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* Makefile.in: Build wincap.o.

Browse Source 
* wincap.cc: New file.
        * wincap.h: Ditto.
        * autoload.cc: Add dynamic load statement for `CreateHardLinkA'.
        * dcrt0.cc (os_being_run): Eliminated.
        (osname): Ditto.
        (iswinnt): Ditto.
        (set_os_type): Ditto.
        (dll_crt0_1): Call wincap.init() instead of set_os_type().
        (_dll_crt0): Ditto.
        * environ.cc (set_chunksize): New function.
        (parse_thing): `forkchunk' setting now invokes function `set_chunksize'.
        * fork.cc (chunksize): Eliminated. Moved to be member of wincap.
        * host_dependent.h: Removed.
        * syscalls.cc (_link): Try using `CreateHardLinkA' first, if available.
        * cygheap.cc, dcrt0.cc, delqueue.cc, dir.cc,
        environ.cc, fhandler.cc, fhandler.h, fhandler_console.cc,
        fhandler_mem.cc, fork.cc, mmap.cc, net.cc, pinfo.cc, pinfo.h,
        security.cc, syscalls.cc, sysconf.cc, syslog.cc, thread.cc,
        times.cc, tty.cc, uinfo.cc, uname.cc, winsup.h: Use new wincap
        capability check throughout.
        * winsup.h: Include wincap.h. Eliminate extern declarations of
        `os_being_run' and `iswinnt'. Eliminate `os_type" definition.
        * include/cygwin/version.h: Bump version to 1.3.4.
This commit is contained in:
Corinna Vinschen
2001-09-12 17:46:37 +00:00
parent c88bb51c3c
commit ba94682838
31 changed files with 707 additions and 246 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
winsup/cygwin/mmap.cc
View File

@@ -83,7 +83,7 @@ class mmap_record
/* Allocate one bit per page */
map_map_ = (DWORD *) calloc (MAPSIZE(PAGE_CNT (size_to_map_)),
sizeof (DWORD));
if (iswinnt)
if (wincap.virtual_protect_works_on_shared_pages ())
{
DWORD old_prot;
if (!VirtualProtect (base_address_, size_to_map_,
@@ -144,7 +144,7 @@ mmap_record::map_map (DWORD off, DWORD len)
off = find_empty (len);
if (off != (DWORD)-1)
{
if (iswinnt
if (wincap.virtual_protect_works_on_shared_pages ()
&& !VirtualProtect (base_address_ + off * getpagesize (),
len * getpagesize (), prot, &old_prot))
syscall_printf ("-1 = map_map (): %E");
@@ -157,7 +157,7 @@ mmap_record::map_map (DWORD off, DWORD len)
}
off -= offset_;
DWORD start = off / getpagesize ();
if (iswinnt
if (wincap.virtual_protect_works_on_shared_pages ()
&& !VirtualProtect (base_address_ + start * getpagesize (),
len * getpagesize (), prot, &old_prot))
syscall_printf ("-1 = map_map (): %E");
@@ -174,7 +174,7 @@ mmap_record::unmap_map (caddr_t addr, DWORD len)
DWORD off = addr - base_address_;
off /= getpagesize ();
len = PAGE_CNT (len);
if (iswinnt
if (wincap.virtual_protect_works_on_shared_pages ()
&& !VirtualProtect (base_address_ + off * getpagesize (),
len * getpagesize (), PAGE_NOACCESS, &old_prot))
syscall_printf ("-1 = unmap_map (): %E");
@@ -192,7 +192,7 @@ mmap_record::unmap_map (caddr_t addr, DWORD len)
void
mmap_record::fixup_map ()
{
if (!iswinnt)
if (!wincap.virtual_protect_works_on_shared_pages ())
return;
DWORD prot, old_prot;
@@ -426,7 +426,8 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t off)
/* copy-on-write doesn't work correctly on 9x. To have at least read
access we use *READ mapping on 9x when appropriate. It will still
fail when needing write access, though. */
if ((flags & MAP_PRIVATE) && (iswinnt || (prot & ~PROT_READ)))
if ((flags & MAP_PRIVATE) && (wincap.has_working_copy_on_write ()
|| (prot & ~PROT_READ)))
access = FILE_MAP_COPY;
SetResourceLock(LOCK_MMAP_LIST, READ_LOCK | WRITE_LOCK, "mmap");
@@ -437,7 +438,7 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, off_t off)
* CV: This assumption isn't correct. See Microsoft Platform SDK, Memory,
* description of call `MapViewOfFileEx'.
*/
if ((!iswinnt) && (flags & MAP_FIXED))
if ((!wincap.is_winnt ()) && (flags & MAP_FIXED))
{
set_errno (EINVAL);
syscall_printf ("-1 = mmap(): win95 and MAP_FIXED");
@@ -745,7 +746,7 @@ fhandler_disk_file::mmap (caddr_t *addr, size_t len, DWORD access,
/* On 9x/ME try first to open the mapping by name when opening a
shared file object. This is needed since 9x/ME only shares
objects between processes by name. What a mess... */
if (!iswinnt
if (wincap.share_mmaps_only_by_name ()
&& get_handle () != INVALID_HANDLE_VALUE
&& get_device () == FH_DISK
&& !(access & FILE_MAP_COPY))