Mercurial > hg > truffle
changeset 16197:97a10428ff2c
mx: added support for SYMLINK_GRAAL_JAR env var which controls use of symlinks instead of copying when installing graal.jar into the local JDK(s) (disabled by default)
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Fri, 20 Jun 2014 15:23:12 +0200 |
| parents | 8bf243c2c87b |
| children | 006d99164743 |
| files | mx/mx_graal.py |
| diffstat | 1 files changed, 15 insertions(+), 6 deletions(-) [+] |
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--- a/mx/mx_graal.py Fri Jun 20 15:18:38 2014 +0200 +++ b/mx/mx_graal.py Fri Jun 20 15:23:12 2014 +0200 @@ -505,14 +505,23 @@ jreLibDir = join(jdks, e, 'jre', 'lib') if exists(jreLibDir): def install(srcJar, dstDir): - # do a copy and then a move to get atomic updating (on Unix) name = os.path.basename(srcJar) - fd, tmp = tempfile.mkstemp(suffix='', prefix=name, dir=dstDir) - shutil.copyfile(srcJar, tmp) - os.close(fd) dstJar = join(dstDir, name) - shutil.move(tmp, dstJar) - os.chmod(dstJar, JDK_UNIX_PERMISSIONS) + if mx.get_env('SYMLINK_GRAAL_JAR', None) == 'true': + # Using symlinks is much faster than copying but may + # cause issues if graal.jar is being updated while + # the VM is running. + if not os.path.islink(dstJar) or not os.path.realpath(dstJar) == srcJar: + if exists(dstJar): + os.remove(dstJar) + os.symlink(srcJar, dstJar) + else: + # do a copy and then a move to get atomic updating (on Unix) + fd, tmp = tempfile.mkstemp(suffix='', prefix=name, dir=dstDir) + shutil.copyfile(srcJar, tmp) + os.close(fd) + shutil.move(tmp, dstJar) + os.chmod(dstJar, JDK_UNIX_PERMISSIONS) install(graalJar, jreLibDir) if graalDist.sourcesPath: