glibc

glibc - list and other data structures implementations

由 倖福魔咒の 提交于 2019-12-21 04:35:36
问题 I fill like my google searching skills are poor right now, couldn't find a list implementation in glibc, found hash and tree implementations but not a list one. Is there any glibc implementation for that? I don't want to reformat the linux kernel linked list macros and use them in userspace. 回答1: You can use insque(3) and remque(3) 回答2: There's /usr/include/sys/queue.h which contains various linked list variants.(more than the man page documents) Here's an example for a TAIL_QUEUE: Run it

Error while running chromedriver: “/lib64/libc.so.6: version `GLIBC_2.14' not found” in CentOS6

由 徘徊边缘 提交于 2019-12-21 03:59:07
问题 I am trying to launch chromedriver on CentOS 6. More about the OS <code>[root@localhost bin]# uname --all Linux localhost.localdomain 2.6.32-358.el6.x86_64 #1 SMP Fri Feb 22 00:31:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux</code> It throws the following error: [root@localhost bin]# ./chromedriver ./chromedriver: /lib64/libc.so.6: version `GLIBC_2.15' not found (required by ./chromedriver) ./chromedriver: /lib64/libc.so.6: version `GLIBC_2.14' not found (required by ./chromedriver) .

Why glibc and pthread library both defined same APIs?

由 随声附和 提交于 2019-12-21 03:46:23
问题 Why glibc and pthread library both defined same APIs ? Here is the snapshot ubuntu@ubuntu:/lib$ objdump -T /lib/i386-linux-gnu/libc.so.6 |grep pthread_cond_signal 000f8360 g DF .text 00000039 GLIBC_2.3.2 pthread_cond_signal 0012b940 g DF .text 00000039 (GLIBC_2.0) pthread_cond_signal ubuntu@ubuntu:/lib$ objdump -T /lib/i386-linux-gnu/libpthread.so.0 |grep pthread_cond_signal 0000b350 g DF .text 0000007c (GLIBC_2.0) pthread_cond_signal 0000af90 g DF .text 000000fc GLIBC_2.3.2 pthread_cond

glibc detected, realloc(): invalid pointer

由 安稳与你 提交于 2019-12-21 02:42:09
问题 I apologize for the lengthy code. I have a simple question, but I thought I include my code so it will be clear where I am coming from. I get a realloc corruption. I think the corruption is because I am not freeing correctly. In reality I am not sure what glibc even says or means. Can any one briefly explain that to me? Again sorry for the lengthy code. #include "draw2.h" #include "draw2a.h" #include "draw2b.h" const char Exec_c[] = "java -jar Sketchpad.jar"; void parseFile(FILE * fp, FILE

[Oracle] 10.2.0.1安装数据库报java Exception

由 谁都会走 提交于 2019-12-20 17:32:30
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 报错如下： [oracle@rac01 database]$ ./runInstaller -ignoreSysPrereqs Starting Oracle Universal Installer... Checking installer requirements... Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1 or asianux-2 Passed All installer requirements met. Preparing to launch Oracle Universal Installer from /tmp/OraInstall2019-06-17_05-03-40PM. Please wait ...[oracle@rac01 database]$ Oracle Universal Installer, Version 10.2.0.1.0 Production Copyright (C) 1999, 2005, Oracle. All rights reserved. Exception java.lang

Where is the implementation of strlen() in GCC?

由 拜拜、爱过 提交于 2019-12-20 10:38:14
问题 Can anyone point me to the definition of strlen() in GCC? I've been grepping release 4.4.2 for about a half hour now (while Googling like crazy) and I can't seem to find where strlen() is actually implemented. 回答1: You should be looking in glibc, not GCC -- it seems to be defined in strlen.c -- here's a link to strlen.c for glibc version 2.7... And here is a link to the glibc SVN repository online for strlen.c. The reason you should be looking at glibc and not gcc is: The GNU C library is

Can malloc_trim() release memory from the middle of the heap?

由 孤人 提交于 2019-12-19 10:50:50
问题 I am confused about the behaviour of malloc_trim as implemented in the glibc. man malloc_trim [...] malloc_trim - release free memory from the top of the heap [...] This function cannot release free memory located at places other than the top of the heap. When I now look up the source of malloc_trim() (in malloc/malloc.c) I see that it calls mtrim() which is utilizing madvise(x, MADV_DONTNEED) to release memory back to the operating system. So I wonder if the man-page is wrong or if I

“glibc free(): invalid next size(fast)” on vector.push_back?

由 落爺英雄遲暮 提交于 2019-12-19 10:18:10
问题 When I run my program it will occasionally crash and give me this error: " glibc detected /pathtoexecutable: free(): invalid next size (fast)" The backtrace leads to a member function that just calls a vector's push_back function - void Path::add(Position p) {path.push_back(p);} I have tried googling the error and the very large majority of the problems are people allocating too little memory. But how could that be happening on an std::vector<>.push_back? What can I check for? Any help is

malloc_trim(0) Releases Fastbins of Thread Arenas?

由 一曲冷凌霜 提交于 2019-12-19 09:03:56
问题 For the last week or so I've been investigating a problem in an application where the memory usage accumulates over time. I narrowed it down to a line that copies a std::vector< std::vector< std::vector< std::map< uint, map< uint, std::bitset< N> > > > > > in a worker thread (I realize this is a ridiculous way to organize memory). On a regular basis, the worker thread is destroyed, recreated, and that memory structure copied by the thread when it starts. The original data that gets copied is

How to tell if glibc is used

由 岁酱吖の 提交于 2019-12-19 05:02:42
问题 I am trying to implement backtrace functionality for a large framework, which is used for different platforms and OS'es. In some of them, it is linked against glibc, while in the other, something different (eg. uclibc) is used. backtrace() function exists only in the former. Is there any way to tell whether glibc is used? Any #define? I was unable to find an answer in glibc manual. I know I can't have linking-time information during compilation, but I guess include files have to differ. At
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