diff options
| -rw-r--r-- | gdb/ChangeLog | 6 | ||||
| -rw-r--r-- | gdb/procfs.c | 36 |
2 files changed, 36 insertions, 6 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index a156625..ae79f49 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +Sun Oct 17 02:06:01 1993 Stu Grossman (grossman at cygnus.com) + + * procfs.c: Handle process exits more elegantly by trapping on + entry to _exit. Also, cleanup procinfo list when process dies of + it's own accord (as opposed to being killed). + Sat Oct 16 20:47:30 1993 Jim Kingdon (kingdon@lioth.cygnus.com) * config/m88k/xm-dgux.h: Define NO_PTRACE_H. diff --git a/gdb/procfs.c b/gdb/procfs.c index a18cc18..9a6937d 100644 --- a/gdb/procfs.c +++ b/gdb/procfs.c @@ -581,6 +581,7 @@ wait_fd () print_sys_errmsg (pi->pathname, errno); error ("PIOCWSTOP failed"); } + pi->had_event = 1; #endif if (attach_flag) @@ -1258,11 +1259,6 @@ NOTES static void procfs_kill_inferior () { - struct procinfo *pi; - - for (pi = procinfo_list; pi; pi = pi->next) - unconditionally_kill_inferior (pi); - target_mourn_inferior (); } @@ -1617,6 +1613,7 @@ static void proc_set_exec_trap () { sysset_t exitset; + sysset_t entryset; auto char procname[32]; int fd; @@ -1628,6 +1625,7 @@ proc_set_exec_trap () _exit (127); } premptyset (&exitset); + premptyset (&entryset); /* GW: Rationale... Not all systems with /proc have all the exec* syscalls with the same @@ -1641,7 +1639,7 @@ proc_set_exec_trap () praddset (&exitset, SYS_execve); #endif #ifdef SYS_execv - praddset(&exitset, SYS_execv); + praddset (&exitset, SYS_execv); #endif if (ioctl (fd, PIOCSEXIT, &exitset) < 0) @@ -1651,6 +1649,15 @@ proc_set_exec_trap () _exit (127); } + praddset (&entryset, SYS_exit); + + if (ioctl (fd, PIOCSENTRY, &entryset) < 0) + { + perror (procname); + fflush (stderr); + _exit (126); + } + /* Turn off inherit-on-fork flag so that all grand-children of gdb start with tracing flags cleared. */ @@ -2273,6 +2280,18 @@ wait_again: case PR_SIGNALLED: statval = (what << 8) | 0177; break; + case PR_SYSENTRY: + if (what != SYS_exit) + error ("PR_SYSENTRY, unknown system call %d", what); + + pi->prrun.pr_flags = PRCFAULT; + + if (ioctl (pi->fd, PIOCRUN, &pi->prrun) != 0) + perror_with_name (pi->pathname); + + rtnval = wait (&statval); + + break; case PR_SYSEXIT: switch (what) { @@ -3461,6 +3480,11 @@ procfs_create_inferior (exec_file, allargs, env) static void procfs_mourn_inferior () { + struct procinfo *pi; + + for (pi = procinfo_list; pi; pi = pi->next) + unconditionally_kill_inferior (pi); + unpush_target (&procfs_ops); generic_mourn_inferior (); } |