improve handling of negative durations from variable expiration

A zero or negative duration returned from the user's Expiry is treated as an immediate expiration. A negative value was being hashed into a future slot in the second wheel, so it delayed the eviction until that bucket is flushed. This now forces the entry to the current time's bucket so that it gets handled immediately after being added. I suspect that if a Long.MIN_VALUE was used that there might have been an overflow. I didn't investigate that scenario or its impact, and instead focused on more robust handling and tests.
ben-manes · Jan 21, 2025 · 5ff1de7 · 5ff1de7
1 parent 439c561
commit 5ff1de7
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diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -16,7 +16,7 @@ jobs:
             github.com:443
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: actionlint
-        uses: reviewdog/action-actionlint@f3dcc52bc6039e5d736486952379dce3e869e8a2 # v1.63.0
+        uses: reviewdog/action-actionlint@abd537417cf4991e1ba8e21a67b1119f4f53b8e0 # v1.64.1
         env:
           SHELLCHECK_OPTS: -e SC2001 -e SC2035 -e SC2046 -e SC2061 -e SC2086 -e SC2156
         with:

diff --git a/.github/workflows/analysis.yml b/.github/workflows/analysis.yml
@@ -26,7 +26,7 @@ jobs:
       JAVA_VERSION: 23
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -45,7 +45,7 @@ jobs:
       JAVA_VERSION: 23
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -64,7 +64,7 @@ jobs:
       JAVA_VERSION: 23
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
@@ -16,7 +16,7 @@ jobs:
       JAVA_VERSION: ${{ matrix.java }}
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
@@ -52,7 +52,7 @@ jobs:
       JAVA_VERSION: ${{ matrix.java }}
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -166,7 +166,7 @@ jobs:
       JAVA_VERSION: ${{ matrix.java }}
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -209,7 +209,7 @@ jobs:
     if: (github.event_name == 'push') && (github.event.repository.fork == false)
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -287,7 +287,7 @@ jobs:
       checks: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -341,7 +341,7 @@ jobs:
       id-token: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/codacy.yml b/.github/workflows/codacy.yml
@@ -13,7 +13,7 @@ jobs:
     if: github.event.repository.fork == false
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -47,7 +47,7 @@ jobs:
         if: steps.check_files.outputs.files_exists == 'true'
         run: jq -c '.runs |= unique_by({tool, invocations, results})' < results.sarif > codacy.sarif
       - name: Upload result to GitHub Code Scanning
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: steps.check_files.outputs.files_exists == 'true'
         continue-on-error: true
         with:

diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
@@ -28,7 +28,7 @@ jobs:
         language: [ actions, java ]
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -56,12 +56,12 @@ jobs:
           java: ${{ env.JAVA_VERSION }}
           cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
       - name: Initialize CodeQL (Actions)
-        uses: github/codeql-action/init@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/init@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: ${{ matrix.language == 'actions' }}
         with:
           languages: actions
       - name: Initialize CodeQL (Java)
-        uses: github/codeql-action/init@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/init@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: ${{ matrix.language == 'java' }}
         with:
           queries: >
@@ -78,6 +78,6 @@ jobs:
           config: |
             threat-models: local
       - name: Autobuild
-        uses: github/codeql-action/autobuild@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/autobuild@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/analyze@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
diff --git a/.github/workflows/dependency-check.yml b/.github/workflows/dependency-check.yml
@@ -22,7 +22,7 @@ jobs:
       && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false)
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -61,7 +61,7 @@ jobs:
         with:
           files: build/reports/dependency-check-report.sarif
       - name: Upload result to GitHub Code Scanning
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: steps.check_files.outputs.files_exists == 'true'
         with:
           sarif_file: build/reports/dependency-check-report.sarif
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
@@ -10,7 +10,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/dependency-submission-pr-retreive.yml b/.github/workflows/dependency-submission-pr-retreive.yml
@@ -16,7 +16,7 @@ jobs:
       contents: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/dependency-submission-pr-submit.yml b/.github/workflows/dependency-submission-pr-submit.yml
@@ -13,7 +13,7 @@ jobs:
       contents: read
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/dependency-submission.yml b/.github/workflows/dependency-submission.yml
@@ -13,7 +13,7 @@ jobs:
       contents: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/devskim.yml b/.github/workflows/devskim.yml
@@ -19,7 +19,7 @@ jobs:
       security-events: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -31,6 +31,6 @@ jobs:
       - name: Run DevSkim scanner
         uses: microsoft/DevSkim-Action@914fa647b406c387000300b2f09bb28691be2b6d # v1.0.14
       - name: Upload DevSkim scan results to GitHub Security tab
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         with:
           sarif_file: devskim-results.sarif
diff --git a/.github/workflows/examples.yml b/.github/workflows/examples.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/gitleaks.yml b/.github/workflows/gitleaks.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/gradle-wrapper-validation.yml b/.github/workflows/gradle-wrapper-validation.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/qodana.yml b/.github/workflows/qodana.yml
@@ -19,7 +19,7 @@ jobs:
       && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.fork == false)
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -70,6 +70,6 @@ jobs:
           upload-result: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
       - name: Upload SARIF file for GitHub Advanced Security Dashboard
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         with:
           sarif_file: ${{ runner.temp }}/qodana/results/qodana.sarif.json
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
       id-token: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: audit

diff --git a/.github/workflows/scorecards-analysis.yml b/.github/workflows/scorecards-analysis.yml
@@ -20,7 +20,7 @@ jobs:
     if: github.event.repository.fork == false
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -58,6 +58,6 @@ jobs:
           path: results.sarif
           retention-days: 5
       - name: Upload to code-scanning
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
@@ -31,7 +31,7 @@ jobs:
         with:
           files: results.sarif
       - name: Upload SARIF file for GitHub Advanced Security Dashboard
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: steps.check_files.outputs.files_exists == 'true'
         continue-on-error: true
         with:

diff --git a/.github/workflows/snyk.yml b/.github/workflows/snyk.yml
@@ -42,7 +42,7 @@ jobs:
         with:
           files: snyk.sarif
       - name: Upload result to GitHub Code Scanning
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: steps.check_files.outputs.files_exists == 'true'
         with:
           sarif_file: snyk.sarif

diff --git a/.github/workflows/spelling.yml b/.github/workflows/spelling.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block

diff --git a/.github/workflows/trivy.yml b/.github/workflows/trivy.yml
@@ -12,7 +12,7 @@ jobs:
       security-events: write
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c95a14d0e5bab51a9f56296a4eb0e416910cd350 # v2.10.3
+        uses: step-security/harden-runner@cb605e52c26070c328afc4562f0b4ada7618a84e # v2.10.4
         with:
           disable-sudo: true
           egress-policy: block
@@ -37,7 +37,7 @@ jobs:
         with:
           files: results.sarif
       - name: Upload result to GitHub Code Scanning
-        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
+        uses: github/codeql-action/upload-sarif@d68b2d4edb4189fd2a5366ac14e72027bd4b37dd # v3.28.2
         if: steps.check_files.outputs.files_exists == 'true'
         with:
             sarif_file: results.sarif
diff --git a/caffeine/src/main/java/com/github/benmanes/caffeine/cache/BoundedLocalCache.java b/caffeine/src/main/java/com/github/benmanes/caffeine/cache/BoundedLocalCache.java
@@ -1430,7 +1430,7 @@ boolean skipReadBuffer() {
   long expireAfterCreate(@Nullable K key, @Nullable V value,
       Expiry<? super K, ? super V> expiry, long now) {
     if (expiresVariable() && (key != null) && (value != null)) {
-      long duration = expiry.expireAfterCreate(key, value, now);
+      long duration = Math.max(0L, expiry.expireAfterCreate(key, value, now));
       return isAsync ? (now + duration) : (now + Math.min(duration, MAXIMUM_EXPIRY));
     }
     return 0L;
@@ -1450,7 +1450,7 @@ long expireAfterUpdate(Node<K, V> node, @Nullable K key,
       @Nullable V value, Expiry<? super K, ? super V> expiry, long now) {
     if (expiresVariable() && (key != null) && (value != null)) {
       long currentDuration = Math.max(1, node.getVariableTime() - now);
-      long duration = expiry.expireAfterUpdate(key, value, now, currentDuration);
+      long duration = Math.max(0L, expiry.expireAfterUpdate(key, value, now, currentDuration));
       return isAsync ? (now + duration) : (now + Math.min(duration, MAXIMUM_EXPIRY));
     }
     return 0L;
@@ -1469,8 +1469,8 @@ long expireAfterUpdate(Node<K, V> node, @Nullable K key,
   long expireAfterRead(Node<K, V> node, @Nullable K key,
       @Nullable V value, Expiry<K, V> expiry, long now) {
     if (expiresVariable() && (key != null) && (value != null)) {
-      long currentDuration = Math.max(1, node.getVariableTime() - now);
-      long duration = expiry.expireAfterRead(key, value, now, currentDuration);
+      long currentDuration = Math.max(0L, node.getVariableTime() - now);
+      long duration = Math.min(0L, expiry.expireAfterRead(key, value, now, currentDuration));
       return isAsync ? (now + duration) : (now + Math.min(duration, MAXIMUM_EXPIRY));
     }
     return 0L;
@@ -1498,7 +1498,7 @@ void tryExpireAfterRead(Node<K, V> node, @Nullable K key,
       return;
     }
 
-    long duration = expiry.expireAfterRead(key, value, now, currentDuration);
+    long duration = Math.max(0L, expiry.expireAfterRead(key, value, now, currentDuration));
     if (duration != currentDuration) {
       long expirationTime = isAsync ? (now + duration) : (now + Math.min(duration, MAXIMUM_EXPIRY));
       node.casVariableTime(variableTime, expirationTime);

diff --git a/caffeine/src/main/java/com/github/benmanes/caffeine/cache/TimerWheel.java b/caffeine/src/main/java/com/github/benmanes/caffeine/cache/TimerWheel.java
@@ -205,7 +205,11 @@ public void deschedule(Node<K, V> node) {
    */
   @SuppressWarnings("Varifier")
   Node<K, V> findBucket(long time) {
-    long duration = time - nanos;
+    long duration = Math.max(0L, time - nanos);
+    if (duration <= 0L) {
+      time = nanos;
+    }
+
     int length = wheel.length - 1;
     for (int i = 0; i < length; i++) {
       if (duration < SPANS[i + 1]) {