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5bc78089db
A few other optimizations in request processing in the server. Moved automatically generated request definitions to server.h and removed include/server/request.h.
136 lines
3.6 KiB
C
136 lines
3.6 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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* FIXME: only process snapshots implemented for now
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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 "winerror.h"
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#include "winnt.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_snapshot *process; /* 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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};
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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),
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snapshot_dump,
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no_add_queue,
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NULL, /* should never get called */
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NULL, /* should never get called */
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NULL, /* should never get called */
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no_read_fd,
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no_write_fd,
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no_flush,
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no_get_file_info,
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snapshot_destroy
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};
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/* create a new snapshot */
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static struct snapshot *create_snapshot( int flags )
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{
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struct snapshot *snapshot;
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if ((snapshot = alloc_object( &snapshot_ops )))
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{
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if (flags & TH32CS_SNAPPROCESS)
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snapshot->process = process_snap( &snapshot->process_count );
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else
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snapshot->process_count = 0;
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snapshot->process_pos = 0;
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}
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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( int handle, int reset, struct next_process_reply *reply )
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{
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struct snapshot *snapshot;
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struct process_snapshot *ptr;
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if (!(snapshot = (struct snapshot *)get_handle_obj( current->process, handle,
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0, &snapshot_ops )))
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return 0;
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if (!snapshot->process_count)
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{
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set_error( ERROR_INVALID_PARAMETER ); /* FIXME */
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release_object( snapshot );
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return 0;
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}
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if (reset) snapshot->process_pos = 0;
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else if (snapshot->process_pos >= snapshot->process_count)
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{
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set_error( ERROR_NO_MORE_FILES );
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release_object( snapshot );
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return 0;
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}
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ptr = &snapshot->process[snapshot->process_pos++];
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reply->pid = ptr->process;
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reply->threads = ptr->threads;
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reply->priority = ptr->priority;
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release_object( snapshot );
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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 processes\n",
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snapshot->process_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->process[i].process );
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free( snapshot->process );
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}
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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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struct create_snapshot_reply *reply = push_reply_data( current, sizeof(*reply) );
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if ((snapshot = create_snapshot( 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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else reply->handle = -1;
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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 next_process_reply *reply = push_reply_data( current, sizeof(*reply) );
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snapshot_next_process( req->handle, req->reset, reply );
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}
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