Gustavo Lopes cataphract
cataphract
/ heap_profiler_fork_fix.c
Last active
October 30, 2025 19:38
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| /* | |
| * heap_profiler_fork_fix.c | |
| * | |
| * LD_PRELOAD library to enable gperftools heap profiler after fork() | |
| * and patch dlopened libraries so that they too use tcmalloc | |
| * | |
| * This is for usage with gperfpools' tcmalloc: | |
| * https://github.com/gperftools/gperftools | |
| * not | |
| * https://github.com/google/tcmalloc |
cataphract
/ network_key.txt
Created
May 27, 2025 00:02
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| 6c:aa:5c:7a:db:93:11:e7:af:a6:da:3a:99:ef:95:3c |
cataphract
/ res.pdf
Last active
November 22, 2024 11:05
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cataphract
/ Bug2.groovy
Created
July 6, 2023 11:36
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| @Grab('io.undertow:undertow-core:2.2.25.Final') | |
| @Grab('io.undertow:undertow-servlet:2.2.25.Final') | |
| @Grab('com.squareup.okhttp3:okhttp:4.9.1') | |
| import io.undertow.Undertow | |
| import io.undertow.channels.DetachableStreamSinkChannel | |
| import io.undertow.server.HttpServerExchange | |
| import io.undertow.servlet.Servlets | |
| import io.undertow.servlet.api.DeploymentInfo | |
| import io.undertow.servlet.api.ServletContainer |
cataphract
/ gtp.bash
Last active
March 31, 2023 10:42
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| function _h { | |
| local postprompt=$1 | |
| local prompt | |
| if [[ $# -eq 1 || $2 == '-' ]]; then | |
| prompt=$(cat) | |
| else | |
| prompt="$2" | |
| fi | |
| prompt=$(echo "$prompt"$'\n'"$postprompt" | jq -sR '@text') |
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| g++ -v -std=c++11 -fno-exceptions -fno-rtti -nostdlib \ | |
| /usr/lib/x86_64-linux-gnu/{Scrt1.o,crti.o} \ | |
| /usr/lib/gcc/x86_64-linux-gnu/11/crtbeginS.o \ | |
| example.cpp -o example \ | |
| -lgcc \ | |
| -Wl,--push-state -Wl,--as-needed -lgcc_s -Wl,--pop-state \ | |
| -lc -lgcc \ | |
| -Wl,--push-state -Wl,--as-needed -lgcc_s -Wl,--pop-state \ | |
| /usr/lib/gcc/x86_64-linux-gnu/11/crtendS.o \ | |
| /usr/lib/x86_64-linux-gnu/crtn.o |
cataphract
/ dlopenclose.bt
Created
April 28, 2022 18:36
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| struct link_map { | |
| char _other[8]; | |
| char *l_name; | |
| }; | |
| uprobe:/usr/lib/x86_64-linux-gnu/libc.so.6:dlopen { | |
| printf("opening %s\n", str(reg("di"))); | |
| } | |
| uprobe:/usr/lib/x86_64-linux-gnu/libc.so.6:dlclose { | |
| $lm = (struct link_map*)reg("di"); | |
| printf("closing %s\n", str($lm->l_name)); |
cataphract
/ dlopenclose.bt
Last active
April 29, 2022 01:32
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| struct link_map { | |
| char _other[8]; | |
| char *l_name; | |
| char _other2[776]; | |
| unsigned l_direct_opencount; | |
| }; | |
| uprobe:/usr/lib/x86_64-linux-gnu/libc.so.6:dlopen { | |
| @enter[tid] = arg0; | |
| } | |
| uretprobe:/usr/lib/x86_64-linux-gnu/libc.so.6:dlopen { |
cataphract
/ logger_cached.groovy
Created
February 2, 2021 22:56
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| import groovy.transform.CompileStatic | |
| import java.lang.invoke.* | |
| import static groovyjarjarasm.asm.Opcodes.H_INVOKESTATIC | |
| class Logger { | |
| private final String name | |
| Logger(Class cls) { | |
| name = cls.name |
cataphract
/ 01_tag_dispatch.cpp
Last active
November 12, 2020 02:40
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| #include <iostream> | |
| #include <type_traits> | |
| struct type_to_convert { | |
| type_to_convert(int i) : i(i) {}; | |
| type_to_convert(const type_to_convert&) = delete; | |
| type_to_convert(type_to_convert&&) = delete; | |
| int i; | |
| }; |
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