Re: [libvirt] [PATCH v1 24/32] util: numa: use VIR_AUTOFREE instead of VIR_FREE for scalar types

By making use of GNU C's cleanup attribute handled by the VIR_AUTOFREE macro for declaring scalar variables, majority of the VIR_FREE calls can be dropped, which in turn leads to getting rid of most of our cleanup sections. Signed-off-by: Sukrit Bhatnagar <skrtbhtngr(a)gmail.com&gt; --- src/util/virnuma.c | 79 +++++++++++++++++++++--------------------------------- 1 file changed, 31 insertions(+), 48 deletions(-) diff --git a/src/util/virnuma.c b/src/util/virnuma.c index 784db0a..841c7cb 100644 --- a/src/util/virnuma.c +++ b/src/util/virnuma.c @@ -252,8 +252,8 @@ int virNumaGetNodeCPUs(int node, virBitmapPtr *cpus) { - unsigned long *mask = NULL; - unsigned long *allonesmask = NULL; + VIR_AUTOFREE(unsigned long *) mask = NULL; + VIR_AUTOFREE(unsigned long *) allonesmask = NULL; virBitmapPtr cpumap = NULL; int ncpus = 0; int max_n_cpus = virNumaGetMaxCPUs(); @@ -300,8 +300,6 @@ virNumaGetNodeCPUs(int node, ret = ncpus; cleanup: - VIR_FREE(mask); - VIR_FREE(allonesmask); virBitmapFree(cpumap); return ret; @@ -566,52 +564,47 @@ virNumaGetHugePageInfo(int node, unsigned long long *page_avail, unsigned long long *page_free) { - int ret = -1; - char *path = NULL; - char *buf = NULL; char *end; if (page_avail) { + VIR_AUTOFREE(char *) path = NULL; + VIR_AUTOFREE(char *) buf = NULL;

if (virNumaGetHugePageInfoPath(&path, node, page_size, "nr_hugepages") < 0) - goto cleanup; + return -1; if (virFileReadAll(path, 1024, &buf) < 0) - goto cleanup; + return -1; if (virStrToLong_ull(buf, &end, 10, page_avail) < 0 || *end != '\n') { virReportError(VIR_ERR_INTERNAL_ERROR, _("unable to parse: %s"), buf); - goto cleanup; + return -1; } - VIR_FREE(buf); - VIR_FREE(path);

} if (page_free) { + VIR_AUTOFREE(char *) path = NULL; + VIR_AUTOFREE(char *) buf = NULL; if (virNumaGetHugePageInfoPath(&path, node, page_size, "free_hugepages") < 0) - goto cleanup; + return -1; if (virFileReadAll(path, 1024, &buf) < 0) - goto cleanup; + return -1; if (virStrToLong_ull(buf, &end, 10, page_free) < 0 || *end != '\n') { virReportError(VIR_ERR_INTERNAL_ERROR, _("unable to parse: %s"), buf); - goto cleanup; + return -1; } }