1876 |
|
return new AdaptedCallable<T>(callable); |
1877 |
|
} |
1878 |
|
|
1879 |
< |
|
1880 |
< |
// Unsafe mechanics for jsr166y 3rd party package. |
1881 |
< |
private static sun.misc.Unsafe getUnsafe() { |
1882 |
< |
try { |
1883 |
< |
return sun.misc.Unsafe.getUnsafe(); |
1884 |
< |
} catch (SecurityException se) { |
1885 |
< |
try { |
1886 |
< |
return java.security.AccessController.doPrivileged |
1887 |
< |
(new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() { |
1888 |
< |
public sun.misc.Unsafe run() throws Exception { |
1889 |
< |
return getUnsafeByReflection(); |
1890 |
< |
}}); |
1891 |
< |
} catch (java.security.PrivilegedActionException e) { |
1892 |
< |
throw new RuntimeException("Could not initialize intrinsics", |
1893 |
< |
e.getCause()); |
1894 |
< |
} |
1895 |
< |
} |
1896 |
< |
} |
1897 |
< |
|
1898 |
< |
private static sun.misc.Unsafe getUnsafeByReflection() |
1899 |
< |
throws NoSuchFieldException, IllegalAccessException { |
1900 |
< |
java.lang.reflect.Field f = |
1901 |
< |
sun.misc.Unsafe.class.getDeclaredField("theUnsafe"); |
1902 |
< |
f.setAccessible(true); |
1903 |
< |
return (sun.misc.Unsafe) f.get(null); |
1904 |
< |
} |
1905 |
< |
|
1906 |
< |
private static long fieldOffset(String fieldName, Class<?> klazz) { |
1907 |
< |
try { |
1908 |
< |
return UNSAFE.objectFieldOffset(klazz.getDeclaredField(fieldName)); |
1909 |
< |
} catch (NoSuchFieldException e) { |
1910 |
< |
// Convert Exception to Error |
1911 |
< |
NoSuchFieldError error = new NoSuchFieldError(fieldName); |
1912 |
< |
error.initCause(e); |
1913 |
< |
throw error; |
1914 |
< |
} |
1915 |
< |
} |
1879 |
> |
// Unsafe mechanics |
1880 |
|
|
1881 |
|
private static final sun.misc.Unsafe UNSAFE = getUnsafe(); |
1882 |
|
private static final long eventCountOffset = |
1883 |
< |
fieldOffset("eventCount", ForkJoinPool.class); |
1883 |
> |
objectFieldOffset("eventCount", ForkJoinPool.class); |
1884 |
|
private static final long workerCountsOffset = |
1885 |
< |
fieldOffset("workerCounts", ForkJoinPool.class); |
1885 |
> |
objectFieldOffset("workerCounts", ForkJoinPool.class); |
1886 |
|
private static final long runControlOffset = |
1887 |
< |
fieldOffset("runControl", ForkJoinPool.class); |
1887 |
> |
objectFieldOffset("runControl", ForkJoinPool.class); |
1888 |
|
private static final long syncStackOffset = |
1889 |
< |
fieldOffset("syncStack",ForkJoinPool.class); |
1889 |
> |
objectFieldOffset("syncStack",ForkJoinPool.class); |
1890 |
|
private static final long spareStackOffset = |
1891 |
< |
fieldOffset("spareStack", ForkJoinPool.class); |
1891 |
> |
objectFieldOffset("spareStack", ForkJoinPool.class); |
1892 |
|
|
1893 |
|
private boolean casEventCount(long cmp, long val) { |
1894 |
|
return UNSAFE.compareAndSwapLong(this, eventCountOffset, cmp, val); |
1905 |
|
private boolean casBarrierStack(WaitQueueNode cmp, WaitQueueNode val) { |
1906 |
|
return UNSAFE.compareAndSwapObject(this, syncStackOffset, cmp, val); |
1907 |
|
} |
1908 |
+ |
|
1909 |
+ |
private static long objectFieldOffset(String field, Class<?> klazz) { |
1910 |
+ |
try { |
1911 |
+ |
return UNSAFE.objectFieldOffset(klazz.getDeclaredField(field)); |
1912 |
+ |
} catch (NoSuchFieldException e) { |
1913 |
+ |
// Convert Exception to corresponding Error |
1914 |
+ |
NoSuchFieldError error = new NoSuchFieldError(field); |
1915 |
+ |
error.initCause(e); |
1916 |
+ |
throw error; |
1917 |
+ |
} |
1918 |
+ |
} |
1919 |
+ |
|
1920 |
+ |
/** |
1921 |
+ |
* Returns a sun.misc.Unsafe. Suitable for use in a 3rd party package. |
1922 |
+ |
* Replace with a simple call to Unsafe.getUnsafe when integrating |
1923 |
+ |
* into a jdk. |
1924 |
+ |
* |
1925 |
+ |
* @return a sun.misc.Unsafe |
1926 |
+ |
*/ |
1927 |
+ |
private static sun.misc.Unsafe getUnsafe() { |
1928 |
+ |
try { |
1929 |
+ |
return sun.misc.Unsafe.getUnsafe(); |
1930 |
+ |
} catch (SecurityException se) { |
1931 |
+ |
try { |
1932 |
+ |
return java.security.AccessController.doPrivileged |
1933 |
+ |
(new java.security |
1934 |
+ |
.PrivilegedExceptionAction<sun.misc.Unsafe>() { |
1935 |
+ |
public sun.misc.Unsafe run() throws Exception { |
1936 |
+ |
java.lang.reflect.Field f = sun.misc |
1937 |
+ |
.Unsafe.class.getDeclaredField("theUnsafe"); |
1938 |
+ |
f.setAccessible(true); |
1939 |
+ |
return (sun.misc.Unsafe) f.get(null); |
1940 |
+ |
}}); |
1941 |
+ |
} catch (java.security.PrivilegedActionException e) { |
1942 |
+ |
throw new RuntimeException("Could not initialize intrinsics", |
1943 |
+ |
e.getCause()); |
1944 |
+ |
} |
1945 |
+ |
} |
1946 |
+ |
} |
1947 |
|
} |