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52 lines
1.4 KiB
Python
52 lines
1.4 KiB
Python
#!/usr/bin/python
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# This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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# Given a profile dump, this tool generates a flame graph based on the stacks listed in the profile
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# The result of analysis is a .svg file which can be viewed in a browser
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import sys
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import svg
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class Node(svg.Node):
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def __init__(self):
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svg.Node.__init__(self)
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self.function = ""
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self.source = ""
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self.line = 0
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self.ticks = 0
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def text(self):
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return self.function
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def title(self):
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if self.line > 0:
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return "{}\n{}:{}".format(self.function, self.source, self.line)
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else:
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return self.function
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def details(self, root):
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return "Function: {} [{}:{}] ({:,} usec, {:.1%}); self: {:,} usec".format(self.function, self.source, self.line, self.width, self.width / root.width, self.ticks)
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with open(sys.argv[1]) as f:
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dump = f.readlines()
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root = Node()
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for l in dump:
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ticks, stack = l.strip().split(" ", 1)
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node = root
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for f in reversed(stack.split(";")):
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source, function, line = f.split(",")
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child = node.child(f)
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child.function = function
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child.source = source
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child.line = int(line) if len(line) > 0 else 0
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node = child
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node.ticks += int(ticks)
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svg.layout(root, lambda n: n.ticks)
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svg.display(root, "Flame Graph", "hot", flip = True)
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