#include "config.h"
#include "system.h"
+#include <dirent.h>
#include "coretypes.h"
#include "tm.h"
#include "cpplib.h"
/* This structure is used for the table of all includes. */
struct include_file {
const char *name; /* actual path name of file */
+ const char *header_name; /* the original header found */
const cpp_hashnode *cmacro; /* macro, if any, preventing reinclusion. */
const struct search_path *foundhere;
/* location in search path where file was
unsigned short include_count; /* number of times file has been read */
unsigned short refcnt; /* number of stacked buffers using this file */
unsigned char mapped; /* file buffer is mmapped */
+ unsigned char pch; /* 0: file not known to be a PCH.
+ 1: file is a PCH
+ (on return from find_include_file).
+ 2: file is not and never will be a valid
+ precompiled header.
+ 3: file is always a valid precompiled
+ header. */
};
/* Variable length record files on VMS will have a stat size that includes
((inc)->cmacro && ((inc)->cmacro == NEVER_REREAD \
|| (inc)->cmacro->type == NT_MACRO))
#define NO_INCLUDE_PATH ((struct include_file *) -1)
+#define INCLUDE_PCH_P(F) (((F)->pch & 1) != 0)
static struct file_name_map *read_name_map
PARAMS ((cpp_reader *, const char *));
find_include_file PARAMS ((cpp_reader *, const cpp_token *,
enum include_type));
static struct include_file *open_file PARAMS ((cpp_reader *, const char *));
+static struct include_file *validate_pch PARAMS ((cpp_reader *,
+ const char *,
+ const char *));
+static struct include_file *open_file_pch PARAMS ((cpp_reader *,
+ const char *));
static int read_include_file PARAMS ((cpp_reader *, struct include_file *));
static bool stack_include_file PARAMS ((cpp_reader *, struct include_file *));
static void purge_cache PARAMS ((struct include_file *));
{
file = xcnew (struct include_file);
file->name = name;
+ file->header_name = name;
file->err_no = errno;
node = splay_tree_insert (pfile->all_include_files,
(splay_tree_key) file->name,
return 0;
}
+static struct include_file *
+validate_pch (pfile, filename, pchname)
+ cpp_reader *pfile;
+ const char *filename;
+ const char *pchname;
+{
+ struct include_file * file;
+
+ file = open_file (pfile, pchname);
+ if (file == NULL)
+ return NULL;
+ if ((file->pch & 2) == 0)
+ file->pch = pfile->cb.valid_pch (pfile, pchname, file->fd);
+ if (INCLUDE_PCH_P (file))
+ {
+ file->header_name = _cpp_simplify_pathname (xstrdup (filename));
+ return file;
+ }
+ close (file->fd);
+ file->fd = -1;
+ return NULL;
+}
+
+
+/* Like open_file, but also look for a precompiled header if (a) one exists
+ and (b) it is valid. */
+static struct include_file *
+open_file_pch (pfile, filename)
+ cpp_reader *pfile;
+ const char *filename;
+{
+ if (filename[0] != '\0'
+ && pfile->cb.valid_pch != NULL)
+ {
+ size_t namelen = strlen (filename);
+ char *pchname = alloca (namelen + 5);
+ struct include_file * file;
+ splay_tree_node nd;
+
+ memcpy (pchname, filename, namelen);
+ memcpy (pchname + namelen, ".pch", 5);
+
+ nd = find_or_create_entry (pfile, pchname);
+ file = (struct include_file *) nd->value;
+
+ if (file != NULL)
+ {
+ if (stat (file->name, &file->st) == 0 && S_ISDIR (file->st.st_mode))
+ {
+ DIR * thedir;
+ struct dirent *d;
+ size_t subname_len = namelen + 64;
+ char *subname = xmalloc (subname_len);
+
+ thedir = opendir (pchname);
+ if (thedir == NULL)
+ return NULL;
+ memcpy (subname, pchname, namelen + 4);
+ subname[namelen+4] = '/';
+ while ((d = readdir (thedir)) != NULL)
+ {
+ if (strlen (d->d_name) + namelen + 7 > subname_len)
+ {
+ subname_len = strlen (d->d_name) + namelen + 64;
+ subname = xrealloc (subname, subname_len);
+ }
+ strcpy (subname + namelen + 5, d->d_name);
+ file = validate_pch (pfile, filename, subname);
+ if (file)
+ break;
+ }
+ closedir (thedir);
+ free (subname);
+ }
+ else
+ file = validate_pch (pfile, filename, pchname);
+ if (file)
+ return file;
+ }
+ }
+ return open_file (pfile, filename);
+}
+
/* Place the file referenced by INC into a new buffer on the buffer
stack, unless there are errors, or the file is not re-included
because of e.g. multiple-include guards. Returns true if a buffer
deps_add_dep (pfile->deps, inc->name);
}
+ /* PCH files get dealt with immediately. */
+ if (INCLUDE_PCH_P (inc))
+ {
+ pfile->cb.read_pch (pfile, inc->name, inc->fd, inc->header_name);
+ close (inc->fd);
+ inc->fd = -1;
+ return false;
+ }
+
/* Not in cache? */
if (! inc->buffer)
{
char *name, *n;
if (IS_ABSOLUTE_PATHNAME (fname))
- return open_file (pfile, fname);
+ return open_file_pch (pfile, fname);
/* For #include_next, skip in the search path past the dir in which
the current file was found, but if it was found via an absolute
else
n = name;
- file = open_file (pfile, n);
+ file = open_file_pch (pfile, n);
if (file)
{
file->foundhere = path;
cpp_reader *pfile;
const char *fname;
{
+ /* This uses open_file, because we don't allow a PCH to be used as
+ the toplevel compilation (that would prevent re-compiling an
+ existing PCH without deleting it first). */
struct include_file *f = open_file (pfile, fname);
if (f == NULL)
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