lto-ltrans-cache.cc File Reference

#include "config.h"
#include "system.h"
#include "sha1.h"
#include "lto-ltrans-cache.h"

Include dependency graph for lto-ltrans-cache.cc:

Macros
#define	INCLUDE_ALGORITHM
#define	INCLUDE_STRING
#define	INCLUDE_ARRAY
#define	INCLUDE_MAP
#define	INCLUDE_VECTOR

Functions
static checksum_t	file_checksum (char const *filename)
static bool	files_identical (char const *first_filename, char const *second_filename)
static ltrans_file_cache::item *	read_cache_item (FILE *f, const char *dir)
static void	write_cache_item (FILE *f, ltrans_file_cache::item *item, const char *dir)
static int	file_exists (char const *name)

Variables
static const checksum_t	NULL_CHECKSUM

Macro Definition Documentation

INCLUDE_ALGORITHM

#define INCLUDE_ALGORITHM

File caching.
   Copyright (C) 2023-2025 Free Software Foundation, Inc.

This file is part of GCC.

GCC 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 3, or (at your option) any later
version.

GCC 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 GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.   

INCLUDE_ARRAY

#define INCLUDE_ARRAY

INCLUDE_MAP

#define INCLUDE_MAP

INCLUDE_STRING

#define INCLUDE_STRING

INCLUDE_VECTOR

#define INCLUDE_VECTOR

Function Documentation

file_checksum()

static checksum_t file_checksum ( char const * filename )

static

Computes checksum for given file, returns NULL_CHECKSUM if not
possible.   

References fopen, and NULL_CHECKSUM.

Referenced by ltrans_file_cache::add_to_cache().

file_exists()

static int file_exists ( char const * name )

static

Returns true if file exists.   

References R_OK.

files_identical()

static bool files_identical ( char const * first_filename, char const * second_filename )

static

Checks identity of two files.   

References fopen, free(), map, MAP_FAILED, NULL, O_RDONLY, and S_ISREG.

Referenced by ltrans_file_cache::add_to_cache().

read_cache_item()

static ltrans_file_cache::item * read_cache_item ( FILE * f, const char * dir )

static

Reads next cache item from cachedata file.
Adds `dir/` prefix to filenames.   

References ltrans_file_cache::dir, and NULL.

Referenced by ltrans_file_cache::load_cache().

write_cache_item()

static void write_cache_item ( FILE * f, ltrans_file_cache::item * item, const char * dir )

static

Writes cache item to cachedata file.
Removes `dir/` prefix from filenames.   

References ltrans_file_cache::dir, fputc(), gcc_assert, ltrans_file_cache::item::input, ltrans_file_cache::item::input_checksum, ltrans_file_cache::item::last_used, and ltrans_file_cache::item::output.

Referenced by ltrans_file_cache::save_cache().

Variable Documentation

NULL_CHECKSUM

const checksum_t NULL_CHECKSUM

static

Initial value:

= {
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}

Referenced by file_checksum().