archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 14:54:52 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8259065: Optimize MessageDigest.getInstance

Browse source 
Reviewed-by: valeriep
This commit is contained in:
Claes Redestad 2021-01-08 09:20:42 +00:00
parent 712014c595
commit fc1d2a1e8e
4 changed files with 259 additions and 137 deletions
Download patch file Download diff file Expand all files Collapse all files

99
src/java.base/share/classes/sun/security/jca/ProviderConfig.java
View file

@ -160,66 +160,73 @@ final class ProviderConfig {
* Get the provider object. Loads the provider if it is not already loaded.
*/
@SuppressWarnings("deprecation")
synchronized Provider getProvider() {
Provider getProvider() {
// volatile variable load
Provider p = provider;
if (p != null) {
return p;
}
if (shouldLoad() == false) {
return null;
}
// DCL
synchronized (this) {
p = provider;
if (p != null) {
return p;
}
if (shouldLoad() == false) {
return null;
}
// Create providers which are in java.base directly
if (provName.equals("SUN") || provName.equals("sun.security.provider.Sun")) {
p = new sun.security.provider.Sun();
} else if (provName.equals("SunRsaSign") || provName.equals("sun.security.rsa.SunRsaSign")) {
p = new sun.security.rsa.SunRsaSign();
} else if (provName.equals("SunJCE") || provName.equals("com.sun.crypto.provider.SunJCE")) {
p = new com.sun.crypto.provider.SunJCE();
} else if (provName.equals("SunJSSE")) {
p = new sun.security.ssl.SunJSSE();
} else if (provName.equals("Apple") || provName.equals("apple.security.AppleProvider")) {
// need to use reflection since this class only exists on MacOsx
p = AccessController.doPrivileged(new PrivilegedAction<Provider>() {
public Provider run() {
try {
Class<?> c = Class.forName("apple.security.AppleProvider");
if (Provider.class.isAssignableFrom(c)) {
@SuppressWarnings("deprecation")
Object tmp = c.newInstance();
return (Provider) tmp;
} else {
// Create providers which are in java.base directly
if (provName.equals("SUN") || provName.equals("sun.security.provider.Sun")) {
p = new sun.security.provider.Sun();
} else if (provName.equals("SunRsaSign") || provName.equals("sun.security.rsa.SunRsaSign")) {
p = new sun.security.rsa.SunRsaSign();
} else if (provName.equals("SunJCE") || provName.equals("com.sun.crypto.provider.SunJCE")) {
p = new com.sun.crypto.provider.SunJCE();
} else if (provName.equals("SunJSSE")) {
p = new sun.security.ssl.SunJSSE();
} else if (provName.equals("Apple") || provName.equals("apple.security.AppleProvider")) {
// need to use reflection since this class only exists on MacOsx
p = AccessController.doPrivileged(new PrivilegedAction<Provider>() {
public Provider run() {
try {
Class<?> c = Class.forName("apple.security.AppleProvider");
if (Provider.class.isAssignableFrom(c)) {
@SuppressWarnings("deprecation")
Object tmp = c.newInstance();
return (Provider) tmp;
} else {
return null;
}
} catch (Exception ex) {
if (debug != null) {
debug.println("Error loading provider Apple");
ex.printStackTrace();
}
return null;
}
} catch (Exception ex) {
if (debug != null) {
debug.println("Error loading provider Apple");
ex.printStackTrace();
}
});
} else {
if (isLoading) {
// because this method is synchronized, this can only
// happen if there is recursion.
if (debug != null) {
debug.println("Recursion loading provider: " + this);
new Exception("Call trace").printStackTrace();
}
return null;
}
}
});
} else {
if (isLoading) {
// because this method is synchronized, this can only
// happen if there is recursion.
if (debug != null) {
debug.println("Recursion loading provider: " + this);
new Exception("Call trace").printStackTrace();
try {
isLoading = true;
tries++;
p = doLoadProvider();
} finally {
isLoading = false;
}
return null;
}
try {
isLoading = true;
tries++;
p = doLoadProvider();
} finally {
isLoading = false;
}
provider = p;
}
provider = p;
return p;
}