Use ptid_t.tid to store thread ids instead of ptid_t.pid.
* remote.c (magic_null_ptid, not_sent_ptid, any_thread_ptid): New globals. (general_thread, continue_thread): Change type to ptid_t. (record_currthread): Take a ptid_t parameter instead of an integer. (MAGIC_NULL_PID): Delete. (set_thread): Take a ptid_t parameter and adjust. (set_general_thread, set_continue_thread): New. (remote_thread_alive, remote_newthread_step) (remote_current_thread, remote_find_new_threads) (remote_threads_info, remote_start_remote, remote_vcont_resume) (remote_resume_1, remote_wait, extended_remote_create_inferior_1) (threadalive_test, remote_pid_to_str) (remote_get_thread_local_address): Adjust. (_initialize_remote): Initialize magic_null_ptid, not_sent_ptid and any_thread_ptid.
This commit is contained in:
Pedro Alves
parent
56a2504d54
commit
79d7f22901
@ -1,3 +1,24 @@
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2008-06-26 Pedro Alves <pedro@codesourcery.com>
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Use ptid_t.tid to store thread ids instead of ptid_t.pid.
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* remote.c (magic_null_ptid, not_sent_ptid, any_thread_ptid): New
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globals.
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(general_thread, continue_thread): Change type to ptid_t.
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(record_currthread): Take a ptid_t parameter instead of an
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integer.
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(MAGIC_NULL_PID): Delete.
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(set_thread): Take a ptid_t parameter and adjust.
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(set_general_thread, set_continue_thread): New.
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(remote_thread_alive, remote_newthread_step)
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(remote_current_thread, remote_find_new_threads)
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(remote_threads_info, remote_start_remote, remote_vcont_resume)
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(remote_resume_1, remote_wait, extended_remote_create_inferior_1)
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(threadalive_test, remote_pid_to_str)
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(remote_get_thread_local_address): Adjust.
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(_initialize_remote): Initialize magic_null_ptid, not_sent_ptid
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and any_thread_ptid.
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2008-06-26 Jan Kratochvil <jan.kratochvil@redhat.com>
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* configure.ac (--enable-tui): AC_MSG_ERROR for explicit --enable-tui.
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240
gdb/remote.c
240
gdb/remote.c
@ -138,7 +138,8 @@ static void remote_interrupt_twice (int signo);
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static void interrupt_query (void);
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static void set_thread (int, int);
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static void set_general_thread (struct ptid ptid);
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static void set_continue_thread (struct ptid ptid);
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static int remote_thread_alive (ptid_t);
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@ -180,7 +181,7 @@ static ptid_t remote_current_thread (ptid_t oldptid);
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static void remote_find_new_threads (void);
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static void record_currthread (int currthread);
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static void record_currthread (ptid_t currthread);
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static int fromhex (int a);
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@ -1063,11 +1064,16 @@ static struct async_signal_handler *sigint_remote_token;
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static ptid_t magic_null_ptid;
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static ptid_t not_sent_ptid;
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static ptid_t any_thread_ptid;
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/* These are the threads which we last sent to the remote system. The
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TID member will be -1 for all or -2 for not sent yet. */
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static ptid_t general_thread;
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static ptid_t continue_thread;
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/* These are the threads which we last sent to the remote system.
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-1 for all or -2 for not sent yet. */
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static int general_thread;
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static int continue_thread;
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/* Call this function as a result of
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1) A halt indication (T packet) containing a thread id
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@ -1076,14 +1082,14 @@ static int continue_thread;
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*/
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static void
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record_currthread (int currthread)
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record_currthread (ptid_t currthread)
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{
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general_thread = currthread;
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/* If this is a new thread, add it to GDB's thread list.
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If we leave it up to WFI to do this, bad things will happen. */
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if (!in_thread_list (pid_to_ptid (currthread)))
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add_thread (pid_to_ptid (currthread));
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if (!in_thread_list (currthread))
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add_thread (currthread);
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}
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static char *last_pass_packet;
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@ -1145,44 +1151,66 @@ remote_pass_signals (void)
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}
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}
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#define MAGIC_NULL_PID 42000
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/* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
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MINUS_ONE_PTID, set the thread to -1, so the stub returns the
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thread. If GEN is set, set the general thread, if not, then set
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the step/continue thread. */
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static void
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set_thread (int th, int gen)
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set_thread (struct ptid ptid, int gen)
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{
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struct remote_state *rs = get_remote_state ();
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ptid_t state = gen ? general_thread : continue_thread;
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char *buf = rs->buf;
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int state = gen ? general_thread : continue_thread;
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char *endbuf = rs->buf + get_remote_packet_size ();
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if (state == th)
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if (ptid_equal (state, ptid))
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return;
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buf[0] = 'H';
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buf[1] = gen ? 'g' : 'c';
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if (th == MAGIC_NULL_PID)
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{
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buf[2] = '0';
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buf[3] = '\0';
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}
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else if (th < 0)
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xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th);
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*buf++ = 'H';
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*buf++ = gen ? 'g' : 'c';
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if (ptid_equal (ptid, magic_null_ptid))
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xsnprintf (buf, endbuf - buf, "0");
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else if (ptid_equal (ptid, any_thread_ptid))
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xsnprintf (buf, endbuf - buf, "0");
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else if (ptid_equal (ptid, minus_one_ptid))
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xsnprintf (buf, endbuf - buf, "-1");
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else
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xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th);
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putpkt (buf);
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{
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int tid = ptid_get_tid (ptid);
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if (tid < 0)
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xsnprintf (buf, endbuf - buf, "-%x", -tid);
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else
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xsnprintf (buf, endbuf - buf, "%x", tid);
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}
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putpkt (rs->buf);
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getpkt (&rs->buf, &rs->buf_size, 0);
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if (gen)
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general_thread = th;
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general_thread = ptid;
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else
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continue_thread = th;
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continue_thread = ptid;
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}
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static void
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set_general_thread (struct ptid ptid)
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{
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set_thread (ptid, 1);
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}
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static void
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set_continue_thread (struct ptid ptid)
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{
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set_thread (ptid, 0);
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}
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/* Return nonzero if the thread TH is still alive on the remote system. */
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/* Return nonzero if the thread PTID is still alive on the remote
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system. */
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static int
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remote_thread_alive (ptid_t ptid)
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{
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struct remote_state *rs = get_remote_state ();
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int tid = PIDGET (ptid);
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int tid = ptid_get_tid (ptid);
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if (tid < 0)
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xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid);
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@ -1802,7 +1830,7 @@ remote_get_threadlist (int startflag, threadref *nextthread, int result_limit,
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/* remote_find_new_threads retrieves the thread list and for each
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thread in the list, looks up the thread in GDB's internal list,
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ading the thread if it does not already exist. This involves
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adding the thread if it does not already exist. This involves
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getting partial thread lists from the remote target so, polling the
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quit_flag is required. */
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@ -1853,9 +1881,8 @@ remote_threadlist_iterator (rmt_thread_action stepfunction, void *context,
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static int
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remote_newthread_step (threadref *ref, void *context)
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{
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ptid_t ptid;
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ptid = pid_to_ptid (threadref_to_int (ref));
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int pid = ptid_get_pid (inferior_ptid);
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ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref));
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if (!in_thread_list (ptid))
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add_thread (ptid);
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@ -1868,16 +1895,23 @@ static ptid_t
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remote_current_thread (ptid_t oldpid)
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{
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struct remote_state *rs = get_remote_state ();
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char *p = rs->buf;
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int tid;
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int pid;
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putpkt ("qC");
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getpkt (&rs->buf, &rs->buf_size, 0);
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if (rs->buf[0] == 'Q' && rs->buf[1] == 'C')
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/* Use strtoul here, so we'll correctly parse values whose highest
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bit is set. The protocol carries them as a simple series of
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hex digits; in the absence of a sign, strtol will see such
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values as positive numbers out of range for signed 'long', and
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return LONG_MAX to indicate an overflow. */
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return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16));
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{
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/* Use strtoul here, so we'll correctly parse values whose
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highest bit is set. The protocol carries them as a simple
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series of hex digits; in the absence of a sign, strtol will
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see such values as positive numbers out of range for signed
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'long', and return LONG_MAX to indicate an overflow. */
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tid = strtoul (&rs->buf[2], NULL, 16);
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pid = ptid_get_pid (oldpid);
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return ptid_build (pid, 0, tid);
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}
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else
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return oldpid;
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}
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@ -1891,7 +1925,8 @@ remote_find_new_threads (void)
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{
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remote_threadlist_iterator (remote_newthread_step, 0,
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CRAZY_MAX_THREADS);
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if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */
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if (ptid_equal (inferior_ptid, magic_null_ptid))
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/* We don't know the current thread yet. Query it. */
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inferior_ptid = remote_current_thread (inferior_ptid);
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}
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@ -1908,6 +1943,8 @@ remote_threads_info (void)
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struct remote_state *rs = get_remote_state ();
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char *bufp;
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int tid;
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int pid;
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ptid_t new_thread;
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if (remote_desc == 0) /* paranoia */
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error (_("Command can only be used when connected to the remote target."));
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@ -1930,8 +1967,10 @@ remote_threads_info (void)
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positive numbers out of range for signed 'long',
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and return LONG_MAX to indicate an overflow. */
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tid = strtoul (bufp, &bufp, 16);
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if (tid != 0 && !in_thread_list (pid_to_ptid (tid)))
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add_thread (pid_to_ptid (tid));
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pid = ptid_get_pid (inferior_ptid);
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new_thread = ptid_build (pid, 0, tid);
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if (tid != 0 && !in_thread_list (new_thread))
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add_thread (new_thread);
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}
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while (*bufp++ == ','); /* comma-separated list */
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putpkt ("qsThreadInfo");
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@ -1974,8 +2013,8 @@ remote_threads_extra_info (struct thread_info *tp)
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if (use_threadextra_query)
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{
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xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x",
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PIDGET (tp->ptid));
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xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%lx",
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ptid_get_tid (tp->ptid));
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putpkt (rs->buf);
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getpkt (&rs->buf, &rs->buf_size, 0);
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if (rs->buf[0] != 0)
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@ -1991,7 +2030,7 @@ remote_threads_extra_info (struct thread_info *tp)
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use_threadextra_query = 0;
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set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME
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| TAG_MOREDISPLAY | TAG_DISPLAY;
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int_to_threadref (&id, PIDGET (tp->ptid));
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int_to_threadref (&id, ptid_get_tid (tp->ptid));
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if (remote_get_threadinfo (&id, set, &threadinfo))
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if (threadinfo.active)
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{
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@ -2251,7 +2290,7 @@ remote_start_remote (struct ui_out *uiout, void *opaque)
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}
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/* Let the stub know that we want it to return the thread. */
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set_thread (-1, 0);
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set_continue_thread (minus_one_ptid);
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/* Without this, some commands which require an active target
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(such as kill) won't work. This variable serves (at least)
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@ -2260,7 +2299,7 @@ remote_start_remote (struct ui_out *uiout, void *opaque)
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These functions should be split out into seperate variables,
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especially since GDB will someday have a notion of debugging
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several processes. */
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inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
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inferior_ptid = magic_null_ptid;
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/* Now, if we have thread information, update inferior_ptid. */
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inferior_ptid = remote_current_thread (inferior_ptid);
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@ -2690,8 +2729,8 @@ remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended
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init_all_packet_configs ();
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rs->explicit_packet_size = 0;
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general_thread = -2;
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continue_thread = -2;
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general_thread = not_sent_ptid;
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continue_thread = not_sent_ptid;
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/* Probe for ability to use "ThreadInfo" query, as required. */
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use_threadinfo_query = 1;
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@ -2891,6 +2930,10 @@ extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty)
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target_mark_running (target);
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inferior_ptid = pid_to_ptid (pid);
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/* Now, if we have thread information, update inferior_ptid. */
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inferior_ptid = remote_current_thread (inferior_ptid);
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attach_flag = 1;
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/* Next, if the target can specify a description, read it. We do
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@ -3020,10 +3063,10 @@ remote_vcont_probe (struct remote_state *rs)
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/* Resume the remote inferior by using a "vCont" packet. The thread
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to be resumed is PTID; STEP and SIGGNAL indicate whether the
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resumed thread should be single-stepped and/or signalled. If PTID's
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PID is -1, then all threads are resumed; the thread to be stepped and/or
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signalled is given in the global INFERIOR_PTID. This function returns
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non-zero iff it resumes the inferior.
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resumed thread should be single-stepped and/or signalled. If PTID
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equals minus_one_ptid, then all threads are resumed; the thread to
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be stepped and/or signalled is given in the global INFERIOR_PTID.
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This function returns non-zero iff it resumes the inferior.
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This function issues a strict subset of all possible vCont commands at the
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moment. */
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@ -3032,7 +3075,6 @@ static int
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remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal)
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{
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struct remote_state *rs = get_remote_state ();
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int pid = PIDGET (ptid);
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char *outbuf;
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struct cleanup *old_cleanup;
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@ -3046,11 +3088,12 @@ remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal)
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about overflowing BUF. Should there be a generic
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"multi-part-packet" packet? */
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if (PIDGET (inferior_ptid) == MAGIC_NULL_PID)
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if (ptid_equal (ptid, magic_null_ptid))
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{
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/* MAGIC_NULL_PTID means that we don't have any active threads, so we
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don't have any PID numbers the inferior will understand. Make sure
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to only send forms that do not specify a PID. */
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/* MAGIC_NULL_PTID means that we don't have any active threads,
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so we don't have any TID numbers the inferior will
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understand. Make sure to only send forms that do not specify
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a TID. */
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if (step && siggnal != TARGET_SIGNAL_0)
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outbuf = xstrprintf ("vCont;S%02x", siggnal);
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else if (step)
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@ -3060,31 +3103,31 @@ remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal)
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else
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outbuf = xstrprintf ("vCont;c");
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}
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else if (pid == -1)
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else if (ptid_equal (ptid, minus_one_ptid))
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{
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/* Resume all threads, with preference for INFERIOR_PTID. */
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int tid = ptid_get_tid (inferior_ptid);
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if (step && siggnal != TARGET_SIGNAL_0)
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outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal,
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PIDGET (inferior_ptid));
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outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, tid);
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else if (step)
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outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid));
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outbuf = xstrprintf ("vCont;s:%x;c", tid);
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else if (siggnal != TARGET_SIGNAL_0)
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outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal,
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PIDGET (inferior_ptid));
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outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, tid);
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else
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outbuf = xstrprintf ("vCont;c");
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}
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else
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{
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/* Scheduler locking; resume only PTID. */
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int tid = ptid_get_tid (ptid);
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if (step && siggnal != TARGET_SIGNAL_0)
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outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid);
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outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, tid);
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else if (step)
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outbuf = xstrprintf ("vCont;s:%x", pid);
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outbuf = xstrprintf ("vCont;s:%x", tid);
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else if (siggnal != TARGET_SIGNAL_0)
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outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid);
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outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, tid);
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else
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outbuf = xstrprintf ("vCont;c:%x", pid);
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outbuf = xstrprintf ("vCont;c:%x", tid);
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}
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gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ());
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@ -3108,7 +3151,6 @@ remote_resume (ptid_t ptid, int step, enum target_signal siggnal)
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{
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struct remote_state *rs = get_remote_state ();
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char *buf;
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int pid = PIDGET (ptid);
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last_sent_signal = siggnal;
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last_sent_step = step;
|
||||
@ -3120,11 +3162,12 @@ remote_resume (ptid_t ptid, int step, enum target_signal siggnal)
|
||||
if (remote_vcont_resume (ptid, step, siggnal))
|
||||
goto done;
|
||||
|
||||
/* All other supported resume packets do use Hc, so call set_thread. */
|
||||
if (pid == -1)
|
||||
set_thread (0, 0); /* Run any thread. */
|
||||
/* All other supported resume packets do use Hc, so set the continue
|
||||
thread. */
|
||||
if (ptid_equal (ptid, minus_one_ptid))
|
||||
set_continue_thread (any_thread_ptid);
|
||||
else
|
||||
set_thread (pid, 0); /* Run this thread. */
|
||||
set_continue_thread (ptid);
|
||||
|
||||
buf = rs->buf;
|
||||
if (siggnal != TARGET_SIGNAL_0)
|
||||
@ -3347,9 +3390,7 @@ remote_console_output (char *msg)
|
||||
}
|
||||
|
||||
/* Wait until the remote machine stops, then return,
|
||||
storing status in STATUS just as `wait' would.
|
||||
Returns "pid", which in the case of a multi-threaded
|
||||
remote OS, is the thread-id. */
|
||||
storing status in STATUS just as `wait' would. */
|
||||
|
||||
static ptid_t
|
||||
remote_wait (ptid_t ptid, struct target_waitstatus *status)
|
||||
@ -3357,6 +3398,7 @@ remote_wait (ptid_t ptid, struct target_waitstatus *status)
|
||||
struct remote_state *rs = get_remote_state ();
|
||||
struct remote_arch_state *rsa = get_remote_arch_state ();
|
||||
ULONGEST thread_num = -1;
|
||||
ULONGEST process_num = -1;
|
||||
ULONGEST addr;
|
||||
int solibs_changed = 0;
|
||||
|
||||
@ -3453,7 +3495,6 @@ Packet: '%s'\n"),
|
||||
if (strncmp (p, "thread", p1 - p) == 0)
|
||||
{
|
||||
p_temp = unpack_varlen_hex (++p1, &thread_num);
|
||||
record_currthread (thread_num);
|
||||
p = p_temp;
|
||||
}
|
||||
else if ((strncmp (p, "watch", p1 - p) == 0)
|
||||
@ -3575,8 +3616,12 @@ Packet: '%s'\n"),
|
||||
got_status:
|
||||
if (thread_num != -1)
|
||||
{
|
||||
return pid_to_ptid (thread_num);
|
||||
ptid_t ptid;
|
||||
ptid = ptid_build (ptid_get_pid (inferior_ptid), 0, thread_num);
|
||||
record_currthread (ptid);
|
||||
return ptid;
|
||||
}
|
||||
|
||||
return inferior_ptid;
|
||||
}
|
||||
|
||||
@ -3779,7 +3824,7 @@ remote_fetch_registers (struct regcache *regcache, int regnum)
|
||||
struct remote_arch_state *rsa = get_remote_arch_state ();
|
||||
int i;
|
||||
|
||||
set_thread (PIDGET (inferior_ptid), 1);
|
||||
set_general_thread (inferior_ptid);
|
||||
|
||||
if (regnum >= 0)
|
||||
{
|
||||
@ -3928,7 +3973,7 @@ remote_store_registers (struct regcache *regcache, int regnum)
|
||||
struct remote_arch_state *rsa = get_remote_arch_state ();
|
||||
int i;
|
||||
|
||||
set_thread (PIDGET (inferior_ptid), 1);
|
||||
set_general_thread (inferior_ptid);
|
||||
|
||||
if (regnum >= 0)
|
||||
{
|
||||
@ -5107,7 +5152,7 @@ extended_remote_mourn_1 (struct target_ops *target)
|
||||
/* Assume that the target has been restarted. Set inferior_ptid
|
||||
so that bits of core GDB realizes there's something here, e.g.,
|
||||
so that the user can say "kill" again. */
|
||||
inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
|
||||
inferior_ptid = magic_null_ptid;
|
||||
}
|
||||
else
|
||||
{
|
||||
@ -5221,7 +5266,7 @@ extended_remote_create_inferior_1 (char *exec_file, char *args,
|
||||
|
||||
/* Now mark the inferior as running before we do anything else. */
|
||||
attach_flag = 0;
|
||||
inferior_ptid = pid_to_ptid (MAGIC_NULL_PID);
|
||||
inferior_ptid = magic_null_ptid;
|
||||
target_mark_running (&extended_remote_ops);
|
||||
|
||||
/* Get updated offsets, if the stub uses qOffsets. */
|
||||
@ -6143,7 +6188,7 @@ threadset_test_cmd (char *cmd, int tty)
|
||||
int sample_thread = SAMPLE_THREAD;
|
||||
|
||||
printf_filtered (_("Remote threadset test\n"));
|
||||
set_thread (sample_thread, 1);
|
||||
set_general_thread (sample_thread);
|
||||
}
|
||||
|
||||
|
||||
@ -6151,8 +6196,10 @@ static void
|
||||
threadalive_test (char *cmd, int tty)
|
||||
{
|
||||
int sample_thread = SAMPLE_THREAD;
|
||||
int pid = ptid_get_pid (inferior_ptid);
|
||||
ptid_t ptid = ptid_build (pid, 0, sample_thread);
|
||||
|
||||
if (remote_thread_alive (pid_to_ptid (sample_thread)))
|
||||
if (remote_thread_alive (ptid))
|
||||
printf_filtered ("PASS: Thread alive test\n");
|
||||
else
|
||||
printf_filtered ("FAIL: Thread alive test\n");
|
||||
@ -6265,10 +6312,21 @@ Fetch and print the remote list of thread identifiers, one pkt only"));
|
||||
static char *
|
||||
remote_pid_to_str (ptid_t ptid)
|
||||
{
|
||||
static char buf[32];
|
||||
static char buf[64];
|
||||
|
||||
xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid));
|
||||
return buf;
|
||||
if (ptid_equal (magic_null_ptid, ptid))
|
||||
{
|
||||
xsnprintf (buf, sizeof buf, "Thread <main>");
|
||||
return buf;
|
||||
}
|
||||
else if (ptid_get_tid (ptid) != 0)
|
||||
{
|
||||
xsnprintf (buf, sizeof buf, "Thread %ld",
|
||||
ptid_get_tid (ptid));
|
||||
return buf;
|
||||
}
|
||||
|
||||
return normal_pid_to_str (ptid);
|
||||
}
|
||||
|
||||
/* Get the address of the thread local variable in OBJFILE which is
|
||||
@ -6285,7 +6343,7 @@ remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)
|
||||
|
||||
strcpy (p, "qGetTLSAddr:");
|
||||
p += strlen (p);
|
||||
p += hexnumstr (p, PIDGET (ptid));
|
||||
p += hexnumstr (p, ptid_get_tid (ptid));
|
||||
*p++ = ',';
|
||||
p += hexnumstr (p, offset);
|
||||
*p++ = ',';
|
||||
@ -7479,4 +7537,10 @@ Tells gdb whether to control the remote inferior in asynchronous mode."),
|
||||
|
||||
/* Eventually initialize fileio. See fileio.c */
|
||||
initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist);
|
||||
|
||||
/* Take advantage of the fact that the LWP field is not used, to tag
|
||||
special ptids with it set to != 0. */
|
||||
magic_null_ptid = ptid_build (0, 1, -1);
|
||||
not_sent_ptid = ptid_build (0, 1, -2);
|
||||
any_thread_ptid = ptid_build (0, 1, 0);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user