Implement cache-oblivious support for huge size classes.

test/unit/prng.c

@@ -1,33 +1,34 @@
 #include "test/jemalloc_test.h"
 
-TEST_BEGIN(test_prng_lg_range)
+static void
+test_prng_lg_range(bool atomic)
 {
 	uint64_t sa, sb, ra, rb;
 	unsigned lg_range;
 
 	sa = 42;
-	ra = prng_lg_range(&sa, 64);
+	ra = prng_lg_range(&sa, 64, atomic);
 	sa = 42;
-	rb = prng_lg_range(&sa, 64);
+	rb = prng_lg_range(&sa, 64, atomic);
 	assert_u64_eq(ra, rb,
 	    "Repeated generation should produce repeated results");
 
 	sb = 42;
-	rb = prng_lg_range(&sb, 64);
+	rb = prng_lg_range(&sb, 64, atomic);
 	assert_u64_eq(ra, rb,
 	    "Equivalent generation should produce equivalent results");
 
 	sa = 42;
-	ra = prng_lg_range(&sa, 64);
-	rb = prng_lg_range(&sa, 64);
+	ra = prng_lg_range(&sa, 64, atomic);
+	rb = prng_lg_range(&sa, 64, atomic);
 	assert_u64_ne(ra, rb,
 	    "Full-width results must not immediately repeat");
 
 	sa = 42;
-	ra = prng_lg_range(&sa, 64);
+	ra = prng_lg_range(&sa, 64, atomic);
 	for (lg_range = 63; lg_range > 0; lg_range--) {
 		sb = 42;
-		rb = prng_lg_range(&sb, lg_range);
+		rb = prng_lg_range(&sb, lg_range, atomic);
 		assert_u64_eq((rb & (UINT64_C(0xffffffffffffffff) << lg_range)),
 		    0, "High order bits should be 0, lg_range=%u", lg_range);
 		assert_u64_eq(rb, (ra >> (64 - lg_range)),
@@ -35,9 +36,23 @@ TEST_BEGIN(test_prng_lg_range)
 		    "lg_range=%u", lg_range);
 	}
 }
+
+TEST_BEGIN(test_prng_lg_range_nonatomic)
+{
+
+	test_prng_lg_range(false);
+}
 TEST_END
 
-TEST_BEGIN(test_prng_range)
+TEST_BEGIN(test_prng_lg_range_atomic)
+{
+
+	test_prng_lg_range(true);
+}
+TEST_END
+
+static void
+test_prng_range(bool atomic)
 {
 	uint64_t range;
 #define	MAX_RANGE	10000000
@@ -50,12 +65,25 @@ TEST_BEGIN(test_prng_range)
 
 		s = range;
 		for (rep = 0; rep < NREPS; rep++) {
-			uint64_t r = prng_range(&s, range);
+			uint64_t r = prng_range(&s, range, atomic);
 
 			assert_u64_lt(r, range, "Out of range");
 		}
 	}
 }
+
+TEST_BEGIN(test_prng_range_nonatomic)
+{
+
+	test_prng_range(false);
+}
+TEST_END
+
+TEST_BEGIN(test_prng_range_atomic)
+{
+
+	test_prng_range(true);
+}
 TEST_END
 
 int
@@ -63,6 +91,8 @@ main(void)
 {
 
 	return (test(
-	    test_prng_lg_range,
-	    test_prng_range));
+	    test_prng_lg_range_nonatomic,
+	    test_prng_lg_range_atomic,
+	    test_prng_range_nonatomic,
+	    test_prng_range_atomic));
 }