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Graphics Interchange Format  |  2000-05-24  |  11KB  |  600x535  |  1-bit (2 colors)

Labels: book | bulletin board | dialog box | monitor | sky
OCR: ENTER Dat aLock) ENTER (DataLock) Inc (Act ive Readers Inc Act iveWri iters) Act iveWriters 0? Read: ngReaders 0? Inc (Read: ingReaders Inc (WritingWriters) SIGNAI (ReaderSem) SIGNAL (WriterSem) LEAVE (DataLock) LEAVE DataLock) WAIT(ReaderSem) WAIT (UriterSem) ENTER (WriteLock) Perform reai operations Perform write opera tions ENTER (DataLock) LEAVE (WriteLock) Dec (Readi ingReaders) Dec (Act ive Readers ENTER (DataLock) ReadingReaders Dec (WritingWr iters) Dec (ActiveWriters) WritingWriters ct iveWriters ActiveWriters? Readi ngReaders Inc (Wri itingWri .ters Act iveReaders? SIGNAL (WriterSem) Inc Readi ingReaders) LEAVE (DataLock) SIGNAL (ReaderSem) LEAVE DataLockl ivewritersl ncReaders Writ incWr LEVE

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