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8221882: Use fiber-friendly java.util.concurrent.locks in JSSE

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Reviewed-by: alanb, dfuchs
This commit is contained in:
Xue-Lei Andrew Fan 2019-04-05 11:28:23 -07:00
parent 6d617481d4
commit 8263b618ba
22 changed files with 1672 additions and 1020 deletions
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13
src/java.base/share/classes/sun/security/ssl/X509TrustManagerImpl.java
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@ -29,6 +29,7 @@ import java.net.Socket;
import java.security.*;
import java.security.cert.*;
import java.util.*;
import java.util.concurrent.locks.ReentrantLock;
import javax.net.ssl.*;
import sun.security.util.AnchorCertificates;
import sun.security.util.HostnameChecker;
@ -63,6 +64,8 @@ final class X509TrustManagerImpl extends X509ExtendedTrustManager
// the different extension checks. They are initialized lazily on demand.
private volatile Validator clientValidator, serverValidator;
private final ReentrantLock validatorLock = new ReentrantLock();
X509TrustManagerImpl(String validatorType,
Collection<X509Certificate> trustedCerts) {
@ -157,12 +160,15 @@ final class X509TrustManagerImpl extends X509ExtendedTrustManager
if (isClient) {
v = clientValidator;
if (v == null) {
synchronized (this) {
validatorLock.lock();
try {
v = clientValidator;
if (v == null) {
v = getValidator(Validator.VAR_TLS_CLIENT);
clientValidator = v;
}
} finally {
validatorLock.unlock();
}
}
} else {
@ -170,12 +176,15 @@ final class X509TrustManagerImpl extends X509ExtendedTrustManager
// (guaranteed under the new Tiger memory model)
v = serverValidator;
if (v == null) {
synchronized (this) {
validatorLock.lock();
try {
v = serverValidator;
if (v == null) {
v = getValidator(Validator.VAR_TLS_SERVER);
serverValidator = v;
}
} finally {
validatorLock.unlock();
}
}
}