Willy Tarreau 4b3f27b67f BUG/MINOR: haproxy/threads: try to make all threads leave together ...

There's a small issue with soft stop combined with the incoming
connection load balancing. A thread may dispatch a connection to
another one at the moment stopping=1 is set, and the second one could
stop by seeing (jobs - unstoppable_jobs) == 0 in run_poll_loop(),
without ever picking these connections from the queue. This is
visible in that it may occasionally cause a connection drop on
reload since no remaining thread will ever pick that connection
anymore.

In order to address this, this patch adds a stopping_thread_mask
variable by which threads acknowledge their willingness to stop
when their runqueue is empty. And all threads will only stop at
this moment, so that if finally some late work arrives in the
thread's queue, it still has a chance to process it.

This should be backported to 2.1 and 2.0.

2020-03-12 19:17:19 +01:00

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51d.c

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acl.c

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action.c

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activity.c

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applet.c

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arg.c

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auth.c

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backend.c

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base64.c

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buffer.c

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cache.c

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calltrace.c

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cfgparse-global.c

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cfgparse-listen.c

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cfgparse.c

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channel.c

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checks.c

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chunk.c

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cli.c

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compression.c

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connection.c

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da.c

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debug.c

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dict.c

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dns.c

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ev_epoll.c

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ev_evports.c

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ev_kqueue.c

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ev_poll.c

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ev_select.c

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fcgi-app.c

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fcgi.c

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fd.c

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filters.c

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flt_http_comp.c

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flt_spoe.c

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flt_trace.c

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freq_ctr.c

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frontend.c

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h1_htx.c

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h1.c

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h2.c

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haproxy.c

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hash.c

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hathreads.c

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hlua_fcn.c

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hlua.c

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hpack-dec.c

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hpack-enc.c

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hpack-huff.c

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hpack-tbl.c

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http_acl.c

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http_act.c

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http_ana.c

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http_conv.c

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http_fetch.c

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http_htx.c

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http_rules.c

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http.c

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htx.c

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lb_chash.c

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lb_fas.c

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lb_fwlc.c

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lb_fwrr.c

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lb_map.c

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listener.c

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log.c

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lru.c

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mailers.c

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map.c

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memory.c

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mux_fcgi.c

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mux_h1.c

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mux_h2.c

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mux_pt.c

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mworker-prog.c

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mworker.c

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namespace.c

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pattern.c

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payload.c

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peers.c

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pipe.c

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proto_sockpair.c

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proto_tcp.c

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proto_udp.c

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proto_uxst.c

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protocol.c

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proxy.c

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queue.c

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raw_sock.c

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regex.c

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ring.c

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sample.c

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server.c

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session.c

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sha1.c

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shctx.c

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signal.c

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sink.c

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ssl_sock.c

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standard.c

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stats.c

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stick_table.c

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stream_interface.c

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stream.c

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task.c

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tcp_rules.c

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time.c

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trace.c

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uri_auth.c

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vars.c

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version.c

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wdt.c

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wurfl.c

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xprt_handshake.c

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xxhash.c

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