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properly implement locks

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This commit is contained in:
Tahg 2011-03-10 21:37:55 -05:00
parent c0b3e80d1d
commit c06f3e0d76
1 changed files with 33 additions and 49 deletions
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82
src/main/java/org/bukkit/craftbukkit/util/LongHashset.java
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@ -29,37 +29,32 @@ public class LongHashset extends LongHash
public void add(long key) {
int mainIdx = (int) (key & 255);
int outerIdx = (int) ((key >> 32) & 255);
rl.lock();
wl.lock();
try {
wl.lock();
try {
long outer[][] = values[mainIdx], inner[];
if (outer == null)
values[mainIdx] = outer = new long[256][];
inner = outer[outerIdx];
if (inner == null) {
synchronized (this) {
outer[outerIdx] = inner = new long[1];
inner[0] = key;
count++;
}
} else {
int i;
for (i = 0; i < inner.length; i++) {
if (inner[i] == key) {
return;
}
}
inner = Arrays_copyOf(inner, i + 1);
outer[outerIdx] = inner;
inner[i] = key;
long outer[][] = values[mainIdx], inner[];
if (outer == null)
values[mainIdx] = outer = new long[256][];
inner = outer[outerIdx];
if (inner == null) {
synchronized (this) {
outer[outerIdx] = inner = new long[1];
inner[0] = key;
count++;
}
} finally {
wl.unlock();
} else {
int i;
for (i = 0; i < inner.length; i++) {
if (inner[i] == key) {
return;
}
}
inner = Arrays_copyOf(inner, i + 1);
outer[outerIdx] = inner;
inner[i] = key;
count++;
}
} finally {
rl.unlock();
wl.unlock();
}
}
@ -87,7 +82,7 @@ public class LongHashset extends LongHash
}
public void remove(long key) {
rl.lock();
wl.lock();
try {
long[][] outer = this.values[(int) (key & 255)];
if (outer == null)
@ -100,26 +95,21 @@ public class LongHashset extends LongHash
int max = inner.length - 1;
for (int i = 0; i <= max; i++) {
if (inner[i] == key) {
wl.lock();
try {
count--;
if (i != max) {
inner[i] = inner[max];
}
outer[(int) ((key >> 32) & 255)] = (max == 0 ? null : Arrays_copyOf(inner, max));
} finally {
wl.unlock();
count--;
if (i != max) {
inner[i] = inner[max];
}
outer[(int) ((key >> 32) & 255)] = (max == 0 ? null : Arrays_copyOf(inner, max));
return;
}
}
} finally {
rl.unlock();
wl.unlock();
}
}
public long popFirst() {
rl.lock();
wl.lock();
try {
for (long[][] outer : values) {
if (outer == null)
@ -128,20 +118,14 @@ public class LongHashset extends LongHash
long[] inner = outer[i];
if (inner == null || inner.length == 0)
continue;
wl.lock();
try {
count--;
long ret = inner[inner.length - 1];
outer[i] = Arrays_copyOf(inner, inner.length - 1);
return ret;
} finally {
wl.unlock();
}
count--;
long ret = inner[inner.length - 1];
outer[i] = Arrays_copyOf(inner, inner.length - 1);
return ret;
}
}
} finally {
rl.unlock();
wl.unlock();
}
return 0;
}