dmtracedump 的替代品
这两天使用 traceview 分析代码性能， google文档上说有一个工具 dmtracedump，可以生成函数调用图。 试验了一下，失败！
google 一下，原来此工具一直处于 broken 状态。 以前玩过 KFI, 一同好还自己开发了工具去生成jpg的函数调用图。 于是，花几个小时写了一个脚本，放在这里，方便同好。
#!/usr/bin/env python """ turn the traceview data into a jpg pic, showing methods call relationship """ import sys import os import struct import re ################################################################################ ######################## Global Variable ##################################### ################################################################################ target_thread=1 #the thread that we want to track, filt out other threads #all_actions = ["enter","exit","exception","reserved"] all_threads = {} all_methods = {} all_records = [] parent_methods = {} child_methods = {} method_calls = {} ################################################################################ ############################## Methods ##################################### ################################################################################ def add_one_thread(line): fields = line.split("/t") all_threads[int(fields[0],10)]=fields def add_one_method(line): fields = line.split("/t") all_methods[int(fields[0],16)]=fields def add_one_record(one): thread_id,=struct.unpack("B",one[:1]) if (thread_id == target_thread): tmp,=struct.unpack("L",one[1:5]) method_id= (tmp / 4) * 4; method_action= tmp % 4; time_offset,=struct.unpack("L",one[5:]) all_records.append([thread_id, method_id, method_action, time_offset]) def handle_one_call(parent_method_id,method_id): if not (parent_methods.has_key(parent_method_id)): parent_methods[parent_method_id]=1 if not (child_methods.has_key(method_id)): child_methods[method_id]=1 if method_calls.has_key(parent_method_id): if method_calls[parent_method_id].has_key(method_id): method_calls[parent_method_id][method_id]+=1 else: method_calls[parent_method_id][method_id]=1 else: method_calls[parent_method_id]={} method_calls[parent_method_id][method_id]=1 def gen_funcname(method_id): r1=re.compile(r'[/$<>]') str1=r1.sub("_",all_methods[method_id][1]) str2=r1.sub("_",all_methods[method_id][2]) return str1+"_"+str2 def gen_dot_script_file(): myoutfile = open("graph.dot", "w") myoutfile.write("digraph vanzo {/n/n"); for one in all_methods.keys(): if parent_methods.has_key(one): myoutfile.write(gen_funcname(one)+" [shape=rectangle];/n") else: if child_methods.has_key(one): myoutfile.write(gen_funcname(one)+" [shape=ellipse];/n") for one in method_calls.keys(): for two in method_calls[one]: myoutfile.write(gen_funcname(one) + ' -> ' + gen_funcname(two) + ' [label="' + str(method_calls[one][two]) + '" fontsize="10"];/n') myoutfile.write("/n}/n"); myoutfile.close ################################################################################ ########################## Script starts from here ############################# ################################################################################ if len(sys.argv) < 2: print 'No input file specified.' sys.exit() if not (os.path.exists(sys.argv[1])): print "input file not exists" sys.exit() #Now handle the text part current_section=0 for line in open(sys.argv[1]): line2 = line.strip() if (line2.startswith("*")): if (line2.startswith("*version")): current_section=1 else: if (line2.startswith("*threads")): current_section=2 else: if (line2.startswith("*methods")): current_section=3 else: if (line2.startswith("*end")): current_section=4 break continue if current_section==2: add_one_thread(line2) if current_section==3: add_one_method(line2) #Now handle the binary part mybinfile = open(sys.argv[1], "rb") alldata = mybinfile.read() mybinfile.close() pos=alldata.find("SLOW") offset,=struct.unpack("H",alldata[pos+6:pos+8]) pos2=pos+offset #pos2 is where the record begin numofrecords = len(alldata) - pos2 numofrecords = numofrecords / 9 for i in xrange(numofrecords): add_one_record(alldata[pos2 + i * 9:pos2 + i * 9 + 9]) my_stack=[0] for onerecord in all_records: thread_id=onerecord[0]; method_id=onerecord[1]; action=onerecord[2]; time=onerecord[3]; if(action==0): if(len(my_stack) > 1): parent_method_id=my_stack[-1] handle_one_call(parent_method_id,method_id) my_stack.append(method_id) else: if(action==1): if(len(my_stack) > 1): my_stack.pop() gen_dot_script_file() os.system("dot -Tjpg graph.dot -o output.jpg;rm -f graph.dot");