From 666d80e2586b302239e49deb62b5418160b6dd9d Mon Sep 17 00:00:00 2001
From: Johannes Stoelp <johannes.stoelp@gmail.com>
Date: Mon, 26 Jun 2023 21:22:56 +0200
Subject: gdb: example to set bp on all threads but one, show convenience vars

---
 src/tools/gdb.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/tools/gdb.md')

diff --git a/src/tools/gdb.md b/src/tools/gdb.md
index d0191af..5ae9062 100644
--- a/src/tools/gdb.md
+++ b/src/tools/gdb.md
@@ -223,6 +223,14 @@ Create conditional breakpoints for a function `void foo(int i)` in the debugee.
   cond 2 if i == 7
 ```
 
+## Set breakpoint on all threads except one
+Create conditional breakpoint using the `$_thread` [convenience
+variable][gdb-convenience-vars].
+```markdown
+  # Create conditional breakpoint on all threads except thread 12.
+  b foo if $_thread != 12
+```
+
 ## Catch SIGSEGV and execute commands
 This creates a `catchpoint` for the `SIGSEGV` signal and attached the `command`
 to it.
@@ -364,3 +372,5 @@ executed. To workaround that bug one can create a wrapper function which calls
     handler
   end
 ```
+
+[gdb-convenience-vars]: https://sourceware.org/gdb/onlinedocs/gdb/Convenience-Vars.html#Convenience-Vars
-- 
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