aboutsummaryrefslogtreecommitdiff
path: root/bfd/cache.c
diff options
context:
space:
mode:
authorSteve Chamberlain <sac@cygnus>1991-12-12 00:42:50 +0000
committerSteve Chamberlain <sac@cygnus>1991-12-12 00:42:50 +0000
commitb645b63248888247d0d9757708b5ee4041ae3410 (patch)
treeacd87b4a2dbbc857aabda74fecdf8b1aece0d6cc /bfd/cache.c
parentc06ac69051aa08d9ae57f2c25d4e321fd5503b25 (diff)
downloadgdb-b645b63248888247d0d9757708b5ee4041ae3410.zip
gdb-b645b63248888247d0d9757708b5ee4041ae3410.tar.gz
gdb-b645b63248888247d0d9757708b5ee4041ae3410.tar.bz2
* makefile.dos, configdj.bat: New files from DJ
* cache.c: fopen with "b" is needed for DOS. * ieee.c: environ renamed to envi to stop an include file conflict. * opncls.c: more fopens with "b"
Diffstat (limited to 'bfd/cache.c')
-rw-r--r--bfd/cache.c177
1 files changed, 105 insertions, 72 deletions
diff --git a/bfd/cache.c b/bfd/cache.c
index be85f2b..d0d3f23 100644
--- a/bfd/cache.c
+++ b/bfd/cache.c
@@ -18,34 +18,38 @@ You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/*doc*
-@section File Caching
-The file caching mechanism is embedded within BFD and allows the application to open as many
-BFDs as it wants without regard to the underlying operating system's
-file descriptor limit (often as low as 20 open files).
-
-The module in @code{cache.c} maintains a least recently used list of
-@code{BFD_CACHE_MAX_OPEN} files, and exports the name
-@code{bfd_cache_lookup} which runs around and makes sure that the
-required BFD is open. If not, then it chooses a file to close, closes
-it and opens the one wanted, returning its file handle.
+/*
+SECTION
+ File Caching
+
+ The file caching mechanism is embedded within BFD and allows
+ the application to open as many BFDs as it wants without
+ regard to the underlying operating system's file descriptor
+ limit (often as low as 20 open files). The module in
+ <<cache.c>> maintains a least recently used list of
+ <<BFD_CACHE_MAX_OPEN>> files, and exports the name
+ <<bfd_cache_lookup>> which runs around and makes sure that
+ the required BFD is open. If not, then it chooses a file to
+ close, closes it and opens the one wanted, returning its file
+ handle.
*/
-
-
/* $Id$ */
-#include <sysdep.h>
+
#include "bfd.h"
+#include "sysdep.h"
#include "libbfd.h"
+/*
+INTERNAL_FUNCTION
+ BFD_CACHE_MAX_OPEN macro
-/*proto-internal* BFD_CACHE_MAX_OPEN
-The maxiumum number of files which the cache will keep open at one
-time.
-*+
-#define BFD_CACHE_MAX_OPEN 10
-*-
+DESCRIPTION
+ The maxiumum number of files which the cache will keep open at
+ one time.
+
+.#define BFD_CACHE_MAX_OPEN 10
*/
@@ -55,32 +59,38 @@ static int open_files;
static bfd *cache_sentinel; /* Chain of BFDs with active fds we've
opened */
-/*proto-internal* bfd_last_cache
-Zero, or a pointer to the topmost BFD on the chain. This is used by
-the @code{bfd_cache_lookup} macro in @file{libbfd.h} to determine when
-it can avoid a function call.
-*+
-extern bfd *bfd_last_cache;
-*-
+/*
+INTERNAL_FUNCTION
+ bfd_last_cache
+
+SYNOPSIS
+ extern bfd *bfd_last_cache;
+DESCRIPTION
+ Zero, or a pointer to the topmost BFD on the chain. This is
+ used by the <<bfd_cache_lookup>> macro in @file{libbfd.h} to
+ determine when it can avoid a function call.
*/
bfd *bfd_last_cache;
-/*proto-internal* bfd_cache_lookup
-Checks to see if the required BFD is the same as the last one looked
-up. If so then it can use the iostream in the BFD with impunity, since
-it can't have changed since the last lookup, otherwise it has to
-perform the complicated lookup function
-*+
-#define bfd_cache_lookup(x) \
- ((x)==bfd_last_cache? \
- (FILE*)(bfd_last_cache->iostream): \
- bfd_cache_lookup_worker(x))
-
-*-
-
-*/
+/*
+ * INTERNAL_FUNCTION
+ * bfd_cache_lookup
+ *
+ * DESCRIPTION
+ * Checks to see if the required BFD is the same as the last one
+ * looked up. If so then it can use the iostream in the BFD with
+ * impunity, since it can't have changed since the last lookup,
+ * otherwise it has to perform the complicated lookup function
+ *
+ * .#define bfd_cache_lookup(x) \
+ * . ((x)==bfd_last_cache? \
+ * . (FILE*)(bfd_last_cache->iostream): \
+ * . bfd_cache_lookup_worker(x))
+ *
+ *
+ */
static void bfd_cache_delete();
@@ -144,11 +154,16 @@ DEFUN(insert,(x,y),
}
-/*proto-internal*
-*i bfd_cache_init
-Initialize a BFD by putting it on the cache LRU.
-*; PROTO(void, bfd_cache_init, (bfd *));
-*-*/
+/*
+INTERNAL_FUNCTION
+ bfd_cache_init
+
+SYNOPSIS
+ void bfd_cache_init (bfd *);
+
+DESCRIPTION
+ Initialize a BFD by putting it on the cache LRU.
+*/
void
DEFUN(bfd_cache_init,(abfd),
@@ -158,11 +173,17 @@ DEFUN(bfd_cache_init,(abfd),
}
-/*proto-internal*
-*i bfd_cache_close
-Remove the BFD from the cache. If the attatched file is open, then close it too.
-*; PROTO(void, bfd_cache_close, (bfd *));
-*-*/
+/*
+INTERNAL_FUNCTION
+ bfd_cache_close
+
+DESCRIPTION
+ Remove the BFD from the cache. If the attached file is open,
+ then close it too.
+
+SYNOPSIS
+ void bfd_cache_close (bfd *);
+*/
void
DEFUN(bfd_cache_close,(abfd),
bfd *abfd)
@@ -174,15 +195,21 @@ DEFUN(bfd_cache_close,(abfd),
}
}
-/*proto-internal*
-*i bfd_open_file
-Call the OS to open a file for this BFD. Returns the FILE *
-(possibly null) that results from this operation. Sets up the
-BFD so that future accesses know the file is open. If the FILE *
-returned is null, then there is won't have been put in the cache, so
-it won't have to be removed from it.
-*; PROTO(FILE *, bfd_open_file, (bfd *));
-*-*/
+/*
+INTERNAL_FUNCTION
+ bfd_open_file
+
+DESCRIPTION
+ Call the OS to open a file for this BFD. Returns the FILE *
+ (possibly null) that results from this operation. Sets up the
+ BFD so that future accesses know the file is open. If the FILE
+ * returned is null, then there is won't have been put in the
+ cache, so it won't have to be removed from it.
+
+SYNOPSIS
+ FILE* bfd_open_file(bfd *);
+*/
+
FILE *
DEFUN(bfd_open_file, (abfd),
bfd *abfd)
@@ -194,18 +221,18 @@ DEFUN(bfd_open_file, (abfd),
switch (abfd->direction) {
case read_direction:
case no_direction:
- abfd->iostream = (char *) fopen(abfd->filename, "r");
+ abfd->iostream = (char *) fopen(abfd->filename, "rb");
break;
case both_direction:
case write_direction:
if (abfd->opened_once == true) {
- abfd->iostream = (char *) fopen(abfd->filename, "r+");
+ abfd->iostream = (char *) fopen(abfd->filename, "r+b");
if (!abfd->iostream) {
- abfd->iostream = (char *) fopen(abfd->filename, "w+");
+ abfd->iostream = (char *) fopen(abfd->filename, "w+b");
}
} else {
/*open for creat */
- abfd->iostream = (char *) fopen(abfd->filename, "w");
+ abfd->iostream = (char *) fopen(abfd->filename, "wb");
abfd->opened_once = true;
}
break;
@@ -218,15 +245,21 @@ DEFUN(bfd_open_file, (abfd),
return (FILE *)(abfd->iostream);
}
-/*proto-internal*
-*i bfd_cache_lookup_worker
-Called when the macro @code{bfd_cache_lookup} fails to find a quick
-answer. Finds a file descriptor for this BFD. If necessary, it open it.
-If there are already more than BFD_CACHE_MAX_OPEN files open, it trys to close
-one first, to avoid running out of file descriptors.
-*; PROTO(FILE *, bfd_cache_lookup_worker, (bfd *));
+/*
+INTERNAL_FUNCTION
+ bfd_cache_lookup_worker
+
+DESCRIPTION
+ Called when the macro <<bfd_cache_lookup>> fails to find a
+ quick answer. Finds a file descriptor for this BFD. If
+ necessary, it open it. If there are already more than
+ BFD_CACHE_MAX_OPEN files open, it trys to close one first, to
+ avoid running out of file descriptors.
-*-*/
+SYNOPSIS
+ FILE *bfd_cache_lookup_worker(bfd *);
+
+*/
FILE *
DEFUN(bfd_cache_lookup_worker,(abfd),