Merge "Add a common call when wrapping an app." am: 12e0975963 am: bb6cf84a40 (18f7bcb9) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/os/WrapperInit.java

+2 −0

Original line number	Diff line number	Diff line
		@@ -163,6 +163,8 @@ public class WrapperInit {
		argv = removedArgs;
		}

		// Perform the same initialization that would happen after the Zygote forks.
		Zygote.nativePreApplicationInit();
		RuntimeInit.applicationInit(targetSdkVersion, argv, classLoader);
		}

core/java/com/android/internal/os/Zygote.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -120,6 +120,11 @@ public final class Zygote {
		int[][] rlimits, int mountExternal, String seInfo, String niceName, int[] fdsToClose,
		int[] fdsToIgnore, String instructionSet, String appDataDir);

		/**
		* Called to do any initialization before starting an application.
		*/
		native static void nativePreApplicationInit();

		/**
		* Special method to start the system server process. In addition to the
		* common actions performed in forkAndSpecialize, the pid of the child

core/jni/com_android_internal_os_Zygote.cpp

+16 −6

Original line number	Diff line number	Diff line
		@@ -221,6 +221,14 @@ static void SetRLimits(JNIEnv* env, jobjectArray javaRlimits) {
		// The debug malloc library needs to know whether it's the zygote or a child.
		extern "C" int gMallocLeakZygoteChild;

		static void PreApplicationInit() {
		// The child process sets this to indicate it's not the zygote.
		gMallocLeakZygoteChild = 1;

		// Set the jemalloc decay time to 1.
		mallopt(M_DECAY_TIME, 1);
		}

		static void EnableKeepCapabilities(JNIEnv* env) {
		int rc = prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0);
		if (rc == -1) {
		@@ -517,11 +525,7 @@ static pid_t ForkAndSpecializeCommon(JNIEnv* env, uid_t uid, gid_t gid, jintArra
		pid_t pid = fork();

		if (pid == 0) {
		// The child process.
		gMallocLeakZygoteChild = 1;

		// Set the jemalloc decay time to 1.
		mallopt(M_DECAY_TIME, 1);
		PreApplicationInit();

		// Clean up any descriptors which must be closed immediately
		DetachDescriptors(env, fdsToClose);
		@@ -678,6 +682,10 @@ static pid_t ForkAndSpecializeCommon(JNIEnv* env, uid_t uid, gid_t gid, jintArra

		namespace android {

		static void com_android_internal_os_Zygote_nativePreApplicationInit(JNIEnv*, jclass) {
		PreApplicationInit();
		}

		static jint com_android_internal_os_Zygote_nativeForkAndSpecialize(
		JNIEnv* env, jclass, jint uid, jint gid, jintArray gids,
		jint debug_flags, jobjectArray rlimits,
		@@ -807,7 +815,9 @@ static const JNINativeMethod gMethods[] = {
		{ "nativeAllowFileAcrossFork", "(Ljava/lang/String;)V",
		(void *) com_android_internal_os_Zygote_nativeAllowFileAcrossFork },
		{ "nativeUnmountStorageOnInit", "()V",
		(void *) com_android_internal_os_Zygote_nativeUnmountStorageOnInit }
		(void *) com_android_internal_os_Zygote_nativeUnmountStorageOnInit },
		{ "nativePreApplicationInit", "()V",
		(void *) com_android_internal_os_Zygote_nativePreApplicationInit }
		};

		int register_com_android_internal_os_Zygote(JNIEnv* env) {