Merge "Add new 'explicit GC' policy to StrictMode." (121eb58a) · Commits · e / os / android_frameworks_base

core/java/android/os/StrictMode.java

+51 −2

Original line number	Diff line number	Diff line
		@@ -196,9 +196,14 @@ public final class StrictMode {
		*/
		public static final int DETECT_UNBUFFERED_IO = 0x20; // for ThreadPolicy

		/**
		* @hide
		*/
		public static final int DETECT_EXPLICIT_GC = 0x40; // for ThreadPolicy

		private static final int ALL_THREAD_DETECT_BITS =
		DETECT_DISK_WRITE \| DETECT_DISK_READ \| DETECT_NETWORK \| DETECT_CUSTOM \|
		DETECT_RESOURCE_MISMATCH \| DETECT_UNBUFFERED_IO;
		DETECT_RESOURCE_MISMATCH \| DETECT_UNBUFFERED_IO \| DETECT_EXPLICIT_GC;

		// Byte 2: Process-policy

		@@ -556,6 +561,27 @@ public final class StrictMode {
		return disable(DETECT_DISK_WRITE);
		}

		/**
		* Detect explicit GC requests, i.e. calls to Runtime.gc().
		*
		* @hide
		*/
		public Builder detectExplicitGc() {
		// TODO(b/3400644): Un-hide this for next API update
		// TODO(b/3400644): Call this from detectAll in next API update
		return enable(DETECT_EXPLICIT_GC);
		}

		/**
		* Disable detection of explicit GC requests, i.e. calls to Runtime.gc().
		*
		* @hide
		*/
		public Builder permitExplicitGc() {
		// TODO(b/3400644): Un-hide this for next API update
		return disable(DETECT_EXPLICIT_GC);
		}

		/**
		* Show an annoying dialog to the developer on detected
		* violations, rate-limited to be only a little annoying.
		@@ -1093,6 +1119,15 @@ public final class StrictMode {
		}
		}

		/**
		* @hide
		*/
		private static class StrictModeExplicitGcViolation extends StrictModeViolation {
		StrictModeExplicitGcViolation(int policyMask) {
		super(policyMask, DETECT_EXPLICIT_GC, null);
		}
		}

		/**
		* Returns the bitmask of the current thread's policy.
		*
		@@ -1414,7 +1449,7 @@ public final class StrictMode {
		startHandlingViolationException(e);
		}

		// Part of BlockGuard.Policy; just part of StrictMode:
		// Part of BlockGuard.Policy interface:
		public void onUnbufferedIO() {
		if ((mPolicyMask & DETECT_UNBUFFERED_IO) == 0) {
		return;
		@@ -1457,6 +1492,20 @@ public final class StrictMode {
		startHandlingViolationException(e);
		}

		// Part of BlockGuard.Policy interface:
		public void onExplicitGc() {
		if ((mPolicyMask & DETECT_EXPLICIT_GC) == 0) {
		return;
		}
		if (tooManyViolationsThisLoop()) {
		return;
		}
		BlockGuard.BlockGuardPolicyException e =
		new StrictModeExplicitGcViolation(mPolicyMask);
		e.fillInStackTrace();
		startHandlingViolationException(e);
		}

		public void setPolicyMask(int policyMask) {
		mPolicyMask = policyMask;
		}