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authorJim Blandy <jimb@codesourcery.com>2007-12-18 18:11:09 +0000
committerJim Blandy <jimb@codesourcery.com>2007-12-18 18:11:09 +0000
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parent56e3f43cb65608a19ca9005d77c96a66e6e4d7cb (diff)
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* doc/gdb.texinfo (Set Watchpoints): Integrate per-thread
watchpoint explanation into the main description of the watchpoint command; update synopses of 'watch', 'rwatch', and 'awatch' commands.
-rw-r--r--gdb/doc/ChangeLog7
-rw-r--r--gdb/doc/gdb.texinfo20
2 files changed, 17 insertions, 10 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 9b3d833..02e06cf 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,10 @@
+2007-12-18 Jim Blandy <jimb@codesourcery.com>
+
+ * doc/gdb.texinfo (Set Watchpoints): Integrate per-thread
+ watchpoint explanation into the main description of the watchpoint
+ command; update synopses of 'watch', 'rwatch', and 'awatch'
+ commands.
+
2007-12-18 Vladimir Prus <vladimir@codesourcery.com>
* gdb.texinfo (Miscellaneous gdb/mi Commands):
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 177f791..153d4f9 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -3222,7 +3222,7 @@ watchpoints, which do not slow down the running of your program.
@table @code
@kindex watch
-@item watch @var{expr}
+@item watch @var{expr} @r{[}thread @var{threadnum}@r{]}
Set a watchpoint for an expression. @value{GDBN} will break when the
expression @var{expr} is written into by the program and its value
changes. The simplest (and the most popular) use of this command is
@@ -3232,13 +3232,20 @@ to watch the value of a single variable:
(@value{GDBP}) watch foo
@end smallexample
+If the command includes a @code{@r{[}thread @var{threadnum}@r{]}}
+clause, @value{GDBN} breaks only when the thread identified by
+@var{threadnum} changes the value of @var{expr}. If any other threads
+change the value of @var{expr}, @value{GDBN} will not break. Note
+that watchpoints restricted to a single thread in this way only work
+with Hardware Watchpoints.
+
@kindex rwatch
-@item rwatch @var{expr}
+@item rwatch @var{expr} @r{[}thread @var{threadnum}@r{]}
Set a watchpoint that will break when the value of @var{expr} is read
by the program.
@kindex awatch
-@item awatch @var{expr}
+@item awatch @var{expr} @r{[}thread @var{threadnum}@r{]}
Set a watchpoint that will break when @var{expr} is either read from
or written into by the program.
@@ -3357,13 +3364,6 @@ way of doing that would be to set a code breakpoint at the entry to the
In multi-threaded programs, watchpoints will detect changes to the
watched expression from every thread.
-@kindex watch thread thread_num
-@item watch @var{expr} thread @var{threadnum}
-Set a watchpoint that will break when @var{expr} is either read from
-or written into by the thread identified by @var{threadnum}. If @var{expr}
-is modified by any other threads not matching @var{threadnum}, @value{GDBN}
-will not break. Note that this will only work with Hardware Watchpoints.
-
@quotation
@emph{Warning:} In multi-threaded programs, software watchpoints
have only limited usefulness. If @value{GDBN} creates a software