Mercurial > hg > truffle
comparison mxtool/mx.py @ 21880:518052de60d5
handle race creating a symlink in mx
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Tue, 09 Jun 2015 17:23:42 +0200 |
| parents | fe0d57a9b79b |
| children | 969ae2657b92 |
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| 21879:90fd69243227 | 21880:518052de60d5 |
|---|---|
| 649 os.makedirs(d) | 649 os.makedirs(d) |
| 650 | 650 |
| 651 if canSymlink and 'symlink' in dir(os): | 651 if canSymlink and 'symlink' in dir(os): |
| 652 if exists(path): | 652 if exists(path): |
| 653 os.unlink(path) | 653 os.unlink(path) |
| 654 os.symlink(cachePath, path) | 654 try: |
| 655 os.symlink(cachePath, path) | |
| 656 except OSError as e: | |
| 657 # When doing parallel building, the symlink can fail | |
| 658 # if another thread wins the race to create the symlink | |
| 659 if not exists(path): | |
| 660 # It was some other error | |
| 661 raise e | |
| 662 | |
| 655 else: | 663 else: |
| 656 shutil.copy(cachePath, path) | 664 shutil.copy(cachePath, path) |
| 657 | 665 |
| 658 def _sha1Cached(): | 666 def _sha1Cached(): |
| 659 with open(sha1path, 'r') as f: | 667 with open(sha1path, 'r') as f: |