LineageOS/android_packages_modules_Connectivity
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Don't use local ref for cached jclass reference in JNI code

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Change-Id: Id45b2acb358a819f2fd332e99f3a095f6fc7299b
related-to-bug: 4241138
This commit is contained in:
Brian Carlstrom
2011-04-05 22:44:45 -07:00
parent d2dc2511ec
commit 587274ea3a
1 changed files with 11 additions and 13 deletions
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24
core/jni/android_net_NetUtils.cpp
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@@ -55,7 +55,6 @@ namespace android {
* to look them up every time.
*/
static struct fieldIds {
jclass dhcpInfoInternalClass;
jmethodID constructorId;
jfieldID ipaddress;
jfieldID gateway;
@@ -163,7 +162,7 @@ static jboolean android_net_utils_runDhcp(JNIEnv* env, jobject clazz, jstring if
result = ::dhcp_do_request(nameStr, ipaddr, gateway, &prefixLength,
dns1, dns2, server, &lease);
env->ReleaseStringUTFChars(ifname, nameStr);
if (result == 0 && dhcpInfoInternalFieldIds.dhcpInfoInternalClass != NULL) {
if (result == 0) {
env->SetObjectField(info, dhcpInfoInternalFieldIds.ipaddress, env->NewStringUTF(ipaddr));
env->SetObjectField(info, dhcpInfoInternalFieldIds.gateway, env->NewStringUTF(gateway));
env->SetIntField(info, dhcpInfoInternalFieldIds.prefixLength, prefixLength);
@@ -229,17 +228,16 @@ int register_android_net_NetworkUtils(JNIEnv* env)
jclass netutils = env->FindClass(NETUTILS_PKG_NAME);
LOG_FATAL_IF(netutils == NULL, "Unable to find class " NETUTILS_PKG_NAME);
dhcpInfoInternalFieldIds.dhcpInfoInternalClass = env->FindClass("android/net/DhcpInfoInternal");
if (dhcpInfoInternalFieldIds.dhcpInfoInternalClass != NULL) {
dhcpInfoInternalFieldIds.constructorId = env->GetMethodID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "<init>", "()V");
dhcpInfoInternalFieldIds.ipaddress = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "ipAddress", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.gateway = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "gateway", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.prefixLength = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "prefixLength", "I");
dhcpInfoInternalFieldIds.dns1 = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "dns1", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.dns2 = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "dns2", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.serverAddress = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "serverAddress", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.leaseDuration = env->GetFieldID(dhcpInfoInternalFieldIds.dhcpInfoInternalClass, "leaseDuration", "I");
}
jclass dhcpInfoInternalClass = env->FindClass("android/net/DhcpInfoInternal");
LOG_FATAL_IF(dhcpInfoInternalClass == NULL, "Unable to find class android/net/DhcpInfoInternal");
dhcpInfoInternalFieldIds.constructorId = env->GetMethodID(dhcpInfoInternalClass, "<init>", "()V");
dhcpInfoInternalFieldIds.ipaddress = env->GetFieldID(dhcpInfoInternalClass, "ipAddress", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.gateway = env->GetFieldID(dhcpInfoInternalClass, "gateway", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.prefixLength = env->GetFieldID(dhcpInfoInternalClass, "prefixLength", "I");
dhcpInfoInternalFieldIds.dns1 = env->GetFieldID(dhcpInfoInternalClass, "dns1", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.dns2 = env->GetFieldID(dhcpInfoInternalClass, "dns2", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.serverAddress = env->GetFieldID(dhcpInfoInternalClass, "serverAddress", "Ljava/lang/String;");
dhcpInfoInternalFieldIds.leaseDuration = env->GetFieldID(dhcpInfoInternalClass, "leaseDuration", "I");
return AndroidRuntime::registerNativeMethods(env,
NETUTILS_PKG_NAME, gNetworkUtilMethods, NELEM(gNetworkUtilMethods));