From 87b0bb13cbbea83ec1896b3ab915c8ce48ab6d44 Mon Sep 17 00:00:00 2001 From: Jan Kratochvil Date: Tue, 13 Mar 2012 15:02:25 +0000 Subject: gdb/ * common/linux-procfs.c (linux_proc_get_int): New, from linux_proc_get_tgid, change its LWPID type to pid_t, add parameter field. (linux_proc_get_tgid): Only call linux_proc_get_int. (linux_proc_get_tracerpid): New. (linux_proc_pid_has_state): New, from linux_proc_pid_is_zombie. (linux_proc_pid_is_stopped, linux_proc_pid_is_zombie): Only call linux_proc_pid_has_state. * common/linux-procfs.h (linux_proc_get_tracerpid): New declaration. * common/linux-ptrace.c: Include linux-procfs.h and buffer.h. (linux_ptrace_attach_warnings): New. * common/linux-ptrace.h (struct buffer, linux_ptrace_attach_warnings): New declaration. * linux-nat.c: Include exceptions.h, linux-ptrace.h and buffer.h. (linux_nat_attach): New variables ex, buffer, message and message_s. Wrap to_attach by TRY_CATCH and call linux_ptrace_attach_warnings. gdb/gdbserver/ * linux-low.c (linux_attach_lwp_1): New variable buffer. Call linux_ptrace_attach_warnings. gdb/testsuite/ * gdb.base/attach-twice.c: New files. * gdb.base/attach-twice.exp: New files. --- gdb/common/linux-ptrace.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'gdb/common/linux-ptrace.c') diff --git a/gdb/common/linux-ptrace.c b/gdb/common/linux-ptrace.c index 6dea677..600dcb9 100644 --- a/gdb/common/linux-ptrace.c +++ b/gdb/common/linux-ptrace.c @@ -24,3 +24,26 @@ #endif #include "linux-ptrace.h" +#include "linux-procfs.h" +#include "buffer.h" + +/* Find all possible reasons we could fail to attach PID and append these + newline terminated reason strings to initialized BUFFER. '\0' termination + of BUFFER must be done by the caller. */ + +void +linux_ptrace_attach_warnings (pid_t pid, struct buffer *buffer) +{ + pid_t tracerpid; + + tracerpid = linux_proc_get_tracerpid (pid); + if (tracerpid > 0) + buffer_xml_printf (buffer, _("warning: process %d is already traced " + "by process %d\n"), + (int) pid, (int) tracerpid); + + if (linux_proc_pid_is_zombie (pid)) + buffer_xml_printf (buffer, _("warning: process %d is a zombie " + "- the process has already terminated\n"), + (int) pid); +} -- cgit v1.1