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e65f54cf96
Till now the CPUs that were bound were only retrieved in thread_cpus_enabled() in order to count the number of CPUs allowed, and it relied on arch-specific code. Let's slightly arrange this into ha_cpuset_detect_bound() that reuses the ha_cpuset struct and the accompanying code. This makes the code much clearer without having to carry along some arch-specific stuff out of this area. Note that the macos-specific code used in thread.c to only count online CPUs but not retrieve a mask, so for now we can't infer anything from it and can't implement it. In addition and more importantly, this function is reliable in that it will only return a value when the detection is accurate, and will not return incomplete sets on operating systems where we don't have an exact list, such as online CPUs.
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
#ifndef _HAPROXY_CPUSET_H
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#define _HAPROXY_CPUSET_H
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#include <haproxy/cpuset-t.h>
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extern struct cpu_map cpu_map[MAX_TGROUPS];
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/* Unset all indexes in <set>.
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*/
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void ha_cpuset_zero(struct hap_cpuset *set);
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/* Set <cpu> index in <set> if not present.
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* Returns 0 on success otherwise non-zero.
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*/
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int ha_cpuset_set(struct hap_cpuset *set, int cpu);
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/* Clear <cpu> index in <set> if present.
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* Returns 0 on success otherwise non-zero.
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*/
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int ha_cpuset_clr(struct hap_cpuset *set, int cpu);
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/* Bitwise and equivalent operation between <src> and <dst> stored in <dst>.
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*/
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void ha_cpuset_and(struct hap_cpuset *dst, struct hap_cpuset *src);
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/* Bitwise OR equivalent operation between <src> and <dst> stored in <dst>.
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*/
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void ha_cpuset_or(struct hap_cpuset *dst, struct hap_cpuset *src);
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/* returns non-zero if CPU index <cpu> is set in <set>, otherwise 0. */
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int ha_cpuset_isset(const struct hap_cpuset *set, int cpu);
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/* Returns the count of set index in <set>.
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*/
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int ha_cpuset_count(const struct hap_cpuset *set);
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/* Returns the first index set plus one in <set> starting from the lowest.
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* Returns 0 if no index set.
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* Do not forget to subtract the result by one if using it for set/clr.
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*/
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int ha_cpuset_ffs(const struct hap_cpuset *set);
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/* Copy <src> set into <dst>.
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*/
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void ha_cpuset_assign(struct hap_cpuset *dst, struct hap_cpuset *src);
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/* Returns the biggest index plus one usable on the platform.
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*/
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int ha_cpuset_size(void);
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/* Detects CPUs that are bound to the current process. Returns the number of
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* CPUs detected or 0 if the detection failed.
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*/
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int ha_cpuset_detect_bound(struct hap_cpuset *set);
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/* Returns true if at least one cpu-map directive was configured, otherwise
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* false.
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*/
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int cpu_map_configured(void);
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#endif /* _HAPROXY_CPUSET_H */
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