remove() implemented directly without glue trampoline.

[pdclib] / internals / _PDCLIB_glue.h

diff --git a/internals/_PDCLIB_glue.h b/internals/_PDCLIB_glue.h
index f19e25071a7f8cb495bb88278b1559f8de692ade..68f37e7827ee5f7f6684afcd213a778a3cb85e38 100644 (file)
--- a/internals/_PDCLIB_glue.h
+++ b/internals/_PDCLIB_glue.h
@@ -1,16 +1,20 @@
-/* $Id$ */
-
-/* Release $Name$ */
-
 /* OS glue functions declaration <_PDCLIB_glue.h>
 
    This file is part of the Public Domain C Library (PDCLib).
    Permission is granted to use, modify, and / or redistribute at will.
 */
 
-#ifndef _PDCLIB_INT_H
-#define _PDCLIB_INT_H _PDCLIB_INT_H
-#include <_PDCLIB_int.h>
+#ifndef __PDCLIB_GLUE_H
+#define __PDCLIB_GLUE_H __PDCLIB_GLUE_H
+
+#include "_PDCLIB_int.h"
+#include "_PDCLIB_io.h"
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
 #endif
 
 /* -------------------------------------------------------------------------- */
@@ -20,43 +24,53 @@
 /* They operate on data types partially defined by _PDCLIB_config.h.          */
 /* -------------------------------------------------------------------------- */
 
+/* stdlib.h */
+
 /* A system call that terminates the calling process, returning a given status
    to the environment.
 */
-void _PDCLIB_Exit( int status ) _PDCLIB_NORETURN;
+_PDCLIB_noreturn void _PDCLIB_Exit( int status );
 
-/* A system call that adds n pages of memory to the process heap (if n is
-   positive), or releases n pages from the process heap (if n is negative).
-   Return a (void *) pointing to the *former* end-of-heap if successful, NULL
-   otherwise.
+/* A system call which allocates n pages of memory and returns a pointer to 
+   them. On failure, returns NULL
 */
-void * _PDCLIB_allocpages( int n );
+void * _PDCLIB_allocpages( size_t n );
 
-/* A system call that opens a file identified by name in a given mode, and
-   returns a file descriptor uniquely identifying that file.
-*/
-_PDCLIB_fd_t _PDCLIB_open( char const * const filename, int mode );
+/* A system call which frees the n pages of memory pointed to by p */
+void _PDCLIB_freepages( void * p, size_t n );
 
-/* A system call that writes n characters to a file identified by given file
-   descriptor. Return the number of characters written.
-*/
-_PDCLIB_size_t _PDCLIB_write( _PDCLIB_fd_t fd, char const * buffer, _PDCLIB_size_t n );
+#ifdef _PDCLIB_HAVE_REALLOCPAGES
+/* A system call which attempts to reallocate the group of \p on pages starting
+   at \p p, resizing the chunk to be \p nn pages long. If \p mayMove is true, 
+   then then the group of pages may move; otherwise, if the group cannot be 
+   resized in its current position, failure must be reported.
 
-/* A system call that reads n characters into a buffer, from a file identified
-   by given file descriptor. Return the number of characters read.
+   On failure, returns NULL; on success, returns the address of the group of 
+   pages (if mayMove == false, then this must be equal to \p p)
 */
-_PDCLIB_size_t _PDCLIB_read( _PDCLIB_fd_t fd, char * buffer, _PDCLIB_size_t n );
+void * _PDCLIB_reallocpages( void* p, size_t on, size_t nn, bool mayMove);
+#endif
 
-/* A system call that closes a file identified by given file descriptor. */
-void _PDCLIB_close( _PDCLIB_fd_t fd );
+/* stdio.h */
 
-/* A system call that removes a file identified by name. Return zero on success,
-   non-zero otherwise.
-*/
-int _PDCLIB_remove( const char * filename );
+/* Open the file with the given name and mode. Return the file descriptor in 
+ * *fd and a pointer to the operations structure in **ops on success.
+ *
+ * Return true on success and false on failure.
+ */
+bool _PDCLIB_open( 
+   _PDCLIB_fd_t* fd, const _PDCLIB_fileops_t** ops,
+   char const * filename, unsigned int mode );
 
 /* A system call that renames a file from given old name to given new name.
    Return zero on success, non-zero otherwise. In case of failure, the file
-   must still be accessible by old name.
+   must still be accessible by old name. Any handling of open files etc. is
+   done by standard rename() already.
 */
-int _PDCLIB_rename( const char * old, const char * new );
+int _PDCLIB_rename( const char * old, const char * newn);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif