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Add backlink from lwp_info to thread_info.

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* gdbthread.h (add_thread): Change result type to struct thread_info *.
	* inferiors.c (add_thread): Change result type to struct thread_info *.
	All callers updated.
	(add_lwp): Call add_thread here instead of in callers.
	All callers updated.
	* linux-low.h (get_lwp_thread): Rewrite.
	(struct lwp_info): New member "thread".

This speeds up gdbserver attach in non-stop mode because now get_lwp_thread
doesn't do a linear search for the corresponding thread_info object.
This commit is contained in:
Doug Evans
2014-02-19 16:38:44 -08:00
parent b3312d8019
commit f7667f0de6
5 changed files with 21 additions and 8 deletions
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4
gdb/gdbserver/linux-low.c
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@ -409,7 +409,6 @@ handle_extended_wait (struct lwp_info *event_child, int wstat)
ptid = ptid_build (pid_of (event_child), new_pid, 0);
new_lwp = add_lwp (ptid);
add_thread (ptid, new_lwp);
/* Either we're going to immediately resume the new thread
or leave it stopped. linux_resume_one_lwp is a nop if it
@ -539,6 +538,7 @@ add_lwp (ptid_t ptid)
lwp->arch_private = the_low_target.new_thread ();
add_inferior_to_list (&all_lwps, &lwp->entry);
lwp->thread = add_thread (ptid, lwp);
return lwp;
}
@ -632,7 +632,6 @@ linux_create_inferior (char *program, char **allargs)
ptid = ptid_build (pid, pid, 0);
new_lwp = add_lwp (ptid);
add_thread (ptid, new_lwp);
new_lwp->must_set_ptrace_flags = 1;
return pid;
@ -683,7 +682,6 @@ linux_attach_lwp_1 (unsigned long lwpid, int initial)
}
new_lwp = add_lwp (ptid);
add_thread (ptid, new_lwp);
/* We need to wait for SIGSTOP before being able to make the next
ptrace call on this LWP. */