Fix a "thread.arena" mallctl bug.
Fix a variable reversal bug in mallctl("thread.arena", ...).
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814b9bda7f
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@ -1114,8 +1114,8 @@ thread_arena_ctl(const size_t *mib, size_t miblen, void *oldp, size_t *oldlenp,
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unsigned newind, oldind;
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newind = oldind = choose_arena()->ind;
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WRITE(oldind, unsigned);
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READ(newind, unsigned);
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WRITE(newind, unsigned);
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READ(oldind, unsigned);
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if (newind != oldind) {
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arena_t *arena;
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@ -2,10 +2,13 @@
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#include <stdlib.h>
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#include <pthread.h>
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#include <string.h>
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#include <assert.h>
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#define JEMALLOC_MANGLE
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#include "jemalloc_test.h"
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#define NTHREADS 10
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void *
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thread_start(void *arg)
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{
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@ -29,6 +32,15 @@ thread_start(void *arg)
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return (void *)1;
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}
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size = sizeof(arena_ind);
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if ((err = JEMALLOC_P(mallctl)("thread.arena", &arena_ind, &size, NULL,
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0))) {
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fprintf(stderr, "%s(): Error in mallctl(): %s\n", __func__,
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strerror(err));
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return (void *)1;
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}
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assert(arena_ind == main_arena_ind);
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return (NULL);
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}
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@ -40,7 +52,8 @@ main(void)
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unsigned arena_ind;
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size_t size;
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int err;
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pthread_t thread;
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pthread_t threads[NTHREADS];
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unsigned i;
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fprintf(stderr, "Test begin\n");
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@ -60,21 +73,18 @@ main(void)
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goto RETURN;
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}
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if (pthread_create(&thread, NULL, thread_start, (void *)&arena_ind)
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!= 0) {
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fprintf(stderr, "%s(): Error in pthread_create()\n", __func__);
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for (i = 0; i < NTHREADS; i++) {
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if (pthread_create(&threads[i], NULL, thread_start,
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(void *)&arena_ind) != 0) {
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fprintf(stderr, "%s(): Error in pthread_create()\n",
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__func__);
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ret = 1;
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goto RETURN;
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}
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pthread_join(thread, (void *)&ret);
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}
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if (pthread_create(&thread, NULL, thread_start, (void *)&arena_ind)
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!= 0) {
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fprintf(stderr, "%s(): Error in pthread_create()\n", __func__);
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ret = 1;
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goto RETURN;
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}
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pthread_join(thread, (void *)&ret);
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for (i = 0; i < NTHREADS; i++)
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pthread_join(threads[i], (void *)&ret);
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RETURN:
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fprintf(stderr, "Test end\n");
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