New mi commands for threads

[Denis PILAT <denis dot pilat at st dot com>]

Hi everyone,


I'd like to propose an implementation of
-thread-info
-thread-list-all-threads

Before posting patches, I'd like to discuss a little bit.
First should I post 2 patches or can I post only one for both ?

About -thread-info:
------------------
The only way to get information on a thread is the "info thread" cli 
command, this one sometimes takes a while to execute since it gets a lot 
of stuff (we already discusses on performance problem before, I won't 
bother you with that today) . I propose an implementation of 
-thread-info which take an optional argument (the thread ID). If not 
given, we'll get information on the current thread, that could be useful 
as well. If argument if given ... I'm sure you've figured out.
Both of these patch aim at getting rid of CLI command usage into GUI 
client like Eclipse.

Here is an output example of what is implemented:
-thread-info 3
^done,thread-id="3",frame={level="0",addr="0x00aeaaec",func="nanosleep",args=[],from="/lib/tls/libc.so.6"},thread-extra-info="bla 
bla bla"

As you can see I display "extra information" as well. These are not 
given by -thread-list-ids, and it's a good idea since extra info 
retrieval could also take a while.


About -thread-list-all-threads:
-------------------------------
It will display the same for all threads, plus the number of thread and 
the current thread id.
Example:
-thread-list-all-threads
^done,thread-list={thread-id="6",frame={level="0",addr="0x007b9939",func="__lll_mutex_lock_wait",args=[],from="/lib/tls/libpthread.so.0"},thread-extra-info="bla 
bla",thread-id="5",frame={level="0",addr="0x007b9939",func="__lll_mutex_lock_wait",args=[],from="/lib/tls/libpthread.so.0"},thread-extra-info="bla 
bla",thread-id="4",frame={level="0",addr="0x007b9939",func="__lll_mutex_lock_wait",args=[],from="/lib/tls/libpthread.so.0"},thread-extra-info="bla 
bla",thread-id="3",frame={level="0",addr="0x007b9939",func="__lll_mutex_lock_wait",args=[],from="/lib/tls/libpthread.so.0"},thread-extra-info="bla 
bla",thread-id="2",frame={level="0",addr="0x00e80aec",func="nanosleep",args=[],from="/lib/tls/libc.so.6"},thread-extra-info="bla 
bla",thread-id="1",frame={level="0",func="main",args=[],file="/project/flexdbug/user/pd10/gdb/sts-gdb-repository/vendor/cvs/head/src/gdb/testsuite/gdb.mi/pthreads.c",fullname="/project/flexdbug/user/pd10/gdb/sts-gdb-repository/vendor/cvs/head/src/gdb/testsuite/gdb.mi/pthreads.c",line="87"},line="87",file="/project/flexdbug/user/pd10/gdb/sts-gdb-repository/vendor/cvs/head/src/gdb/testsuite/gdb.mi/pthreads.c",thread-extra-info="bla 
bla"},number-of-threads="6",current-thread-id="1"


Do you agree the output contains and format ?

Waiting for your feedback.
Denis