mirror of
git://source.winehq.org/git/wine.git
synced 2024-09-14 22:20:42 +00:00
ntdll: Use pread in NtQueryVirtualMemory(MemoryWorkingSetExInformation).
1 syscall instead of 2 syscalls. Faster and simpler code.
This commit is contained in:
parent
96a4a2b4c4
commit
ffab9d9747
|
@ -4203,7 +4203,7 @@ static NTSTATUS get_working_set_ex( HANDLE process, LPCVOID addr,
|
||||||
MEMORY_WORKING_SET_EX_INFORMATION *info,
|
MEMORY_WORKING_SET_EX_INFORMATION *info,
|
||||||
SIZE_T len, SIZE_T *res_len )
|
SIZE_T len, SIZE_T *res_len )
|
||||||
{
|
{
|
||||||
FILE *f = NULL;
|
int pagemap_fd;
|
||||||
MEMORY_WORKING_SET_EX_INFORMATION *p;
|
MEMORY_WORKING_SET_EX_INFORMATION *p;
|
||||||
sigset_t sigset;
|
sigset_t sigset;
|
||||||
|
|
||||||
|
@ -4266,8 +4266,8 @@ static NTSTATUS get_working_set_ex( HANDLE process, LPCVOID addr,
|
||||||
procstat_close( pstat );
|
procstat_close( pstat );
|
||||||
}
|
}
|
||||||
#else
|
#else
|
||||||
f = fopen( "/proc/self/pagemap", "rb" );
|
pagemap_fd = open( "/proc/self/pagemap", O_RDONLY, 0 );
|
||||||
if (!f)
|
if (pagemap_fd == -1)
|
||||||
{
|
{
|
||||||
static int once;
|
static int once;
|
||||||
if (!once++) WARN( "unable to open /proc/self/pagemap\n" );
|
if (!once++) WARN( "unable to open /proc/self/pagemap\n" );
|
||||||
|
@ -4286,8 +4286,8 @@ static NTSTATUS get_working_set_ex( HANDLE process, LPCVOID addr,
|
||||||
get_committed_size( view, p->VirtualAddress, &vprot, VPROT_COMMITTED ) &&
|
get_committed_size( view, p->VirtualAddress, &vprot, VPROT_COMMITTED ) &&
|
||||||
(vprot & VPROT_COMMITTED))
|
(vprot & VPROT_COMMITTED))
|
||||||
{
|
{
|
||||||
if (!f || fseek( f, ((UINT_PTR)p->VirtualAddress >> page_shift) * sizeof(pagemap), SEEK_SET ) == -1 ||
|
if (pagemap_fd == -1 ||
|
||||||
fread( &pagemap, sizeof(pagemap), 1, f ) != 1)
|
pread( pagemap_fd, &pagemap, sizeof(pagemap), ((UINT_PTR)p->VirtualAddress >> page_shift) * sizeof(pagemap) ) != sizeof(pagemap))
|
||||||
{
|
{
|
||||||
/* If we don't have pagemap information, default to invalid. */
|
/* If we don't have pagemap information, default to invalid. */
|
||||||
pagemap = 0;
|
pagemap = 0;
|
||||||
|
@ -4304,8 +4304,8 @@ static NTSTATUS get_working_set_ex( HANDLE process, LPCVOID addr,
|
||||||
server_leave_uninterrupted_section( &virtual_mutex, &sigset );
|
server_leave_uninterrupted_section( &virtual_mutex, &sigset );
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
if (f)
|
if (pagemap_fd != -1)
|
||||||
fclose( f );
|
close( pagemap_fd );
|
||||||
if (res_len)
|
if (res_len)
|
||||||
*res_len = (UINT_PTR)p - (UINT_PTR)info;
|
*res_len = (UINT_PTR)p - (UINT_PTR)info;
|
||||||
return STATUS_SUCCESS;
|
return STATUS_SUCCESS;
|
||||||
|
|
Loading…
Reference in a new issue