2001-04-30 Michael Snyder <msnyder@redhat.com>
* thread-db.c: Revert 2001-04-26 change for debugging output. * lin-lwp.c: Ditto. * lin-lwp.c: Add set/show debug lin-lwp command. Use this command to turn extra debugging output on / off.
This commit is contained in:
Michael Snyder
parent
540af40015
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7ca673cdc5
@ -1,7 +1,9 @@
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2001-04-30 Michael Snyder <msnyder@redhat.com>
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* thread-db.c: Revert 2001-04-26 change for debugging output.
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* lin-lwp.c: Ditto.
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* lin-lwp.c: Ditto.
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* lin-lwp.c: Add set/show debug lin-lwp command. Use this
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command to turn extra debugging output on / off.
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2001-04-27 Andrew Cagney <ac131313@redhat.com>
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@ -30,12 +30,10 @@
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#include "inferior.h"
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#include "target.h"
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#include "regcache.h"
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#include "gdbcmd.h"
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#define DEBUG 1
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#if DEBUG
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static int debug_lin_lwp;
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extern const char *strsignal (int sig);
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#endif
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/* On Linux there are no real LWP's. The closest thing to LWP's are
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processes sharing the same VM space. A multi-threaded process is
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@ -521,9 +519,9 @@ stop_wait_callback (struct lwp_info *lp, void *data)
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printf_unfiltered ("[%s exited]\n",
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target_pid_to_str (lp->pid));
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}
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#if DEBUG
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printf ("%s exited.\n", target_pid_to_str (lp->pid));
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#endif
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if (debug_lin_lwp)
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printf ("%s exited.\n", target_pid_to_str (lp->pid));
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delete_lwp (lp->pid);
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return 0;
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}
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@ -549,21 +547,22 @@ stop_wait_callback (struct lwp_info *lp, void *data)
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If we do not do this, then we run the risk that the
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user will delete or disable the breakpoint, but the
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thread will have already tripped on it. */
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#if DEBUG
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printf ("Tripped breakpoint at %lx in LWP %d"
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" while waiting for SIGSTOP.\n",
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(long) read_pc_pid (lp->pid), pid);
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#endif
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if (debug_lin_lwp)
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printf ("Tripped breakpoint at %lx in LWP %d"
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" while waiting for SIGSTOP.\n",
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(long) read_pc_pid (lp->pid), pid);
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/* Set the PC to before the trap. */
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if (DECR_PC_AFTER_BREAK)
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write_pc_pid (read_pc_pid (pid) - DECR_PC_AFTER_BREAK, pid);
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}
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else
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{
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#if DEBUG
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printf ("Received %s in LWP %d while waiting for SIGSTOP.\n",
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strsignal (WSTOPSIG (status)), pid);
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#endif
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if (debug_lin_lwp)
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printf ("Received %s in LWP %d while waiting for SIGSTOP.\n",
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strsignal (WSTOPSIG (status)), pid);
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/* The thread was stopped with a signal other than
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SIGSTOP, and didn't accidentiliy trip a breakpoint.
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Record the wait status. */
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@ -620,10 +619,10 @@ lin_lwp_wait (int pid, struct target_waitstatus *ourstatus)
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lp = iterate_over_lwps (status_callback, NULL);
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if (lp)
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{
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#if DEBUG
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printf ("Using pending wait status for LWP %d.\n",
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GET_LWP (lp->pid));
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#endif
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if (debug_lin_lwp)
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printf ("Using pending wait status for LWP %d.\n",
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GET_LWP (lp->pid));
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status = lp->status;
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lp->status = 0;
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}
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@ -635,19 +634,19 @@ lin_lwp_wait (int pid, struct target_waitstatus *ourstatus)
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}
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else if (is_lwp (pid))
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{
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#if DEBUG
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printf ("Waiting for specific LWP %d.\n", GET_LWP (pid));
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#endif
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if (debug_lin_lwp)
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printf ("Waiting for specific LWP %d.\n", GET_LWP (pid));
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/* We have a specific LWP to check. */
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lp = find_lwp_pid (GET_LWP (pid));
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gdb_assert (lp);
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status = lp->status;
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lp->status = 0;
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#if DEBUG
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if (status)
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if (debug_lin_lwp)
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if (status)
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printf ("Using pending wait status for LWP %d.\n",
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GET_LWP (lp->pid));
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#endif
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/* If we have to wait, take into account whether PID is a cloned
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process or not. And we have to convert it to something that
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@ -725,9 +724,9 @@ lin_lwp_wait (int pid, struct target_waitstatus *ourstatus)
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printf_unfiltered ("[%s exited]\n",
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target_pid_to_str (lp->pid));
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}
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#if DEBUG
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printf ("%s exited.\n", target_pid_to_str (lp->pid));
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#endif
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if (debug_lin_lwp)
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printf ("%s exited.\n", target_pid_to_str (lp->pid));
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delete_lwp (lp->pid);
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/* Make sure there is at least one thread running. */
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@ -743,10 +742,10 @@ lin_lwp_wait (int pid, struct target_waitstatus *ourstatus)
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if (lp->signalled && WIFSTOPPED (status)
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&& WSTOPSIG (status) == SIGSTOP)
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{
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#if DEBUG
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printf ("Delayed SIGSTOP caught for %s.\n",
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target_pid_to_str (lp->pid));
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#endif
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if (debug_lin_lwp)
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printf ("Delayed SIGSTOP caught for %s.\n",
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target_pid_to_str (lp->pid));
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/* This is a delayed SIGSTOP. */
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lp->signalled = 0;
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@ -1040,6 +1039,13 @@ _initialize_lin_lwp (void)
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sigdelset (&suspend_mask, SIGCHLD);
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sigemptyset (&blocked_mask);
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add_show_from_set (add_set_cmd ("lin-lwp", no_class, var_zinteger,
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(char *) &debug_lin_lwp,
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"Set debugging of linux lwp module.\n\
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Enables printf debugging output.\n",
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&setdebuglist),
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&showdebuglist);
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}
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