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https://github.com/zekexiao/pocketlang.git
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1c7ddf07ad
a little python script have written to check for memory leaks from the trace report. Which is at scripts/leak_detect.py
76 lines
2.0 KiB
Python
76 lines
2.0 KiB
Python
##
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## Copyright (c) 2020-2022 Thakee Nathees
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## Copyright (c) 2021-2022 Pocketlang Contributors
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## Distributed Under The MIT License
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##
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## A quick script to detect memory leaks, from the trace report.
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## To get the trace report redefine TRACE_MEMORY as 1 at the
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## pk_internal.h and compile pocketlang.
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import sys
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def detect_leak():
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trace_log_id = "[memory trace]"
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total_bytes = 0 ## Totally allocated bytes.
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mem = dict() ## key = address, value = bytes.
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trace_log_file_path = sys.argv[1]
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with open(trace_log_file_path, 'r') as f:
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for line in f.readlines():
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if line.startswith(trace_log_id):
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line = line[len(trace_log_id) + 1:].strip()
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type, data = split_and_strip(line, ':')
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addr, bytes = split_and_strip(data, '=')
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bytes = bytes.replace(' bytes', '')
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if type == "malloc":
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bytes = int(bytes)
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assert(bytes >= 0); total_bytes += bytes
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mem[addr] = bytes
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elif type == "free":
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bytes = int(bytes)
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assert(bytes <= 0); total_bytes += bytes
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mem.pop(addr)
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elif type == "realloc":
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oldp, newp = split_and_strip(addr, '->')
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olds, news = split_and_strip(bytes, '->')
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olds = int(olds); news = int(news)
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total_bytes += (news - olds)
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assert(mem[oldp] == olds)
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mem.pop(oldp)
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mem[newp] = news
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success = True
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if total_bytes != 0:
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print_err(f"Memory leak detected - {total_bytes} bytes were never freed.")
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success = False
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if len(mem) != 0:
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print_err("Memory leak detected - some addresses were never freed.")
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for addr in mem:
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print(f" {addr} : {mem[addr]} bytes")
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success = False
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if success:
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print("No leaks were detected.")
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else:
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sys.exit(1)
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def split_and_strip(string, delim):
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return map(lambda s: s.strip(), string.split(delim))
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def print_err(msg):
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print("Error:", msg, file=sys.stderr)
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if __name__ == "__main__":
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detect_leak()
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