Derrick Lyndon Pallas pallas
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| // All rights reserved, | |
| // Derrick Pallas | |
| // License: zlib | |
| #ifndef INTRUSIVE_QUEUE_H | |
| #define INTRUSIVE_QUEUE_H | |
| #include <cassert> | |
| #include <cstddef> |
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| // All rights reserved, | |
| // Derrick Pallas | |
| // License: zlib | |
| #ifndef COUNTABLE_H | |
| #define COUNTABLE_H | |
| #include <cassert> | |
| template <class T> |
pallas
/ intrusive_order.hh
Last active
August 29, 2015 13:58
C++ intrusive ordered queue + fast tail inserts
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| // All rights reserved, | |
| // Derrick Pallas | |
| // License: zlib | |
| #ifndef INTRUSIVE_ORDER_H | |
| #define INTRUSIVE_ORDER_H | |
| #include <cassert> | |
| #include <cstddef> | |
| #include <algorithm> |
pallas
/ magic_mask.h
Created
July 19, 2015 20:54
C++ template to generate a magic mask with alternating runs of 0s & 1s
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| #include <cstdint> | |
| template <typename T> | |
| inline T magic_mask(int_fast8_t n) { | |
| T base = T(1)<<(int_fast16_t(1)<<n); | |
| return (~T(0))/(base*base-1)*(base-1); | |
| } |
pallas
/ minkowski_question_mark.cc
Last active
December 17, 2015 06:28
Minkowski question mark function
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| // All rights reserved, | |
| // Derrick Pallas | |
| // License: zlib | |
| #include <cmath> | |
| #include <cstdlib> | |
| template <typename fp_type> | |
| fp_type minkowski_question_mark(const fp_type fp) { | |
| float a0 = floor(fp); |
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| #ifndef TRY_H | |
| #define TRY_H | |
| #include <cstdio> | |
| #include <cstring> | |
| #include <stdexcept> | |
| #include <errno.h> | |
| #define TRY(f, ...) ({ \ |
pallas
/ container_of.hh
Last active
November 22, 2016 04:05
C++ member-to-object for classes with standard layout
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| // All rights reserved, | |
| // Derrick Pallas | |
| // License: zlib | |
| #ifndef CONTAINER_OF | |
| #define CONTAINER_OF | |
| #include <cstddef> | |
| template <class T, typename M> |
pallas
/ courier-pem.mk
Created
January 14, 2017 21:40
Will regenerate courier.pem & restart mail daemons when Let's Encrypt certificate renews.
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| BASE?=/etc/letsencrypt | |
| DOMAIN?=mx.example.com | |
| DHBITS:=4096 | |
| LIVE:=$(BASE)/live/$(DOMAIN) | |
| PRIVKEY:=$(LIVE)/privkey.pem | |
| FULLCHAIN:=$(LIVE)/fullchain.pem | |
| .PHONY: default |
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| default: all | |
| DEBUG ?= -g -ggdb -DDEBUG | |
| ifeq ($(DEBUG),) | |
| override DEBUG := -DNDEBUG | |
| endif | |
| override LDFLAGS += -lstdc++ | |
| override CFLAGS += $(DEBUG) -MD -MP | |
| override CXXFLAGS += $(DEBUG) -MD -MP |
pallas
/ dblock-update.sh
Last active
February 26, 2019 08:53
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| #!/bin/bash | |
| # Author: Derrick Pallas | |
| # License: zlib | |
| BASE='dblock-set' | |
| TEMP=${BASE}$$ | |
| ipset create -exist "$BASE" hash:ip --netmask 24 || exit 1 | |
| iptables -nL INPUT | grep -q "$BASE" || | |
| ( | |
| ( iptables -N "$BASE" || iptables -F "$BASE" ) && |
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