tools/perf/ui/progress.c

Source file repositories/reference/linux-study-clean/tools/perf/ui/progress.c

File Facts

System
Linux kernel
Corpus path
tools/perf/ui/progress.c
Extension
.c
Size
920 bytes
Lines
48
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include "progress.h"

static void null_progress__update(struct ui_progress *p __maybe_unused)
{
}

static struct ui_progress_ops null_progress__ops =
{
	.update = null_progress__update,
};

struct ui_progress_ops *ui_progress__ops = &null_progress__ops;

void ui_progress__update(struct ui_progress *p, u64 adv)
{
	u64 last = p->curr;

	p->curr += adv;

	if (p->curr >= p->next) {
		u64 nr = DIV_ROUND_UP(p->curr - last, p->step);

		p->next += nr * p->step;
		ui_progress__ops->update(p);
	}
}

void __ui_progress__init(struct ui_progress *p, u64 total,
			 const char *title, bool size)
{
	p->curr = 0;
	p->next = p->step = total / 16 ?: 1;
	p->total = total;
	p->title = title;
	p->size  = size;

	if (ui_progress__ops->init)
		ui_progress__ops->init(p);
}

void ui_progress__finish(void)
{
	if (ui_progress__ops->finish)
		ui_progress__ops->finish();
}

Annotation

Implementation Notes