8159370: Add FlagGuard for easier modification of flags for unit tests
Reviewed-by: kbarrett, jwilhelm
/*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#include "precompiled.hpp"
#include "runtime/globals.hpp"
#include "unittest.hpp"
#define TEST_FLAG(f, type, value) \
do { \
ASSERT_TRUE(Flag::find_flag(#f)->is_ ## type()); \
type original_value = f; \
{ \
FLAG_GUARD(f); \
f = value; \
} \
ASSERT_EQ(original_value, f); \
} while (0)
TEST_VM(FlagGuard, bool_flag) {
TEST_FLAG(AlwaysActAsServerClassMachine, bool, true);
}
TEST_VM(FlagGuard, int_flag) {
TEST_FLAG(ParGCArrayScanChunk, int, 1337);
}
TEST_VM(FlagGuard, intx_flag) {
TEST_FLAG(RefDiscoveryPolicy, intx, 1337);
}
TEST_VM(FlagGuard, uint_flag) {
TEST_FLAG(ConcGCThreads, uint, 1337);
}
TEST_VM(FlagGuard, uintx_flag) {
TEST_FLAG(GCTaskTimeStampEntries, uintx, 1337);
}
TEST_VM(FlagGuard, size_t_flag) {
TEST_FLAG(HeapSizePerGCThread, size_t, 1337);
}
TEST_VM(FlagGuard, uint64_t_flag) {
TEST_FLAG(MaxRAM, uint64_t, 1337);
}
TEST_VM(FlagGuard, double_flag) {
TEST_FLAG(CompileThresholdScaling, double, 3.141569);
}
TEST_VM(FlagGuard, ccstr_flag) {
TEST_FLAG(PerfDataSaveFile, ccstr, "/a/random/path");
}