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Sweden-Number/server/snapshot.c

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/*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* FIXME: heap snapshots not implemented
*/
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "windef.h"
#include "handle.h"
#include "process.h"
#include "thread.h"
#include "request.h"
struct snapshot
{
struct object obj; /* object header */
struct process *process; /* process of this snapshot (for modules and heaps) */
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 */
struct module_snapshot *modules; /* modules snapshot */
int module_count; /* count of modules */
int module_pos; /* current position in module 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_add_queue, /* add_queue */
NULL, /* remove_queue */
NULL, /* signaled */
NULL, /* satisfied */
no_get_fd, /* get_fd */
no_get_file_info, /* get_file_info */
snapshot_destroy /* destroy */
};
/* create a new snapshot */
static struct snapshot *create_snapshot( process_id_t pid, int flags )
{
struct process *process = NULL;
struct snapshot *snapshot;
/* need a process for modules and heaps */
if (flags & (SNAP_MODULE|SNAP_HEAPLIST))
{
if (!pid) process = (struct process *)grab_object( current->process );
else if (!(process = get_process_from_id( pid ))) return NULL;
}
if (!(snapshot = alloc_object( &snapshot_ops, -1 )))
{
if (process) release_object( process );
return NULL;
}
snapshot->process = process;
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 );
snapshot->module_pos = 0;
snapshot->module_count = 0;
if (flags & SNAP_MODULE)
snapshot->modules = module_snap( process, &snapshot->module_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;
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 = get_process_id( ptr->process->parent );
reply->heap = 0; /* FIXME */
reply->module = 0; /* FIXME */
reply->threads = ptr->threads;
reply->priority = ptr->priority;
if (ptr->process->exe.filename)
{
size_t len = min( ptr->process->exe.namelen, get_reply_max_size() );
set_reply_data( ptr->process->exe.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;
}
/* get the next module in the snapshot */
static int snapshot_next_module( struct snapshot *snapshot, struct next_module_reply *reply )
{
struct module_snapshot *ptr;
if (!snapshot->module_count)
{
set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
return 0;
}
if (snapshot->module_pos >= snapshot->module_count)
{
set_error( STATUS_NO_MORE_FILES );
return 0;
}
ptr = &snapshot->modules[snapshot->module_pos++];
reply->pid = get_process_id( snapshot->process );
reply->base = ptr->base;
reply->size = ptr->size;
if (ptr->filename)
{
size_t len = min( ptr->namelen, get_reply_max_size() );
set_reply_data( ptr->filename, len );
}
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 %d modules\n",
snapshot->process_count, snapshot->thread_count, snapshot->module_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 );
}
if (snapshot->module_count)
{
for (i = 0; i < snapshot->module_count; i++)
free( snapshot->modules[i].filename );
free( snapshot->modules );
}
if (snapshot->process) release_object( snapshot->process );
}
/* create a snapshot */
DECL_HANDLER(create_snapshot)
{
struct snapshot *snapshot;
reply->handle = 0;
if ((snapshot = create_snapshot( req->pid, req->flags )))
{
reply->handle = alloc_handle( current->process, snapshot, 0, req->inherit );
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 );
}
}
/* get the next module from a snapshot */
DECL_HANDLER(next_module)
{
struct snapshot *snapshot;
if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
0, &snapshot_ops )))
{
if (req->reset) snapshot->module_pos = 0;
snapshot_next_module( snapshot, reply );
release_object( snapshot );
}
}
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