Fengyuan Chen chenfengyuan
chenfengyuan
/ build-hsdis-macos.sh
Created
January 10, 2020 08:27
— forked from rabbitcount/build-hsdis-macos.sh
Java 10 HotSpot Disassembly on macOS Mojave
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| #!/bin/bash -e | |
| # Download OpenJDK Reference Implementation Sources from | |
| # http://jdk.java.net/java-se-ri/10 | |
| curl -O https://download.java.net/openjdk/jdk10/ri/openjdk-10_src.zip | |
| # Navigate to the hsdis sources | |
| unzip openjdk-10_src.zip | |
| cd openjdk/src/utils/hsdis |
chenfengyuan
/ memory-leak.py
Created
June 26, 2018 13:54
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| class A(): | |
| def __del__(self): | |
| pass | |
| def foo(): | |
| a=A() | |
| b=A() | |
| a.a=b | |
| b.a=a | |
| b.data = [0] * 1000 * 1000 * 100 | |
| import time, gc |
chenfengyuan
/ dvorak.reg
Created
April 6, 2016 05:28
— forked from hotpxl/dvorak.reg
Dvorak Keyboard Layout
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| Windows Registry Editor Version 5.00 | |
| [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout] | |
| "ScanCode Map"=hex:00,00,00,00,00,00,00,00,22,00,00,00,2d,00,30,00,24,00,2e,00,\ | |
| 11,00,33,00,33,00,11,00,12,00,20,00,34,00,12,00,1b,00,0d,00,0d,00,1b,00,16,\ | |
| 00,21,00,17,00,22,00,20,00,23,00,1a,00,0c,00,2e,00,17,00,23,00,24,00,14,00,\ | |
| 25,00,31,00,26,00,35,00,1a,00,30,00,31,00,13,00,18,00,26,00,19,00,2f,00,34,\ | |
| 00,28,00,10,00,0c,00,28,00,19,00,13,00,18,00,1f,00,1f,00,27,00,2c,00,35,00,\ | |
| 15,00,14,00,22,00,16,00,25,00,2f,00,10,00,2d,00,21,00,15,00,27,00,2c,00,00,\ | |
| 00,00,00 |
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| #include <algorithm> | |
| #include <iostream> | |
| struct C{ | |
| int v{}; | |
| C(int v_):v{v_}{ | |
| std::cout << "C()[" << v << "]\n"; | |
| } | |
| C(const C &)=delete; | |
| bool operator<(C const & o) const{ | |
| return v < o.v; |
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| #include <stdio.h> | |
| #include <pwd.h> | |
| int main() | |
| { | |
| struct passwd *p; | |
| p = getpwnam("root"); | |
| if (p == NULL) { | |
| printf("no root!\n"); | |
| } else { | |
| printf("root is %d\n", p->pw_uid); |
chenfengyuan
/ type register
Last active
November 3, 2015 02:18
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| #include <iostream> | |
| #if defined(__clang__) | |
| enum { max_depth = 256}; | |
| #else | |
| enum { max_depth = 100}; | |
| #endif | |
| #define INIT_REGISTER(REG) \ | |
| template<typename T, int N> \ | |
| struct REG:REG<T, N-1>{ \ |
chenfengyuan
/ main.cpp
Created
January 15, 2015 06:44
boost use callback functions in stackfull coroutine
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| #include <iostream> | |
| #include <boost/asio.hpp> | |
| #include <boost/date_time/posix_time/posix_time.hpp> | |
| #include <boost/asio/spawn.hpp> | |
| #include <memory> | |
| void bar(boost::asio::io_service &io, std::function<void()> cb){ | |
| auto ptr = std::make_shared<boost::asio::deadline_timer>(io, boost::posix_time::seconds(1)); | |
| ptr->async_wait([ptr, cb](const boost::system::error_code&){cb();}); | |
| } |
chenfengyuan
/ simple query segmentation
Last active
August 29, 2015 13:57
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| %lex | |
| %% | |
| \s+ {} | |
| (AND|OR) { return 'LOG'; } | |
| [a-zA-Z]+ { return 'VAR'; } | |
| "(" return '(' | |
| ")" return ')' | |
| "!" return '!' | |
| <<EOF>> { return 'EOF'; } |
chenfengyuan
/ tuple.cc
Created
January 1, 2014 02:51
clang++ -std=c++11 -Wall -Wextra -stdlib=libc++ -O2 tuple.cc -o tuple.out
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| #include <tuple> | |
| #include <memory> | |
| int main(void){ | |
| using namespace std; | |
| tuple<unique_ptr<char []>> b; | |
| } |
chenfengyuan
/ gist:8192660
Created
December 31, 2013 04:34
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| #include <tuple> | |
| #include <memory> | |
| int main(void){ | |
| using namespace std; | |
| unique_ptr<char[]> a(new char[3]); | |
| make_tuple(move(a)); | |
| } |
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