Convert ALLOCM_ARENA() test to MALLOCX_ARENA() test.

test/integration/MALLOCX_ARENA.c

@@ -0,0 +1,58 @@
+#include "test/jemalloc_test.h"
+
+#define	NTHREADS 10
+
+void *
+thd_start(void *arg)
+{
+	unsigned thread_ind = (unsigned)(uintptr_t)arg;
+	unsigned arena_ind;
+	void *p;
+	size_t sz;
+
+	sz = sizeof(arena_ind);
+	assert_d_eq(mallctl("arenas.extend", &arena_ind, &sz, NULL, 0), 0,
+	    "Error in arenas.extend");
+
+	if (thread_ind % 4 != 3) {
+		size_t mib[3];
+		size_t miblen = sizeof(mib) / sizeof(size_t);
+		const char *dss_precs[] = {"disabled", "primary", "secondary"};
+		const char *dss = dss_precs[thread_ind %
+		    (sizeof(dss_precs)/sizeof(char*))];
+		assert_d_eq(mallctlnametomib("arena.0.dss", mib, &miblen), 0,
+		    "Error in mallctlnametomib()");
+		mib[1] = arena_ind;
+		assert_d_eq(mallctlbymib(mib, miblen, NULL, NULL, (void *)&dss,
+		    sizeof(const char *)), 0, "Error in mallctlbymib()");
+	}
+
+	p = mallocx(1, MALLOCX_ARENA(arena_ind));
+	assert_ptr_not_null(p, "Unexpected mallocx() error");
+	dallocx(p, 0);
+
+	return (NULL);
+}
+
+TEST_BEGIN(test_ALLOCM_ARENA)
+{
+	thd_t thds[NTHREADS];
+	unsigned i;
+
+	for (i = 0; i < NTHREADS; i++) {
+		thd_create(&thds[i], thd_start,
+		    (void *)(uintptr_t)i);
+	}
+
+	for (i = 0; i < NTHREADS; i++)
+		thd_join(thds[i], NULL);
+}
+TEST_END
+
+int
+main(void)
+{
+
+	return (test(
+	    test_ALLOCM_ARENA));
+}