java.lang.ClassValue.ClassValueMap Java Examples

The following examples show how to use java.lang.ClassValue.ClassValueMap. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ClassValue.java    From jdk8u-dev-jdk with GNU General Public License v2.0 7 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #2
Source File: ClassValue.java    From jdk-1.7-annotated with Apache License 2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #3
Source File: ClassValue.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #4
Source File: ClassValue.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #5
Source File: ClassValue.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #6
Source File: ClassValue.java    From Java8CN with Apache License 2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #7
Source File: ClassValue.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #8
Source File: ClassValue.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #9
Source File: ClassValue.java    From jdk-1.7-annotated with Apache License 2.0 6 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #10
Source File: ClassValue.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #11
Source File: ClassValue.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #12
Source File: ClassValue.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #13
Source File: ClassValue.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #14
Source File: ClassValue.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
/** Called when the fast path of get fails, and cache reprobe also fails.
 */
private T getFromHashMap(Class<?> type) {
    // The fail-safe recovery is to fall back to the underlying classValueMap.
    ClassValueMap map = getMap(type);
    for (;;) {
        Entry<T> e = map.startEntry(this);
        if (!e.isPromise())
            return e.value();
        try {
            // Try to make a real entry for the promised version.
            e = makeEntry(e.version(), computeValue(type));
        } finally {
            // Whether computeValue throws or returns normally,
            // be sure to remove the empty entry.
            e = map.finishEntry(this, e);
        }
        if (e != null)
            return e.value();
        // else try again, in case a racing thread called remove (so e == null)
    }
}
Example #15
Source File: ClassValue.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #16
Source File: ClassValue.java    From Java8CN with Apache License 2.0 5 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #17
Source File: ClassValue.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #18
Source File: ClassValue.java    From Java8CN with Apache License 2.0 5 votes vote down vote up 
private static ClassValueMap initializeMap(Class<?> type) {
ClassValueMap map;
synchronized (CRITICAL_SECTION) {  // private object to avoid deadlocks
    // happens about once per type
    if ((map = type.classValueMap) == null)
        type.classValueMap = map = new ClassValueMap(type);
}
    return map;
}
Example #19
Source File: ClassValue.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #20
Source File: ClassValue.java    From jdk8u-dev-jdk with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #21
Source File: ClassValue.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #22
Source File: ClassValue.java    From Java8CN with Apache License 2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #23
Source File: ClassValue.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #24
Source File: ClassValue.java    From jdk-1.7-annotated with Apache License 2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #25
Source File: ClassValue.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #26
Source File: ClassValue.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the cache, if it exists, else a dummy empty cache. */
private static Entry<?>[] getCacheCarefully(Class<?> type) {
    // racing type.classValueMap{.cacheArray} : null => new Entry[X] <=> new Entry[Y]
    ClassValueMap map = type.classValueMap;
    if (map == null)  return EMPTY_CACHE;
    Entry<?>[] cache = map.getCache();
    return cache;
    // invariant:  returned value is safe to dereference and check for an Entry
}
Example #27
Source File: ClassValue.java    From openjdk-jdk8u with GNU General Public License v2.0 5 votes vote down vote up 
/** Return the backing map associated with this type. */
private static ClassValueMap getMap(Class<?> type) {
    // racing type.classValueMap : null (blank) => unique ClassValueMap
    // if a null is observed, a map is created (lazily, synchronously, uniquely)
    // all further access to that map is synchronized
    ClassValueMap map = type.classValueMap;
    if (map != null)  return map;
    return initializeMap(type);
}
Example #28
Source File: ClassValue.java    From jdk8u-dev-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private static ClassValueMap initializeMap(Class<?> type) {
ClassValueMap map;
synchronized (CRITICAL_SECTION) {  // private object to avoid deadlocks
    // happens about once per type
    if ((map = type.classValueMap) == null)
        type.classValueMap = map = new ClassValueMap(type);
}
    return map;
}
Example #29
Source File: ClassValue.java    From JDKSourceCode1.8 with MIT License 5 votes vote down vote up 
private static ClassValueMap initializeMap(Class<?> type) {
ClassValueMap map;
synchronized (CRITICAL_SECTION) {  // private object to avoid deadlocks
    // happens about once per type
    if ((map = type.classValueMap) == null)
        type.classValueMap = map = new ClassValueMap(type);
}
    return map;
}
Example #30
Source File: ClassValue.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
private static ClassValueMap initializeMap(Class<?> type) {
ClassValueMap map;
synchronized (CRITICAL_SECTION) {  // private object to avoid deadlocks
    // happens about once per type
    if ((map = type.classValueMap) == null)
        type.classValueMap = map = new ClassValueMap(type);
}
    return map;
}