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synced 2025-08-09 16:47:18 +02:00
97da942ba6
We're only checking for 0, 1, or >1 groups enabled there, and we'll soon need to be more precise and know quickly which groups are non-empty. Let's just replace the count with a mask of enabled groups. This will allow to quickly spot the presence of any such group in a set.
121 lines
3.6 KiB
C
121 lines
3.6 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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#include <haproxy/intops.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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/* returns the number of threads set in set <ts>. */
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static inline int thread_set_count(const struct thread_set *ts)
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{
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int i, n;
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/* iterating over tgroups guarantees to visit all possible threads, the
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* opposite is not true.
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*/
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for (i = n = 0; i < MAX_TGROUPS; i++)
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n += my_popcountl(ts->rel[i]);
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return n;
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}
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/* returns zero if the thread set <ts> has at least one thread set,
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* otherwise non-zero.
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*/
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static inline int thread_set_is_empty(const struct thread_set *ts)
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{
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int i;
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/* iterating over tgroups guarantees to visit all possible threads, the
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* opposite is not true.
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*/
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for (i = 0; i < MAX_TGROUPS; i++)
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if (ts->rel[i])
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return 0;
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return 1;
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}
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/* returns the number starting at 1 of the <n>th thread-group set in thread set
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* <ts>, or zero if the set is empty or if thread numbers are only absolute.
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* <n> starts at zero and corresponds to the number of non-empty groups to be
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* skipped (i.e. 0 returns the first one).
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*/
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static inline int thread_set_nth_group(const struct thread_set *ts, int n)
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{
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int i;
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if (ts->grps) {
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for (i = 0; i < MAX_TGROUPS; i++)
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if (ts->rel[i] && !n--)
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return i + 1;
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}
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return 0;
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}
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/* returns the thread mask of the <n>th assigned thread-group in the thread
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* set <ts> for relative sets, the first thread mask at all in case of absolute
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* sets, or zero if the set is empty. This is only used temporarily to ease the
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* transition. <n> starts at zero and corresponds to the number of non-empty
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* groups to be skipped (i.e. 0 returns the first one).
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*/
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static inline ulong thread_set_nth_tmask(const struct thread_set *ts, int n)
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{
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int i;
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if (ts->grps) {
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for (i = 0; i < MAX_TGROUPS; i++)
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if (ts->rel[i] && !n--)
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return ts->rel[i];
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}
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return ts->abs[0];
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}
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/* Pins the thread set to the specified thread mask on group 1 (use ~0UL for
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* all threads). This is for compatibility with some rare legacy code. If a
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* "thread" directive on a bind line is parsed, this one will be overwritten.
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*/
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static inline void thread_set_pin_grp1(struct thread_set *ts, ulong mask)
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{
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int i;
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ts->grps = 1;
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ts->rel[0] = mask;
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for (i = 1; i < MAX_TGROUPS; i++)
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ts->rel[i] = 0;
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}
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#endif /* _HAPROXY_TINFO_H */
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