609ae595f0
Add the "arenas.extend" mallctl, so that it is possible to create new
arenas that are outside the set that jemalloc automatically multiplexes
threads onto.
Add the ALLOCM_ARENA() flag for {,r,d}allocm(), so that it is possible
to explicitly allocate from a particular arena.
Add the "opt.dss" mallctl, which controls the default precedence of dss
allocation relative to mmap allocation.
Add the "arena.<i>.dss" mallctl, which makes it possible to set the
default dss precedence on a per arena or global basis.
Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge".
Add the "stats.arenas.<i>.dss" mallctl.
81 lines
1.5 KiB
C
81 lines
1.5 KiB
C
#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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je_thread_start(void *arg)
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{
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unsigned main_arena_ind = *(unsigned *)arg;
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void *p;
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unsigned arena_ind;
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size_t size;
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int err;
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p = malloc(1);
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if (p == NULL) {
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malloc_printf("%s(): Error in malloc()\n", __func__);
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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 = mallctl("thread.arena", &arena_ind, &size, &main_arena_ind,
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sizeof(main_arena_ind)))) {
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malloc_printf("%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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size = sizeof(arena_ind);
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if ((err = mallctl("thread.arena", &arena_ind, &size, NULL,
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0))) {
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malloc_printf("%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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int
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main(void)
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{
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int ret = 0;
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void *p;
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unsigned arena_ind;
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size_t size;
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int err;
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je_thread_t threads[NTHREADS];
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unsigned i;
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malloc_printf("Test begin\n");
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p = malloc(1);
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if (p == NULL) {
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malloc_printf("%s(): Error in malloc()\n", __func__);
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ret = 1;
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goto label_return;
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}
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size = sizeof(arena_ind);
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if ((err = mallctl("thread.arena", &arena_ind, &size, NULL, 0))) {
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malloc_printf("%s(): Error in mallctl(): %s\n", __func__,
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strerror(err));
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ret = 1;
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goto label_return;
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}
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for (i = 0; i < NTHREADS; i++) {
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je_thread_create(&threads[i], je_thread_start,
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(void *)&arena_ind);
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}
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for (i = 0; i < NTHREADS; i++)
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je_thread_join(threads[i], (void *)&ret);
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label_return:
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malloc_printf("Test end\n");
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return (ret);
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}
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