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pending.c 1.8KB

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  1. /*
  2. * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
  3. *
  4. * This program is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU General Public License as
  6. * published by the Free Software Foundation; either version 2 of the
  7. * License, or any later version.
  8. *
  9. * This program is distributed in the hope that it will be useful, but
  10. * WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. * General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with this program; if not, write to the Free Software
  16. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17. * 02110-1301, USA.
  18. *
  19. * You can also choose to distribute this program under the terms of
  20. * the Unmodified Binary Distribution Licence (as given in the file
  21. * COPYING.UBDL), provided that you have satisfied its requirements.
  22. */
  23. FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
  24. #include <errno.h>
  25. #include <ipxe/process.h>
  26. #include <ipxe/timer.h>
  27. #include <ipxe/pending.h>
  28. /** @file
  29. *
  30. * Pending operations
  31. *
  32. */
  33. /** Total count of pending operations */
  34. int pending_total;
  35. /**
  36. * Mark an operation as pending
  37. *
  38. * @v pending Pending operation
  39. */
  40. void pending_get ( struct pending_operation *pending ) {
  41. pending->count++;
  42. pending_total++;
  43. DBGC ( pending, "PENDING %p incremented to %d (total %d)\n",
  44. pending, pending->count, pending_total );
  45. }
  46. /**
  47. * Mark an operation as no longer pending
  48. *
  49. * @v pending Pending operation
  50. */
  51. void pending_put ( struct pending_operation *pending ) {
  52. if ( pending->count ) {
  53. pending_total--;
  54. pending->count--;
  55. DBGC ( pending, "PENDING %p decremented to %d (total %d)\n",
  56. pending, pending->count, pending_total );
  57. }
  58. }