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Minor performance optimization in SpawnerInputStream

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This commit is contained in:
Anton Leherbauer 2009-10-16 09:16:51 +00:00
parent 5e58b2deb1
commit 2b5ba96a39
1 changed files with 4 additions and 2 deletions
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6
core/org.eclipse.cdt.core/utils/org/eclipse/cdt/utils/spawner/SpawnerInputStream.java
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@ -61,13 +61,15 @@ class SpawnerInputStream extends InputStream {
} else if (len == 0) { } else if (len == 0) {
return 0; return 0;
} }
byte[] tmpBuf = new byte[len]; byte[] tmpBuf = off > 0 ? new byte[len - off] : buf;
len = read0(fd, tmpBuf, len); len = read0(fd, tmpBuf, len);
if (len <= 0) if (len <= 0)
return -1; return -1;
System.arraycopy(tmpBuf, 0, buf, off, len); if (tmpBuf != buf) {
System.arraycopy(tmpBuf, 0, buf, off, len);
}
return len; return len;
} }