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Check for multiple processors in OnClassCondition

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See gh-16115
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Jan Thewes 2019-03-06 13:57:04 +01:00 committed by Stephane Nicoll
parent 9da20b7e52
commit a96a79ea45
1 changed files with 19 additions and 0 deletions
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19
spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/OnClassCondition.java
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@ -49,6 +49,25 @@ class OnClassCondition extends FilteringSpringBootCondition {
// Split the work and perform half in a background thread. Using a single
// additional thread seems to offer the best performance. More threads make
// things worse
if (Runtime.getRuntime().availableProcessors() > 1) {
return resolveOutcomesThreaded(autoConfigurationClasses,
autoConfigurationMetadata);
}
else {
return resolveOutcomes(autoConfigurationClasses, autoConfigurationMetadata);
}
}
private ConditionOutcome[] resolveOutcomes(String[] autoConfigurationClasses,
AutoConfigurationMetadata autoConfigurationMetadata) {
OutcomesResolver outcomesResolver = createOutcomesResolver(
autoConfigurationClasses, 0, autoConfigurationClasses.length,
autoConfigurationMetadata);
return outcomesResolver.resolveOutcomes();
}
private ConditionOutcome[] resolveOutcomesThreaded(String[] autoConfigurationClasses,
AutoConfigurationMetadata autoConfigurationMetadata) {
int split = autoConfigurationClasses.length / 2;
OutcomesResolver firstHalfResolver = createOutcomesResolver(
autoConfigurationClasses, 0, split, autoConfigurationMetadata);