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@@ -655,3 +655,126 @@ def using_gcc(env):
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def using_clang(env):
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return "clang" in os.path.basename(env["CC"])
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+
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+
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+def show_progress(env):
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+ import sys
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+ from SCons.Script import Progress, Command, AlwaysBuild
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+
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+ screen = sys.stdout
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+ # Progress reporting is not available in non-TTY environments since it
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+ # messes with the output (for example, when writing to a file)
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+ show_progress = env["progress"] and sys.stdout.isatty()
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+ node_count = 0
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+ node_count_max = 0
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+ node_count_interval = 1
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+ node_count_fname = str(env.Dir("#")) + "/.scons_node_count"
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+
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+ import time, math
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+
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+ class cache_progress:
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+ # The default is 1 GB cache and 12 hours half life
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+ def __init__(self, path=None, limit=1073741824, half_life=43200):
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+ self.path = path
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+ self.limit = limit
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+ self.exponent_scale = math.log(2) / half_life
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+ if env["verbose"] and path != None:
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+ screen.write(
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+ "Current cache limit is {} (used: {})\n".format(
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+ self.convert_size(limit), self.convert_size(self.get_size(path))
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+ )
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+ )
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+ self.delete(self.file_list())
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+
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+ def __call__(self, node, *args, **kw):
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+ nonlocal node_count, node_count_max, node_count_interval, node_count_fname, show_progress
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+ if show_progress:
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+ # Print the progress percentage
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+ node_count += node_count_interval
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+ if node_count_max > 0 and node_count <= node_count_max:
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+ screen.write("\r[%3d%%] " % (node_count * 100 / node_count_max))
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+ screen.flush()
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+ elif node_count_max > 0 and node_count > node_count_max:
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+ screen.write("\r[100%] ")
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+ screen.flush()
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+ else:
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+ screen.write("\r[Initial build] ")
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+ screen.flush()
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+
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+ def delete(self, files):
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+ if len(files) == 0:
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+ return
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+ if env["verbose"]:
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+ # Utter something
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+ screen.write("\rPurging %d %s from cache...\n" % (len(files), len(files) > 1 and "files" or "file"))
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+ [os.remove(f) for f in files]
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+
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+ def file_list(self):
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+ if self.path is None:
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+ # Nothing to do
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+ return []
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+ # Gather a list of (filename, (size, atime)) within the
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+ # cache directory
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+ file_stat = [(x, os.stat(x)[6:8]) for x in glob.glob(os.path.join(self.path, "*", "*"))]
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+ if file_stat == []:
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+ # Nothing to do
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+ return []
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+ # Weight the cache files by size (assumed to be roughly
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+ # proportional to the recompilation time) times an exponential
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+ # decay since the ctime, and return a list with the entries
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+ # (filename, size, weight).
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+ current_time = time.time()
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+ file_stat = [(x[0], x[1][0], (current_time - x[1][1])) for x in file_stat]
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+ # Sort by the most recently accessed files (most sensible to keep) first
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+ file_stat.sort(key=lambda x: x[2])
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+ # Search for the first entry where the storage limit is
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+ # reached
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+ sum, mark = 0, None
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+ for i, x in enumerate(file_stat):
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+ sum += x[1]
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+ if sum > self.limit:
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+ mark = i
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+ break
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+ if mark is None:
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+ return []
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+ else:
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+ return [x[0] for x in file_stat[mark:]]
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+
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+ def convert_size(self, size_bytes):
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+ if size_bytes == 0:
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+ return "0 bytes"
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+ size_name = ("bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB")
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+ i = int(math.floor(math.log(size_bytes, 1024)))
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+ p = math.pow(1024, i)
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+ s = round(size_bytes / p, 2)
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+ return "%s %s" % (int(s) if i == 0 else s, size_name[i])
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+
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+ def get_size(self, start_path="."):
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+ total_size = 0
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+ for dirpath, dirnames, filenames in os.walk(start_path):
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+ for f in filenames:
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+ fp = os.path.join(dirpath, f)
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+ total_size += os.path.getsize(fp)
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+ return total_size
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+
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+ def progress_finish(target, source, env):
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+ nonlocal node_count, progressor
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+ with open(node_count_fname, "w") as f:
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+ f.write("%d\n" % node_count)
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+ progressor.delete(progressor.file_list())
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+
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+ try:
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+ with open(node_count_fname) as f:
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+ node_count_max = int(f.readline())
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+ except:
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+ pass
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+
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+ cache_directory = os.environ.get("SCONS_CACHE")
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+ # Simple cache pruning, attached to SCons' progress callback. Trim the
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+ # cache directory to a size not larger than cache_limit.
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+ cache_limit = float(os.getenv("SCONS_CACHE_LIMIT", 1024)) * 1024 * 1024
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+ progressor = cache_progress(cache_directory, cache_limit)
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+ Progress(progressor, interval=node_count_interval)
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+
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+ progress_finish_command = Command("progress_finish", [], progress_finish)
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+ AlwaysBuild(progress_finish_command)
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Rémi Verschelde