Module: wine Branch: master Commit: f8e0bd1b0d189d5950dc39082f439cd1fc9569d5 URL: http://source.winehq.org/git/wine.git/?a=commit;h=f8e0bd1b0d189d5950dc39082f...
Author: Alexandre Julliard julliard@winehq.org Date: Wed Nov 29 10:44:21 2017 +0100
ntdll: Put the initial pthread stack at the end of the Win32 stack.
Create a separate view for it so that the main stack can be freed independently.
Signed-off-by: Alexandre Julliard julliard@winehq.org
---
dlls/ntdll/loader.c | 2 +- dlls/ntdll/ntdll_misc.h | 4 +++- dlls/ntdll/thread.c | 15 ++++++++++++--- dlls/ntdll/virtual.c | 21 +++++++++++++++++++-- 4 files changed, 35 insertions(+), 7 deletions(-)
diff --git a/dlls/ntdll/loader.c b/dlls/ntdll/loader.c index c5cfdce..f7fd8da 100644 --- a/dlls/ntdll/loader.c +++ b/dlls/ntdll/loader.c @@ -3144,7 +3144,7 @@ void WINAPI LdrInitializeThunk( void *kernel_start, ULONG_PTR unknown2, RemoveEntryList( &wm->ldr.InMemoryOrderModuleList ); InsertHeadList( &peb->LdrData->InMemoryOrderModuleList, &wm->ldr.InMemoryOrderModuleList );
- if ((status = virtual_alloc_thread_stack( NtCurrentTeb(), 0, 0 )) != STATUS_SUCCESS) goto error; + if ((status = virtual_alloc_thread_stack( NtCurrentTeb(), 0, 0, 0 )) != STATUS_SUCCESS) goto error; if ((status = server_init_process_done( &context )) != STATUS_SUCCESS) goto error;
status = wine_call_on_stack( attach_dlls, (void *)1, (char *)NtCurrentTeb()->Tib.StackBase - page_size ); diff --git a/dlls/ntdll/ntdll_misc.h b/dlls/ntdll/ntdll_misc.h index e469afd..c8a870c 100644 --- a/dlls/ntdll/ntdll_misc.h +++ b/dlls/ntdll/ntdll_misc.h @@ -165,7 +165,8 @@ extern NTSTATUS nt_to_unix_file_name_attr( const OBJECT_ATTRIBUTES *attr, ANSI_S /* virtual memory */ extern void virtual_get_system_info( SYSTEM_BASIC_INFORMATION *info ) DECLSPEC_HIDDEN; extern NTSTATUS virtual_create_builtin_view( void *base ) DECLSPEC_HIDDEN; -extern NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size ) DECLSPEC_HIDDEN; +extern NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, + SIZE_T commit_size, SIZE_T extra_size ) DECLSPEC_HIDDEN; extern void virtual_clear_thread_stack(void) DECLSPEC_HIDDEN; extern BOOL virtual_handle_stack_fault( void *addr ) DECLSPEC_HIDDEN; extern BOOL virtual_is_valid_code_address( const void *addr, SIZE_T size ) DECLSPEC_HIDDEN; @@ -224,6 +225,7 @@ struct ntdll_thread_data WINE_VM86_TEB_INFO __vm86; /* FIXME: placeholder for vm86 data from struct x86_thread_data */ #endif struct debug_info *debug_info; /* info for debugstr functions */ + void *start_stack; /* stack for thread startup */ int request_fd; /* fd for sending server requests */ int reply_fd; /* fd for receiving server replies */ int wait_fd[2]; /* fd for sleeping server requests */ diff --git a/dlls/ntdll/thread.c b/dlls/ntdll/thread.c index 9c7cd13..80f4780 100644 --- a/dlls/ntdll/thread.c +++ b/dlls/ntdll/thread.c @@ -408,6 +408,7 @@ HANDLE thread_init(void) */ static void free_thread_data( TEB *teb ) { + struct ntdll_thread_data *thread_data = (struct ntdll_thread_data *)&teb->GdiTebBatch; SIZE_T size;
if (teb->DeallocationStack) @@ -415,6 +416,11 @@ static void free_thread_data( TEB *teb ) size = 0; NtFreeVirtualMemory( GetCurrentProcess(), &teb->DeallocationStack, &size, MEM_RELEASE ); } + if (thread_data->start_stack) + { + size = 0; + NtFreeVirtualMemory( GetCurrentProcess(), &thread_data->start_stack, &size, MEM_RELEASE ); + } signal_free_thread( teb ); }
@@ -621,16 +627,19 @@ NTSTATUS WINAPI RtlCreateUserThread( HANDLE process, const SECURITY_DESCRIPTOR * info->entry_point = start; info->entry_arg = param;
+ if ((status = virtual_alloc_thread_stack( teb, stack_reserve, stack_commit, PTHREAD_STACK_MIN ))) + goto error; + thread_data = (struct ntdll_thread_data *)&teb->GdiTebBatch; thread_data->request_fd = request_pipe[1]; thread_data->reply_fd = -1; thread_data->wait_fd[0] = -1; thread_data->wait_fd[1] = -1; - - if ((status = virtual_alloc_thread_stack( teb, stack_reserve, stack_commit ))) goto error; + thread_data->start_stack = (char *)teb->Tib.StackBase;
pthread_attr_init( &attr ); - pthread_attr_setstacksize( &attr, PTHREAD_STACK_MIN ); + pthread_attr_setstack( &attr, teb->DeallocationStack, + (char *)teb->Tib.StackBase + PTHREAD_STACK_MIN - (char *)teb->DeallocationStack ); pthread_attr_setscope( &attr, PTHREAD_SCOPE_SYSTEM ); /* force creating a kernel thread */ interlocked_xchg_add( &nb_threads, 1 ); if (pthread_create( &pthread_id, &attr, (void * (*)(void *))start_thread, info )) diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c index ab27077..8325b28 100644 --- a/dlls/ntdll/virtual.c +++ b/dlls/ntdll/virtual.c @@ -1758,7 +1758,7 @@ NTSTATUS virtual_create_builtin_view( void *module ) /*********************************************************************** * virtual_alloc_thread_stack */ -NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size ) +NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commit_size, SIZE_T extra_size ) { struct file_view *view; NTSTATUS status; @@ -1778,7 +1778,7 @@ NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commi
server_enter_uninterrupted_section( &csVirtual, &sigset );
- if ((status = map_view( &view, NULL, size, 0xffff, 0, + if ((status = map_view( &view, NULL, size + extra_size, 0xffff, 0, VPROT_READ | VPROT_WRITE | VPROT_COMMITTED )) != STATUS_SUCCESS) goto done;
@@ -1793,6 +1793,23 @@ NTSTATUS virtual_alloc_thread_stack( TEB *teb, SIZE_T reserve_size, SIZE_T commi mprotect_range( view->base, 2 * page_size, 0, 0 ); VIRTUAL_DEBUG_DUMP_VIEW( view );
+ if (extra_size) + { + struct file_view *extra_view; + + /* shrink the first view and create a second one for the extra size */ + /* this allows the app to free the stack without freeing the thread start portion */ + view->size -= extra_size; + status = create_view( &extra_view, (char *)view->base + view->size, extra_size, + VPROT_READ | VPROT_WRITE | VPROT_COMMITTED ); + if (status != STATUS_SUCCESS) + { + unmap_area( (char *)view->base + view->size, extra_size ); + delete_view( view ); + goto done; + } + } + /* note: limit is lower than base since the stack grows down */ teb->DeallocationStack = view->base; teb->Tib.StackBase = (char *)view->base + view->size;