services: Track number of services per process.

programs/services/rpc.c

@@ -761,7 +761,8 @@ DWORD __cdecl svcctl_SetServiceStatus(
         if (lpServiceStatus->dwCurrentState == SERVICE_STOPPED)
         {
             service->service_entry->process = NULL;
-            terminate_after_timeout(process, service_kill_timeout);
+            if (!--process->use_count)
+                terminate_after_timeout(process, service_kill_timeout);
             release_process(process);
         }
         else
@@ -1135,7 +1136,11 @@ DWORD __cdecl svcctl_ControlService(
     {
         result = ERROR_SERVICE_CANNOT_ACCEPT_CTRL;
         if ((process = service->service_entry->process))
-            process_terminate(process);
+        {
+            service->service_entry->process = NULL;
+            if (!--process->use_count) process_terminate(process);
+            release_process(process);
+        }
     }
 
     if (result != ERROR_SUCCESS)

programs/services/services.c

@@ -752,8 +752,9 @@ static DWORD service_start_process(struct service_entry *service_entry, struct p
             service_unlock(service_entry);
             return ERROR_SERVICE_ALREADY_RUNNING;
         }
-        release_process(process);
         service_entry->process = NULL;
+        process->use_count--;
+        release_process(process);
     }
 
     service_entry->force_shutdown = FALSE;
@@ -784,6 +785,7 @@ static DWORD service_start_process(struct service_entry *service_entry, struct p
     service_entry->status.dwCurrentState = SERVICE_START_PENDING;
     scmdatabase_add_process(service_entry->db, process);
     service_entry->process = grab_process(process);
+    process->use_count++;
 
     service_unlock(service_entry);
 
@@ -945,6 +947,7 @@ void process_terminate(struct process_entry *process)
         if (service->process != process) continue;
         service->status.dwCurrentState = SERVICE_STOPPED;
         service->process = NULL;
+        process->use_count--;
         release_process(process);
     }
     scmdatabase_unlock(db);

programs/services/services.h

@@ -37,6 +37,7 @@ struct process_entry
     struct list entry;
     struct scmdatabase *db;
     LONG ref_count;
+    LONG use_count;
     DWORD process_id;
     HANDLE process;
     HANDLE control_mutex;