// Implementation of "setflag" command
static jint set_flag(AttachOperation* op, outputStream* out) {
const char* name = NULL;
if ((name = op->arg(0)) == NULL) {
out->print_cr("flag name is missing");
return JNI_ERR;
}
Flag* f = Flag::find_flag((char*)name, strlen(name));
if (f && f->is_external() && f->is_writeable()) {
if (f->is_bool()) {
return set_bool_flag(name, op, out);
} else if (f->is_intx()) {
return set_intx_flag(name, op, out);
} else if (f->is_uintx()) {
return set_uintx_flag(name, op, out);
} else if (f->is_uint64_t()) {
return set_uint64_t_flag(name, op, out);
} else if (f->is_ccstr()) {
return set_ccstr_flag(name, op, out);
} else {
ShouldNotReachHere();
return JNI_ERR;
}
} else {
return AttachListener::pd_set_flag(op, out);
}
}
// a writeable flag setter accepting 'jvalue' values
int WriteableFlags::set_flag_from_jvalue(Flag* f, const void* value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
jvalue new_value = *(jvalue*)value;
if (f->is_bool()) {
bool bvalue = (new_value.z == JNI_TRUE ? true : false);
return set_bool_flag(f->_name, bvalue, origin, err_msg);
} else if (f->is_intx()) {
intx ivalue = (intx)new_value.j;
return set_intx_flag(f->_name, ivalue, origin, err_msg);
} else if (f->is_uintx()) {
uintx uvalue = (uintx)new_value.j;
return set_uintx_flag(f->_name, uvalue, origin, err_msg);
} else if (f->is_uint64_t()) {
uint64_t uvalue = (uint64_t)new_value.j;
return set_uint64_t_flag(f->_name, uvalue, origin, err_msg);
} else if (f->is_size_t()) {
size_t svalue = (size_t)new_value.j;
return set_size_t_flag(f->_name, svalue, origin, err_msg);
} else if (f->is_ccstr()) {
oop str = JNIHandles::resolve_external_guard(new_value.l);
if (str == NULL) {
err_msg.print("flag value is missing");
return MISSING_VALUE;
}
ccstr svalue = java_lang_String::as_utf8_string(str);
int ret = WriteableFlags::set_ccstr_flag(f->_name, svalue, origin, err_msg);
if (ret != SUCCESS) {
FREE_C_HEAP_ARRAY(char, svalue);
}
return ret;
} else {
ShouldNotReachHere();
}
return ERR_OTHER;
}
// set a uintx global flag
int WriteableFlags::set_uintx_flag(const char* name, const char* arg, Flag::Flags origin, FormatBuffer<80>& err_msg) {
uintx value;
if (sscanf(arg, UINTX_FORMAT, &value)) {
return set_uintx_flag(name, value, origin, err_msg);
}
err_msg.print("flag value must be an unsigned integer");
return WRONG_FORMAT;
}
// a writeable flag setter accepting 'char *' values
int WriteableFlags::set_flag_from_char(Flag* f, const void* value, Flag::Flags origin, FormatBuffer<80>& err_msg) {
char* flag_value = *(char**)value;
if (flag_value == NULL) {
err_msg.print("flag value is missing");
return MISSING_VALUE;
}
if (f->is_bool()) {
return set_bool_flag(f->_name, flag_value, origin, err_msg);
} else if (f->is_intx()) {
return set_intx_flag(f->_name, flag_value, origin, err_msg);
} else if (f->is_uintx()) {
return set_uintx_flag(f->_name, flag_value, origin, err_msg);
} else if (f->is_uint64_t()) {
return set_uint64_t_flag(f->_name, flag_value, origin, err_msg);
} else if (f->is_size_t()) {
return set_size_t_flag(f->_name, flag_value, origin, err_msg);
} else if (f->is_ccstr()) {
return set_ccstr_flag(f->_name, flag_value, origin, err_msg);
} else {
ShouldNotReachHere();
}
return ERR_OTHER;
}
