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* fhandler.h (class fhandler_base): Declare fixup_mmap_after_fork

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with additional flags parameter.  Change offset parameter to _off64_t.
	(class fhandler_disk_file): Ditto.
	(class fhandler_dev_mem): Ditto.
	* fhandler_mem.cc (fhandler_dev_mem::fixup_mmap_after_fork):
	Accomodate new parameters.
	* mmap.cc: Include ntdll.h.
	(class mmap_record): Add flags member.
	(mmap_record::mmap_record): Add flags parameter.
	(mmap_record::get_flags): New method.
	(class map): Add next_anon_addr member to store next anonymous mapping
	address suggestion.
	(map::get_next_anon_addr): New method.
	(map::set_next_anon_addr): New method.
	(mmap64): Don't align offset and length to granularity in case of
	MAP_ANONYMOUS on NT.  Check for already existing mapping only on 9x.
	Call mmap_record::mmap_record with additional flags argument.
	(fhandler_base::fixup_mmap_after_fork): Accomodate new parameters.
	(fhandler_disk_file::mmap): Use NtMapViewOfSection with
	AT_ROUND_TO_PAGE flag for anonymous mappings on NT.  If addr is NULL,
	try to map adjacent to previous mapping.
	(fhandler_disk_file::fixup_mmap_after_fork): Add flags argument.
	Change offset parameter to _off64_t.  Use NtMapViewOfSection to
	re-create anonymous mappings on NT.
	(fixup_mmaps_after_fork): Accomodate new parameters when calling
	fhandler's fixup_mmaps_after_fork function.
	* ntdll.h (AT_ROUND_TO_PAGE): New define.
This commit is contained in:
Corinna Vinschen
2005-02-25 21:23:15 +00:00
parent 99e281eb19
commit 6d11044c63
5 changed files with 176 additions and 68 deletions
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13
winsup/cygwin/fhandler.h
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@@ -285,8 +285,9 @@ class fhandler_base
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, DWORD offset,
DWORD size, void *address);
virtual bool fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
_off64_t offset, DWORD size,
void *address);
void *operator new (size_t, void *p) {return p;}
@@ -633,8 +634,8 @@ class fhandler_disk_file: public fhandler_base
HANDLE mmap (caddr_t *addr, size_t len, DWORD access, 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, DWORD offset,
DWORD size, void *address);
bool fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
_off64_t offset, DWORD size, void *address);
DIR *opendir ();
struct dirent *readdir (DIR *);
_off64_t telldir (DIR *);
@@ -1055,8 +1056,8 @@ class fhandler_dev_mem: public fhandler_base
HANDLE mmap (caddr_t *addr, size_t len, DWORD access, 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, DWORD offset,
DWORD size, void *address);
bool fixup_mmap_after_fork (HANDLE h, DWORD access, int flags,
_off64_t offset, DWORD size, void *address);
void dump ();
} ;