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Changed wait_process and wait_debug_event requests to never block; 

waiting is always done through WaitForSingleObject().
This commit is contained in:
Alexandre Julliard 2001-01-26 00:22:26 +00:00
parent 819bff4d33
commit e9936d96e1
7 changed files with 192 additions and 221 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

154
dlls/kernel/debugger.c
View File

@ -31,82 +31,92 @@ BOOL WINAPI WaitForDebugEvent(
DWORD timeout /* Number of milliseconds to wait for event. */)
{
BOOL ret;
SERVER_START_REQ
DWORD res;
for (;;)
{
debug_event_t *data;
struct wait_debug_event_request *req = server_alloc_req( sizeof(*req), sizeof(*data) );
req->timeout = timeout;
if (!(ret = !server_call( REQ_WAIT_DEBUG_EVENT ))) goto done;
if (!server_data_size(req)) /* timeout */
HANDLE wait = 0;
SERVER_START_REQ
{
SetLastError( ERROR_SEM_TIMEOUT );
ret = FALSE;
goto done;
debug_event_t *data;
struct wait_debug_event_request *req = server_alloc_req( sizeof(*req), sizeof(*data) );
req->get_handle = (timeout != 0);
if (!(ret = !server_call( REQ_WAIT_DEBUG_EVENT ))) goto done;
if (!server_data_size(req)) /* timeout */
{
wait = req->wait;
ret = FALSE;
goto done;
}
data = server_data_ptr(req);
event->dwDebugEventCode = data->code;
event->dwProcessId = (DWORD)req->pid;
event->dwThreadId = (DWORD)req->tid;
switch(data->code)
{
case EXCEPTION_DEBUG_EVENT:
event->u.Exception.ExceptionRecord = data->info.exception.record;
event->u.Exception.dwFirstChance = data->info.exception.first;
break;
case CREATE_THREAD_DEBUG_EVENT:
event->u.CreateThread.hThread = data->info.create_thread.handle;
event->u.CreateThread.lpThreadLocalBase = data->info.create_thread.teb;
event->u.CreateThread.lpStartAddress = data->info.create_thread.start;
break;
case CREATE_PROCESS_DEBUG_EVENT:
event->u.CreateProcessInfo.hFile = data->info.create_process.file;
event->u.CreateProcessInfo.hProcess = data->info.create_process.process;
event->u.CreateProcessInfo.hThread = data->info.create_process.thread;
event->u.CreateProcessInfo.lpBaseOfImage = data->info.create_process.base;
event->u.CreateProcessInfo.dwDebugInfoFileOffset = data->info.create_process.dbg_offset;
event->u.CreateProcessInfo.nDebugInfoSize = data->info.create_process.dbg_size;
event->u.CreateProcessInfo.lpThreadLocalBase = data->info.create_process.teb;
event->u.CreateProcessInfo.lpStartAddress = data->info.create_process.start;
event->u.CreateProcessInfo.lpImageName = data->info.create_process.name;
event->u.CreateProcessInfo.fUnicode = data->info.create_process.unicode;
if (data->info.create_process.file == -1) event->u.CreateProcessInfo.hFile = 0;
break;
case EXIT_THREAD_DEBUG_EVENT:
event->u.ExitThread.dwExitCode = data->info.exit.exit_code;
break;
case EXIT_PROCESS_DEBUG_EVENT:
event->u.ExitProcess.dwExitCode = data->info.exit.exit_code;
break;
case LOAD_DLL_DEBUG_EVENT:
event->u.LoadDll.hFile = data->info.load_dll.handle;
event->u.LoadDll.lpBaseOfDll = data->info.load_dll.base;
event->u.LoadDll.dwDebugInfoFileOffset = data->info.load_dll.dbg_offset;
event->u.LoadDll.nDebugInfoSize = data->info.load_dll.dbg_size;
event->u.LoadDll.lpImageName = data->info.load_dll.name;
event->u.LoadDll.fUnicode = data->info.load_dll.unicode;
if (data->info.load_dll.handle == -1) event->u.LoadDll.hFile = 0;
break;
case UNLOAD_DLL_DEBUG_EVENT:
event->u.UnloadDll.lpBaseOfDll = data->info.unload_dll.base;
break;
case OUTPUT_DEBUG_STRING_EVENT:
event->u.DebugString.lpDebugStringData = data->info.output_string.string;
event->u.DebugString.fUnicode = data->info.output_string.unicode;
event->u.DebugString.nDebugStringLength = data->info.output_string.length;
break;
case RIP_EVENT:
event->u.RipInfo.dwError = data->info.rip_info.error;
event->u.RipInfo.dwType = data->info.rip_info.type;
break;
}
done:
}
data = server_data_ptr(req);
event->dwDebugEventCode = data->code;
event->dwProcessId = (DWORD)req->pid;
event->dwThreadId = (DWORD)req->tid;
switch(data->code)
{
case EXCEPTION_DEBUG_EVENT:
event->u.Exception.ExceptionRecord = data->info.exception.record;
event->u.Exception.dwFirstChance = data->info.exception.first;
break;
case CREATE_THREAD_DEBUG_EVENT:
event->u.CreateThread.hThread = data->info.create_thread.handle;
event->u.CreateThread.lpThreadLocalBase = data->info.create_thread.teb;
event->u.CreateThread.lpStartAddress = data->info.create_thread.start;
break;
case CREATE_PROCESS_DEBUG_EVENT:
event->u.CreateProcessInfo.hFile = data->info.create_process.file;
event->u.CreateProcessInfo.hProcess = data->info.create_process.process;
event->u.CreateProcessInfo.hThread = data->info.create_process.thread;
event->u.CreateProcessInfo.lpBaseOfImage = data->info.create_process.base;
event->u.CreateProcessInfo.dwDebugInfoFileOffset = data->info.create_process.dbg_offset;
event->u.CreateProcessInfo.nDebugInfoSize = data->info.create_process.dbg_size;
event->u.CreateProcessInfo.lpThreadLocalBase = data->info.create_process.teb;
event->u.CreateProcessInfo.lpStartAddress = data->info.create_process.start;
event->u.CreateProcessInfo.lpImageName = data->info.create_process.name;
event->u.CreateProcessInfo.fUnicode = data->info.create_process.unicode;
if (data->info.create_process.file == -1) event->u.CreateProcessInfo.hFile = 0;
break;
case EXIT_THREAD_DEBUG_EVENT:
event->u.ExitThread.dwExitCode = data->info.exit.exit_code;
break;
case EXIT_PROCESS_DEBUG_EVENT:
event->u.ExitProcess.dwExitCode = data->info.exit.exit_code;
break;
case LOAD_DLL_DEBUG_EVENT:
event->u.LoadDll.hFile = data->info.load_dll.handle;
event->u.LoadDll.lpBaseOfDll = data->info.load_dll.base;
event->u.LoadDll.dwDebugInfoFileOffset = data->info.load_dll.dbg_offset;
event->u.LoadDll.nDebugInfoSize = data->info.load_dll.dbg_size;
event->u.LoadDll.lpImageName = data->info.load_dll.name;
event->u.LoadDll.fUnicode = data->info.load_dll.unicode;
if (data->info.load_dll.handle == -1) event->u.LoadDll.hFile = 0;
break;
case UNLOAD_DLL_DEBUG_EVENT:
event->u.UnloadDll.lpBaseOfDll = data->info.unload_dll.base;
break;
case OUTPUT_DEBUG_STRING_EVENT:
event->u.DebugString.lpDebugStringData = data->info.output_string.string;
event->u.DebugString.fUnicode = data->info.output_string.unicode;
event->u.DebugString.nDebugStringLength = data->info.output_string.length;
break;
case RIP_EVENT:
event->u.RipInfo.dwError = data->info.rip_info.error;
event->u.RipInfo.dwType = data->info.rip_info.type;
break;
default:
server_protocol_error( "WaitForDebugEvent: bad code %d\n", data->code );
}
done:
SERVER_END_REQ;
if (ret) return TRUE;
if (!wait) break;
res = WaitForSingleObject( wait, timeout );
CloseHandle( wait );
if (res != STATUS_WAIT_0) break;
}
SERVER_END_REQ;
return ret;
SetLastError( ERROR_SEM_TIMEOUT );
return FALSE;
}

17
include/server.h
View File

@ -131,18 +131,18 @@ struct new_process_request
IN handle_t hstdout; /* handle for stdout */
IN handle_t hstderr; /* handle for stderr */
IN int cmd_show; /* main window show mode */
OUT handle_t info; /* new process info handle */
IN VARARG(filename,string); /* file name of main exe */
};
/* Wait for the new process to start */
struct wait_process_request
/* Retrieve information about a newly started process */
struct get_new_process_info_request
{
REQUEST_HEADER; /* request header */
IN handle_t info; /* info handle returned from new_process_request */
IN int pinherit; /* process handle inherit flag */
IN int tinherit; /* thread handle inherit flag */
IN int timeout; /* wait timeout */
IN int cancel; /* cancel the process creation? */
OUT void* pid; /* process id */
OUT handle_t phandle; /* process handle (in the current process) */
OUT void* tid; /* thread id */
@ -930,9 +930,10 @@ struct next_module_request
struct wait_debug_event_request
{
REQUEST_HEADER; /* request header */
IN int timeout; /* timeout in ms */
IN int get_handle; /* should we alloc a handle for waiting? */
OUT void* pid; /* process id */
OUT void* tid; /* thread id */
OUT handle_t wait; /* wait handle if no event ready */
OUT VARARG(event,debug_event); /* debug event data */
};
@ -1356,7 +1357,7 @@ struct async_result_request
enum request
{
REQ_NEW_PROCESS,
REQ_WAIT_PROCESS,
REQ_GET_NEW_PROCESS_INFO,
REQ_NEW_THREAD,
REQ_BOOT_DONE,
REQ_INIT_PROCESS,
@ -1471,7 +1472,7 @@ union generic_request
struct request_max_size max_size;
struct request_header header;
struct new_process_request new_process;
struct wait_process_request wait_process;
struct get_new_process_info_request get_new_process_info;
struct new_thread_request new_thread;
struct boot_done_request boot_done;
struct init_process_request init_process;
@ -1580,7 +1581,7 @@ union generic_request
struct async_result_request async_result;
};
#define SERVER_PROTOCOL_VERSION 34
#define SERVER_PROTOCOL_VERSION 35
/* ### make_requests end ### */
/* Everything above this line is generated automatically by tools/make_requests */

36
scheduler/process.c
View File

@ -743,6 +743,7 @@ BOOL PROCESS_Create( HANDLE hFile, LPCSTR filename, LPSTR cmd_line, LPCSTR env,
const char *unixdir = NULL;
DOS_FULL_NAME full_dir, full_name;
HANDLE load_done_evt = 0;
HANDLE process_info;
info->hThread = info->hProcess = 0;
@ -797,6 +798,7 @@ BOOL PROCESS_Create( HANDLE hFile, LPCSTR filename, LPSTR cmd_line, LPCSTR env,
lstrcpynA( server_data_ptr(req), filename, MAX_PATH );
}
ret = !server_call( REQ_NEW_PROCESS );
process_info = req->info;
}
SERVER_END_REQ;
if (!ret) return FALSE;
@ -805,24 +807,30 @@ BOOL PROCESS_Create( HANDLE hFile, LPCSTR filename, LPSTR cmd_line, LPCSTR env,
pid = fork_and_exec( unixfilename, cmd_line, env, unixdir );
SERVER_START_REQ
/* wait for the new process info to be ready */
ret = FALSE;
if ((pid != -1) && (WaitForSingleObject( process_info, 2000 ) == STATUS_WAIT_0))
{
struct wait_process_request *req = server_alloc_req( sizeof(*req), 0 );
req->cancel = (pid == -1);
req->pinherit = (psa && (psa->nLength >= sizeof(*psa)) && psa->bInheritHandle);
req->tinherit = (tsa && (tsa->nLength >= sizeof(*tsa)) && tsa->bInheritHandle);
req->timeout = 2000;
if ((ret = !server_call( REQ_WAIT_PROCESS )) && (pid != -1))
SERVER_START_REQ
{
info->dwProcessId = (DWORD)req->pid;
info->dwThreadId = (DWORD)req->tid;
info->hProcess = req->phandle;
info->hThread = req->thandle;
load_done_evt = req->event;
struct get_new_process_info_request *req = server_alloc_req( sizeof(*req), 0 );
req->info = process_info;
req->pinherit = (psa && (psa->nLength >= sizeof(*psa)) && psa->bInheritHandle);
req->tinherit = (tsa && (tsa->nLength >= sizeof(*tsa)) && tsa->bInheritHandle);
if ((ret = !server_call( REQ_GET_NEW_PROCESS_INFO )))
{
info->dwProcessId = (DWORD)req->pid;
info->dwThreadId = (DWORD)req->tid;
info->hProcess = req->phandle;
info->hThread = req->thandle;
load_done_evt = req->event;
}
}
SERVER_END_REQ;
}
SERVER_END_REQ;
if (!ret || (pid == -1)) goto error;
CloseHandle( process_info );
if (!ret) goto error;
/* Wait until process is initialized (or initialization failed) */
if (load_done_evt)

82
server/debugger.c
View File

@ -241,37 +241,6 @@ static struct debug_event *find_event_to_send( struct debug_ctx *debug_ctx )
return event;
}
/* build a reply for the wait_debug_event request */
static void build_wait_debug_reply( struct thread *thread, struct object *obj, int signaled )
{
struct wait_debug_event_request *req = get_req_ptr( thread );
if (obj)
{
struct debug_ctx *debug_ctx = (struct debug_ctx *)obj;
struct debug_event *event = find_event_to_send( debug_ctx );
size_t size = get_req_data_size(req);
/* the object that woke us has to be our debug context */
assert( obj->ops == &debug_ctx_ops );
assert( event );
event->state = EVENT_SENT;
event->sender->debug_event = event;
req->pid = event->sender->process;
req->tid = event->sender;
if (size > sizeof(debug_event_t)) size = sizeof(debug_event_t);
memcpy( get_req_data(req), &event->data, size );
set_req_data_size( req, size );
}
else /* timeout or error */
{
set_req_data_size( req, 0 );
req->pid = 0;
req->tid = 0;
}
}
/* build a reply for the send_event request */
static void build_exception_event_reply( struct thread *thread, struct object *obj, int signaled )
{
@ -357,29 +326,6 @@ static void debug_ctx_destroy( struct object *obj )
while ((event = debug_ctx->event_head) != NULL) unlink_event( debug_ctx, event );
}
/* wait for a debug event (or send a reply at once if one is pending) */
static int wait_for_debug_event( int timeout )
{
struct debug_ctx *debug_ctx = current->debug_ctx;
struct object *obj = &debug_ctx->obj;
int flags = 0;
struct timeval tv;
if (!debug_ctx) /* current thread is not a debugger */
{
set_error( STATUS_INVALID_HANDLE );
return 0;
}
if (timeout != -1)
{
flags = SELECT_TIMEOUT;
gettimeofday( &tv, 0 );
add_timeout( &tv, timeout );
}
else tv.tv_sec = tv.tv_usec = 0;
return sleep_on( 1, &obj, flags, tv.tv_sec, tv.tv_usec, build_wait_debug_reply );
}
/* continue a debug event */
static int continue_debug_event( struct process *process, struct thread *thread, int status )
{
@ -539,11 +485,33 @@ void debug_exit_thread( struct thread *thread )
/* Wait for a debug event */
DECL_HANDLER(wait_debug_event)
{
if (!wait_for_debug_event( req->timeout ))
struct debug_ctx *debug_ctx = current->debug_ctx;
struct debug_event *event;
if (!debug_ctx) /* current thread is not a debugger */
{
req->pid = NULL;
req->tid = NULL;
set_error( STATUS_INVALID_HANDLE );
return;
}
req->wait = 0;
if ((event = find_event_to_send( debug_ctx )))
{
size_t size = get_req_data_size(req);
event->state = EVENT_SENT;
event->sender->debug_event = event;
req->pid = event->sender->process;
req->tid = event->sender;
if (size > sizeof(debug_event_t)) size = sizeof(debug_event_t);
memcpy( get_req_data(req), &event->data, size );
set_req_data_size( req, size );
}
else /* no event ready */
{
req->pid = 0;
req->tid = 0;
set_req_data_size( req, 0 );
if (req->get_handle)
req->wait = alloc_handle( current->process, debug_ctx, SYNCHRONIZE, FALSE );
}
}

93
server/process.c
View File

@ -68,6 +68,7 @@ struct startup_info
int cmd_show; /* main window show mode */
struct file *exe_file; /* file handle for main exe */
char *filename; /* file name for main exe */
struct thread *owner; /* owner thread (the one that created the new process) */
struct process *process; /* created process */
struct thread *thread; /* created thread */
};
@ -319,6 +320,11 @@ static void startup_info_destroy( struct object *obj )
if (info->exe_file) release_object( info->exe_file );
if (info->process) release_object( info->process );
if (info->thread) release_object( info->thread );
if (info->owner)
{
info->owner->info = NULL;
release_object( info->owner );
}
}
static void startup_info_dump( struct object *obj, int verbose )
@ -337,33 +343,6 @@ static int startup_info_signaled( struct object *obj, struct thread *thread )
}
/* build a reply for the wait_process request */
static void build_wait_process_reply( struct thread *thread, struct object *obj, int signaled )
{
struct wait_process_request *req = get_req_ptr( thread );
if (obj)
{
struct startup_info *info = (struct startup_info *)obj;
assert( obj->ops == &startup_info_ops );
req->pid = get_process_id( info->process );
req->tid = get_thread_id( info->thread );
req->phandle = alloc_handle( thread->process, info->process,
PROCESS_ALL_ACCESS, req->pinherit );
req->thandle = alloc_handle( thread->process, info->thread,
THREAD_ALL_ACCESS, req->tinherit );
if (info->process->init_event)
req->event = alloc_handle( thread->process, info->process->init_event,
EVENT_ALL_ACCESS, 0 );
else
req->event = 0;
/* FIXME: set_error */
}
release_object( thread->info );
thread->info = NULL;
}
/* get a process from an id (and increment the refcount) */
struct process *get_process_from_id( void *id )
{
@ -731,52 +710,52 @@ DECL_HANDLER(new_process)
info->cmd_show = req->cmd_show;
info->exe_file = NULL;
info->filename = NULL;
info->owner = (struct thread *)grab_object( current );
info->process = NULL;
info->thread = NULL;
if (req->exe_file &&
!(info->exe_file = get_file_obj( current->process, req->exe_file, GENERIC_READ )))
{
release_object( info );
return;
}
goto done;
if (!(info->filename = mem_alloc( len + 1 ))) goto done;
if (!(info->filename = mem_alloc( len + 1 )))
{
release_object( info );
return;
}
memcpy( info->filename, get_req_data(req), len );
info->filename[len] = 0;
current->info = info;
req->info = alloc_handle( current->process, info, SYNCHRONIZE, FALSE );
done:
release_object( info );
}
/* Wait for the new process to start */
DECL_HANDLER(wait_process)
/* Retrieve information about a newly started process */
DECL_HANDLER(get_new_process_info)
{
if (!current->info)
struct startup_info *info;
req->event = 0;
if ((info = (struct startup_info *)get_handle_obj( current->process, req->info,
0, &startup_info_ops )))
{
fatal_protocol_error( current, "wait_process: no process is being created\n" );
return;
}
req->pid = 0;
req->tid = 0;
req->phandle = 0;
req->thandle = 0;
req->event = 0;
if (req->cancel)
{
release_object( current->info );
current->info = NULL;
req->pid = get_process_id( info->process );
req->tid = get_thread_id( info->thread );
req->phandle = alloc_handle( current->process, info->process,
PROCESS_ALL_ACCESS, req->pinherit );
req->thandle = alloc_handle( current->process, info->thread,
THREAD_ALL_ACCESS, req->tinherit );
if (info->process->init_event)
req->event = alloc_handle( current->process, info->process->init_event,
EVENT_ALL_ACCESS, 0 );
release_object( info );
}
else
{
struct timeval timeout;
struct object *obj = &current->info->obj;
gettimeofday( &timeout, 0 );
add_timeout( &timeout, req->timeout );
sleep_on( 1, &obj, SELECT_TIMEOUT, timeout.tv_sec, timeout.tv_usec,
build_wait_process_reply );
req->pid = 0;
req->tid = 0;
req->phandle = 0;
req->thandle = 0;
}
}

4
server/request.h
View File

@ -71,7 +71,7 @@ inline static void set_req_data_size( const void *req, size_t size )
/* ### make_requests begin ### */
DECL_HANDLER(new_process);
DECL_HANDLER(wait_process);
DECL_HANDLER(get_new_process_info);
DECL_HANDLER(new_thread);
DECL_HANDLER(boot_done);
DECL_HANDLER(init_process);
@ -185,7 +185,7 @@ typedef void (*req_handler)( void *req );
static const req_handler req_handlers[REQ_NB_REQUESTS] =
{
(req_handler)req_new_process,
(req_handler)req_wait_process,
(req_handler)req_get_new_process_info,
(req_handler)req_new_thread,
(req_handler)req_boot_done,
(req_handler)req_init_process,

27
server/trace.c
View File

@ -275,15 +275,19 @@ static void dump_new_process_request( const struct new_process_request *req )
cur_pos += dump_varargs_string( req );
}
static void dump_wait_process_request( const struct wait_process_request *req )
static void dump_new_process_reply( const struct new_process_request *req )
{
fprintf( stderr, " pinherit=%d,", req->pinherit );
fprintf( stderr, " tinherit=%d,", req->tinherit );
fprintf( stderr, " timeout=%d,", req->timeout );
fprintf( stderr, " cancel=%d", req->cancel );
fprintf( stderr, " info=%d", req->info );
}
static void dump_wait_process_reply( const struct wait_process_request *req )
static void dump_get_new_process_info_request( const struct get_new_process_info_request *req )
{
fprintf( stderr, " info=%d,", req->info );
fprintf( stderr, " pinherit=%d,", req->pinherit );
fprintf( stderr, " tinherit=%d", req->tinherit );
}
static void dump_get_new_process_info_reply( const struct get_new_process_info_request *req )
{
fprintf( stderr, " pid=%p,", req->pid );
fprintf( stderr, " phandle=%d,", req->phandle );
@ -1050,13 +1054,14 @@ static void dump_next_module_reply( const struct next_module_request *req )
static void dump_wait_debug_event_request( const struct wait_debug_event_request *req )
{
fprintf( stderr, " timeout=%d", req->timeout );
fprintf( stderr, " get_handle=%d", req->get_handle );
}
static void dump_wait_debug_event_reply( const struct wait_debug_event_request *req )
{
fprintf( stderr, " pid=%p,", req->pid );
fprintf( stderr, " tid=%p,", req->tid );
fprintf( stderr, " wait=%d,", req->wait );
fprintf( stderr, " event=" );
cur_pos += dump_varargs_debug_event( req );
}
@ -1474,7 +1479,7 @@ static void dump_async_result_request( const struct async_result_request *req )
static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
(dump_func)dump_new_process_request,
(dump_func)dump_wait_process_request,
(dump_func)dump_get_new_process_info_request,
(dump_func)dump_new_thread_request,
(dump_func)dump_boot_done_request,
(dump_func)dump_init_process_request,
@ -1584,8 +1589,8 @@ static const dump_func req_dumpers[REQ_NB_REQUESTS] = {
};
static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
(dump_func)0,
(dump_func)dump_wait_process_reply,
(dump_func)dump_new_process_reply,
(dump_func)dump_get_new_process_info_reply,
(dump_func)dump_new_thread_reply,
(dump_func)0,
(dump_func)dump_init_process_reply,
@ -1696,7 +1701,7 @@ static const dump_func reply_dumpers[REQ_NB_REQUESTS] = {
static const char * const req_names[REQ_NB_REQUESTS] = {
"new_process",
"wait_process",
"get_new_process_info",
"new_thread",
"boot_done",
"init_process",