motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-26 20:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

rng: switch request queue to QSIMPLEQ

Browse source 
QSIMPLEQ supports appending to tail in O(1) and is intrusive so
it doesn't require extra memory allocations for the bookkeeping
data.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1457010971-24771-1-git-send-email-lprosek@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Ladi Prosek 2016-03-03 14:16:11 +01:00 • committed by Amit Shah
parent 97556fe80e
commit 443590c204
4 changed files with 19 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

6
backends/rng-random.c
View file

@ -35,8 +35,8 @@ static void entropy_available(void *opaque)
{
RndRandom *s = RNG_RANDOM(opaque);
while (s->parent.requests != NULL) {
RngRequest *req = s->parent.requests->data;
while (!QSIMPLEQ_EMPTY(&s->parent.requests)) {
RngRequest *req = QSIMPLEQ_FIRST(&s->parent.requests);
ssize_t len;
len = read(s->fd, req->data, req->size);
@ -58,7 +58,7 @@ static void rng_random_request_entropy(RngBackend *b, RngRequest *req)
{
RndRandom *s = RNG_RANDOM(b);
if (s->parent.requests == NULL) {
if (QSIMPLEQ_EMPTY(&s->parent.requests)) {
/* If there are no pending requests yet, we need to
* install our fd handler. */
qemu_set_fd_handler(s->fd, entropy_available, NULL, s);