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Support waiting on non-exist prop

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LoveSy 2024-05-18 13:55:33 +08:00 committed by GitHub
parent 2afcdc64a0
commit 941a363c5a
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1 changed files with 8 additions and 5 deletions
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13
native/src/core/resetprop/resetprop.cpp
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@ -226,20 +226,23 @@ template<class StringType>
static StringType wait_prop(const char *name, const char *old_value) { static StringType wait_prop(const char *name, const char *old_value) {
if (!check_legal_property_name(name)) if (!check_legal_property_name(name))
return {}; return {};
auto pi = system_property_find(name);
if (!pi) { const prop_info *pi;
LOGD("resetprop: prop [%s] does not exist\n", name); auto serial = __system_property_area_serial();
return {}; while (!(pi = system_property_find(name))) {
LOGD("resetprop: waiting for prop [%s] to exist\n", name);
system_property_wait(nullptr, serial, &serial, nullptr);
} }
prop_to_string<StringType> cb; prop_to_string<StringType> cb;
read_prop_with_cb(pi, &cb); read_prop_with_cb(pi, &cb);
if (old_value == nullptr || cb.val == old_value) { while (old_value == nullptr || cb.val == old_value) {
LOGD("resetprop: waiting for prop [%s]\n", name); LOGD("resetprop: waiting for prop [%s]\n", name);
uint32_t new_serial; uint32_t new_serial;
system_property_wait(pi, cb.serial, &new_serial, nullptr); system_property_wait(pi, cb.serial, &new_serial, nullptr);
read_prop_with_cb(pi, &cb); read_prop_with_cb(pi, &cb);
if (old_value == nullptr) break;
} }
LOGD("resetprop: get prop [%s]: [%s]\n", name, cb.val.c_str()); LOGD("resetprop: get prop [%s]: [%s]\n", name, cb.val.c_str());