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60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
# this script is used to analyze the output of the build when running
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# export CXX="/usr/bin/time -p g++"; cmake ..
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# you must run this on a fresh build.
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# This only works on linux and relies on the output of cmake looking a certain way
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import argparse
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import re
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def get_time(line):
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return float(line.split()[-1])
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def parse_file(lines):
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scanning_pattern = re.compile("Scanning dependencies of target \\w+\\n")
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building_cxx_pattern = re.compile("\\[....\\] Building CXX object .+\\n")
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current_target = "UNKNOWN"
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all_builds = []
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time_by_target = dict()
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count_by_target = dict()
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total_real_time = 0.0
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for i in range(len(lines)):
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if(scanning_pattern.match(lines[i])):
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current_target = lines[i][:-1].split()[-1]
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print("current_target is {}".format(current_target))
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if current_target not in time_by_target:
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time_by_target[current_target] = 0.0
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count_by_target[current_target] = 0
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elif(building_cxx_pattern.match(lines[i])):
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obj = lines[i][:-3].split('/')[-1]
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real_time = get_time(lines[i+1])
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user_time = get_time(lines[i+2])
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sys_time = get_time(lines[i+3])
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i += 3
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print(" building cxx is {}: {}, {}, {}".format(obj, real_time, user_time, sys_time))
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all_builds.append((obj, real_time, user_time, sys_time))
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total_real_time += real_time
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time_by_target[current_target] += real_time
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count_by_target[current_target] += 1
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print("Total build time: {}".format(total_real_time))
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for k, v in count_by_target.items():
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print("{}, {}".format(k, v))
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print("-----------------------------------")
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for k, v in time_by_target.items():
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print("{}, {}".format(k, v))
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument(dest = 'input', help = 'Input text file.')
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args = parser.parse_args()
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with open(args.input, "r") as f:
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parse_file(f.readlines())
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if __name__ == "__main__":
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main()
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