src/add-ons/kernel/generic/tty/module.cpp

   1 /*
   2  * Copyright 2010, Michael Lotz, mmlr@mlotz.ch.
   3  * Copyright 2004, Axel Dörfler, axeld@pinc-software.de.
   4  * Distributed under the terms of the Haiku License.
   5  */
   6
   7 #include <new>
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12
  13 #include <lock.h>
  14
  15 #include <tty/tty_module.h>
  16
  17 #include "tty_private.h"
  18
  19 struct mutex gGlobalTTYLock;
  20 struct mutex gTTYCookieLock;
  21 struct recursive_lock gTTYRequestLock;
  22
  23
  24 static status_t
  25 init_tty_module()
  26 {
  27         // create the request mutex
  28         recursive_lock_init(&gTTYRequestLock, "tty requests");
  29
  30         // create the global mutex
  31         mutex_init(&gGlobalTTYLock, "tty global");
  32
  33         // create the cookie mutex
  34         mutex_init(&gTTYCookieLock, "tty cookies");
  35
  36         return B_OK;
  37 }
  38
  39
  40 static void
  41 uninit_tty_module()
  42 {
  43         recursive_lock_destroy(&gTTYRequestLock);
  44         mutex_destroy(&gTTYCookieLock);
  45         mutex_destroy(&gGlobalTTYLock);
  46 }
  47
  48
  49 static int32
  50 tty_module_std_ops(int32 op, ...)
  51 {
  52         switch (op) {
  53                 case B_MODULE_INIT:
  54                         return init_tty_module();
  55
  56                 case B_MODULE_UNINIT:
  57                         uninit_tty_module();
  58                         return B_OK;
  59         }
  60
  61         return B_BAD_VALUE;
  62 }
  63
  64
  65 static struct tty_module_info sTTYModule = {
  66         {
  67                 B_TTY_MODULE_NAME,
  68                 0, //B_KEEP_LOADED,
  69                 tty_module_std_ops
  70         },
  71
  72         &tty_create,
  73         &tty_destroy,
  74         &tty_create_cookie,
  75         &tty_close_cookie,
  76         &tty_destroy_cookie,
  77         &tty_read,
  78         &tty_write,
  79         &tty_control,
  80         &tty_select,
  81         &tty_deselect,
  82         &tty_hardware_signal
  83 };
  84
  85
  86 module_info *modules[] = {
  87         (module_info *)&sTTYModule,
  88         NULL
  89 };