summaryrefslogtreecommitdiff
path: root/libio/libioP.h
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>1996-12-12 03:24:48 +0000
committerUlrich Drepper <drepper@redhat.com>1996-12-12 03:24:48 +0000
commitf8b87ef0d47ea0db7304a9c59d5479aebdaea347 (patch)
treeba0101df45ef63d6dc7321d4bdb91ee761c915da /libio/libioP.h
parent6259ec0d78fd301572fcb616fdfa0500b828a824 (diff)
downloadglibc-f8b87ef0d47ea0db7304a9c59d5479aebdaea347.tar.gz
update from main archive 961211
Thu Dec 12 03:32:21 1996 Ulrich Drepper <drepper@cygnus.com> * libio/_G_config.h: Add definition of _G_int16_t, _G_int32_t, _G_uint16_t, _G_uin32_t, _G_HAVE_BOOL, _G_HAVE_MMAP, and _G_ARGS. Change libio buffer handling to allocate internal buffers using mmap if possible. * libio/filedoalloc.c (_IO_file_doallocate): Change call to ALLOC_BUF. * libio/genops.c (_IO_setb, _IO_default_finish): Change call to FREE_BUF. (_IO_default_doallocate): Change call to ALLOC_BUF. * libio/libioP.h: Change definition of ALLOC_BUF and FREE_BUF to use mmap/munmap when possible. * libio/memstream.c: Don't use ALLOC_BUF, but directly malloc. * libio/vasprintf.c: Likewise. Patch by HJ Lu. * libio/libio.h: Define NULL as __null only for gcc-2.8 and up. * libio/libioP.h: Likewise. * libio/fileops.c (_IO_file_read, _IO_file_write): Don't restart syscall when EINTR was returned. Necessary for POSIX.1. * libio/strops.c (_IO_str_overflow): Add cast to prevent warning. * new-malloc/malloc.c (heap_trim): Correctly place parentheses to prevent warnings. * nis/Makefile: Remove rules for bsd-tools which are not part of glibc. Patch by Thorsten Kukuk. * nis/ypclnt.c: Add prototype for xdr_free. Add const to first parameter for __yp_bind. * nis/nss_compat/compat-pwd.c (getpwent_next_netgr, getpwent_next_nis, getpwent_next_file): Variable `p2len' must have type size_t. * nis/nss_nis/nis-alias.c: Add casts to prevent warnings. * nis/nss_nis/nis-ethers.c: Likewise. * nis/nss_nis/nis-grp.c: Likewise. * nis/nss_nis/nis-hosts.c: Likewise. * nis/nss_nis/nis-network.c: Likewise. * nis/nss_nis/nis-proto.c: Likewise. * nis/nss_nis/nis-pwd.c: Likewise. * nis/nss_nis/nis-rpc.c: Likewise. * nis/nss_nis/nis-service.c: Likewise. * nis/nss_nis/nis-spwd.c: Likewise. * nis/rpcsvc/yp_prot.h (ypreq_key): Change type of members to `const char *'. (ypmaplist): Change member names to `map' and `next' and provide #defines for old names. Patch by Thorsten Kukuk. * nss/nss_files/files-parse.c (parse_line, parse_list): Change type for `datalen' parameter to size_t. * shsdow/lckpwdf.c: Use fcntl forlocking, not flock. * stdio-common/printf.c [USE_IN_LIBIO]: Provide alias _IO_printf for printf. * stdio-common/sscanf.c [USE_IN_LIBIO]: Provide alias _IO_sscanf for sscanf. Patch by HJ Lu. * stdio-common/tmpfile.c: Update copyright. * stdio-common/vfscanf.c: Correctly handle EINTR error from fgetc function. Don't eat white space for `C' format. * stdlib/tst-strtol.c [~0UL != 0xffffffff]: Fix typo in test data. * sysdeps/generic/abort.c: Update copyright. De-ANSI-declfy. * sysdeps/i386/abort.c: Removed. This version does not use signal SIGABRT. * sysdeps/i386/fpu/__math.h: Define __NO_MATH_INLINES if not using gcc-2.8 or up. Patch by HJ Lu. * sysdeps/posix/tempname.c: Test for error but EEXIST after open call. If EMFILE, ENFILE, or EINTR return with error. Wed Dec 11 14:43:52 1996 Ulrich Drepper <drepper@cygnus.com> * gnu-versions.h: Set _GNU_OBSTACK_INTERFACE_VERSION back to 1. We are compatible again. * new-malloc/obstack.h (struct obstack): Add back alloc_failed bit even though it is not used. * malloc/obstack.h: Likewise. * new-malloc/obstack.c (_obstack_begin, _obstack_begin_1): Initialize alloc_failed bit to 0. * time/strftime.c: Extend for Emacs' needs. Recognize field width, %P format and `0' modifier. Tue Dec 10 21:20:44 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * Makerules (make-link): Don't discard exit codes of intermediate commands. Always use rellns-sh if symbolic links are available. Tue Dec 10 20:09:51 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/netinet/in.h: Enclose #include <linux/in.h> in __BEGIN_DECLS/__END_DECLS to avoid linkage conflict of ntohs etc. in <asm/byteorder.h>.
Diffstat (limited to 'libio/libioP.h')
-rw-r--r--libio/libioP.h51
1 files changed, 48 insertions, 3 deletions
diff --git a/libio/libioP.h b/libio/libioP.h
index 008f9b7edf..c9a639ab9a 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -396,7 +396,8 @@ extern void (*_IO_cleanup_registration_needed) __P ((void));
#define EOF (-1)
#endif
#ifndef NULL
-#ifdef __GNUG__
+#if defined __GNUG__ && \
+ (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
#define NULL (__null)
#else
#if !defined(__cplusplus)
@@ -407,8 +408,52 @@ extern void (*_IO_cleanup_registration_needed) __P ((void));
#endif
#endif
-#define FREE_BUF(_B) free(_B)
-#define ALLOC_BUF(_S) (char*)malloc(_S)
+#if _G_HAVE_MMAP
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+
+#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
+#if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
+#undef _G_HAVE_MMAP
+#define _G_HAVE_MMAP 0
+#endif
+
+#endif /* _G_HAVE_MMAP */
+
+#if _G_HAVE_MMAP
+
+#define ROUND_TO_PAGE(_S) \
+ (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
+
+#define FREE_BUF(_B, _S) \
+ munmap ((_B), ROUND_TO_PAGE (_S))
+#define ALLOC_BUF(_B, _S, _R) \
+ do { \
+ (_B) = (char *) mmap (0, ROUND_TO_PAGE (_S), \
+ PROT_READ | PROT_WRITE, \
+ MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); \
+ if ((_B) == (char *) -1) \
+ return (_R); \
+ } while (0)
+
+#else /* _G_HAVE_MMAP */
+
+#define FREE_BUF(_B, _S) \
+ free(_B)
+#define ALLOC_BUF(_B, _S, _R) \
+ do { \
+ (_B) = (char*)malloc(_S); \
+ if ((_B) == NULL) \
+ return (_R); \
+ } while (0)
+
+#endif /* _G_HAVE_MMAP */
#ifndef OS_FSTAT
#define OS_FSTAT fstat