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author | Pedro Alves <palves@redhat.com> | 2015-12-10 17:47:57 +0000 |
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committer | Pedro Alves <palves@redhat.com> | 2015-12-10 17:47:57 +0000 |
commit | f4f4330e517a0497601baf6253d6408b77b10626 (patch) | |
tree | 53596df5d265723ff15bdaa3d896b4dc6b77d22c /gdb | |
parent | 22a5455c6ccaf6157095863f9e6da33a81541acf (diff) | |
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[gdb/doc] Explain that there's always a thread
This warning is a few years out of date -- there's always a thread
nowadays.
gdb/doc/ChangeLog:
* gdb.texinfo (Threads): Replace warning with explanation
about single-threaded programs.
Diffstat (limited to 'gdb')
-rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
-rw-r--r-- | gdb/doc/gdb.texinfo | 22 |
2 files changed, 9 insertions, 18 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 59f1eff..fc81d09 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,5 +1,10 @@ 2015-12-10 Pedro Alves <palves@redhat.com> + * gdb.texinfo (Threads): Replace warning with explanation + about single-threaded programs. + +2015-12-10 Pedro Alves <palves@redhat.com> + * gdb.texinfo (Threads): Remove mention of SGI. (Forks): Remove mention of HP-UX. (Breakpoints): Remove mention of HP-UX. diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index e8b419c..bb68e21 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -2844,24 +2844,6 @@ the user specify which @code{libthread_db} to use if the default choice isn't compatible with the program. @end itemize -@quotation -@emph{Warning:} These facilities are not yet available on every -@value{GDBN} configuration where the operating system supports threads. -If your @value{GDBN} does not support threads, these commands have no -effect. For example, a system without thread support shows no output -from @samp{info threads}, and always rejects the @code{thread} command, -like this: - -@smallexample -(@value{GDBP}) info threads -(@value{GDBP}) thread 1 -Thread ID 1 not known. Use the "info threads" command to -see the IDs of currently known threads. -@end smallexample -@c FIXME to implementors: how hard would it be to say "sorry, this GDB -@c doesn't support threads"? -@end quotation - @cindex focus of debugging @cindex current thread The @value{GDBN} thread debugging facility allows you to observe all @@ -2903,6 +2885,10 @@ further qualifier. For debugging purposes, @value{GDBN} associates its own thread number---always a single integer---with each thread in your program. +From @value{GDBN}'s perspective, a process always has at least one +thread. In other words, @value{GDBN} assigns a thread number to the +program's ``main thread'' even if the program is not multi-threaded. + @table @code @kindex info threads @item info threads @r{[}@var{id}@dots{}@r{]} |