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03f9b35114
The thread group info is not sufficient to represent a thread group's current state as it's read-only. We also need something comparable to the thread context to represent the aggregate state of the threads in that group. This patch introduces ha_tgroup_ctx[] and tg_ctx for this. It's indexed on the group id and must be cache-line aligned. The thread masks that were global and that do not need to remain global were moved there (want_rdv, harmless, idle). Given that all the masks placed there now become group-specific, the associated thread mask (tid_bit) now switches to the thread's local bit (ltid_bit). Both are the same for nbtgroups 1 but will differ for other values. There's also a tg_ctx pointer in the thread so that it can be reached from other threads.
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/*
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* include/haproxy/tinfo.h
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* Export of ha_thread_info[] and ti pointer.
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*
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* Copyright (C) 2020 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_TINFO_H
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#define _HAPROXY_TINFO_H
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#include <haproxy/api.h>
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#include <haproxy/tinfo-t.h>
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/* the structs are in thread.c */
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extern struct tgroup_info ha_tgroup_info[MAX_TGROUPS];
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extern THREAD_LOCAL const struct tgroup_info *tg;
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extern struct thread_info ha_thread_info[MAX_THREADS];
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extern THREAD_LOCAL const struct thread_info *ti; /* thread_info for the current thread */
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extern struct tgroup_ctx ha_tgroup_ctx[MAX_TGROUPS];
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extern THREAD_LOCAL struct tgroup_ctx *tg_ctx; /* ha_tgroup_ctx for the current thread */
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extern struct thread_ctx ha_thread_ctx[MAX_THREADS];
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extern THREAD_LOCAL struct thread_ctx *th_ctx; /* ha_thread_ctx for the current thread */
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#endif /* _HAPROXY_TINFO_H */
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