gwj / at91sam9263 · Commits

Commit 80d3580b29d84221650fd2dc7f26706d50f21197

Authored by aliguori
1 parent 5ccfae10

Clarify qemu_bh_schedule_idle() usage 

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5576 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 6 additions and 0 deletions
qemu-common.h
  View file @80d3580
... ... @@ -70,6 +70,12 @@ typedef void QEMUBHFunc(void *opaque);
70 70  
71 71 QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque);
72 72 void qemu_bh_schedule(QEMUBH *bh);
  73 +/* Bottom halfs that are scheduled from a bottom half handler are instantly
  74 + * invoked. This can create an infinite loop if a bottom half handler
  75 + * schedules itself. qemu_bh_schedule_idle() avoids this infinite loop by
  76 + * ensuring that the bottom half isn't executed until the next main loop
  77 + * iteration.
  78 + */
73 79 void qemu_bh_schedule_idle(QEMUBH *bh);
74 80 void qemu_bh_cancel(QEMUBH *bh);
75 81 void qemu_bh_delete(QEMUBH *bh);
... ...