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* [Bug server/29796] New: gdbserver should imply --once if connected via stdio @ 2022-11-16 19:40 pedro at palves dot net 2022-11-16 19:41 ` [Bug server/29796] " simon.marchi at polymtl dot ca ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: pedro at palves dot net @ 2022-11-16 19:40 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29796 Bug ID: 29796 Summary: gdbserver should imply --once if connected via stdio Product: gdb Version: HEAD Status: NEW Severity: normal Priority: P2 Component: server Assignee: unassigned at sourceware dot org Reporter: pedro at palves dot net Target Milestone: --- (gdb) target extended-remote | gdbserver --multi - Remote debugging using | gdbserver --multi - Remote debugging using stdio (gdb) quit * hang for 5 seconds * You get the hang plus the PIPE_CLOSE_TIMEOUT timeout, because gdbserver hangs while writing: "Remote side has terminated connection. GDBserver will reopen the connection.\n" to stderr. Like so: (gdb) bt #0 0x00007fa124ff9077 in __GI___libc_write (fd=2, buf=0x560d25e89158, nbytes=78) at ../sysdeps/unix/sysv/linux/write.c:26 #1 0x00007fa124f79e8d in _IO_new_file_write (f=0x7fa1250d85c0 <_IO_2_1_stderr_>, data=0x560d25e89158, n=78) at fileops.c:1176 #2 0x00007fa124f7a7a8 in new_do_write (to_do=<optimized out>, data=0x560d25e89158 "Remote side has terminated connection. GDBserver will reopen the connection.\n", fp=0x7fa1250d85c0 <_IO_2_1_stderr_>) at libioP.h:948 #3 _IO_new_file_xsputn (n=78, data=<optimized out>, f=<optimized out>) at fileops.c:1255 #4 _IO_new_file_xsputn (f=0x7fa1250d85c0 <_IO_2_1_stderr_>, data=<optimized out>, n=78) at fileops.c:1197 #5 0x00007fa124f6e3c1 in __GI__IO_fwrite (buf=0x560d25e89158, size=1, count=78, fp=0x7fa1250d85c0 <_IO_2_1_stderr_>) at libioP.h:948 #6 0x0000560d25e081c4 in captured_main (argc=3, argv=0x7ffcfd97ceb8) at ../../src/gdbserver/server.cc:4145 #7 0x0000560d25e0840f in main (argc=3, argv=0x7ffcfd97ceb8) at ../../src/gdbserver/server.cc:4211 If you pass --once to gdbserver, then the hang disappears, since gdbserver exits as soon as the connection closes: (gdb) target extended-remote | gdbserver --once --multi - Remote debugging using | ../gdbserver/gdbserver --once --multi - Remote debugging using stdio (gdb) q $ # got back the shell prompt immediately. I'm thinking that gdbserver should auto-imply --once when connected via stdio. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug server/29796] gdbserver should imply --once if connected via stdio 2022-11-16 19:40 [Bug server/29796] New: gdbserver should imply --once if connected via stdio pedro at palves dot net @ 2022-11-16 19:41 ` simon.marchi at polymtl dot ca 2023-12-29 0:29 ` tromey at sourceware dot org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: simon.marchi at polymtl dot ca @ 2022-11-16 19:41 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29796 Simon Marchi <simon.marchi at polymtl dot ca> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |good-first-bug CC| |simon.marchi at polymtl dot ca -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug server/29796] gdbserver should imply --once if connected via stdio 2022-11-16 19:40 [Bug server/29796] New: gdbserver should imply --once if connected via stdio pedro at palves dot net 2022-11-16 19:41 ` [Bug server/29796] " simon.marchi at polymtl dot ca @ 2023-12-29 0:29 ` tromey at sourceware dot org 2024-06-12 13:54 ` tromey at sourceware dot org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: tromey at sourceware dot org @ 2023-12-29 0:29 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29796 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tromey at sourceware dot org --- Comment #1 from Tom Tromey <tromey at sourceware dot org> --- Similar to bug#21454 If we want real remote/local parity, with the goal of replacing the nat- targets with gdbserver, then I think this is a scenario that should work without implying --once. So, gdb shutdown should somehow cause a clean shutdown of gdbserver. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug server/29796] gdbserver should imply --once if connected via stdio 2022-11-16 19:40 [Bug server/29796] New: gdbserver should imply --once if connected via stdio pedro at palves dot net 2022-11-16 19:41 ` [Bug server/29796] " simon.marchi at polymtl dot ca 2023-12-29 0:29 ` tromey at sourceware dot org @ 2024-06-12 13:54 ` tromey at sourceware dot org 2024-06-12 14:37 ` mark at klomp dot org 2024-06-12 14:43 ` mark at klomp dot org 4 siblings, 0 replies; 6+ messages in thread From: tromey at sourceware dot org @ 2024-06-12 13:54 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29796 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |b.r.longbons at gmail dot com --- Comment #2 from Tom Tromey <tromey at sourceware dot org> --- *** Bug 21454 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug server/29796] gdbserver should imply --once if connected via stdio 2022-11-16 19:40 [Bug server/29796] New: gdbserver should imply --once if connected via stdio pedro at palves dot net ` (2 preceding siblings ...) 2024-06-12 13:54 ` tromey at sourceware dot org @ 2024-06-12 14:37 ` mark at klomp dot org 2024-06-12 14:43 ` mark at klomp dot org 4 siblings, 0 replies; 6+ messages in thread From: mark at klomp dot org @ 2024-06-12 14:37 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29796 Mark Wielaard <mark at klomp dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mark at klomp dot org -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug server/29796] gdbserver should imply --once if connected via stdio 2022-11-16 19:40 [Bug server/29796] New: gdbserver should imply --once if connected via stdio pedro at palves dot net ` (3 preceding siblings ...) 2024-06-12 14:37 ` mark at klomp dot org @ 2024-06-12 14:43 ` mark at klomp dot org 4 siblings, 0 replies; 6+ messages in thread From: mark at klomp dot org @ 2024-06-12 14:43 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=29796 --- Comment #3 from Mark Wielaard <mark at klomp dot org> --- Patch posted: https://inbox.sourceware.org/gdb-patches/20240524211541.378520-1-wqferr@gmail.com/ Duplicate patch (now withdrawn, in favor of the above) for the same issue: https://inbox.sourceware.org/gdb-patches/20240611221916.3146658-1-mark@klomp.org/ -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2024-06-12 14:43 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-11-16 19:40 [Bug server/29796] New: gdbserver should imply --once if connected via stdio pedro at palves dot net 2022-11-16 19:41 ` [Bug server/29796] " simon.marchi at polymtl dot ca 2023-12-29 0:29 ` tromey at sourceware dot org 2024-06-12 13:54 ` tromey at sourceware dot org 2024-06-12 14:37 ` mark at klomp dot org 2024-06-12 14:43 ` mark at klomp dot org
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