/* Copyright (C) 2004 Benoît Dejean

   This file is part of LibGTop 2.0.

   LibGTop is free software; you can redistribute it and/or modify it

   under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License,

   or (at your option) any later version.

   LibGTop is distributed in the hope that it will be useful, but WITHOUT

   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

   for more details.

   You should have received a copy of the GNU General Public License

   along with LibGTop; see the file COPYING. If not, write to the

   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301, USA.

*/

#ifndef __LINUX__GLIBTOP_PRIVATE_H__

#define __LINUX__GLIBTOP_PRIVATE_H__

#include <glibtop.h>

#include <glibtop/error.h>

#include <glib.h>

#include <fcntl.h>

#include <ctype.h>

#include <string.h>

G_BEGIN_DECLS

#define LINUX_VERSION_CODE(x,y,z)   (0x10000*(x) + 0x100*(y) + z)

static inline char*

next_token(const char *p)

{

	while (g_ascii_isspace(*p)) p++;

	return (char*) p;

}

char *

skip_token (const char *p);

static inline char *

skip_multiple_token (const char *p, size_t count)

{

	while(count--)

		p = skip_token (p);

	return (char *)p;

}

static inline char *

skip_line (const char *p)

{

	while (*p && *p != '\n') p++;

	return (char *) (*p ? p+1 : p);

}

/*

 * Smart strtoul which handles binary suffixes

 * e.g: get_scaled("Size: 32 kB", "Size:") == 32768

 * key can be NULL if there's not prefix to strip (or prefix size is known

 */

unsigned long long

get_scaled(const char *buffer, const char *key);

/* aborts on error */

void

file_to_buffer(glibtop *server, char *buffer, size_t bufsiz, const char *filename);

/* return < 0 on error, otherwise 0 on success */

int

try_file_to_buffer(char *buffer, size_t bufsiz, const char *format, ...) G_GNUC_PRINTF(3, 4);

/* some inline functions that wrap proc path

 * as fast as macros :)

 */

static inline int

proc_file_to_buffer (char *buffer, size_t bufsiz, const char *fmt, pid_t pid)

{

	return try_file_to_buffer(buffer, bufsiz, fmt, pid);

}

static inline int

proc_stat_to_buffer (char *buffer, size_t bufsiz, pid_t pid)

{

	return proc_file_to_buffer(buffer, bufsiz, "/proc/%d/stat", pid);

}

static inline int

proc_status_to_buffer (char *buffer, size_t bufsiz, pid_t pid)

{

	return proc_file_to_buffer(buffer, bufsiz, "/proc/%d/status", pid);

}

static inline int

proc_statm_to_buffer (char *buffer, size_t bufsiz, pid_t pid)

{

	return proc_file_to_buffer(buffer, bufsiz, "/proc/%d/statm", pid);

}

static inline char *

proc_stat_after_cmd (char *p)

{

	p = strrchr (p, ')');

	if (G_LIKELY(p))

		*p++ = '\0';

	return p;

}

unsigned long

get_boot_time(glibtop *server);

gboolean

check_cpu_line(glibtop *server, const char *line, unsigned n);

static inline gboolean

check_cpu_line_warn(glibtop *server, const char *line, unsigned i)

{

	gboolean ret;

	ret = check_cpu_line(server, line, i);

	if (G_UNLIKELY(!ret))

		glibtop_warn_io_r(server,

				  "'%s' does not start with 'cpu%u'",

				  line, i);

	return ret;

}

gboolean

has_sysfs(void) G_GNUC_CONST;

gboolean safe_readlink(const char *path, char *buf, size_t bufsiz);

G_END_DECLS

#endif /* __LINUX__GLIBTOP_PRIVATE_H__ */