Added conservative locking to the spack commands that access the database at _index

lib/spack/spack/cmd/__init__.py

@@ -28,6 +28,7 @@
 
 import llnl.util.tty as tty
 from llnl.util.lang import attr_setdefault
+from llnl.util.lock import *
 
 import spack
 import spack.spec
@@ -124,6 +125,7 @@ def elide_list(line_list, max_num=10):
 
 
 def disambiguate_spec(spec):
+    with Read_Lock_Instance(spack.installed_db.lock,1800):
         matching_specs = spack.installed_db.get_installed(spec)
         if not matching_specs:
             tty.die("Spec '%s' matches no installed packages." % spec)

lib/spack/spack/cmd/deactivate.py

@@ -24,6 +24,7 @@
 ##############################################################################
 from external import argparse
 import llnl.util.tty as tty
+from llnl.util.lock import *
 
 import spack
 import spack.cmd
@@ -54,6 +55,7 @@ def deactivate(parser, args):
     if args.all:
         if pkg.extendable:
             tty.msg("Deactivating all extensions of %s" % pkg.spec.short_spec)
+            with Read_Lock_Instance(spack.installed_db.lock,1800):
                 ext_pkgs = spack.installed_db.installed_extensions_for(spec)
 
                 for ext_pkg in ext_pkgs:

lib/spack/spack/cmd/diy.py

@@ -27,6 +27,7 @@
 from external import argparse
 
 import llnl.util.tty as tty
+from llnl.util.lock import *
 
 import spack
 import spack.cmd
@@ -54,6 +55,7 @@ def diy(self, args):
     if not args.spec:
         tty.die("spack diy requires a package spec argument.")
 
+    with Write_Lock_Instance(spack.installed_db.lock,1800):
         specs = spack.cmd.parse_specs(args.spec)
         if len(specs) > 1:
             tty.die("spack diy only takes one spec.")

lib/spack/spack/cmd/extensions.py

@@ -27,6 +27,7 @@
 
 import llnl.util.tty as tty
 from llnl.util.tty.colify import colify
+from llnl.util.lock import *
 
 import spack
 import spack.cmd
@@ -80,6 +81,7 @@ def extensions(parser, args):
     colify(ext.name for ext in extensions)
 
     # List specs of installed extensions.
+    with Read_Lock_Instance(spack.installed_db.lock,1800):
         installed  = [s.spec for s in spack.installed_db.installed_extensions_for(spec)]
     print
     if not installed:

lib/spack/spack/cmd/find.py

@@ -32,6 +32,7 @@
 from llnl.util.tty.colify import *
 from llnl.util.tty.color import *
 from llnl.util.lang import *
+from llnl.util.lock import *
 
 import spack
 import spack.spec
@@ -138,8 +139,10 @@ def find(parser, args):
 
     # Get all the specs the user asked for
     if not query_specs:
+        with Read_Lock_Instance(spack.installed_db.lock,1800):
             specs = set(spack.installed_db.installed_package_specs())
     else:
+        with Read_Lock_Instance(spack.installed_db.lock,1800):
             results = [set(spack.installed_db.get_installed(qs)) for qs in query_specs]
         specs = set.union(*results)
 

lib/spack/spack/cmd/install.py

@@ -25,6 +25,7 @@
 from external import argparse
 
 import llnl.util.tty as tty
+from llnl.util.lock import *
 
 import spack
 import spack.cmd
@@ -68,6 +69,7 @@ def install(parser, args):
     if args.no_checksum:
         spack.do_checksum = False        # TODO: remove this global.
 
+    with Write_Lock_Instance(spack.installed_db.lock,1800):
         specs = spack.cmd.parse_specs(args.packages, concretize=True)
         for spec in specs:
             package = spack.db.get(spec)

lib/spack/spack/cmd/uninstall.py

@@ -27,6 +27,7 @@
 
 import llnl.util.tty as tty
 from llnl.util.tty.colify import colify
+from llnl.util.lock import *
 
 import spack
 import spack.cmd
@@ -53,6 +54,7 @@ def uninstall(parser, args):
     if not args.packages:
         tty.die("uninstall requires at least one package argument.")
 
+    with Write_Lock_Instance(spack.installed_db.lock,1800):
         specs = spack.cmd.parse_specs(args.packages)
 
         # For each spec provided, make sure it refers to only one package.

lib/spack/spack/database.py

@@ -158,12 +158,12 @@ def write(self):
         within the same lock, so there is no need to refresh
         the database within write()
         """
-        temp_name = os.getpid() + socket.getfqdn() + ".temp"
-        temp_file = path.join(self._root,temp_name)
-        with open(self.temp_path,'w') as f:
+        temp_name = str(os.getpid()) + socket.getfqdn() + ".temp"
+        temp_file = join_path(self._root,temp_name)
+        with open(temp_file,'w') as f:
             self._last_write_time = int(time.time())
             self._write_database_to_yaml(f)
-            os.rename(temp_name,self._file_path)
+        os.rename(temp_file,self._file_path)
 
     def is_dirty(self):
         """
@@ -184,6 +184,7 @@ def add(self, spec, path):
         sph['path']=path
         sph['hash']=spec.dag_hash()
 
+        #Should always already be locked
         with Write_Lock_Instance(self.lock,60):
             self.read_database()
             self._data.append(sph)
@@ -197,6 +198,7 @@ def remove(self, spec):
         Searches for and removes the specified spec
         Writes the database back to memory
         """
+        #Should always already be locked
         with Write_Lock_Instance(self.lock,60):
             self.read_database()
 
@@ -237,6 +239,7 @@ def installed_package_specs(self):
         Read installed package names from the database
         and return their specs
         """
+        #Should always already be locked
         with Read_Lock_Instance(self.lock,60):
             self.read_database()