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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.
This commit is contained in:
Jim Blandy 2007-12-18 18:11:09 +00:00
parent 56e3f43cb6
commit d8b2a6932a
2 changed files with 17 additions and 10 deletions
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7
gdb/doc/ChangeLog
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@ -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):

20
gdb/doc/gdb.texinfo
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@ -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