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src/share/vm/utilities/globalDefinitions.cpp
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@@ -372,16 +372,14 @@
STATIC_ASSERT(left_n_bits(1|2) == (intptr_t) LP64_ONLY(0xE000000000000000) NOT_LP64(0xE0000000));
#ifndef PRODUCT
// For unit testing only
-class GlobalDefinitions {
-public:
- static void test_globals();
-};
+class TestGlobalDefinitions {
+private:
-void GlobalDefinitions::test_globals() {
+ static void test_clamp_address_in_page() {
intptr_t page_sizes[] = { os::vm_page_size(), 4096, 8192, 65536, 2*1024*1024 };
const int num_page_sizes = sizeof(page_sizes) / sizeof(page_sizes[0]);
for (int i = 0; i < num_page_sizes; i++) {
intptr_t page_size = page_sizes[i];
@@ -401,12 +399,64 @@
// Check that address below page returns start of page
assert(clamp_address_in_page(a_page - 1, a_page, page_size) == a_page, "incorrect");
assert(clamp_address_in_page(a_page - 2*page_size - 1, a_page, page_size) == a_page, "incorrect");
assert(clamp_address_in_page(a_page - 5*page_size - 1, a_page, page_size) == a_page, "incorrect");
}
-}
+ }
+
+ static void test_exact_unit_for_byte_size() {
+ assert(strcmp(exact_unit_for_byte_size(0), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(K - 1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(K), "K") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(K + 1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(M - 1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(M), "M") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(M + 1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(M + K), "K") == 0, "incorrect");
+#ifdef LP64
+ assert(strcmp(exact_unit_for_byte_size(G - 1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(G), "G") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(G + 1), "B") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(G + K), "K") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(G + M), "M") == 0, "incorrect");
+ assert(strcmp(exact_unit_for_byte_size(G + M + K), "K") == 0, "incorrect");
+#endif
+ }
+
+ static void test_byte_size_in_exact_unit() {
+ assert(byte_size_in_exact_unit(0) == 0, "incorrect");
+ assert(byte_size_in_exact_unit(1) == 1, "incorrect");
+ assert(byte_size_in_exact_unit(K - 1) == K - 1, "incorrect");
+ assert(byte_size_in_exact_unit(K) == 1, "incorrect");
+ assert(byte_size_in_exact_unit(K + 1) == K + 1, "incorrect");
+ assert(byte_size_in_exact_unit(M - 1) == M - 1, "incorrect");
+ assert(byte_size_in_exact_unit(M) == 1, "incorrect");
+ assert(byte_size_in_exact_unit(M + 1) == M + 1, "incorrect");
+ assert(byte_size_in_exact_unit(M + K) == K + 1, "incorrect");
+#ifdef LP64
+ assert(byte_size_in_exact_unit(G - 1) == G - 1, "incorrect");
+ assert(byte_size_in_exact_unit(G) == 1, "incorrect");
+ assert(byte_size_in_exact_unit(G + 1) == G + 1, "incorrect");
+ assert(byte_size_in_exact_unit(G + K) == M + 1, "incorrect");
+ assert(byte_size_in_exact_unit(G + M) == K + 1, "incorrect");
+ assert(byte_size_in_exact_unit(G + M + K) == M + K + 1, "incorrect");
+#endif
+ }
+
+ static void test_exact_units() {
+ test_exact_unit_for_byte_size();
+ test_byte_size_in_exact_unit();
+ }
+
+public:
+ static void test() {
+ test_clamp_address_in_page();
+ test_exact_units();
+ }
+};
-void GlobalDefinitions_test() {
- GlobalDefinitions::test_globals();
+void TestGlobalDefinitions_test() {
+ TestGlobalDefinitions::test();
}
#endif // PRODUCT
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