Flash/Actionscript CPU 分析器

Question

你找到这样的工具并成功使用了吗？

Answer 1

我也在寻找 AS 的分析器，但我想要一个与 FlashDevelop 和 Flex SDK 配合使用的免费软件/开源解决方案。我没有找到。所以我写了一个简单的python脚本和一个更简单的AS类。该脚本基本上采用任何 AS 文件并将分析代码(即以 1 毫秒的精度测量该函数的总运行时间的调用 - flash.utils.getTimer() 调用的分辨率)添加到每个函数定义。脚本有时会出错，但这些通常很容易手动修复。然后您需要手动再添加一行:在某个时刻转储分析统计信息。这种方法显然不够准确，但它仍然让您对代码中的瓶颈有很好的感觉。我成功地将它用于 100k 文件。

这是AS类:

package  {
    public class Profiler {
        private static var instance:Profiler;

        public static function get profiler():Profiler {
            if (!Profiler.instance) Profiler.instance = new Profiler;
            return Profiler.instance;
        }

        private var data:Object = {};

        public function profile(fn:String, dur:int):void {
            if (!data.hasOwnProperty(fn)) data[fn] = new Number(0);
            data[fn] += dur / 1000.0;
        }

        public function clear():void {
            data = { };
        }

        public function get stats():String {
            var st:String = "";
            for (var fn:String in data) {
                st += fn + ":\t" + data[fn] + "\n";
            }
            return st;
        }
    }
}

这是可以解决问题的python脚本:

import sre, sys

rePOI = sre.compile(r'''\bclass\b|\bfunction\b|\breturn\b|["'/{}]''')
reFun = sre.compile(r'\bfunction\b\s*((?:[gs]et\s+)?\w*)\s*\(')
reCls = sre.compile(r'class\s+(\w+)[\s{]')
reStr = sre.compile(r'''(["'/]).*?(?<!\\)\1''')

def addProfilingCalls(body):
    stack = []
    pos = 0
    depth = 0
    retvar = 0
    klass = ""
    match = rePOI.search(body, pos)
    while match:
        poi = match.group(0)
        pos = match.start(0)
        endpos = match.end(0)

        if poi in '''"'/''':
            strm = reStr.match(body, pos)
            if strm and (poi != '/' or sre.search('[=(,]\s*$', body[:pos])):
                endpos = strm.end(0)

        elif poi == 'class':
            klass = reCls.match(body, pos).group(1)
            sys.stderr.write('class ' + klass + '\n')

        elif poi == 'function':
            fname = reFun.match(body, pos)
            if fname.group(1):
                fname = klass + '.' + fname.group(1)
            else:
                lastf = stack[-1]
                lastf['anon'] += 1
                fname = lastf['name'] + '.anon' + str(lastf['anon'])
            sys.stderr.write('function ' + fname + '\n')
            stack.append({'name':fname, 'depth':depth, 'anon':0})

            brace = body.find('{', pos) + 1
            line = "\nvar __start__:int = flash.utils.getTimer();"
            body = body[:brace] + line + body[brace:]
            depth += 1
            endpos = brace + len(line)

        elif poi == '{':
            depth += 1

        elif poi == 'return':
            lastf = stack[-1]
            semicolon = body.find(';', pos) + 1
            if sre.match('return\s*;', body[pos:]):
                line = "{ Profiler.profiler.profile('" + lastf['name'] + \
                       "', flash.utils.getTimer() - __start__); return; }"
            else:
                retvar += 1
                line = "{ var __ret" + str(retvar) + "__:* =" + body[pos+6:semicolon] + \
                       "\nProfiler.profiler.profile('" + lastf['name'] + \
                       "', flash.utils.getTimer() - __start__); return __ret" + str(retvar) + "__; }"
            body = body[:pos] + line + body[semicolon:]
            endpos = pos + len(line)

        elif poi == '}':
            depth -= 1
            if len(stack) > 0 and stack[-1]['depth'] == depth:
                lastf = stack.pop()
                line = "Profiler.profiler.profile('" + lastf['name'] + \
                    "', flash.utils.getTimer() - __start__);\n"
                body = body[:pos] + line + body[pos:]
                endpos += len(line)

        pos = endpos
        match = rePOI.search(body, pos)
    return body

def main():
    if len(sys.argv) >= 2: inf = open(sys.argv[1], 'rU')
    else: inf = sys.stdin
    if len(sys.argv) >= 3: outf = open(sys.argv[2], 'wU')
    else: outf = sys.stdout
    outf.write(addProfilingCalls(inf.read()))
    inf.close()
    outf.close()

if __name__ == "__main__":
    main()

随意使用、分发和修改两者。