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prune cache only at the start and end of build 

(cherry picked from commit 29e6ec6594)
This commit is contained in:
Rhody Lugo 2018-03-01 23:43:15 -04:00 committed by Hein-Pieter van Braam
parent c4468aef5d
commit 5c2e554853
1 changed files with 2 additions and 10 deletions
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12
SConstruct
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@ -498,7 +498,6 @@ screen = sys.stdout
node_count = 0 node_count = 0
node_count_max = 0 node_count_max = 0
node_count_interval = 1 node_count_interval = 1
node_pruning = 8 # Number of nodes to process before prunning the cache
if ('env' in locals()): if ('env' in locals()):
node_count_fname = str(env.Dir('#')) + '/.scons_node_count' node_count_fname = str(env.Dir('#')) + '/.scons_node_count'
# Progress reporting is not available in non-TTY environments since it # Progress reporting is not available in non-TTY environments since it
@ -513,17 +512,15 @@ import time, math
class cache_progress: class cache_progress:
# The default is 1 GB cache and 12 hours half life # The default is 1 GB cache and 12 hours half life
def __init__(self, path = None, limit = 1073741824, half_life = 43200): def __init__(self, path = None, limit = 1073741824, half_life = 43200):
global node_pruning
self.path = path self.path = path
self.limit = limit self.limit = limit
self.exponent_scale = math.log(2) / half_life self.exponent_scale = math.log(2) / half_life
if env['verbose'] and path != None: if env['verbose'] and path != None:
screen.write('Current cache limit is ' + self.convert_size(limit) + ' (used: ' + self.convert_size(self.get_size(path)) + ')\n') screen.write('Current cache limit is ' + self.convert_size(limit) + ' (used: ' + self.convert_size(self.get_size(path)) + ')\n')
self.pruning = node_pruning
self.delete(self.file_list()) self.delete(self.file_list())
def __call__(self, node, *args, **kw): def __call__(self, node, *args, **kw):
global node_count, node_count_max, node_count_interval, node_count_fname, node_pruning, show_progress global node_count, node_count_max, node_count_interval, node_count_fname, show_progress
if show_progress: if show_progress:
# Print the progress percentage # Print the progress percentage
node_count += node_count_interval node_count += node_count_interval
@ -536,11 +533,6 @@ class cache_progress:
else: else:
screen.write('\r[Initial build] ') screen.write('\r[Initial build] ')
screen.flush() screen.flush()
# Prune if the number of nodes processed is 'node_pruning' or bigger
self.pruning -= node_count_interval
if self.pruning <= 0:
self.pruning = node_pruning
self.delete(self.file_list())
def delete(self, files): def delete(self, files):
if len(files) == 0: if len(files) == 0:
@ -548,7 +540,7 @@ class cache_progress:
if env['verbose']: if env['verbose']:
# Utter something # Utter something
screen.write('\rPurging %d %s from cache...\n' % (len(files), len(files) > 1 and 'files' or 'file')) screen.write('\rPurging %d %s from cache...\n' % (len(files), len(files) > 1 and 'files' or 'file'))
map(os.remove, files) [os.remove(f) for f in files]
def file_list(self): def file_list(self):
if self.path == None: if self.path == None: