281 lines
8.8 KiB
C
281 lines
8.8 KiB
C
/*
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* Server-side snapshots
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*
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* Copyright (C) 1999 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* FIXME: heap snapshots not implemented
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "windef.h"
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#include "tlhelp32.h"
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#include "handle.h"
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#include "process.h"
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#include "thread.h"
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#include "request.h"
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struct snapshot
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{
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struct object obj; /* object header */
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struct process *process; /* process of this snapshot (for modules and heaps) */
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struct process_snapshot *processes; /* processes snapshot */
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int process_count; /* count of processes */
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int process_pos; /* current position in proc snapshot */
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struct thread_snapshot *threads; /* threads snapshot */
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int thread_count; /* count of threads */
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int thread_pos; /* current position in thread snapshot */
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struct module_snapshot *modules; /* modules snapshot */
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int module_count; /* count of modules */
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int module_pos; /* current position in module snapshot */
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};
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static void snapshot_dump( struct object *obj, int verbose );
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static void snapshot_destroy( struct object *obj );
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static const struct object_ops snapshot_ops =
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{
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sizeof(struct snapshot), /* size */
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snapshot_dump, /* dump */
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no_add_queue, /* add_queue */
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NULL, /* remove_queue */
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NULL, /* signaled */
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NULL, /* satisfied */
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NULL, /* get_poll_events */
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NULL, /* poll_event */
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no_get_fd, /* get_fd */
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no_flush, /* flush */
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no_get_file_info, /* get_file_info */
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NULL, /* queue_async */
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snapshot_destroy /* destroy */
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};
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/* create a new snapshot */
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static struct snapshot *create_snapshot( void *pid, int flags )
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{
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struct process *process = NULL;
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struct snapshot *snapshot;
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/* need a process for modules and heaps */
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if (flags & (TH32CS_SNAPMODULE|TH32CS_SNAPHEAPLIST))
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{
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if (!pid) process = (struct process *)grab_object( current->process );
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else if (!(process = get_process_from_id( pid ))) return NULL;
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}
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if (!(snapshot = alloc_object( &snapshot_ops, -1 )))
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{
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if (process) release_object( process );
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return NULL;
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}
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snapshot->process = process;
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snapshot->process_pos = 0;
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snapshot->process_count = 0;
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if (flags & TH32CS_SNAPPROCESS)
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snapshot->processes = process_snap( &snapshot->process_count );
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snapshot->thread_pos = 0;
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snapshot->thread_count = 0;
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if (flags & TH32CS_SNAPTHREAD)
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snapshot->threads = thread_snap( &snapshot->thread_count );
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snapshot->module_pos = 0;
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snapshot->module_count = 0;
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if (flags & TH32CS_SNAPMODULE)
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snapshot->modules = module_snap( process, &snapshot->module_count );
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return snapshot;
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}
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/* get the next process in the snapshot */
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static int snapshot_next_process( struct snapshot *snapshot, struct next_process_reply *reply )
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{
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struct process_snapshot *ptr;
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if (!snapshot->process_count)
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{
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set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
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return 0;
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}
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if (snapshot->process_pos >= snapshot->process_count)
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{
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set_error( STATUS_NO_MORE_FILES );
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return 0;
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}
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ptr = &snapshot->processes[snapshot->process_pos++];
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reply->count = ptr->count;
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reply->pid = get_process_id( ptr->process );
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reply->ppid = get_process_id( ptr->process->parent );
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reply->heap = 0; /* FIXME */
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reply->module = 0; /* FIXME */
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reply->threads = ptr->threads;
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reply->priority = ptr->priority;
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if (ptr->process->exe.filename)
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{
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size_t len = min( ptr->process->exe.namelen, get_reply_max_size() );
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set_reply_data( ptr->process->exe.filename, len );
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}
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return 1;
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}
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/* get the next thread in the snapshot */
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static int snapshot_next_thread( struct snapshot *snapshot, struct next_thread_reply *reply )
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{
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struct thread_snapshot *ptr;
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if (!snapshot->thread_count)
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{
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set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
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return 0;
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}
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if (snapshot->thread_pos >= snapshot->thread_count)
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{
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set_error( STATUS_NO_MORE_FILES );
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return 0;
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}
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ptr = &snapshot->threads[snapshot->thread_pos++];
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reply->count = ptr->count;
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reply->pid = get_process_id( ptr->thread->process );
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reply->tid = get_thread_id( ptr->thread );
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reply->base_pri = ptr->priority;
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reply->delta_pri = 0; /* FIXME */
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return 1;
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}
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/* get the next module in the snapshot */
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static int snapshot_next_module( struct snapshot *snapshot, struct next_module_reply *reply )
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{
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struct module_snapshot *ptr;
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if (!snapshot->module_count)
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{
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set_error( STATUS_INVALID_PARAMETER ); /* FIXME */
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return 0;
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}
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if (snapshot->module_pos >= snapshot->module_count)
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{
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set_error( STATUS_NO_MORE_FILES );
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return 0;
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}
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ptr = &snapshot->modules[snapshot->module_pos++];
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reply->pid = get_process_id( snapshot->process );
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reply->base = ptr->base;
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reply->size = ptr->size;
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if (ptr->filename)
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{
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size_t len = min( ptr->namelen, get_reply_max_size() );
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set_reply_data( ptr->filename, len );
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}
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return 1;
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}
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static void snapshot_dump( struct object *obj, int verbose )
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{
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struct snapshot *snapshot = (struct snapshot *)obj;
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assert( obj->ops == &snapshot_ops );
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fprintf( stderr, "Snapshot: %d procs %d threads %d modules\n",
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snapshot->process_count, snapshot->thread_count, snapshot->module_count );
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}
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static void snapshot_destroy( struct object *obj )
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{
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int i;
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struct snapshot *snapshot = (struct snapshot *)obj;
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assert( obj->ops == &snapshot_ops );
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if (snapshot->process_count)
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{
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for (i = 0; i < snapshot->process_count; i++)
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release_object( snapshot->processes[i].process );
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free( snapshot->processes );
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}
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if (snapshot->thread_count)
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{
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for (i = 0; i < snapshot->thread_count; i++)
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release_object( snapshot->threads[i].thread );
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free( snapshot->threads );
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}
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if (snapshot->module_count)
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{
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for (i = 0; i < snapshot->module_count; i++)
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free( snapshot->modules[i].filename );
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free( snapshot->modules );
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}
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if (snapshot->process) release_object( snapshot->process );
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}
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/* create a snapshot */
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DECL_HANDLER(create_snapshot)
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{
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struct snapshot *snapshot;
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reply->handle = 0;
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if ((snapshot = create_snapshot( req->pid, req->flags )))
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{
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reply->handle = alloc_handle( current->process, snapshot, 0, req->inherit );
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release_object( snapshot );
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}
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}
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/* get the next process from a snapshot */
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DECL_HANDLER(next_process)
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{
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struct snapshot *snapshot;
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if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
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0, &snapshot_ops )))
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{
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if (req->reset) snapshot->process_pos = 0;
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snapshot_next_process( snapshot, reply );
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release_object( snapshot );
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}
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}
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/* get the next thread from a snapshot */
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DECL_HANDLER(next_thread)
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{
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struct snapshot *snapshot;
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if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
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0, &snapshot_ops )))
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{
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if (req->reset) snapshot->thread_pos = 0;
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snapshot_next_thread( snapshot, reply );
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release_object( snapshot );
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}
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}
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/* get the next module from a snapshot */
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DECL_HANDLER(next_module)
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{
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struct snapshot *snapshot;
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if ((snapshot = (struct snapshot *)get_handle_obj( current->process, req->handle,
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0, &snapshot_ops )))
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{
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if (req->reset) snapshot->module_pos = 0;
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snapshot_next_module( snapshot, reply );
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release_object( snapshot );
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}
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}
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