Release 4.18 tools/perf/util/target.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PERF_TARGET_H

#define _PERF_TARGET_H

#include <stdbool.h>
#include <sys/types.h>


struct target {
	
const char   *pid;
	
const char   *tid;
	
const char   *cpu_list;
	
const char   *uid_str;
	
uid_t	     uid;
	
bool	     system_wide;
	
bool	     uses_mmap;
	
bool	     default_per_cpu;
	
bool	     per_thread;
};


enum target_errno {
	
TARGET_ERRNO__SUCCESS		= 0,

	/*
         * Choose an arbitrary negative big number not to clash with standard
         * errno since SUS requires the errno has distinct positive values.
         * See 'Issue 6' in the link below.
         *
         * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
         */
	
__TARGET_ERRNO__START		= -10000,

	/* for target__validate() */
	
TARGET_ERRNO__PID_OVERRIDE_CPU	= __TARGET_ERRNO__START,
	
TARGET_ERRNO__PID_OVERRIDE_UID,
	
TARGET_ERRNO__UID_OVERRIDE_CPU,
	
TARGET_ERRNO__PID_OVERRIDE_SYSTEM,
	
TARGET_ERRNO__UID_OVERRIDE_SYSTEM,
	
TARGET_ERRNO__SYSTEM_OVERRIDE_THREAD,

	/* for target__parse_uid() */
	
TARGET_ERRNO__INVALID_UID,
	
TARGET_ERRNO__USER_NOT_FOUND,

	
__TARGET_ERRNO__END,
};

enum target_errno target__validate(struct target *target);
enum target_errno target__parse_uid(struct target *target);

int target__strerror(struct target *target, int errnum, char *buf, size_t buflen);



static inline bool target__has_task(struct target *target)
{
	return target->tid || target->pid || target->uid_str;
}

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static inline bool target__has_cpu(struct target *target)
{
	return target->system_wide || target->cpu_list;
}

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static inline bool target__none(struct target *target)
{
	return !target__has_task(target) && !target__has_cpu(target);
}

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static inline bool target__has_per_thread(struct target *target)
{
	return target->system_wide && target->per_thread;
}

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static inline bool target__uses_dummy_map(struct target *target)
{
	bool use_dummy = false;

	if (target->default_per_cpu)
		use_dummy = target->per_thread ? true : false;
	else if (target__has_task(target) ||
	         (!target__has_cpu(target) && !target->uses_mmap))
		use_dummy = true;
	else if (target__has_per_thread(target))
		use_dummy = true;

	return use_dummy;
}

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#endif /* _PERF_TARGET_H */
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7.69%
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Directory: tools/perf/util

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