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8054823: Add size_t as a valid VM flag type

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Reviewed-by: kvn, vlivanov, sla
This commit is contained in:
Stefan Karlsson 2014-08-11 14:03:06 +02:00
parent dd95f0a0c2
commit 2880629908
12 changed files with 439 additions and 7 deletions
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46
hotspot/src/share/vm/runtime/globals.cpp
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@ -131,6 +131,19 @@ void Flag::set_uint64_t(uint64_t value) {
*((uint64_t*) _addr) = value;
}
bool Flag::is_size_t() const {
return strcmp(_type, "size_t") == 0;
}
size_t Flag::get_size_t() const {
return *((size_t*) _addr);
}
void Flag::set_size_t(size_t value) {
check_writable();
*((size_t*) _addr) = value;
}
bool Flag::is_double() const {
return strcmp(_type, "double") == 0;
}
@ -306,6 +319,9 @@ void Flag::print_on(outputStream* st, bool withComments) {
if (is_uint64_t()) {
st->print("%-16lu", get_uint64_t());
}
if (is_size_t()) {
st->print(SIZE_FORMAT_W(-16), get_size_t());
}
if (is_double()) {
st->print("%-16f", get_double());
}
@ -395,6 +411,8 @@ void Flag::print_as_flag(outputStream* st) {
st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx());
} else if (is_uint64_t()) {
st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t());
} else if (is_size_t()) {
st->print("-XX:%s=" SIZE_FORMAT, _name, get_size_t());
} else if (is_double()) {
st->print("-XX:%s=%f", _name, get_double());
} else if (is_ccstr()) {
@ -723,6 +741,34 @@ void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t va
faddr->set_origin(origin);
}
bool CommandLineFlags::size_tAt(const char* name, size_t len, size_t* value) {
Flag* result = Flag::find_flag(name, len);
if (result == NULL) return false;
if (!result->is_size_t()) return false;
*value = result->get_size_t();
return true;
}
bool CommandLineFlags::size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin) {
Flag* result = Flag::find_flag(name, len);
if (result == NULL) return false;
if (!result->is_size_t()) return false;
size_t old_value = result->get_size_t();
trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin);
result->set_size_t(*value);
*value = old_value;
result->set_origin(origin);
return true;
}
void CommandLineFlagsEx::size_tAtPut(CommandLineFlagWithType flag, size_t value, Flag::Flags origin) {
Flag* faddr = address_of_flag(flag);
guarantee(faddr != NULL && faddr->is_size_t(), "wrong flag type");
trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_size_t(), value, origin);
faddr->set_size_t(value);
faddr->set_origin(origin);
}
bool CommandLineFlags::doubleAt(const char* name, size_t len, double* value) {
Flag* result = Flag::find_flag(name, len);
if (result == NULL) return false;