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qapi: Use QAPI_LIST_APPEND in trivial cases

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The easiest spots to use QAPI_LIST_APPEND are where we already have an
obvious pointer to the tail of a list.  While at it, consistently use
the variable name 'tail' for that purpose.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210113221013.390592-5-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake 2021-01-13 16:10:12 -06:00 • committed by Markus Armbruster
parent dc13f40c6b
commit c3033fd372
20 changed files with 96 additions and 222 deletions
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31
qga/commands-posix.c
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@ -2474,18 +2474,17 @@ static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu,
GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
{
int64_t current;
GuestLogicalProcessorList *head, **link;
GuestLogicalProcessorList *head, **tail;
long sc_max;
Error *local_err = NULL;
current = 0;
head = NULL;
link = &head;
tail = &head;
sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err);
while (local_err == NULL && current < sc_max) {
GuestLogicalProcessor *vcpu;
GuestLogicalProcessorList *entry;
int64_t id = current++;
char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/",
id);
@ -2495,10 +2494,7 @@ GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp)
vcpu->logical_id = id;
vcpu->has_can_offline = true; /* lolspeak ftw */
transfer_vcpu(vcpu, true, path, &local_err);
entry = g_malloc0(sizeof *entry);
entry->value = vcpu;
*link = entry;
link = &entry->next;
QAPI_LIST_APPEND(tail, vcpu);
}
g_free(path);
}
@ -2831,13 +2827,13 @@ out1:
GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
{
GuestMemoryBlockList *head, **link;
GuestMemoryBlockList *head, **tail;
Error *local_err = NULL;
struct dirent *de;
DIR *dp;
head = NULL;
link = &head;
tail = &head;
dp = opendir("/sys/devices/system/memory/");
if (!dp) {
@ -2859,7 +2855,6 @@ GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
*/
while ((de = readdir(dp)) != NULL) {
GuestMemoryBlock *mem_blk;
GuestMemoryBlockList *entry;
if ((strncmp(de->d_name, "memory", 6) != 0) ||
!(de->d_type & DT_DIR)) {
@ -2875,11 +2870,7 @@ GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
break;
}
entry = g_malloc0(sizeof *entry);
entry->value = mem_blk;
*link = entry;
link = &entry->next;
QAPI_LIST_APPEND(tail, mem_blk);
}
closedir(dp);
@ -2899,15 +2890,14 @@ GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp)
GuestMemoryBlockResponseList *
qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
{
GuestMemoryBlockResponseList *head, **link;
GuestMemoryBlockResponseList *head, **tail;
Error *local_err = NULL;
head = NULL;
link = &head;
tail = &head;
while (mem_blks != NULL) {
GuestMemoryBlockResponse *result;
GuestMemoryBlockResponseList *entry;
GuestMemoryBlock *current_mem_blk = mem_blks->value;
result = g_malloc0(sizeof(*result));
@ -2916,11 +2906,8 @@ qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp)
if (local_err) { /* should never happen */
goto err;
}
entry = g_malloc0(sizeof *entry);
entry->value = result;
*link = entry;
link = &entry->next;
QAPI_LIST_APPEND(tail, result);
mem_blks = mem_blks->next;
}