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* autoload.cc (NtCreateSection): Define.

Browse Source 
* cygheap.cc (_csbrk): Call getpagesize instead of getshmlba.
	* dcrt0.cc (dll_crt0_0): Call mmap_init.
	* external.cc (cygwin_internal): Call getpagesize instead of getshmlba.
	* fhandler.h (fhandler_base::mmap): Change access to prot parameter.
	(fhandler_base::fixup_mmap_after_fork): Ditto.
	(fhandler_disk_file::mmap): Ditto.
	(fhandler_disk_file::fixup_mmap_after_fork): Ditto.
	(fhandler_dev_mem::mmap): Ditto.
	(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
	* fhandler_mem.cc (fhandler_dev_mem::write): Call getsystempagesize
	instead of getpagesize.
	(fhandler_dev_mem::read): Ditto.
	(fhandler_dev_mem::fstat): Ditto.
	(fhandler_dev_mem::mmap): Move to mmap.cc.
	(fhandler_dev_mem::munmap): Ditto.
	(fhandler_dev_mem::msync): Ditto.
	(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
	* fhandler_proc.cc (format_proc_meminfo): Call getsystempagesize
	instead of getpagesize.
	* fhandler_process.cc (format_process_stat): Ditto.
	(format_process_status): Ditto.
	(get_mem_values): Ditto.
	* mmap.cc: Fix formatting.  Try to make more readable and modular.
	Take advantage of pagesize==granularity.
	(gen_protect): New static function to evaluate Windows
	protection bits from POSIX protection and flags.
	(gen_access): Ditto for Windows access mode.
	(VirtualProt9x): Wrapper function to call VirtualProtect on 9x.
	(VirtualProtNT): Ditto for NT.
	(VirtualProtEx9x): Ditto for VirtualProtectEx on 9x.
	(VirtualProtExNT): Ditto for NT.
	(CreateMapping9x): Wrapper function for creating a mapping handle on 9x.
	(CreateMappingNT): Ditto for NT.
	(MapView9x): Wrapper function to map a view on 9x.
	(MapViewNT): Ditto for NT.
	(mmap_funcs_9x): Structure containing function pointers to wrapper
	functions for 9x.
	(mmap_funcs_nt): Ditto for NT.
	(mmap_func): Pointer to wrapper functions used in subsequent code.
	(mmap_init): Initialize mmap_func depending on OS.
	(class mmap_record): Use sensible member names.  Add POSIX protection
	member. Drop Windows access flags member.  Constify more methods.
	Use accessors instead of direct member access inside of own methods.
	(mmap_record::gen_protect): Class wrapper to evaluate matching
	Windows protection bits.
	(mmap_record::gen_access): Ditto for Windows access flags.
	(mmap_record::compatible_flags): New function to check if flags are
	compatible with flags of existing map.
	(list::add_record): Drop offset and length arguments.
	(class map): Change counters to unsigned.  Match usage throughout.
	(mmapped_areas): Convert from pointer to global struct.
	(mmap_record::alloc_page_map): Simplify.
	(mmap_record::map_pages): Ditto.
	(mmap_record::fixup_page_map): Delete.
	(mmap64): Simplify.  Add workaround for Windows 98 bug.  Fix bug on
	NT that existing anonymous mappings weren't searched for a match.
	(munmap): Add workaround for Windows 98 bug.
	(msync): Simplify.
	(mprotect): Handle existing maps correctly.
	(mlock): Add local pagesize variable and enlightening comment.
	(fhandler_disk_file::mmap): Main functionality now in CreateMapping/
	MapView wrapper functions.
	(fhandler_disk_file::fixup_mmap_after_fork): Call MapView wrapper.
	(fhandler_dev_mem::mmap): Moved from fhandler_mem.cc.  Simplify by
	calling MapViewNT.
	(fhandler_dev_mem::munmap): Moved from fhandler_mem.cc.
	(fhandler_dev_mem::msync): Ditto.
	(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.  Call MapViewNT.
	(fixup_mmaps_after_fork): Restructure and hopefully speed up loop for
	setting protection and memory content on MAP_PRIVATE maps.
	* ntdll.h (AT_ROUND_TO_PAGE): Remove define.
	(AT_EXTENDABLE_FILE): Add define.
	(NtCreateSection): Add prototype.
	* syscalls.cc (getpagesize): Return granularity as pagesize now.
	(getsystempagesize): New function to retrieve "real" pagesize.
	(getshmlba): Delete since it's replaced by getpagesize now.
	* wincap.h (wincaps::has_mmap_alignment_bug): New element.
	* wincap.cc: Implement above element throughout.
	* winsup.h (getshmlba): Drop prototype.
	(getsystempagesize): Add prototype.
	(mmap_init): Ditto.
	* include/sys/mman.h: (Not yet) define MAP_NORESERVE.
This commit is contained in:
Corinna Vinschen 2005-11-28 22:32:29 +00:00
parent 87b69d9243
commit f90e23f271
16 changed files with 889 additions and 770 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

86
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,89 @@
2005-11-28 Corinna Vinschen <corinna@vinschen.de>
* autoload.cc (NtCreateSection): Define.
* cygheap.cc (_csbrk): Call getpagesize instead of getshmlba.
* dcrt0.cc (dll_crt0_0): Call mmap_init.
* external.cc (cygwin_internal): Call getpagesize instead of getshmlba.
* fhandler.h (fhandler_base::mmap): Change access to prot parameter.
(fhandler_base::fixup_mmap_after_fork): Ditto.
(fhandler_disk_file::mmap): Ditto.
(fhandler_disk_file::fixup_mmap_after_fork): Ditto.
(fhandler_dev_mem::mmap): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
* fhandler_mem.cc (fhandler_dev_mem::write): Call getsystempagesize
instead of getpagesize.
(fhandler_dev_mem::read): Ditto.
(fhandler_dev_mem::fstat): Ditto.
(fhandler_dev_mem::mmap): Move to mmap.cc.
(fhandler_dev_mem::munmap): Ditto.
(fhandler_dev_mem::msync): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto.
* fhandler_proc.cc (format_proc_meminfo): Call getsystempagesize
instead of getpagesize.
* fhandler_process.cc (format_process_stat): Ditto.
(format_process_status): Ditto.
(get_mem_values): Ditto.
* mmap.cc: Fix formatting. Try to make more readable and modular.
Take advantage of pagesize==granularity.
(gen_protect): New static function to evaluate Windows
protection bits from POSIX protection and flags.
(gen_access): Ditto for Windows access mode.
(VirtualProt9x): Wrapper function to call VirtualProtect on 9x.
(VirtualProtNT): Ditto for NT.
(VirtualProtEx9x): Ditto for VirtualProtectEx on 9x.
(VirtualProtExNT): Ditto for NT.
(CreateMapping9x): Wrapper function for creating a mapping handle on 9x.
(CreateMappingNT): Ditto for NT.
(MapView9x): Wrapper function to map a view on 9x.
(MapViewNT): Ditto for NT.
(mmap_funcs_9x): Structure containing function pointers to wrapper
functions for 9x.
(mmap_funcs_nt): Ditto for NT.
(mmap_func): Pointer to wrapper functions used in subsequent code.
(mmap_init): Initialize mmap_func depending on OS.
(class mmap_record): Use sensible member names. Add POSIX protection
member. Drop Windows access flags member. Constify more methods.
Use accessors instead of direct member access inside of own methods.
(mmap_record::gen_protect): Class wrapper to evaluate matching
Windows protection bits.
(mmap_record::gen_access): Ditto for Windows access flags.
(mmap_record::compatible_flags): New function to check if flags are
compatible with flags of existing map.
(list::add_record): Drop offset and length arguments.
(class map): Change counters to unsigned. Match usage throughout.
(mmapped_areas): Convert from pointer to global struct.
(mmap_record::alloc_page_map): Simplify.
(mmap_record::map_pages): Ditto.
(mmap_record::fixup_page_map): Delete.
(mmap64): Simplify. Add workaround for Windows 98 bug. Fix bug on
NT that existing anonymous mappings weren't searched for a match.
(munmap): Add workaround for Windows 98 bug.
(msync): Simplify.
(mprotect): Handle existing maps correctly.
(mlock): Add local pagesize variable and enlightening comment.
(fhandler_disk_file::mmap): Main functionality now in CreateMapping/
MapView wrapper functions.
(fhandler_disk_file::fixup_mmap_after_fork): Call MapView wrapper.
(fhandler_dev_mem::mmap): Moved from fhandler_mem.cc. Simplify by
calling MapViewNT.
(fhandler_dev_mem::munmap): Moved from fhandler_mem.cc.
(fhandler_dev_mem::msync): Ditto.
(fhandler_dev_mem::fixup_mmap_after_fork): Ditto. Call MapViewNT.
(fixup_mmaps_after_fork): Restructure and hopefully speed up loop for
setting protection and memory content on MAP_PRIVATE maps.
* ntdll.h (AT_ROUND_TO_PAGE): Remove define.
(AT_EXTENDABLE_FILE): Add define.
(NtCreateSection): Add prototype.
* syscalls.cc (getpagesize): Return granularity as pagesize now.
(getsystempagesize): New function to retrieve "real" pagesize.
(getshmlba): Delete since it's replaced by getpagesize now.
* wincap.h (wincaps::has_mmap_alignment_bug): New element.
* wincap.cc: Implement above element throughout.
* winsup.h (getshmlba): Drop prototype.
(getsystempagesize): Add prototype.
(mmap_init): Ditto.
* include/sys/mman.h: (Not yet) define MAP_NORESERVE.
2005-11-28 Corinna Vinschen <corinna@vinschen.de>
* fhandler_disk_file.cc (fhandler_base::fstat_helper): Don't rely on

1
winsup/cygwin/autoload.cc
View File

@ -379,6 +379,7 @@ LoadDLLfunc (NetUserGetInfo, 16, netapi32)
LoadDLLfunc (NetWkstaUserGetInfo, 12, netapi32)
LoadDLLfuncEx (NtCreateFile, 44, ntdll, 1)
LoadDLLfuncEx (NtCreateSection, 28, ntdll, 1)
LoadDLLfuncEx (NtCreateToken, 52, ntdll, 1)
LoadDLLfuncEx (NtLockVirtualMemory, 16, ntdll, 1)
LoadDLLfuncEx (NtMapViewOfSection, 40, ntdll, 1)

2
winsup/cygwin/cygheap.cc
View File

@ -137,7 +137,7 @@ static void *__stdcall
_csbrk (int sbs)
{
void *prebrk = cygheap_max;
size_t granmask = getshmlba () - 1;
size_t granmask = getpagesize () - 1;
char *newbase = nextpage (prebrk);
cygheap_max = (char *) cygheap_max + sbs;
if (!sbs || (newbase > cygheap_max) || (cygheap_max < _cygheap_end))

1
winsup/cygwin/dcrt0.cc
View File

@ -646,6 +646,7 @@ dll_crt0_0 ()
_impure_ptr->_current_locale = "C";
wincap.init ();
initial_env ();
mmap_init ();
if (!DuplicateHandle (GetCurrentProcess (), GetCurrentProcess (),
GetCurrentProcess (), &hMainProc, 0, FALSE,

3
winsup/cygwin/external.cc
View File

@ -28,6 +28,7 @@ details. */
#include "pwdgrp.h"
#include "cygtls.h"
#include "child_info.h"
#include <unistd.h>
child_info *get_cygwin_startup_info ();
@ -267,7 +268,7 @@ cygwin_internal (cygwin_getinfo_types t, ...)
}
case CW_GET_SHMLBA:
{
return getshmlba ();
return getpagesize ();
}
case CW_GET_UID_FROM_SID:
{

12
winsup/cygwin/fhandler.h
View File

@ -298,11 +298,11 @@ class fhandler_base
virtual int lock (int, struct __flock64 *);
virtual int dup (fhandler_base *child);
virtual HANDLE mmap (caddr_t *addr, size_t len, DWORD access,
virtual HANDLE mmap (caddr_t *addr, size_t len, int prot,
int flags, _off64_t off);
virtual int munmap (HANDLE h, caddr_t addr, size_t len);
virtual int msync (HANDLE h, caddr_t addr, size_t len, int flags);
virtual bool fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
virtual bool fixup_mmap_after_fork (HANDLE h, int prot, int flags,
_off64_t offset, DWORD size,
void *address);
@ -664,10 +664,10 @@ class fhandler_disk_file: public fhandler_base
int __stdcall link (const char *) __attribute__ ((regparm (2)));
int __stdcall utimes (const struct timeval *) __attribute__ ((regparm (2)));
HANDLE mmap (caddr_t *addr, size_t len, DWORD access, int flags, _off64_t off);
HANDLE mmap (caddr_t *addr, size_t len, int prot, int flags, _off64_t off);
int munmap (HANDLE h, caddr_t addr, size_t len);
int msync (HANDLE h, caddr_t addr, size_t len, int flags);
bool fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
bool fixup_mmap_after_fork (HANDLE h, int prot, int flags,
_off64_t offset, DWORD size, void *address);
int mkdir (mode_t mode);
int rmdir ();
@ -1083,10 +1083,10 @@ class fhandler_dev_mem: public fhandler_base
int __stdcall fstat (struct __stat64 *buf) __attribute__ ((regparm (2)));
int dup (fhandler_base *child);
HANDLE mmap (caddr_t *addr, size_t len, DWORD access, int flags, _off64_t off);
HANDLE mmap (caddr_t *addr, size_t len, int prot, int flags, _off64_t off);
int munmap (HANDLE h, caddr_t addr, size_t len);
int msync (HANDLE h, caddr_t addr, size_t len, int flags);
bool fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
bool fixup_mmap_after_fork (HANDLE h, int prot, int flags,
_off64_t offset, DWORD size, void *address);
} ;

145
winsup/cygwin/fhandler_mem.cc
View File

@ -136,7 +136,7 @@ fhandler_dev_mem::write (const void *ptr, size_t ulen)
PHYSICAL_ADDRESS phys;
NTSTATUS ret;
void *viewmem = NULL;
DWORD len = ulen + getpagesize () - 1;
DWORD len = ulen + getsystempagesize () - 1;
phys.QuadPart = (ULONGLONG) pos;
if ((ret = NtMapViewOfSection (get_handle (),
@ -188,7 +188,7 @@ fhandler_dev_mem::read (void *ptr, size_t& ulen)
PHYSICAL_ADDRESS phys;
NTSTATUS ret;
void *viewmem = NULL;
DWORD len = ulen + getpagesize () - 1;
DWORD len = ulen + getsystempagesize () - 1;
phys.QuadPart = (ULONGLONG) pos;
if ((ret = NtMapViewOfSection (get_handle (),
@ -251,150 +251,11 @@ fhandler_dev_mem::lseek (_off64_t offset, int whence)
return pos;
}
HANDLE
fhandler_dev_mem::mmap (caddr_t *addr, size_t len, DWORD access,
int flags, _off64_t off)
{
if (off >= mem_size
|| (DWORD) len >= mem_size
|| off + len >= mem_size)
{
set_errno (EINVAL);
syscall_printf ("-1 = mmap(): illegal parameter, set EINVAL");
return INVALID_HANDLE_VALUE;
}
UNICODE_STRING memstr;
RtlInitUnicodeString (&memstr, L"\\device\\physicalmemory");
OBJECT_ATTRIBUTES attr;
InitializeObjectAttributes (&attr, &memstr,
OBJ_CASE_INSENSITIVE | OBJ_INHERIT,
NULL, NULL);
ACCESS_MASK section_access;
ULONG protect;
if (access & FILE_MAP_COPY)
{
section_access = SECTION_MAP_READ | SECTION_MAP_WRITE;
protect = PAGE_WRITECOPY;
}
else if (access & FILE_MAP_WRITE)
{
section_access = SECTION_MAP_READ | SECTION_MAP_WRITE;
protect = PAGE_READWRITE;
}
else
{
section_access = SECTION_MAP_READ;
protect = PAGE_READONLY;
}
HANDLE h;
NTSTATUS ret = NtOpenSection (&h, section_access, &attr);
if (!NT_SUCCESS (ret))
{
__seterrno_from_nt_status (ret);
syscall_printf ("-1 = mmap(): NtOpenSection failed with %E");
return INVALID_HANDLE_VALUE;
}
PHYSICAL_ADDRESS phys;
void *base = *addr;
DWORD dlen = len;
phys.QuadPart = (ULONGLONG) off;
if ((ret = NtMapViewOfSection (h,
INVALID_HANDLE_VALUE,
&base,
0L,
dlen,
&phys,
&dlen,
ViewShare /*??*/,
0,
protect)) != STATUS_SUCCESS)
{
__seterrno_from_nt_status (ret);
syscall_printf ("-1 = mmap(): NtMapViewOfSection failed with %E");
return INVALID_HANDLE_VALUE;
}
if ((flags & MAP_FIXED) && base != *addr)
{
set_errno (EINVAL);
syscall_printf ("-1 = mmap(): address shift with MAP_FIXED given");
NtUnmapViewOfSection (INVALID_HANDLE_VALUE, base);
return INVALID_HANDLE_VALUE;
}
*addr = (caddr_t) base;
return h;
}
int
fhandler_dev_mem::munmap (HANDLE h, caddr_t addr, size_t len)
{
NTSTATUS ret;
if (!NT_SUCCESS (ret = NtUnmapViewOfSection (INVALID_HANDLE_VALUE, addr)))
{
__seterrno_from_nt_status (ret);
return -1;
}
CloseHandle (h);
return 0;
}
int
fhandler_dev_mem::msync (HANDLE h, caddr_t addr, size_t len, int flags)
{
return 0;
}
bool
fhandler_dev_mem::fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
_off64_t offset, DWORD size,
void *address)
{
DWORD ret;
PHYSICAL_ADDRESS phys;
void *base = address;
DWORD dlen = size;
ULONG protect;
if (access & FILE_MAP_COPY)
protect = PAGE_WRITECOPY;
else if (access & FILE_MAP_WRITE)
protect = PAGE_READWRITE;
else
protect = PAGE_READONLY;
phys.QuadPart = (ULONGLONG) offset;
if ((ret = NtMapViewOfSection (h,
INVALID_HANDLE_VALUE,
&base,
0L,
dlen,
&phys,
&dlen,
ViewShare /*??*/,
0,
protect)) != STATUS_SUCCESS)
{
__seterrno_from_nt_status (ret);
syscall_printf ("-1 = fixup_mmap_after_fork(): NtMapViewOfSection failed with %E");
return false;
}
return base == address;
}
int
fhandler_dev_mem::fstat (struct __stat64 *buf)
{
fhandler_base::fstat (buf);
buf->st_blksize = getpagesize ();
buf->st_blksize = getsystempagesize ();
if (is_auto_device ())
{
buf->st_mode = S_IFCHR;

5
winsup/cygwin/fhandler_proc.cc
View File

@ -435,8 +435,9 @@ format_proc_meminfo (char *destbuf, size_t maxsize)
PSYSTEM_PAGEFILE_INFORMATION spp = spi;
do
{
swap_total += spp->CurrentSize * getpagesize ();
swap_free += (spp->CurrentSize - spp->TotalUsed) * getpagesize ();
swap_total += spp->CurrentSize * getsystempagesize ();
swap_free += (spp->CurrentSize - spp->TotalUsed)
* getsystempagesize ();
}
while (spp->NextEntryOffset
&& (spp = (PSYSTEM_PAGEFILE_INFORMATION)

6
winsup/cygwin/fhandler_process.cc
View File

@ -708,7 +708,7 @@ format_process_stat (_pinfo *p, char *destbuf, size_t maxsize)
start_time = (spt.KernelTme.QuadPart + spt.UserTime.QuadPart) * HZ / 10000000ULL;
#endif
priority = pbi.BasePriority;
unsigned page_size = getpagesize ();
unsigned page_size = getsystempagesize ();
vmsize = vmc.PagefileUsage;
vmrss = vmc.WorkingSetSize / page_size;
vmmaxrss = ql.MaximumWorkingSetSize / page_size;
@ -788,7 +788,7 @@ format_process_status (_pinfo *p, char *destbuf, size_t maxsize)
{
if (!get_mem_values (p->dwProcessId, &vmsize, &vmrss, &vmtext, &vmdata, &vmlib, &vmshare))
return 0;
unsigned page_size = getpagesize ();
unsigned page_size = getsystempagesize ();
vmsize *= page_size; vmrss *= page_size; vmdata *= page_size;
vmtext *= page_size; vmlib *= page_size;
}
@ -918,7 +918,7 @@ get_mem_values (DWORD dwProcessId, unsigned long *vmsize, unsigned long *vmrss,
MEMORY_WORKING_SET_LIST *mwsl;
ULONG n = 0x1000, length;
PULONG p = (PULONG) malloc (sizeof (ULONG) * n);
unsigned page_size = getpagesize ();
unsigned page_size = getsystempagesize ();
hProcess = OpenProcess (PROCESS_QUERY_INFORMATION,
FALSE, dwProcessId);
if (hProcess == NULL)

5
winsup/cygwin/include/sys/mman.h
View File

@ -31,6 +31,11 @@ extern "C" {
#define MAP_ANONYMOUS 0x20
#define MAP_ANON MAP_ANONYMOUS
/* Non-standard flag */
#if 0 /* Not yet implemented */
#define MAP_NORESERVE 0x4000 /* Don't reserve swap space for this mapping.
Page protection must be set explicitely
to access page. */
#endif
#define MAP_AUTOGROW 0x8000 /* Grow underlying object to mapping size.
File must be opened for writing. */

1362
winsup/cygwin/mmap.cc
View File

File diff suppressed because it is too large Load Diff

4
winsup/cygwin/ntdll.h
View File

@ -24,7 +24,7 @@
#define WSLE_PAGE_SHARE_COUNT_MASK 0x0E0
#define WSLE_PAGE_SHAREABLE 0x100
#define AT_ROUND_TO_PAGE 0x40000000
#define AT_EXTENDABLE_FILE 0x00002000
#define LOCK_VM_IN_WSL 1
#define LOCK_VM_IN_RAM 2
@ -479,6 +479,8 @@ extern "C"
NTSTATUS NTAPI NtCreateFile (PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES,
PIO_STATUS_BLOCK, PLARGE_INTEGER, ULONG, ULONG,
ULONG, ULONG, PVOID, ULONG);
NTSTATUS NTAPI NtCreateSection (PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES,
PLARGE_INTEGER, ULONG, ULONG, HANDLE);
NTSTATUS NTAPI NtCreateToken (PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES,
TOKEN_TYPE, PLUID, PLARGE_INTEGER, PTOKEN_USER,
PTOKEN_GROUPS, PTOKEN_PRIVILEGES, PTOKEN_OWNER,

6
winsup/cygwin/syscalls.cc
View File

@ -1380,15 +1380,15 @@ getpagesize ()
{
if (!system_info.dwPageSize)
GetSystemInfo (&system_info);
return (int) system_info.dwPageSize;
return (size_t) system_info.dwAllocationGranularity;
}
size_t
getshmlba ()
getsystempagesize ()
{
if (!system_info.dwAllocationGranularity)
GetSystemInfo (&system_info);
return system_info.dwAllocationGranularity;
return (size_t) system_info.dwPageSize;
}
static int

13
winsup/cygwin/wincap.cc
View File

@ -37,6 +37,7 @@ static NO_COPY wincaps wincap_unknown = {
has_working_copy_on_write:false,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:false,
has_mmap_alignment_bug:false,
has_hard_links:false,
can_open_directories:false,
has_move_file_ex:false,
@ -90,6 +91,7 @@ static NO_COPY wincaps wincap_95 = {
has_working_copy_on_write:false,
share_mmaps_only_by_name:true,
virtual_protect_works_on_shared_pages:false,
has_mmap_alignment_bug:false,
has_hard_links:false,
can_open_directories:false,
has_move_file_ex:false,
@ -143,6 +145,7 @@ static NO_COPY wincaps wincap_95osr2 = {
has_working_copy_on_write:false,
share_mmaps_only_by_name:true,
virtual_protect_works_on_shared_pages:false,
has_mmap_alignment_bug:false,
has_hard_links:false,
can_open_directories:false,
has_move_file_ex:false,
@ -196,6 +199,7 @@ static NO_COPY wincaps wincap_98 = {
has_working_copy_on_write:false,
share_mmaps_only_by_name:true,
virtual_protect_works_on_shared_pages:false,
has_mmap_alignment_bug:true,
has_hard_links:false,
can_open_directories:false,
has_move_file_ex:false,
@ -249,6 +253,7 @@ static NO_COPY wincaps wincap_98se = {
has_working_copy_on_write:false,
share_mmaps_only_by_name:true,
virtual_protect_works_on_shared_pages:false,
has_mmap_alignment_bug:true,
has_hard_links:false,
can_open_directories:false,
has_move_file_ex:false,
@ -302,6 +307,7 @@ static NO_COPY wincaps wincap_me = {
has_working_copy_on_write:false,
share_mmaps_only_by_name:true,
virtual_protect_works_on_shared_pages:false,
has_mmap_alignment_bug:false,
has_hard_links:false,
can_open_directories:false,
has_move_file_ex:false,
@ -355,6 +361,7 @@ static NO_COPY wincaps wincap_nt3 = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,
@ -408,6 +415,7 @@ static NO_COPY wincaps wincap_nt4 = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,
@ -461,6 +469,7 @@ static NO_COPY wincaps wincap_nt4sp4 = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,
@ -514,6 +523,7 @@ static NO_COPY wincaps wincap_2000 = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,
@ -567,6 +577,7 @@ static NO_COPY wincaps wincap_xp = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,
@ -620,6 +631,7 @@ static NO_COPY wincaps wincap_2003 = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,
@ -673,6 +685,7 @@ static NO_COPY wincaps wincap_vista = {
has_working_copy_on_write:true,
share_mmaps_only_by_name:false,
virtual_protect_works_on_shared_pages:true,
has_mmap_alignment_bug:false,
has_hard_links:true,
can_open_directories:true,
has_move_file_ex:true,

2
winsup/cygwin/wincap.h
View File

@ -38,6 +38,7 @@ struct wincaps
unsigned has_working_copy_on_write : 1;
unsigned share_mmaps_only_by_name : 1;
unsigned virtual_protect_works_on_shared_pages : 1;
unsigned has_mmap_alignment_bug : 1;
unsigned has_hard_links : 1;
unsigned can_open_directories : 1;
unsigned has_move_file_ex : 1;
@ -105,6 +106,7 @@ public:
bool IMPLEMENT (has_working_copy_on_write)
bool IMPLEMENT (share_mmaps_only_by_name)
bool IMPLEMENT (virtual_protect_works_on_shared_pages)
bool IMPLEMENT (has_mmap_alignment_bug)
bool IMPLEMENT (has_hard_links)
bool IMPLEMENT (can_open_directories)
bool IMPLEMENT (has_move_file_ex)

6
winsup/cygwin/winsup.h
View File

@ -296,7 +296,11 @@ int fcntl_worker (int fd, int cmd, void *arg);
extern "C" int low_priority_sleep (DWORD) __attribute__ ((regparm (1)));
#define SLEEP_0_STAY_LOW INFINITE
size_t getshmlba ();
/* Returns the real page size, not the allocation size. */
size_t getsystempagesize ();
/* Init mmap function pointers. */
void mmap_init ();
int winprio_to_nice (DWORD) __attribute__ ((regparm (1)));
DWORD nice_to_winprio (int &) __attribute__ ((regparm (1)));