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#
# This file is part of darktable,
# Copyright (C) 2022 darktable developers.
#
# darktable is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# darktable is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with darktable. If not, see <http://www.gnu.org/licenses/>.
#
# Read an IOP file and guess how many buffers it needs from reading allocs
# This can be used to predict the RAM footprint of an IOP and setup tiling properly
# Example use :
# `python tiling.py filmicrgb.c OpenCL` for OpenCL buffers
# `python tiling.py filmicrgb.c C` for C buffers
import os
import re
import sys
directory = "../src/iop/"
path = os.path.join(directory, sys.argv[1])
if(not os.path.isfile(path)):
print("%s is not a file" % path)
exit(1)
lang = ""
if(len(sys.argv) > 2):
lang = sys.argv[2]
f = open(path, "r")
content = f.read()
print(path)
excluded_keywords = [ "float", "size_t", "int", "uint", "uint8_t", "uint16_t", "cl_mem", "sizeof" ]
def parse_allocs(regex, content):
matches = re.finditer(regex, content, re.MULTILINE)
for matchNum, match in enumerate(matches):
# Get the name of the pointer to the allocation
variable_name = match.group(1)
# Get the type of alloc function
alloc_type = match.group(2)
# Get the arguments of the function
args = match.group(3)
print("\t", match.group(0))
# Extract all arguments
args = args.split(",")
for arg in args:
# Try to find variables in arguments
variables_mask = r"([a-zA-Z\_]+\[{0,1}[0-9A-Z]*\]{0,1}[\-\>]*[a-zA-Z0-9\_]*\[{0,1}[0-9A-Z]*\]{0,1})"
variables = set(re.findall(variables_mask, arg))
for var in variables:
# Try to find the variables assignations/declarations
if var not in excluded_keywords:
print("\t\t-", var, ":")
# Remove arrays if any
var = re.sub(r"\[.*\]", "", var)
declaration_mask = r"%s\[{0,1}[0-9A-Z]*\]{0,1} = .+;" % var
declarations = set(re.findall(declaration_mask, content))
# Print the declaration line of the variables if found
if(len(declarations) > 0):
for declaration in declarations:
print("\t\t\t", declaration)
else:
print("\t\t\t no assignation found")
if(lang == "C"):
print("C buffers allocated:")
alloc_regex = r"([a-zA-Z0-9_\-\>\.\[\]]+) = (dt_|c|m)alloc.*\((.+)\)"
parse_allocs(alloc_regex, content)
elif(lang == "OpenCL"):
print("\nOpenCL buffers allocated:")
alloc_regex = r"([a-zA-Z0-9_\-\>\.\[\]]+) = dt_opencl(.*)alloc[a-zA-Z_-]*\((.+)\)"
parse_allocs(alloc_regex, content)
else:
print("Option 2 `%s` not recognized" % lang)
print("valid options are `C` or `OpenCL`")
print("Example:")
print("\t`python tiling.py filmicrgb.c OpenCL` for OpenCL buffers")
print("\t`python tiling.py filmicrgb.c C` for C buffers")
f.close()
exit(1)
f.close()
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