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Questions - glibc

Decide GNU or MUSL build of linux in Java

I have a Java desktop application which is supposed to run in both GNU Linux distributions (Debian and Ubuntu) and MUSL Linux distributions (Alpine). My application uses a native library also and nati...
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Gaurav Jeswani

java

native

glibc

jna

musl

Votes: 0

Answers: 2

Latest Answer

Using Java/JNA, you can map the gnu_get_libc_version() function and attempt to execute it after loading libc. If it works, you're on glibc (GNU). If you get an UnsatisfiedLinkError that the function...
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Daniel Widdis

How mkstemp() actually works?

I am confused regarding the working process of the mkstemp() function. In the man page of the mkstemp function, it is said that the function generates unique name and create a file with that name. I t...
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arka

c

linux

posix

glibc

unistd.h

Votes: 0

Answers: 2

Latest Answer

How mkstemp() actually works? Source code is the literal description of an algorithm. Take on one implementation and inspect it. https://github.com/lattera/glibc/blob/master/misc/mkstemp.c -> htt...
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KamilCuk

what is that configures the clock_gettime resolution?

I'm experimenting with the time-management of linux on a raspberry pi. For that I'm looking at clock_gettime (and clock_getres) for CLOCK_REALTIME. I noticed that when I check clock_getres, it always ...
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Folkert van Heusden

c++

linux

time

raspberry-pi

glibc

Votes: 0

Answers: 0

Abort in glibc while trying to use sbrk to reduce the size of the data segment

While working with glibc I tried to reduce the data segment using sbrk using a negative parameter, and found a most strange behaviour. I first malloc, then free it, then reduce data segment with sbrk,...
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Arc

gcc

heap-memory

glibc

mmap

sbrk

Votes: 0

Answers: 2

Latest Answer

It is well-documented that glibc malloc uses sbrk internally. Absent a statement that says otherwise, it can also use memory obtained with sbrk for internal bookkeeping purposes. It is neither documen...
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n. m.

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