miblen, &dss_prec_old, &sz, &dss_prec_new,
+	    sizeof(dss_prec_new)), 0, "Unexpected mallctl() failure");
+	assert_str_ne(dss_prec_old, "primary",
+	    "Unexpected default for dss precedence");
+
+	assert_d_eq(mallctlbymib(mib, miblen, &dss_prec_new, &sz, &dss_prec_old,
+	    sizeof(dss_prec_old)), 0, "Unexpected mallctl() failure");
+
+	assert_d_eq(mallctlbymib(mib, miblen, &dss_prec_old, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_str_ne(dss_prec_old, "primary",
+	    "Unexpected value for dss precedence");
+
+	mib[1] = narenas_total_get();
+	dss_prec_new = "disabled";
+	assert_d_eq(mallctlbymib(mib, miblen, &dss_prec_old, &sz, &dss_prec_new,
+	    sizeof(dss_prec_new)), 0, "Unexpected mallctl() failure");
+	assert_str_ne(dss_prec_old, "primary",
+	    "Unexpected default for dss precedence");
+
+	assert_d_eq(mallctlbymib(mib, miblen, &dss_prec_new, &sz, &dss_prec_old,
+	    sizeof(dss_prec_new)), 0, "Unexpected mallctl() failure");
+
+	assert_d_eq(mallctlbymib(mib, miblen, &dss_prec_old, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_str_ne(dss_prec_old, "primary",
+	    "Unexpected value for dss precedence");
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_initialized)
+{
+	unsigned narenas;
+	size_t sz = sizeof(narenas);
+
+	assert_d_eq(mallctl("arenas.narenas", &narenas, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	{
+		VARIABLE_ARRAY(bool, initialized, narenas);
+
+		sz = narenas * sizeof(bool);
+		assert_d_eq(mallctl("arenas.initialized", initialized, &sz,
+		    NULL, 0), 0, "Unexpected mallctl() failure");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_lg_dirty_mult)
+{
+	ssize_t lg_dirty_mult, orig_lg_dirty_mult, prev_lg_dirty_mult;
+	size_t sz = sizeof(ssize_t);
+
+	test_skip_if(opt_purge != purge_mode_ratio);
+
+	assert_d_eq(mallctl("arenas.lg_dirty_mult", &orig_lg_dirty_mult, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+
+	lg_dirty_mult = -2;
+	assert_d_eq(mallctl("arenas.lg_dirty_mult", NULL, NULL,
+	    &lg_dirty_mult, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	lg_dirty_mult = (sizeof(size_t) << 3);
+	assert_d_eq(mallctl("arenas.lg_dirty_mult", NULL, NULL,
+	    &lg_dirty_mult, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	for (prev_lg_dirty_mult = orig_lg_dirty_mult, lg_dirty_mult = -1;
+	    lg_dirty_mult < (ssize_t)(sizeof(size_t) << 3); prev_lg_dirty_mult =
+	    lg_dirty_mult, lg_dirty_mult++) {
+		ssize_t old_lg_dirty_mult;
+
+		assert_d_eq(mallctl("arenas.lg_dirty_mult", &old_lg_dirty_mult,
+		    &sz, &lg_dirty_mult, sizeof(ssize_t)), 0,
+		    "Unexpected mallctl() failure");
+		assert_zd_eq(old_lg_dirty_mult, prev_lg_dirty_mult,
+		    "Unexpected old arenas.lg_dirty_mult");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_decay_time)
+{
+	ssize_t decay_time, orig_decay_time, prev_decay_time;
+	size_t sz = sizeof(ssize_t);
+
+	test_skip_if(opt_purge != purge_mode_decay);
+
+	assert_d_eq(mallctl("arenas.decay_time", &orig_decay_time, &sz,
+	    NULL, 0), 0, "Unexpected mallctl() failure");
+
+	decay_time = -2;
+	assert_d_eq(mallctl("arenas.decay_time", NULL, NULL,
+	    &decay_time, sizeof(ssize_t)), EFAULT,
+	    "Unexpected mallctl() success");
+
+	decay_time = 0x7fffffff;
+	assert_d_eq(mallctl("arenas.decay_time", NULL, NULL,
+	    &decay_time, sizeof(ssize_t)), 0,
+	    "Expected mallctl() failure");
+
+	for (prev_decay_time = decay_time, decay_time = -1;
+	    decay_time < 20; prev_decay_time = decay_time, decay_time++) {
+		ssize_t old_decay_time;
+
+		assert_d_eq(mallctl("arenas.decay_time", &old_decay_time,
+		    &sz, &decay_time, sizeof(ssize_t)), 0,
+		    "Unexpected mallctl() failure");
+		assert_zd_eq(old_decay_time, prev_decay_time,
+		    "Unexpected old arenas.decay_time");
+	}
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_constants)
+{
+
+#define	TEST_ARENAS_CONSTANT(t, name, expected) do {			\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	assert_d_eq(mallctl("arenas."#name, &name, &sz, NULL, 0), 0,	\
+	    "Unexpected mallctl() failure");				\
+	assert_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_CONSTANT(size_t, quantum, QUANTUM);
+	TEST_ARENAS_CONSTANT(size_t, page, PAGE);
+	TEST_ARENAS_CONSTANT(unsigned, nbins, NBINS);
+	TEST_ARENAS_CONSTANT(unsigned, nlruns, nlclasses);
+	TEST_ARENAS_CONSTANT(unsigned, nhchunks, nhclasses);
+
+#undef TEST_ARENAS_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_bin_constants)
+{
+
+#define	TEST_ARENAS_BIN_CONSTANT(t, name, expected) do {		\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	assert_d_eq(mallctl("arenas.bin.0."#name, &name, &sz, NULL, 0),	\
+	    0, "Unexpected mallctl() failure");				\
+	assert_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_BIN_CONSTANT(size_t, size, arena_bin_info[0].reg_size);
+	TEST_ARENAS_BIN_CONSTANT(uint32_t, nregs, arena_bin_info[0].nregs);
+	TEST_ARENAS_BIN_CONSTANT(size_t, run_size, arena_bin_info[0].run_size);
+
+#undef TEST_ARENAS_BIN_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_lrun_constants)
+{
+
+#define	TEST_ARENAS_LRUN_CONSTANT(t, name, expected) do {		\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	assert_d_eq(mallctl("arenas.lrun.0."#name, &name, &sz, NULL,	\
+	    0), 0, "Unexpected mallctl() failure");			\
+	assert_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_LRUN_CONSTANT(size_t, size, LARGE_MINCLASS);
+
+#undef TEST_ARENAS_LRUN_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_hchunk_constants)
+{
+
+#define	TEST_ARENAS_HCHUNK_CONSTANT(t, name, expected) do {		\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	assert_d_eq(mallctl("arenas.hchunk.0."#name, &name, &sz, NULL,	\
+	    0), 0, "Unexpected mallctl() failure");			\
+	assert_zu_eq(name, expected, "Incorrect "#name" size");		\
+} while (0)
+
+	TEST_ARENAS_HCHUNK_CONSTANT(size_t, size, chunksize);
+
+#undef TEST_ARENAS_HCHUNK_CONSTANT
+}
+TEST_END
+
+TEST_BEGIN(test_arenas_extend)
+{
+	unsigned narenas_before, arena, narenas_after;
+	size_t sz = sizeof(unsigned);
+
+	assert_d_eq(mallctl("arenas.narenas", &narenas_before, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_d_eq(mallctl("arenas.extend", &arena, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+	assert_d_eq(mallctl("arenas.narenas", &narenas_after, &sz, NULL, 0), 0,
+	    "Unexpected mallctl() failure");
+
+	assert_u_eq(narenas_before+1, narenas_after,
+	    "Unexpected number of arenas before versus after extension");
+	assert_u_eq(arena, narenas_after-1, "Unexpected arena index");
+}
+TEST_END
+
+TEST_BEGIN(test_stats_arenas)
+{
+
+#define	TEST_STATS_ARENAS(t, name) do {					\
+	t name;								\
+	size_t sz = sizeof(t);						\
+	assert_d_eq(mallctl("stats.arenas.0."#name, &name, &sz, NULL,	\
+	    0), 0, "Unexpected mallctl() failure");			\
+} while (0)
+
+	TEST_STATS_ARENAS(unsigned, nthreads);
+	TEST_STATS_ARENAS(const char *, dss);
+	TEST_STATS_ARENAS(ssize_t, lg_dirty_mult);
+	TEST_STATS_ARENAS(ssize_t, decay_time);
+	TEST_STATS_ARENAS(size_t, pactive);
+	TEST_STATS_ARENAS(size_t, pdirty);
+
+#undef TEST_STATS_ARENAS
+}
+TEST_END
+
+int
+main(void)
+{
+
+	return (test(
+	    test_mallctl_errors,
+	    test_mallctlnametomib_errors,
+	    test_mallctlbymib_errors,
+	    test_mallctl_read_write,
+	    test_mallctlnametomib_short_mib,
+	    test_mallctl_config,
+	    test_mallctl_opt,
+	    test_manpage_example,
+	    test_tcache_none,
+	    test_tcache,
+	    test_thread_arena,
+	    test_arena_i_lg_dirty_mult,
+	    test_arena_i_decay_time,
+	    test_arena_i_purge,
+	    test_arena_i_decay,
+	    test_arena_i_dss,
+	    test_arenas_initialized,
+	    test_arenas_lg_dirty_mult,
+	    test_arenas_decay_time,
+	    test_arenas_constants,
+	    test_arenas_bin_constants,
+	    test_arenas_lrun_constants,
+	    test_arenas_hchunk_constants,
+	    test_arenas_extend,
+	    test_stats_arenas));
+}