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https://ftp.gnu.org/old-gnu/Manuals/gdb/html_node/gdb_24.html
Debugging programs with multiple threads. In some operating systems, ... If your GDB does not support threads, these commands have no effect. For example, a system without thread support shows no output from `info threads', and always rejects the thread command, like this:
https://stackoverflow.com/questions/7517236/how-do-i-enable-reverse-debugging-on-a-multi-threaded-program
Sep 23, 2011 · I'm trying to use the reverse debugging features of gdb 7.3.1 on a multi-threaded project (using libevent), but I get the following error: (gdb) reverse-step Target multi-thread does not support this command. From this question, I thought perhaps that it was an issue loading libthread_db but, when I run the program, gdb says:
https://sourceware.org/gdb/onlinedocs/gdb/Threads.html
4.10 Debugging Programs with Multiple Threads. ... The GDB thread debugging facility allows you to observe all threads while your program runs—but whenever GDB takes control, one thread in particular is always the focus of debugging. This thread is called the current thread. Debugging commands show program information from the perspective of ...
https://www-zeuthen.desy.de/unix/unixguide/infohtml/gdb/Threads.html
Debugging with GDB. 4.10 Debugging Programs with Multiple Threads. In some operating systems, such as HP-UX and Solaris, a single program may have more than one thread of execution. The precise semantics of threads differ from one operating system to another, but in general the threads of a single program are akin to multiple processes—except that they share one address space (that is, they ...
https://www.gnu.org/software/gdb/papers/multi-arch/real-multi-arch/
GDB includes support for multi-threaded targets. Unfortunatly, that support does not allow GDB or Insight to debug more than one thread simultaneously - there is always a single current thread and the user must explicitly switch between them. multi-arch - single architecture variant GDB includes support for debugging variants of an instruction ...
https://communities.mentor.com/docs/DOC-3037
May 23, 2012 · We have adapted GDB’s control commands, strengthened GDB’s event loop, extended GDB’s remote protocol, and implemented new techniques for inserting, removing, and stepping past breakpoints. This project lifts long-standing restrictions in GDB’s thread support, using a number of interesting techniques.
https://sourceware.org/gdb/onlinedocs/gdb/All_002dStop-Mode.html
In the latter case, you can instruct GDB to allow all threads of all the inferiors to run with the set schedule-multiple command. set schedule-multiple. Set the mode for allowing threads of multiple processes to be resumed when an execution command is issued. When on, all threads of …
https://blog.tartanllama.xyz/writing-a-linux-debugger-advanced-topics/
Aug 01, 2017 · Multi-threaded debugging support. The debugger shown in this series only supports single threaded applications, but to debug most real-world applications, multi-threaded support is highly desirable. The simplest way to support this is to trace thread creation and parse the procfs to get the information you want.
http://web.mit.edu/gnu/doc/html/gdb_6.html
If your GDB does not support threads, these commands have no effect. For example, a system without thread support shows no output from `info threads', and always rejects the thread command, like this: (gdb) info threads (gdb) thread 1 Thread ID 1 not known. Use the "info threads" command to see the IDs of currently known threads.
http://processors.wiki.ti.com/index.php/Multithreaded_Debugging_Made_Easier_by_Forcing_Core_Dumps
If you've ever been frustrated while trying to list the running threads in gdb or have been unable to successfully display a stack trace for any of them, you'll be happy to hear about my recent discovery: gdb's support for debugging multithreaded programs is much more reliable when you are debugging a core file. Example Debugging Session
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