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Small optimizations. 

- use static initializers for mtx and cond
- use smaller variables where possible
This commit is contained in:
Érico Nogueira 2021-10-03 01:32:48 -03:00
parent 976ab2003a
commit 44cb175eb3
1 changed files with 9 additions and 11 deletions
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20
remove.c
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@ -30,12 +30,12 @@ struct task {
struct queue {
pthread_mutex_t mtx;
pthread_cond_t cond;
size_t len, size;
struct task *tasks;
size_t len, size;
/* number of free threads */
long free;
unsigned free;
};
static struct queue queue = {0};
static struct queue queue = {.mtx = PTHREAD_MUTEX_INITIALIZER, .cond = PTHREAD_COND_INITIALIZER};
pthread_mutex_t fd_mtx = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t fd_cond = PTHREAD_COND_INITIALIZER;
@ -79,7 +79,7 @@ error:
return rv;
}
static long nproc;
static unsigned nproc;
static inline int queue_remove(struct queue *q, struct task *t)
{
@ -231,12 +231,10 @@ fast_path_dir:
int run_queue(void)
{
nproc = sysconf(_SC_NPROCESSORS_ONLN);
if (nproc < 1) nproc = 1;
if (nproc > 64) nproc = 64;
if (pthread_mutex_init(&queue.mtx, NULL)) return -1;
if (pthread_cond_init(&queue.cond, NULL)) return -1;
long nproc_l = sysconf(_SC_NPROCESSORS_ONLN);
if (nproc_l < 1) nproc_l = 1;
if (nproc_l > 64) nproc_l = 64;
nproc = nproc_l;
pthread_attr_t pattr;
if (pthread_attr_init(&pattr)) return -1;
@ -248,7 +246,7 @@ int run_queue(void)
pthread_t *threads = calloc(sizeof(pthread_t), nproc);
if (!threads) return -1;
int i, j = 0;
unsigned i, j = 0;
for (i = 0; i < nproc; i++) {
if (pthread_create(threads+i, &pattr, process_queue_item, &queue)) {
j = 1;