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Merge "StrictMode: check max-offenses-per-loop earlier, before allocations" into gingerbread

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This commit is contained in:
Brad Fitzpatrick
2010-10-11 11:56:40 -07:00
committed by Android (Google) Code Review
parent c8511af04a 191cdf023c
commit 5804b4fd47
1 changed files with 25 additions and 8 deletions
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33
core/java/android/os/StrictMode.java
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@@ -104,6 +104,10 @@ public final class StrictMode {
// Only show an annoying dialog at most every 30 seconds
private static final long MIN_DIALOG_INTERVAL_MS = 30000;
// How many offending stacks to keep track of (and time) per loop
// of the Looper.
private static final int MAX_OFFENSES_PER_LOOP = 10;
// Thread-policy:
/**
@@ -680,6 +684,17 @@ public final class StrictMode {
}
}
private static final ThreadLocal<ArrayList<ViolationInfo>> violationsBeingTimed =
new ThreadLocal<ArrayList<ViolationInfo>>() {
@Override protected ArrayList<ViolationInfo> initialValue() {
return new ArrayList<ViolationInfo>();
}
};
private static boolean tooManyViolationsThisLoop() {
return violationsBeingTimed.get().size() >= MAX_OFFENSES_PER_LOOP;
}
private static class AndroidBlockGuardPolicy implements BlockGuard.Policy {
private int mPolicyMask;
@@ -707,6 +722,9 @@ public final class StrictMode {
if ((mPolicyMask & DETECT_DISK_WRITE) == 0) {
return;
}
if (tooManyViolationsThisLoop()) {
return;
}
BlockGuard.BlockGuardPolicyException e = new StrictModeDiskWriteViolation(mPolicyMask);
e.fillInStackTrace();
startHandlingViolationException(e);
@@ -717,6 +735,9 @@ public final class StrictMode {
if ((mPolicyMask & DETECT_DISK_READ) == 0) {
return;
}
if (tooManyViolationsThisLoop()) {
return;
}
BlockGuard.BlockGuardPolicyException e = new StrictModeDiskReadViolation(mPolicyMask);
e.fillInStackTrace();
startHandlingViolationException(e);
@@ -727,6 +748,9 @@ public final class StrictMode {
if ((mPolicyMask & DETECT_NETWORK) == 0) {
return;
}
if (tooManyViolationsThisLoop()) {
return;
}
BlockGuard.BlockGuardPolicyException e = new StrictModeNetworkViolation(mPolicyMask);
e.fillInStackTrace();
startHandlingViolationException(e);
@@ -747,13 +771,6 @@ public final class StrictMode {
handleViolationWithTimingAttempt(info);
}
private static final ThreadLocal<ArrayList<ViolationInfo>> violationsBeingTimed =
new ThreadLocal<ArrayList<ViolationInfo>>() {
@Override protected ArrayList<ViolationInfo> initialValue() {
return new ArrayList<ViolationInfo>();
}
};
// Attempts to fill in the provided ViolationInfo's
// durationMillis field if this thread has a Looper we can use
// to measure with. We measure from the time of violation
@@ -780,7 +797,7 @@ public final class StrictMode {
MessageQueue queue = Looper.myQueue();
final ArrayList<ViolationInfo> records = violationsBeingTimed.get();
if (records.size() >= 10) {
if (records.size() >= MAX_OFFENSES_PER_LOOP) {
// Not worth measuring. Too many offenses in one loop.
return;
}