def IsChanged(self, target=None):
"""
to check whether cache is changed
Args:
target : the target that compared to
Returns:
if file is modified, return True
if file is not modified, return False
"""
# if build flag is True, means it has changed
if self.build:
return True
# check mtime
modify_time = None
try:
modify_time = os.stat(self.pathname).st_mtime
except BaseException:
self.build = True
self.modify_time = 0
return True
if modify_time == self.modify_time:
return False
# check hash
_hash = Function.GetFileMd5(self.pathname)
if _hash != self.hash:
self.hash = _hash
self.build = True
return True
return False
def Initialize(self, target):
"""
to initialize LibCache
Args:
target : the Target.Target object
"""
if not self.initialized:
try:
self.hash = Function.GetFileMd5(self.pathname)
if self.hash:
self.modify_time = os.stat(self.pathname.st_mtime)
except BaseException:
pass
self.build_cmd = target.GetBuildCmd()
self.initialized = True
def __init__(self, pathname, initialized=True):
"""
Args:
pathname : the cvs path of object file
initialized : to mark whether BrocObject need initialized, default is True,
if initialized is False, create a empty BrocObject object
"""
self.pathname = pathname
self.initialized = initialized # initialized flag
self.deps = set() # dependent BrocObject
self.reverse_deps = set() # reversed dependent BrocObject
self.hash = None # hash value of content
self.modify_time = 0 # the last modify time of BrocObject file
self.build_cmd = "" # the commond of BrocObject to build
if self.initialized:
try:
self.hash = Function.GetFileMd5(pathname)
if self.hash:
self.modify_time = os.stat(self.pathname.st_mtime)
except BaseException:
pass
self.build = True # build flag, if build is True, the BrocObject need to compiled
def Update(self):
"""
Update modify time and hash value of cache object
"""
# update modify time
modify_time = None
try:
modify_time = os.stat(self.pathname).st_mtime
except BaseException as err:
Log.Log().LevPrint(
"ERROR", "update cache(%s) failed: %s" % (self.pathname, err))
return
if self.modify_time == modify_time:
self.build = False
return
self.modify_time = modify_time
# update hash
_hash = Function.GetFileMd5(self.pathname)
# Log.Log().LevPrint("MSG", "update %s hash id(%s) %s --> %s" % (self.pathname, id(self), self.hash, _hash))
self.hash = _hash
self.build = False