Alexandre Julliard : ntdll: Add helper functions for getting and setting thread context through the server.
Module: wine Branch: master Commit: 1e48417567ce976b805b38dd8d1eff6a02e773e9 URL: http://source.winehq.org/git/wine.git/?a=commit;h=1e48417567ce976b805b38dd8d... Author: Alexandre Julliard <julliard(a)winehq.org> Date: Tue Jul 18 11:07:48 2017 +0200 ntdll: Add helper functions for getting and setting thread context through the server. Signed-off-by: Alexandre Julliard <julliard(a)winehq.org> --- dlls/ntdll/thread.c | 180 +++++++++++++++++++++++++++++----------------------- 1 file changed, 101 insertions(+), 79 deletions(-) diff --git a/dlls/ntdll/thread.c b/dlls/ntdll/thread.c index 830dd3a..4e1a060 100644 --- a/dlls/ntdll/thread.c +++ b/dlls/ntdll/thread.c @@ -769,13 +769,61 @@ NTSTATUS WINAPI NtQueueApcThread( HANDLE handle, PNTAPCFUNC func, ULONG_PTR arg1 /*********************************************************************** + * set_thread_context + */ +static NTSTATUS set_thread_context( HANDLE handle, const CONTEXT *context, BOOL *self ) +{ + NTSTATUS ret; + DWORD dummy, i; + context_t server_context; + + context_to_server( &server_context, context ); + + SERVER_START_REQ( set_thread_context ) + { + req->handle = wine_server_obj_handle( handle ); + req->suspend = 1; + wine_server_add_data( req, &server_context, sizeof(server_context) ); + ret = wine_server_call( req ); + *self = reply->self; + } + SERVER_END_REQ; + + if (ret == STATUS_PENDING) + { + for (i = 0; i < 100; i++) + { + SERVER_START_REQ( set_thread_context ) + { + req->handle = wine_server_obj_handle( handle ); + req->suspend = 0; + wine_server_add_data( req, &server_context, sizeof(server_context) ); + ret = wine_server_call( req ); + } + SERVER_END_REQ; + if (ret == STATUS_PENDING) + { + LARGE_INTEGER timeout; + timeout.QuadPart = -10000; + NtDelayExecution( FALSE, &timeout ); + } + else break; + } + NtResumeThread( handle, &dummy ); + if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED; + } + + return ret; +} + + +/*********************************************************************** * NtSetContextThread (NTDLL.@) * ZwSetContextThread (NTDLL.@) */ NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context ) { NTSTATUS ret; - DWORD dummy, i; BOOL self; #ifdef __i386__ @@ -796,44 +844,7 @@ NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context ) if (!self) { - context_t server_context; - - context_to_server( &server_context, context ); - - SERVER_START_REQ( set_thread_context ) - { - req->handle = wine_server_obj_handle( handle ); - req->suspend = 1; - wine_server_add_data( req, &server_context, sizeof(server_context) ); - ret = wine_server_call( req ); - self = reply->self; - } - SERVER_END_REQ; - - if (ret == STATUS_PENDING) - { - for (i = 0; i < 100; i++) - { - SERVER_START_REQ( set_thread_context ) - { - req->handle = wine_server_obj_handle( handle ); - req->suspend = 0; - wine_server_add_data( req, &server_context, sizeof(server_context) ); - ret = wine_server_call( req ); - } - SERVER_END_REQ; - if (ret == STATUS_PENDING) - { - LARGE_INTEGER timeout; - timeout.QuadPart = -10000; - NtDelayExecution( FALSE, &timeout ); - } - else break; - } - NtResumeThread( handle, &dummy ); - if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED; - } - + ret = set_thread_context( handle, context, &self ); if (ret) return ret; } @@ -866,13 +877,62 @@ static inline unsigned int get_server_context_flags( DWORD flags ) } /*********************************************************************** + * get_thread_context + */ +static NTSTATUS get_thread_context( HANDLE handle, CONTEXT *context, BOOL *self ) +{ + NTSTATUS ret; + DWORD dummy, i; + unsigned int server_flags = get_server_context_flags( context->ContextFlags ); + context_t server_context; + + SERVER_START_REQ( get_thread_context ) + { + req->handle = wine_server_obj_handle( handle ); + req->flags = server_flags; + req->suspend = 1; + wine_server_set_reply( req, &server_context, sizeof(server_context) ); + ret = wine_server_call( req ); + *self = reply->self; + } + SERVER_END_REQ; + + if (ret == STATUS_PENDING) + { + for (i = 0; i < 100; i++) + { + SERVER_START_REQ( get_thread_context ) + { + req->handle = wine_server_obj_handle( handle ); + req->flags = server_flags; + req->suspend = 0; + wine_server_set_reply( req, &server_context, sizeof(server_context) ); + ret = wine_server_call( req ); + } + SERVER_END_REQ; + if (ret == STATUS_PENDING) + { + LARGE_INTEGER timeout; + timeout.QuadPart = -10000; + NtDelayExecution( FALSE, &timeout ); + } + else break; + } + NtResumeThread( handle, &dummy ); + if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED; + } + if (!ret) ret = context_from_server( context, &server_context ); + return ret; +} + + +/*********************************************************************** * NtGetContextThread (NTDLL.@) * ZwGetContextThread (NTDLL.@) */ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context ) { NTSTATUS ret; - DWORD dummy, i; DWORD needed_flags = context->ContextFlags; BOOL self = (handle == GetCurrentThread()); @@ -885,45 +945,7 @@ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context ) if (!self) { - unsigned int server_flags = get_server_context_flags( context->ContextFlags ); - context_t server_context; - - SERVER_START_REQ( get_thread_context ) - { - req->handle = wine_server_obj_handle( handle ); - req->flags = server_flags; - req->suspend = 1; - wine_server_set_reply( req, &server_context, sizeof(server_context) ); - ret = wine_server_call( req ); - self = reply->self; - } - SERVER_END_REQ; - - if (ret == STATUS_PENDING) - { - for (i = 0; i < 100; i++) - { - SERVER_START_REQ( get_thread_context ) - { - req->handle = wine_server_obj_handle( handle ); - req->flags = server_flags; - req->suspend = 0; - wine_server_set_reply( req, &server_context, sizeof(server_context) ); - ret = wine_server_call( req ); - } - SERVER_END_REQ; - if (ret == STATUS_PENDING) - { - LARGE_INTEGER timeout; - timeout.QuadPart = -10000; - NtDelayExecution( FALSE, &timeout ); - } - else break; - } - NtResumeThread( handle, &dummy ); - if (ret == STATUS_PENDING) ret = STATUS_ACCESS_DENIED; - } - if (!ret) ret = context_from_server( context, &server_context ); + ret = get_thread_context( handle, context, &self ); if (ret) return ret; needed_flags &= ~context->ContextFlags; }
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Alexandre Julliard