This is another preparation work for monitor OOB seires. This series tries to allow QIO code to run with non-default GMainContext. Note that for most places I kept the old code untouched, and only modified/introduced new interfaces where there can be a non-default GMainContext. The "where" is mostly migration and chardev submodules, since these two parts of code can be run with monitor IOThread in the future (which holds a non-default GMainContext).
These are existing known issue to be solved with GSources that bound to main thread: - migration - incoming side: still always running on main context, while we need to be able to run some command in OOB thread [1] - tcp chardev (non-tcp chardevs should all support non-NULL context now) - server listening mode: QIO net listener used [2] - TELNET session: an isolated GSource used (tcp_chr_telnet_init) [3] - when "reconnect=N" is used, QIO threaded task is used [4] - TLS session: QIO tls handshake is used (tcp_chr_tls_init) [5] Patch 1-2 are cleanups and fixes. Patch 3 introduced qio_channel_add_watch_full(), which is the core API for QIO to support non-default context. Patch 4 fixes the migration usage of QIO, which is problem [1] above. Patch 5-7 fixes the net listeners to use non-default gcontext, which solves problem [2] above. Patch 8 fixes the TELNET GSource, which solves problem [3]. Patch 9-13 fixes the threaded QIOTask usage, which is for problem [4]. Patch 14 fixes the last TLS usage, which is problem [5]. The whole series survives with "make check". There are quite a few QIO tests there. Let's see whether this can be acceptable before more tests. Please review. Thanks. Peter Xu (14): chardev: fix leak in tcp_chr_telnet_init_io() qio: rename qio_task_thread_result qio: introduce qio_channel_add_watch_full() migration: let incoming side use thread context qio: refactor net listener source operations qio: store gsources for net listeners qio/chardev: update net listener gcontext chardev: allow telnet gsource to switch gcontext qio: basic non-default context support for thread qio: refcount QIOTask qio/chardev: return QIOTask when connect async qio: move QIOTaskThreadData into QIOTask qio: allow threaded qiotask to switch contexts qio/chardev: specify gcontext for TLS handshake chardev/char-socket.c | 114 ++++++++++++++++++++++++++------- include/io/channel-socket.h | 14 +++-- include/io/channel-tls.h | 22 ++++++- include/io/channel.h | 31 ++++++++- include/io/net-listener.h | 33 +++++++++- include/io/task.h | 10 ++- io/channel-socket.c | 21 ++++--- io/channel-tls.c | 91 ++++++++++++++++++++++----- io/channel.c | 24 +++++-- io/dns-resolver.c | 3 +- io/net-listener.c | 119 +++++++++++++++++++++-------------- io/task.c | 149 ++++++++++++++++++++++++++++++++++++-------- migration/exec.c | 11 ++-- migration/fd.c | 11 ++-- migration/socket.c | 12 ++-- tests/test-io-task.c | 2 + 16 files changed, 514 insertions(+), 153 deletions(-) -- 2.14.3