Question

使用

stack ghci --profile --ghci-options '+RTS -xc -RTS'

我明白了：

ghc: the flag -xc requires the program to be built with -prof

哪个程序不是使用-prof构建的，为什么？

Answer 1

build:
  library-profiling: true
  executable-profiling: true

以上似乎对我有用（确实需要几秒钟才能启动）。我必须将以下内容添加到stack build --enable-library-profiling：

start.php

更多信息： https://github.com/commercialhaskell/stack/blob/master/doc/GUIDE.md#debugging http://simonmar.github.io/posts/2016-02-12-Stack-traces-in-GHCi.html

我可能实际上运行了一些额外的命令，可能是<?php require_once '/home/ubuntu/workspace/workerman/vendor/autoload.php'; use Workerman\Worker; // Create a Websocket server $ws_worker = new Worker("websocket://0.0.0.0:2346"); // 4 processes $ws_worker->count = 4; // Emitted when new connection come $ws_worker->onConnect = function($connection) { echo "New connection\n"; }; // Emitted when data received $ws_worker->onMessage = function($connection, $data) { // Send hello $data $connection->send('hello ' . $data); }; // Emitted when connection closed $ws_worker->onClose = function($connection) { echo "Connection closed\n"; }; // Run worker Worker::runAll();。

如何使用堆栈和GHCI获得堆栈跟踪？

1 个答案: