Moderne licensed

Find double-checked locking on a non-volatile field

Recipe IDorg.openrewrite.java.security.search.FindDoubleCheckedLockingArtifactorg.openrewrite.recipe:rewrite-java-security

Finds the classic double-checked locking pattern — an outer if (field == null) guarding a synchronized block that contains an inner if (field == null) { field = new ...(); } — where the field is not declared volatile and the enclosing method is not synchronized. Prior to Java 5 (and still on older JVMs) another thread can observe a partially-constructed object through the outer check, skipping the lock. Prefer a synchronized accessor or the static-holder idiom; if you keep DCL, declare the field volatile.

Single recipeCWE-609RSPEC-S2168Proprietary

Add to your build

Get a download tokenThis recipe is Moderne licensed, so the token must belong to a Moderne customer. It replaces YOUR_DOWNLOAD_TOKEN below.

~/.gradle/gradle.properties

codeGenomeUsername=you@example.com
codeGenomeToken=YOUR_DOWNLOAD_TOKEN

build.gradle.kts

plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("org.openrewrite.java.security.search.FindDoubleCheckedLocking")
}

repositories {
    mavenCentral()
    maven {
        url = uri("https://artifacts.codegenomeproject.org/maven")
        credentials {
            username = providers.gradleProperty("codeGenomeUsername").get()
            password = providers.gradleProperty("codeGenomeToken").get()
        }
    }
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-java-security:3.42.0")
}

Then run

./gradlew rewriteRun

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.java.security.search.FindDoubleCheckedLocking

If the recipe isn’t available locally, install it with:

mod config recipes jar install org.openrewrite.recipe:rewrite-java-security:RELEASE

Data tables

Structured output this recipe can produce.

Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats