Find file
Fetching contributors…
Cannot retrieve contributors at this time
220 lines (193 sloc) 6.81 KB
/*
* Server-side snapshots
*
* Copyright (C) 1999 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* FIXME: heap snapshots not implemented
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "handle.h"
#include "process.h"
#include "thread.h"
#include "request.h"
struct snapshot
{
struct object obj; /* object header */
struct process_snapshot *processes; /* processes snapshot */
int process_count; /* count of processes */
int process_pos; /* current position in proc snapshot */
struct thread_snapshot *threads; /* threads snapshot */
int thread_count; /* count of threads */
int thread_pos; /* current position in thread snapshot */
};
static void snapshot_dump( struct object *obj, int verbose );
static void snapshot_destroy( struct object *obj );
static const struct object_ops snapshot_ops =
{
sizeof(struct snapshot), /* size */
snapshot_dump, /* dump */
no_get_type, /* get_type */
no_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
NULL, /* satisfied */
no_signal, /* signal */
no_get_fd, /* get_fd */
no_map_access, /* map_access */
default_get_sd, /* get_sd */
default_set_sd, /* set_sd */
no_lookup_name, /* lookup_name */
no_open_file, /* open_file */
no_close_handle, /* close_handle */
snapshot_destroy /* destroy */
};
/* create a new snapshot */
static struct snapshot *create_snapshot( unsigned int flags )
{
struct snapshot *snapshot;
if (!(snapshot = alloc_object( &snapshot_ops ))) return NULL;
snapshot->process_pos = 0;
snapshot->process_count = 0;
if (flags & SNAP_PROCESS)
snapshot->processes = process_snap( &snapshot->process_count );
snapshot->thread_pos = 0;
snapshot->thread_count = 0;
if (flags & SNAP_THREAD)
snapshot->threads = thread_snap( &snapshot->thread_count );
return snapshot;
}
/* get the next process in the snapshot */
static int snapshot_next_process( struct snapshot *snapshot, struct next_process_reply *reply )
{
struct process_snapshot *ptr;
struct process_dll *exe_module;
if (!snapshot->process_count)
{
set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
return 0;
}
if (snapshot->process_pos >= snapshot->process_count)
{
set_error( STATUS_NO_MORE_FILES );
return 0;
}
ptr = &snapshot->processes[snapshot->process_pos++];
reply->count = ptr->count;
reply->pid = get_process_id( ptr->process );
reply->ppid = ptr->process->parent ? get_process_id( ptr->process->parent ) : 0;
reply->threads = ptr->threads;
reply->priority = ptr->priority;
reply->handles = ptr->handles;
reply->unix_pid = ptr->process->unix_pid;
if ((exe_module = get_process_exe_module( ptr->process )) && exe_module->filename)
{
data_size_t len = min( exe_module->namelen, get_reply_max_size() );
set_reply_data( exe_module->filename, len );
}
return 1;
}
/* get the next thread in the snapshot */
static int snapshot_next_thread( struct snapshot *snapshot, struct next_thread_reply *reply )
{
struct thread_snapshot *ptr;
if (!snapshot->thread_count)
{
set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
return 0;
}
if (snapshot->thread_pos >= snapshot->thread_count)
{
set_error( STATUS_NO_MORE_FILES );
return 0;
}
ptr = &snapshot->threads[snapshot->thread_pos++];
reply->count = ptr->count;
reply->pid = get_process_id( ptr->thread->process );
reply->tid = get_thread_id( ptr->thread );
reply->base_pri = ptr->priority;
reply->delta_pri = 0; /* FIXME */
return 1;
}
static void snapshot_dump( struct object *obj, int verbose )
{
struct snapshot *snapshot = (struct snapshot *)obj;
assert( obj->ops == &snapshot_ops );
fprintf( stderr, "Snapshot: %d procs %d threads\n",
snapshot->process_count, snapshot->thread_count );
}
static void snapshot_destroy( struct object *obj )
{
int i;
struct snapshot *snapshot = (struct snapshot *)obj;
assert( obj->ops == &snapshot_ops );
if (snapshot->process_count)
{
for (i = 0; i < snapshot->process_count; i++)
release_object( snapshot->processes[i].process );
free( snapshot->processes );
}
if (snapshot->thread_count)
{
for (i = 0; i < snapshot->thread_count; i++)
release_object( snapshot->threads[i].thread );
free( snapshot->threads );
}
}
/* create a snapshot */
DECL_HANDLER(create_snapshot)
{
struct snapshot *snapshot;
reply->handle = 0;
if ((snapshot = create_snapshot( req->flags )))
{
reply->handle = alloc_handle( current->process, snapshot, 0, req->attributes );
release_object( snapshot );
}
}
/* get the next process from a snapshot */
DECL_HANDLER(next_process)
{
struct snapshot *snapshot;
if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
0, &snapshot_ops )))
{
if (req->reset) snapshot->process_pos = 0;
snapshot_next_process( snapshot, reply );
release_object( snapshot );
}
}
/* get the next thread from a snapshot */
DECL_HANDLER(next_thread)
{
struct snapshot *snapshot;
if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
0, &snapshot_ops )))
{
if (req->reset) snapshot->thread_pos = 0;
snapshot_next_thread( snapshot, reply );
release_object( snapshot );
}
}