#
# Copyright (C) 2016 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import sys
SVG_NODE_HEIGHT = 17
FONT_SIZE = 12
def hash_to_float(string):
return hash(string) / float(sys.maxsize)
def getLegacyColor(method):
r = 175 + int(50 * hash_to_float(reversed(method)))
g = 60 + int(180 * hash_to_float(method))
b = 60 + int(55 * hash_to_float(reversed(method)))
return (r, g, b)
def getDSOColor(method):
r = 170 + int(80 * hash_to_float(reversed(method)))
g = 180 + int(70 * hash_to_float((method)))
b = 170 + int(80 * hash_to_float(reversed(method)))
return (r, g, b)
def getHeatColor(callsite, total_weight):
r = 245 + 10 * (1 - callsite.weight() / total_weight)
g = 110 + 105 * (1 - callsite.weight() / total_weight)
b = 100
return (r, g, b)
def createSVGNode(callsite, depth, f, total_weight, height, color_scheme, nav):
x = float(callsite.offset) / total_weight * 100
y = height - (depth + 1) * SVG_NODE_HEIGHT
width = callsite.weight() / total_weight * 100
method = callsite.method.replace(">", ">").replace("<", "<")
if width <= 0:
return
if color_scheme == "dso":
r, g, b = getDSOColor(callsite.dso)
elif color_scheme == "legacy":
r, g, b = getLegacyColor(method)
else:
r, g, b = getHeatColor(callsite, total_weight)
r_border, g_border, b_border = [max(0, color - 50) for color in [r, g, b]]
f.write(
"""
%s | %s (%.0f events: %3.2f%%)
""" %
(callsite.id,
','.join(str(x) for x in nav),
method,
callsite.dso,
callsite.weight(),
callsite.weight() / total_weight * 100,
x,
y,
x,
y,
width,
width,
r,
g,
b,
r,
g,
b,
r_border,
g_border,
b_border,
x,
y + 12,
FONT_SIZE))
def renderSVGNodes(flamegraph, depth, f, total_weight, height, color_scheme):
for i, child in enumerate(flamegraph.children):
# Prebuild navigation target for wasd
if i == 0:
left_index = 0
else:
left_index = flamegraph.children[i - 1].id
if i == len(flamegraph.children) - 1:
right_index = 0
else:
right_index = flamegraph.children[i + 1].id
up_index = max(child.children, key=lambda x: x.weight()).id if child.children else 0
# up, left, down, right
nav = [up_index, left_index, flamegraph.id, right_index]
createSVGNode(child, depth, f, total_weight, height, color_scheme, nav)
# Recurse down
renderSVGNodes(child, depth + 1, f, total_weight, height, color_scheme)
def renderSearchNode(f):
f.write(
"""
Search
""")
def renderUnzoomNode(f):
f.write(
"""
Zoom out""")
def renderInfoNode(f):
f.write(
"""
""")
def renderPercentNode(f):
f.write(
"""
100.00%%""")
def renderSVG(flamegraph, f, color_scheme):
height = (flamegraph.get_max_depth() + 2) * SVG_NODE_HEIGHT
f.write("""
""" % height)
f.write("""
\n\n")