diff options
Diffstat (limited to 'deps/jemalloc/test/unit/mallctl.c')
| -rw-r--r-- | deps/jemalloc/test/unit/mallctl.c | 1274 |
1 files changed, 1274 insertions, 0 deletions
diff --git a/deps/jemalloc/test/unit/mallctl.c b/deps/jemalloc/test/unit/mallctl.c new file mode 100644 index 0000000..6efc8f1 --- /dev/null +++ b/deps/jemalloc/test/unit/mallctl.c @@ -0,0 +1,1274 @@ +#include "test/jemalloc_test.h" + +#include "jemalloc/internal/ctl.h" +#include "jemalloc/internal/hook.h" +#include "jemalloc/internal/util.h" + +TEST_BEGIN(test_mallctl_errors) { + uint64_t epoch; + size_t sz; + + expect_d_eq(mallctl("no_such_name", NULL, NULL, NULL, 0), ENOENT, + "mallctl() should return ENOENT for non-existent names"); + + expect_d_eq(mallctl("version", NULL, NULL, "0.0.0", strlen("0.0.0")), + EPERM, "mallctl() should return EPERM on attempt to write " + "read-only value"); + + expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, + sizeof(epoch)-1), EINVAL, + "mallctl() should return EINVAL for input size mismatch"); + expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&epoch, + sizeof(epoch)+1), EINVAL, + "mallctl() should return EINVAL for input size mismatch"); + + sz = sizeof(epoch)-1; + expect_d_eq(mallctl("epoch", (void *)&epoch, &sz, NULL, 0), EINVAL, + "mallctl() should return EINVAL for output size mismatch"); + sz = sizeof(epoch)+1; + expect_d_eq(mallctl("epoch", (void *)&epoch, &sz, NULL, 0), EINVAL, + "mallctl() should return EINVAL for output size mismatch"); +} +TEST_END + +TEST_BEGIN(test_mallctlnametomib_errors) { + size_t mib[1]; + size_t miblen; + + miblen = sizeof(mib)/sizeof(size_t); + expect_d_eq(mallctlnametomib("no_such_name", mib, &miblen), ENOENT, + "mallctlnametomib() should return ENOENT for non-existent names"); +} +TEST_END + +TEST_BEGIN(test_mallctlbymib_errors) { + uint64_t epoch; + size_t sz; + size_t mib[1]; + size_t miblen; + + miblen = sizeof(mib)/sizeof(size_t); + expect_d_eq(mallctlnametomib("version", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, "0.0.0", + strlen("0.0.0")), EPERM, "mallctl() should return EPERM on " + "attempt to write read-only value"); + + miblen = sizeof(mib)/sizeof(size_t); + expect_d_eq(mallctlnametomib("epoch", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, (void *)&epoch, + sizeof(epoch)-1), EINVAL, + "mallctlbymib() should return EINVAL for input size mismatch"); + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, (void *)&epoch, + sizeof(epoch)+1), EINVAL, + "mallctlbymib() should return EINVAL for input size mismatch"); + + sz = sizeof(epoch)-1; + expect_d_eq(mallctlbymib(mib, miblen, (void *)&epoch, &sz, NULL, 0), + EINVAL, + "mallctlbymib() should return EINVAL for output size mismatch"); + sz = sizeof(epoch)+1; + expect_d_eq(mallctlbymib(mib, miblen, (void *)&epoch, &sz, NULL, 0), + EINVAL, + "mallctlbymib() should return EINVAL for output size mismatch"); +} +TEST_END + +TEST_BEGIN(test_mallctl_read_write) { + uint64_t old_epoch, new_epoch; + size_t sz = sizeof(old_epoch); + + /* Blind. */ + expect_d_eq(mallctl("epoch", NULL, NULL, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size"); + + /* Read. */ + expect_d_eq(mallctl("epoch", (void *)&old_epoch, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size"); + + /* Write. */ + expect_d_eq(mallctl("epoch", NULL, NULL, (void *)&new_epoch, + sizeof(new_epoch)), 0, "Unexpected mallctl() failure"); + expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size"); + + /* Read+write. */ + expect_d_eq(mallctl("epoch", (void *)&old_epoch, &sz, + (void *)&new_epoch, sizeof(new_epoch)), 0, + "Unexpected mallctl() failure"); + expect_zu_eq(sz, sizeof(old_epoch), "Unexpected output size"); +} +TEST_END + +TEST_BEGIN(test_mallctlnametomib_short_mib) { + size_t mib[4]; + size_t miblen; + + miblen = 3; + mib[3] = 42; + expect_d_eq(mallctlnametomib("arenas.bin.0.nregs", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + expect_zu_eq(miblen, 3, "Unexpected mib output length"); + expect_zu_eq(mib[3], 42, + "mallctlnametomib() wrote past the end of the input mib"); +} +TEST_END + +TEST_BEGIN(test_mallctlnametomib_short_name) { + size_t mib[4]; + size_t miblen; + + miblen = 4; + mib[3] = 42; + expect_d_eq(mallctlnametomib("arenas.bin.0", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + expect_zu_eq(miblen, 3, "Unexpected mib output length"); + expect_zu_eq(mib[3], 42, + "mallctlnametomib() wrote past the end of the input mib"); +} +TEST_END + +TEST_BEGIN(test_mallctlmibnametomib) { + size_t mib[4]; + size_t miblen = 4; + uint32_t result, result_ref; + size_t len_result = sizeof(uint32_t); + + tsd_t *tsd = tsd_fetch(); + + /* Error cases */ + assert_d_eq(ctl_mibnametomib(tsd, mib, 0, "bob", &miblen), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + assert_d_eq(ctl_mibnametomib(tsd, mib, 0, "9999", &miblen), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + + /* Valid case. */ + assert_d_eq(ctl_mibnametomib(tsd, mib, 0, "arenas", &miblen), 0, ""); + assert_zu_eq(miblen, 1, ""); + miblen = 4; + assert_d_eq(ctl_mibnametomib(tsd, mib, 1, "bin", &miblen), 0, ""); + assert_zu_eq(miblen, 2, ""); + expect_d_eq(mallctlbymib(mib, miblen, &result, &len_result, NULL, 0), + ENOENT, "mallctlbymib() should fail on partial path"); + + /* Error cases. */ + miblen = 4; + assert_d_eq(ctl_mibnametomib(tsd, mib, 2, "bob", &miblen), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + assert_d_eq(ctl_mibnametomib(tsd, mib, 2, "9999", &miblen), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + + /* Valid case. */ + assert_d_eq(ctl_mibnametomib(tsd, mib, 2, "0", &miblen), 0, ""); + assert_zu_eq(miblen, 3, ""); + expect_d_eq(mallctlbymib(mib, miblen, &result, &len_result, NULL, 0), + ENOENT, "mallctlbymib() should fail on partial path"); + + /* Error cases. */ + miblen = 4; + assert_d_eq(ctl_mibnametomib(tsd, mib, 3, "bob", &miblen), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + assert_d_eq(ctl_mibnametomib(tsd, mib, 3, "9999", &miblen), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + + /* Valid case. */ + assert_d_eq(ctl_mibnametomib(tsd, mib, 3, "nregs", &miblen), 0, ""); + assert_zu_eq(miblen, 4, ""); + assert_d_eq(mallctlbymib(mib, miblen, &result, &len_result, NULL, 0), + 0, "Unexpected mallctlbymib() failure"); + assert_d_eq(mallctl("arenas.bin.0.nregs", &result_ref, &len_result, + NULL, 0), 0, "Unexpected mallctl() failure"); + expect_zu_eq(result, result_ref, + "mallctlbymib() and mallctl() returned different result"); +} +TEST_END + +TEST_BEGIN(test_mallctlbymibname) { + size_t mib[4]; + size_t miblen = 4; + uint32_t result, result_ref; + size_t len_result = sizeof(uint32_t); + + tsd_t *tsd = tsd_fetch(); + + /* Error cases. */ + + assert_d_eq(mallctlnametomib("arenas", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + assert_zu_eq(miblen, 1, ""); + + miblen = 4; + assert_d_eq(ctl_bymibname(tsd, mib, 1, "bin.0", &miblen, + &result, &len_result, NULL, 0), ENOENT, ""); + miblen = 4; + assert_d_eq(ctl_bymibname(tsd, mib, 1, "bin.0.bob", &miblen, + &result, &len_result, NULL, 0), ENOENT, ""); + assert_zu_eq(miblen, 4, ""); + + /* Valid cases. */ + + assert_d_eq(mallctl("arenas.bin.0.nregs", &result_ref, &len_result, + NULL, 0), 0, "Unexpected mallctl() failure"); + miblen = 4; + + assert_d_eq(ctl_bymibname(tsd, mib, 0, "arenas.bin.0.nregs", &miblen, + &result, &len_result, NULL, 0), 0, ""); + assert_zu_eq(miblen, 4, ""); + expect_zu_eq(result, result_ref, "Unexpected result"); + + assert_d_eq(ctl_bymibname(tsd, mib, 1, "bin.0.nregs", &miblen, &result, + &len_result, NULL, 0), 0, ""); + assert_zu_eq(miblen, 4, ""); + expect_zu_eq(result, result_ref, "Unexpected result"); + + assert_d_eq(ctl_bymibname(tsd, mib, 2, "0.nregs", &miblen, &result, + &len_result, NULL, 0), 0, ""); + assert_zu_eq(miblen, 4, ""); + expect_zu_eq(result, result_ref, "Unexpected result"); + + assert_d_eq(ctl_bymibname(tsd, mib, 3, "nregs", &miblen, &result, + &len_result, NULL, 0), 0, ""); + assert_zu_eq(miblen, 4, ""); + expect_zu_eq(result, result_ref, "Unexpected result"); +} +TEST_END + +TEST_BEGIN(test_mallctl_config) { +#define TEST_MALLCTL_CONFIG(config, t) do { \ + t oldval; \ + size_t sz = sizeof(oldval); \ + expect_d_eq(mallctl("config."#config, (void *)&oldval, &sz, \ + NULL, 0), 0, "Unexpected mallctl() failure"); \ + expect_b_eq(oldval, config_##config, "Incorrect config value"); \ + expect_zu_eq(sz, sizeof(oldval), "Unexpected output size"); \ +} while (0) + + TEST_MALLCTL_CONFIG(cache_oblivious, bool); + TEST_MALLCTL_CONFIG(debug, bool); + TEST_MALLCTL_CONFIG(fill, bool); + TEST_MALLCTL_CONFIG(lazy_lock, bool); + TEST_MALLCTL_CONFIG(malloc_conf, const char *); + TEST_MALLCTL_CONFIG(prof, bool); + TEST_MALLCTL_CONFIG(prof_libgcc, bool); + TEST_MALLCTL_CONFIG(prof_libunwind, bool); + TEST_MALLCTL_CONFIG(stats, bool); + TEST_MALLCTL_CONFIG(utrace, bool); + TEST_MALLCTL_CONFIG(xmalloc, bool); + +#undef TEST_MALLCTL_CONFIG +} +TEST_END + +TEST_BEGIN(test_mallctl_opt) { + bool config_always = true; + +#define TEST_MALLCTL_OPT(t, opt, config) do { \ + t oldval; \ + size_t sz = sizeof(oldval); \ + int expected = config_##config ? 0 : ENOENT; \ + int result = mallctl("opt."#opt, (void *)&oldval, &sz, NULL, \ + 0); \ + expect_d_eq(result, expected, \ + "Unexpected mallctl() result for opt."#opt); \ + expect_zu_eq(sz, sizeof(oldval), "Unexpected output size"); \ +} while (0) + + TEST_MALLCTL_OPT(bool, abort, always); + TEST_MALLCTL_OPT(bool, abort_conf, always); + TEST_MALLCTL_OPT(bool, cache_oblivious, always); + TEST_MALLCTL_OPT(bool, trust_madvise, always); + TEST_MALLCTL_OPT(bool, confirm_conf, always); + TEST_MALLCTL_OPT(const char *, metadata_thp, always); + TEST_MALLCTL_OPT(bool, retain, always); + TEST_MALLCTL_OPT(const char *, dss, always); + TEST_MALLCTL_OPT(bool, hpa, always); + TEST_MALLCTL_OPT(size_t, hpa_slab_max_alloc, always); + TEST_MALLCTL_OPT(size_t, hpa_sec_nshards, always); + TEST_MALLCTL_OPT(size_t, hpa_sec_max_alloc, always); + TEST_MALLCTL_OPT(size_t, hpa_sec_max_bytes, always); + TEST_MALLCTL_OPT(size_t, hpa_sec_bytes_after_flush, always); + TEST_MALLCTL_OPT(size_t, hpa_sec_batch_fill_extra, always); + TEST_MALLCTL_OPT(unsigned, narenas, always); + TEST_MALLCTL_OPT(const char *, percpu_arena, always); + TEST_MALLCTL_OPT(size_t, oversize_threshold, always); + TEST_MALLCTL_OPT(bool, background_thread, always); + TEST_MALLCTL_OPT(ssize_t, dirty_decay_ms, always); + TEST_MALLCTL_OPT(ssize_t, muzzy_decay_ms, always); + TEST_MALLCTL_OPT(bool, stats_print, always); + TEST_MALLCTL_OPT(const char *, stats_print_opts, always); + TEST_MALLCTL_OPT(int64_t, stats_interval, always); + TEST_MALLCTL_OPT(const char *, stats_interval_opts, always); + TEST_MALLCTL_OPT(const char *, junk, fill); + TEST_MALLCTL_OPT(bool, zero, fill); + TEST_MALLCTL_OPT(bool, utrace, utrace); + TEST_MALLCTL_OPT(bool, xmalloc, xmalloc); + TEST_MALLCTL_OPT(bool, tcache, always); + TEST_MALLCTL_OPT(size_t, lg_extent_max_active_fit, always); + TEST_MALLCTL_OPT(size_t, tcache_max, always); + TEST_MALLCTL_OPT(const char *, thp, always); + TEST_MALLCTL_OPT(const char *, zero_realloc, always); + TEST_MALLCTL_OPT(bool, prof, prof); + TEST_MALLCTL_OPT(const char *, prof_prefix, prof); + TEST_MALLCTL_OPT(bool, prof_active, prof); + TEST_MALLCTL_OPT(ssize_t, lg_prof_sample, prof); + TEST_MALLCTL_OPT(bool, prof_accum, prof); + TEST_MALLCTL_OPT(ssize_t, lg_prof_interval, prof); + TEST_MALLCTL_OPT(bool, prof_gdump, prof); + TEST_MALLCTL_OPT(bool, prof_final, prof); + TEST_MALLCTL_OPT(bool, prof_leak, prof); + TEST_MALLCTL_OPT(bool, prof_leak_error, prof); + TEST_MALLCTL_OPT(ssize_t, prof_recent_alloc_max, prof); + TEST_MALLCTL_OPT(bool, prof_stats, prof); + TEST_MALLCTL_OPT(bool, prof_sys_thread_name, prof); + TEST_MALLCTL_OPT(ssize_t, lg_san_uaf_align, uaf_detection); + +#undef TEST_MALLCTL_OPT +} +TEST_END + +TEST_BEGIN(test_manpage_example) { + unsigned nbins, i; + size_t mib[4]; + size_t len, miblen; + + len = sizeof(nbins); + expect_d_eq(mallctl("arenas.nbins", (void *)&nbins, &len, NULL, 0), 0, + "Unexpected mallctl() failure"); + + miblen = 4; + expect_d_eq(mallctlnametomib("arenas.bin.0.size", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + for (i = 0; i < nbins; i++) { + size_t bin_size; + + mib[2] = i; + len = sizeof(bin_size); + expect_d_eq(mallctlbymib(mib, miblen, (void *)&bin_size, &len, + NULL, 0), 0, "Unexpected mallctlbymib() failure"); + /* Do something with bin_size... */ + } +} +TEST_END + +TEST_BEGIN(test_tcache_none) { + test_skip_if(!opt_tcache); + + /* Allocate p and q. */ + void *p0 = mallocx(42, 0); + expect_ptr_not_null(p0, "Unexpected mallocx() failure"); + void *q = mallocx(42, 0); + expect_ptr_not_null(q, "Unexpected mallocx() failure"); + + /* Deallocate p and q, but bypass the tcache for q. */ + dallocx(p0, 0); + dallocx(q, MALLOCX_TCACHE_NONE); + + /* Make sure that tcache-based allocation returns p, not q. */ + void *p1 = mallocx(42, 0); + expect_ptr_not_null(p1, "Unexpected mallocx() failure"); + if (!opt_prof && !san_uaf_detection_enabled()) { + expect_ptr_eq(p0, p1, + "Expected tcache to allocate cached region"); + } + + /* Clean up. */ + dallocx(p1, MALLOCX_TCACHE_NONE); +} +TEST_END + +TEST_BEGIN(test_tcache) { +#define NTCACHES 10 + unsigned tis[NTCACHES]; + void *ps[NTCACHES]; + void *qs[NTCACHES]; + unsigned i; + size_t sz, psz, qsz; + + psz = 42; + qsz = nallocx(psz, 0) + 1; + + /* Create tcaches. */ + for (i = 0; i < NTCACHES; i++) { + sz = sizeof(unsigned); + expect_d_eq(mallctl("tcache.create", (void *)&tis[i], &sz, NULL, + 0), 0, "Unexpected mallctl() failure, i=%u", i); + } + + /* Exercise tcache ID recycling. */ + for (i = 0; i < NTCACHES; i++) { + expect_d_eq(mallctl("tcache.destroy", NULL, NULL, + (void *)&tis[i], sizeof(unsigned)), 0, + "Unexpected mallctl() failure, i=%u", i); + } + for (i = 0; i < NTCACHES; i++) { + sz = sizeof(unsigned); + expect_d_eq(mallctl("tcache.create", (void *)&tis[i], &sz, NULL, + 0), 0, "Unexpected mallctl() failure, i=%u", i); + } + + /* Flush empty tcaches. */ + for (i = 0; i < NTCACHES; i++) { + expect_d_eq(mallctl("tcache.flush", NULL, NULL, (void *)&tis[i], + sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u", + i); + } + + /* Cache some allocations. */ + for (i = 0; i < NTCACHES; i++) { + ps[i] = mallocx(psz, MALLOCX_TCACHE(tis[i])); + expect_ptr_not_null(ps[i], "Unexpected mallocx() failure, i=%u", + i); + dallocx(ps[i], MALLOCX_TCACHE(tis[i])); + + qs[i] = mallocx(qsz, MALLOCX_TCACHE(tis[i])); + expect_ptr_not_null(qs[i], "Unexpected mallocx() failure, i=%u", + i); + dallocx(qs[i], MALLOCX_TCACHE(tis[i])); + } + + /* Verify that tcaches allocate cached regions. */ + for (i = 0; i < NTCACHES; i++) { + void *p0 = ps[i]; + ps[i] = mallocx(psz, MALLOCX_TCACHE(tis[i])); + expect_ptr_not_null(ps[i], "Unexpected mallocx() failure, i=%u", + i); + if (!san_uaf_detection_enabled()) { + expect_ptr_eq(ps[i], p0, "Expected mallocx() to " + "allocate cached region, i=%u", i); + } + } + + /* Verify that reallocation uses cached regions. */ + for (i = 0; i < NTCACHES; i++) { + void *q0 = qs[i]; + qs[i] = rallocx(ps[i], qsz, MALLOCX_TCACHE(tis[i])); + expect_ptr_not_null(qs[i], "Unexpected rallocx() failure, i=%u", + i); + if (!san_uaf_detection_enabled()) { + expect_ptr_eq(qs[i], q0, "Expected rallocx() to " + "allocate cached region, i=%u", i); + } + /* Avoid undefined behavior in case of test failure. */ + if (qs[i] == NULL) { + qs[i] = ps[i]; + } + } + for (i = 0; i < NTCACHES; i++) { + dallocx(qs[i], MALLOCX_TCACHE(tis[i])); + } + + /* Flush some non-empty tcaches. */ + for (i = 0; i < NTCACHES/2; i++) { + expect_d_eq(mallctl("tcache.flush", NULL, NULL, (void *)&tis[i], + sizeof(unsigned)), 0, "Unexpected mallctl() failure, i=%u", + i); + } + + /* Destroy tcaches. */ + for (i = 0; i < NTCACHES; i++) { + expect_d_eq(mallctl("tcache.destroy", NULL, NULL, + (void *)&tis[i], sizeof(unsigned)), 0, + "Unexpected mallctl() failure, i=%u", i); + } +} +TEST_END + +TEST_BEGIN(test_thread_arena) { + unsigned old_arena_ind, new_arena_ind, narenas; + + const char *opa; + size_t sz = sizeof(opa); + expect_d_eq(mallctl("opt.percpu_arena", (void *)&opa, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + + sz = sizeof(unsigned); + expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0), + 0, "Unexpected mallctl() failure"); + if (opt_oversize_threshold != 0) { + narenas--; + } + expect_u_eq(narenas, opt_narenas, "Number of arenas incorrect"); + + if (strcmp(opa, "disabled") == 0) { + new_arena_ind = narenas - 1; + expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz, + (void *)&new_arena_ind, sizeof(unsigned)), 0, + "Unexpected mallctl() failure"); + new_arena_ind = 0; + expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz, + (void *)&new_arena_ind, sizeof(unsigned)), 0, + "Unexpected mallctl() failure"); + } else { + expect_d_eq(mallctl("thread.arena", (void *)&old_arena_ind, &sz, + NULL, 0), 0, "Unexpected mallctl() failure"); + new_arena_ind = percpu_arena_ind_limit(opt_percpu_arena) - 1; + if (old_arena_ind != new_arena_ind) { + expect_d_eq(mallctl("thread.arena", + (void *)&old_arena_ind, &sz, (void *)&new_arena_ind, + sizeof(unsigned)), EPERM, "thread.arena ctl " + "should not be allowed with percpu arena"); + } + } +} +TEST_END + +TEST_BEGIN(test_arena_i_initialized) { + unsigned narenas, i; + size_t sz; + size_t mib[3]; + size_t miblen = sizeof(mib) / sizeof(size_t); + bool initialized; + + sz = sizeof(narenas); + expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0), + 0, "Unexpected mallctl() failure"); + + expect_d_eq(mallctlnametomib("arena.0.initialized", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + for (i = 0; i < narenas; i++) { + mib[1] = i; + sz = sizeof(initialized); + expect_d_eq(mallctlbymib(mib, miblen, &initialized, &sz, NULL, + 0), 0, "Unexpected mallctl() failure"); + } + + mib[1] = MALLCTL_ARENAS_ALL; + sz = sizeof(initialized); + expect_d_eq(mallctlbymib(mib, miblen, &initialized, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_true(initialized, + "Merged arena statistics should always be initialized"); + + /* Equivalent to the above but using mallctl() directly. */ + sz = sizeof(initialized); + expect_d_eq(mallctl( + "arena." STRINGIFY(MALLCTL_ARENAS_ALL) ".initialized", + (void *)&initialized, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_true(initialized, + "Merged arena statistics should always be initialized"); +} +TEST_END + +TEST_BEGIN(test_arena_i_dirty_decay_ms) { + ssize_t dirty_decay_ms, orig_dirty_decay_ms, prev_dirty_decay_ms; + size_t sz = sizeof(ssize_t); + + expect_d_eq(mallctl("arena.0.dirty_decay_ms", + (void *)&orig_dirty_decay_ms, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + + dirty_decay_ms = -2; + expect_d_eq(mallctl("arena.0.dirty_decay_ms", NULL, NULL, + (void *)&dirty_decay_ms, sizeof(ssize_t)), EFAULT, + "Unexpected mallctl() success"); + + dirty_decay_ms = 0x7fffffff; + expect_d_eq(mallctl("arena.0.dirty_decay_ms", NULL, NULL, + (void *)&dirty_decay_ms, sizeof(ssize_t)), 0, + "Unexpected mallctl() failure"); + + for (prev_dirty_decay_ms = dirty_decay_ms, dirty_decay_ms = -1; + dirty_decay_ms < 20; prev_dirty_decay_ms = dirty_decay_ms, + dirty_decay_ms++) { + ssize_t old_dirty_decay_ms; + + expect_d_eq(mallctl("arena.0.dirty_decay_ms", + (void *)&old_dirty_decay_ms, &sz, (void *)&dirty_decay_ms, + sizeof(ssize_t)), 0, "Unexpected mallctl() failure"); + expect_zd_eq(old_dirty_decay_ms, prev_dirty_decay_ms, + "Unexpected old arena.0.dirty_decay_ms"); + } +} +TEST_END + +TEST_BEGIN(test_arena_i_muzzy_decay_ms) { + ssize_t muzzy_decay_ms, orig_muzzy_decay_ms, prev_muzzy_decay_ms; + size_t sz = sizeof(ssize_t); + + expect_d_eq(mallctl("arena.0.muzzy_decay_ms", + (void *)&orig_muzzy_decay_ms, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + + muzzy_decay_ms = -2; + expect_d_eq(mallctl("arena.0.muzzy_decay_ms", NULL, NULL, + (void *)&muzzy_decay_ms, sizeof(ssize_t)), EFAULT, + "Unexpected mallctl() success"); + + muzzy_decay_ms = 0x7fffffff; + expect_d_eq(mallctl("arena.0.muzzy_decay_ms", NULL, NULL, + (void *)&muzzy_decay_ms, sizeof(ssize_t)), 0, + "Unexpected mallctl() failure"); + + for (prev_muzzy_decay_ms = muzzy_decay_ms, muzzy_decay_ms = -1; + muzzy_decay_ms < 20; prev_muzzy_decay_ms = muzzy_decay_ms, + muzzy_decay_ms++) { + ssize_t old_muzzy_decay_ms; + + expect_d_eq(mallctl("arena.0.muzzy_decay_ms", + (void *)&old_muzzy_decay_ms, &sz, (void *)&muzzy_decay_ms, + sizeof(ssize_t)), 0, "Unexpected mallctl() failure"); + expect_zd_eq(old_muzzy_decay_ms, prev_muzzy_decay_ms, + "Unexpected old arena.0.muzzy_decay_ms"); + } +} +TEST_END + +TEST_BEGIN(test_arena_i_purge) { + unsigned narenas; + size_t sz = sizeof(unsigned); + size_t mib[3]; + size_t miblen = 3; + + expect_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0, + "Unexpected mallctl() failure"); + + expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0), + 0, "Unexpected mallctl() failure"); + expect_d_eq(mallctlnametomib("arena.0.purge", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + mib[1] = narenas; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0, + "Unexpected mallctlbymib() failure"); + + mib[1] = MALLCTL_ARENAS_ALL; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0, + "Unexpected mallctlbymib() failure"); +} +TEST_END + +TEST_BEGIN(test_arena_i_decay) { + unsigned narenas; + size_t sz = sizeof(unsigned); + size_t mib[3]; + size_t miblen = 3; + + expect_d_eq(mallctl("arena.0.decay", NULL, NULL, NULL, 0), 0, + "Unexpected mallctl() failure"); + + expect_d_eq(mallctl("arenas.narenas", (void *)&narenas, &sz, NULL, 0), + 0, "Unexpected mallctl() failure"); + expect_d_eq(mallctlnametomib("arena.0.decay", mib, &miblen), 0, + "Unexpected mallctlnametomib() failure"); + mib[1] = narenas; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0, + "Unexpected mallctlbymib() failure"); + + mib[1] = MALLCTL_ARENAS_ALL; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, NULL, 0), 0, + "Unexpected mallctlbymib() failure"); +} +TEST_END + +TEST_BEGIN(test_arena_i_dss) { + const char *dss_prec_old, *dss_prec_new; + size_t sz = sizeof(dss_prec_old); + size_t mib[3]; + size_t miblen; + + miblen = sizeof(mib)/sizeof(size_t); + expect_d_eq(mallctlnametomib("arena.0.dss", mib, &miblen), 0, + "Unexpected mallctlnametomib() error"); + + dss_prec_new = "disabled"; + expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz, + (void *)&dss_prec_new, sizeof(dss_prec_new)), 0, + "Unexpected mallctl() failure"); + expect_str_ne(dss_prec_old, "primary", + "Unexpected default for dss precedence"); + + expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_new, &sz, + (void *)&dss_prec_old, sizeof(dss_prec_old)), 0, + "Unexpected mallctl() failure"); + + expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz, NULL, + 0), 0, "Unexpected mallctl() failure"); + expect_str_ne(dss_prec_old, "primary", + "Unexpected value for dss precedence"); + + mib[1] = narenas_total_get(); + dss_prec_new = "disabled"; + expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz, + (void *)&dss_prec_new, sizeof(dss_prec_new)), 0, + "Unexpected mallctl() failure"); + expect_str_ne(dss_prec_old, "primary", + "Unexpected default for dss precedence"); + + expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_new, &sz, + (void *)&dss_prec_old, sizeof(dss_prec_new)), 0, + "Unexpected mallctl() failure"); + + expect_d_eq(mallctlbymib(mib, miblen, (void *)&dss_prec_old, &sz, NULL, + 0), 0, "Unexpected mallctl() failure"); + expect_str_ne(dss_prec_old, "primary", + "Unexpected value for dss precedence"); +} +TEST_END + +TEST_BEGIN(test_arena_i_retain_grow_limit) { + size_t old_limit, new_limit, default_limit; + size_t mib[3]; + size_t miblen; + + bool retain_enabled; + size_t sz = sizeof(retain_enabled); + expect_d_eq(mallctl("opt.retain", &retain_enabled, &sz, NULL, 0), + 0, "Unexpected mallctl() failure"); + test_skip_if(!retain_enabled); + + sz = sizeof(default_limit); + miblen = sizeof(mib)/sizeof(size_t); + expect_d_eq(mallctlnametomib("arena.0.retain_grow_limit", mib, &miblen), + 0, "Unexpected mallctlnametomib() error"); + + expect_d_eq(mallctlbymib(mib, miblen, &default_limit, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_zu_eq(default_limit, SC_LARGE_MAXCLASS, + "Unexpected default for retain_grow_limit"); + + new_limit = PAGE - 1; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &new_limit, + sizeof(new_limit)), EFAULT, "Unexpected mallctl() success"); + + new_limit = PAGE + 1; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &new_limit, + sizeof(new_limit)), 0, "Unexpected mallctl() failure"); + expect_d_eq(mallctlbymib(mib, miblen, &old_limit, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_zu_eq(old_limit, PAGE, + "Unexpected value for retain_grow_limit"); + + /* Expect grow less than psize class 10. */ + new_limit = sz_pind2sz(10) - 1; + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &new_limit, + sizeof(new_limit)), 0, "Unexpected mallctl() failure"); + expect_d_eq(mallctlbymib(mib, miblen, &old_limit, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_zu_eq(old_limit, sz_pind2sz(9), + "Unexpected value for retain_grow_limit"); + + /* Restore to default. */ + expect_d_eq(mallctlbymib(mib, miblen, NULL, NULL, &default_limit, + sizeof(default_limit)), 0, "Unexpected mallctl() failure"); +} +TEST_END + +TEST_BEGIN(test_arenas_dirty_decay_ms) { + ssize_t dirty_decay_ms, orig_dirty_decay_ms, prev_dirty_decay_ms; + size_t sz = sizeof(ssize_t); + + expect_d_eq(mallctl("arenas.dirty_decay_ms", + (void *)&orig_dirty_decay_ms, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + + dirty_decay_ms = -2; + expect_d_eq(mallctl("arenas.dirty_decay_ms", NULL, NULL, + (void *)&dirty_decay_ms, sizeof(ssize_t)), EFAULT, + "Unexpected mallctl() success"); + + dirty_decay_ms = 0x7fffffff; + expect_d_eq(mallctl("arenas.dirty_decay_ms", NULL, NULL, + (void *)&dirty_decay_ms, sizeof(ssize_t)), 0, + "Expected mallctl() failure"); + + for (prev_dirty_decay_ms = dirty_decay_ms, dirty_decay_ms = -1; + dirty_decay_ms < 20; prev_dirty_decay_ms = dirty_decay_ms, + dirty_decay_ms++) { + ssize_t old_dirty_decay_ms; + + expect_d_eq(mallctl("arenas.dirty_decay_ms", + (void *)&old_dirty_decay_ms, &sz, (void *)&dirty_decay_ms, + sizeof(ssize_t)), 0, "Unexpected mallctl() failure"); + expect_zd_eq(old_dirty_decay_ms, prev_dirty_decay_ms, + "Unexpected old arenas.dirty_decay_ms"); + } +} +TEST_END + +TEST_BEGIN(test_arenas_muzzy_decay_ms) { + ssize_t muzzy_decay_ms, orig_muzzy_decay_ms, prev_muzzy_decay_ms; + size_t sz = sizeof(ssize_t); + + expect_d_eq(mallctl("arenas.muzzy_decay_ms", + (void *)&orig_muzzy_decay_ms, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + + muzzy_decay_ms = -2; + expect_d_eq(mallctl("arenas.muzzy_decay_ms", NULL, NULL, + (void *)&muzzy_decay_ms, sizeof(ssize_t)), EFAULT, + "Unexpected mallctl() success"); + + muzzy_decay_ms = 0x7fffffff; + expect_d_eq(mallctl("arenas.muzzy_decay_ms", NULL, NULL, + (void *)&muzzy_decay_ms, sizeof(ssize_t)), 0, + "Expected mallctl() failure"); + + for (prev_muzzy_decay_ms = muzzy_decay_ms, muzzy_decay_ms = -1; + muzzy_decay_ms < 20; prev_muzzy_decay_ms = muzzy_decay_ms, + muzzy_decay_ms++) { + ssize_t old_muzzy_decay_ms; + + expect_d_eq(mallctl("arenas.muzzy_decay_ms", + (void *)&old_muzzy_decay_ms, &sz, (void *)&muzzy_decay_ms, + sizeof(ssize_t)), 0, "Unexpected mallctl() failure"); + expect_zd_eq(old_muzzy_decay_ms, prev_muzzy_decay_ms, + "Unexpected old arenas.muzzy_decay_ms"); + } +} +TEST_END + +TEST_BEGIN(test_arenas_constants) { +#define TEST_ARENAS_CONSTANT(t, name, expected) do { \ + t name; \ + size_t sz = sizeof(t); \ + expect_d_eq(mallctl("arenas."#name, (void *)&name, &sz, NULL, \ + 0), 0, "Unexpected mallctl() failure"); \ + expect_zu_eq(name, expected, "Incorrect "#name" size"); \ +} while (0) + + TEST_ARENAS_CONSTANT(size_t, quantum, QUANTUM); + TEST_ARENAS_CONSTANT(size_t, page, PAGE); + TEST_ARENAS_CONSTANT(unsigned, nbins, SC_NBINS); + TEST_ARENAS_CONSTANT(unsigned, nlextents, SC_NSIZES - SC_NBINS); + +#undef TEST_ARENAS_CONSTANT +} +TEST_END + +TEST_BEGIN(test_arenas_bin_constants) { +#define TEST_ARENAS_BIN_CONSTANT(t, name, expected) do { \ + t name; \ + size_t sz = sizeof(t); \ + expect_d_eq(mallctl("arenas.bin.0."#name, (void *)&name, &sz, \ + NULL, 0), 0, "Unexpected mallctl() failure"); \ + expect_zu_eq(name, expected, "Incorrect "#name" size"); \ +} while (0) + + TEST_ARENAS_BIN_CONSTANT(size_t, size, bin_infos[0].reg_size); + TEST_ARENAS_BIN_CONSTANT(uint32_t, nregs, bin_infos[0].nregs); + TEST_ARENAS_BIN_CONSTANT(size_t, slab_size, + bin_infos[0].slab_size); + TEST_ARENAS_BIN_CONSTANT(uint32_t, nshards, bin_infos[0].n_shards); + +#undef TEST_ARENAS_BIN_CONSTANT +} +TEST_END + +TEST_BEGIN(test_arenas_lextent_constants) { +#define TEST_ARENAS_LEXTENT_CONSTANT(t, name, expected) do { \ + t name; \ + size_t sz = sizeof(t); \ + expect_d_eq(mallctl("arenas.lextent.0."#name, (void *)&name, \ + &sz, NULL, 0), 0, "Unexpected mallctl() failure"); \ + expect_zu_eq(name, expected, "Incorrect "#name" size"); \ +} while (0) + + TEST_ARENAS_LEXTENT_CONSTANT(size_t, size, + SC_LARGE_MINCLASS); + +#undef TEST_ARENAS_LEXTENT_CONSTANT +} +TEST_END + +TEST_BEGIN(test_arenas_create) { + unsigned narenas_before, arena, narenas_after; + size_t sz = sizeof(unsigned); + + expect_d_eq(mallctl("arenas.narenas", (void *)&narenas_before, &sz, + NULL, 0), 0, "Unexpected mallctl() failure"); + expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + expect_d_eq(mallctl("arenas.narenas", (void *)&narenas_after, &sz, NULL, + 0), 0, "Unexpected mallctl() failure"); + + expect_u_eq(narenas_before+1, narenas_after, + "Unexpected number of arenas before versus after extension"); + expect_u_eq(arena, narenas_after-1, "Unexpected arena index"); +} +TEST_END + +TEST_BEGIN(test_arenas_lookup) { + unsigned arena, arena1; + void *ptr; + size_t sz = sizeof(unsigned); + + expect_d_eq(mallctl("arenas.create", (void *)&arena, &sz, NULL, 0), 0, + "Unexpected mallctl() failure"); + ptr = mallocx(42, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE); + expect_ptr_not_null(ptr, "Unexpected mallocx() failure"); + expect_d_eq(mallctl("arenas.lookup", &arena1, &sz, &ptr, sizeof(ptr)), + 0, "Unexpected mallctl() failure"); + expect_u_eq(arena, arena1, "Unexpected arena index"); + dallocx(ptr, 0); +} +TEST_END + +TEST_BEGIN(test_prof_active) { + /* + * If config_prof is off, then the test for prof_active in + * test_mallctl_opt was already enough. + */ + test_skip_if(!config_prof); + test_skip_if(opt_prof); + + bool active, old; + size_t len = sizeof(bool); + + active = true; + expect_d_eq(mallctl("prof.active", NULL, NULL, &active, len), ENOENT, + "Setting prof_active to true should fail when opt_prof is off"); + old = true; + expect_d_eq(mallctl("prof.active", &old, &len, &active, len), ENOENT, + "Setting prof_active to true should fail when opt_prof is off"); + expect_true(old, "old value should not be touched when mallctl fails"); + active = false; + expect_d_eq(mallctl("prof.active", NULL, NULL, &active, len), 0, + "Setting prof_active to false should succeed when opt_prof is off"); + expect_d_eq(mallctl("prof.active", &old, &len, &active, len), 0, + "Setting prof_active to false should succeed when opt_prof is off"); + expect_false(old, "prof_active should be false when opt_prof is off"); +} +TEST_END + +TEST_BEGIN(test_stats_arenas) { +#define TEST_STATS_ARENAS(t, name) do { \ + t name; \ + size_t sz = sizeof(t); \ + expect_d_eq(mallctl("stats.arenas.0."#name, (void *)&name, &sz, \ + NULL, 0), 0, "Unexpected mallctl() failure"); \ +} while (0) + + TEST_STATS_ARENAS(unsigned, nthreads); + TEST_STATS_ARENAS(const char *, dss); + TEST_STATS_ARENAS(ssize_t, dirty_decay_ms); + TEST_STATS_ARENAS(ssize_t, muzzy_decay_ms); + TEST_STATS_ARENAS(size_t, pactive); + TEST_STATS_ARENAS(size_t, pdirty); + +#undef TEST_STATS_ARENAS +} +TEST_END + +static void +alloc_hook(void *extra, UNUSED hook_alloc_t type, UNUSED void *result, + UNUSED uintptr_t result_raw, UNUSED uintptr_t args_raw[3]) { + *(bool *)extra = true; +} + +static void +dalloc_hook(void *extra, UNUSED hook_dalloc_t type, + UNUSED void *address, UNUSED uintptr_t args_raw[3]) { + *(bool *)extra = true; +} + +TEST_BEGIN(test_hooks) { + bool hook_called = false; + hooks_t hooks = {&alloc_hook, &dalloc_hook, NULL, &hook_called}; + void *handle = NULL; + size_t sz = sizeof(handle); + int err = mallctl("experimental.hooks.install", &handle, &sz, &hooks, + sizeof(hooks)); + expect_d_eq(err, 0, "Hook installation failed"); + expect_ptr_ne(handle, NULL, "Hook installation gave null handle"); + void *ptr = mallocx(1, 0); + expect_true(hook_called, "Alloc hook not called"); + hook_called = false; + free(ptr); + expect_true(hook_called, "Free hook not called"); + + err = mallctl("experimental.hooks.remove", NULL, NULL, &handle, + sizeof(handle)); + expect_d_eq(err, 0, "Hook removal failed"); + hook_called = false; + ptr = mallocx(1, 0); + free(ptr); + expect_false(hook_called, "Hook called after removal"); +} +TEST_END + +TEST_BEGIN(test_hooks_exhaustion) { + bool hook_called = false; + hooks_t hooks = {&alloc_hook, &dalloc_hook, NULL, &hook_called}; + + void *handle; + void *handles[HOOK_MAX]; + size_t sz = sizeof(handle); + int err; + for (int i = 0; i < HOOK_MAX; i++) { + handle = NULL; + err = mallctl("experimental.hooks.install", &handle, &sz, + &hooks, sizeof(hooks)); + expect_d_eq(err, 0, "Error installation hooks"); + expect_ptr_ne(handle, NULL, "Got NULL handle"); + handles[i] = handle; + } + err = mallctl("experimental.hooks.install", &handle, &sz, &hooks, + sizeof(hooks)); + expect_d_eq(err, EAGAIN, "Should have failed hook installation"); + for (int i = 0; i < HOOK_MAX; i++) { + err = mallctl("experimental.hooks.remove", NULL, NULL, + &handles[i], sizeof(handles[i])); + expect_d_eq(err, 0, "Hook removal failed"); + } + /* Insertion failed, but then we removed some; it should work now. */ + handle = NULL; + err = mallctl("experimental.hooks.install", &handle, &sz, &hooks, + sizeof(hooks)); + expect_d_eq(err, 0, "Hook insertion failed"); + expect_ptr_ne(handle, NULL, "Got NULL handle"); + err = mallctl("experimental.hooks.remove", NULL, NULL, &handle, + sizeof(handle)); + expect_d_eq(err, 0, "Hook removal failed"); +} +TEST_END + +TEST_BEGIN(test_thread_idle) { + /* + * We're cheating a little bit in this test, and inferring things about + * implementation internals (like tcache details). We have to; + * thread.idle has no guaranteed effects. We need stats to make these + * inferences. + */ + test_skip_if(!config_stats); + + int err; + size_t sz; + size_t miblen; + + bool tcache_enabled = false; + sz = sizeof(tcache_enabled); + err = mallctl("thread.tcache.enabled", &tcache_enabled, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + test_skip_if(!tcache_enabled); + + size_t tcache_max; + sz = sizeof(tcache_max); + err = mallctl("arenas.tcache_max", &tcache_max, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + test_skip_if(tcache_max == 0); + + unsigned arena_ind; + sz = sizeof(arena_ind); + err = mallctl("thread.arena", &arena_ind, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + + /* We're going to do an allocation of size 1, which we know is small. */ + size_t mib[5]; + miblen = sizeof(mib)/sizeof(mib[0]); + err = mallctlnametomib("stats.arenas.0.small.ndalloc", mib, &miblen); + expect_d_eq(err, 0, ""); + mib[2] = arena_ind; + + /* + * This alloc and dalloc should leave something in the tcache, in a + * small size's cache bin. + */ + void *ptr = mallocx(1, 0); + dallocx(ptr, 0); + + uint64_t epoch; + err = mallctl("epoch", NULL, NULL, &epoch, sizeof(epoch)); + expect_d_eq(err, 0, ""); + + uint64_t small_dalloc_pre_idle; + sz = sizeof(small_dalloc_pre_idle); + err = mallctlbymib(mib, miblen, &small_dalloc_pre_idle, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + + err = mallctl("thread.idle", NULL, NULL, NULL, 0); + expect_d_eq(err, 0, ""); + + err = mallctl("epoch", NULL, NULL, &epoch, sizeof(epoch)); + expect_d_eq(err, 0, ""); + + uint64_t small_dalloc_post_idle; + sz = sizeof(small_dalloc_post_idle); + err = mallctlbymib(mib, miblen, &small_dalloc_post_idle, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + + expect_u64_lt(small_dalloc_pre_idle, small_dalloc_post_idle, + "Purge didn't flush the tcache"); +} +TEST_END + +TEST_BEGIN(test_thread_peak) { + test_skip_if(!config_stats); + + /* + * We don't commit to any stable amount of accuracy for peak tracking + * (in practice, when this test was written, we made sure to be within + * 100k). But 10MB is big for more or less any definition of big. + */ + size_t big_size = 10 * 1024 * 1024; + size_t small_size = 256; + + void *ptr; + int err; + size_t sz; + uint64_t peak; + sz = sizeof(uint64_t); + + err = mallctl("thread.peak.reset", NULL, NULL, NULL, 0); + expect_d_eq(err, 0, ""); + ptr = mallocx(SC_SMALL_MAXCLASS, 0); + err = mallctl("thread.peak.read", &peak, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + expect_u64_eq(peak, SC_SMALL_MAXCLASS, "Missed an update"); + free(ptr); + err = mallctl("thread.peak.read", &peak, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + expect_u64_eq(peak, SC_SMALL_MAXCLASS, "Freeing changed peak"); + ptr = mallocx(big_size, 0); + free(ptr); + /* + * The peak should have hit big_size in the last two lines, even though + * the net allocated bytes has since dropped back down to zero. We + * should have noticed the peak change without having down any mallctl + * calls while net allocated bytes was high. + */ + err = mallctl("thread.peak.read", &peak, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + expect_u64_ge(peak, big_size, "Missed a peak change."); + + /* Allocate big_size, but using small allocations. */ + size_t nallocs = big_size / small_size; + void **ptrs = calloc(nallocs, sizeof(void *)); + err = mallctl("thread.peak.reset", NULL, NULL, NULL, 0); + expect_d_eq(err, 0, ""); + err = mallctl("thread.peak.read", &peak, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + expect_u64_eq(0, peak, "Missed a reset."); + for (size_t i = 0; i < nallocs; i++) { + ptrs[i] = mallocx(small_size, 0); + } + for (size_t i = 0; i < nallocs; i++) { + free(ptrs[i]); + } + err = mallctl("thread.peak.read", &peak, &sz, NULL, 0); + expect_d_eq(err, 0, ""); + /* + * We don't guarantee exactness; make sure we're within 10% of the peak, + * though. + */ + expect_u64_ge(peak, nallocx(small_size, 0) * nallocs * 9 / 10, + "Missed some peak changes."); + expect_u64_le(peak, nallocx(small_size, 0) * nallocs * 11 / 10, + "Overcounted peak changes."); + free(ptrs); +} +TEST_END + +typedef struct activity_test_data_s activity_test_data_t; +struct activity_test_data_s { + uint64_t obtained_alloc; + uint64_t obtained_dalloc; +}; + +static void +activity_test_callback(void *uctx, uint64_t alloc, uint64_t dalloc) { + activity_test_data_t *test_data = (activity_test_data_t *)uctx; + test_data->obtained_alloc = alloc; + test_data->obtained_dalloc = dalloc; +} + +TEST_BEGIN(test_thread_activity_callback) { + test_skip_if(!config_stats); + + const size_t big_size = 10 * 1024 * 1024; + void *ptr; + int err; + size_t sz; + + uint64_t *allocatedp; + uint64_t *deallocatedp; + sz = sizeof(allocatedp); + err = mallctl("thread.allocatedp", &allocatedp, &sz, NULL, 0); + assert_d_eq(0, err, ""); + err = mallctl("thread.deallocatedp", &deallocatedp, &sz, NULL, 0); + assert_d_eq(0, err, ""); + + activity_callback_thunk_t old_thunk = {(activity_callback_t)111, + (void *)222}; + + activity_test_data_t test_data = {333, 444}; + activity_callback_thunk_t new_thunk = + {&activity_test_callback, &test_data}; + + sz = sizeof(old_thunk); + err = mallctl("experimental.thread.activity_callback", &old_thunk, &sz, + &new_thunk, sizeof(new_thunk)); + assert_d_eq(0, err, ""); + + expect_true(old_thunk.callback == NULL, "Callback already installed"); + expect_true(old_thunk.uctx == NULL, "Callback data already installed"); + + ptr = mallocx(big_size, 0); + expect_u64_eq(test_data.obtained_alloc, *allocatedp, ""); + expect_u64_eq(test_data.obtained_dalloc, *deallocatedp, ""); + + free(ptr); + expect_u64_eq(test_data.obtained_alloc, *allocatedp, ""); + expect_u64_eq(test_data.obtained_dalloc, *deallocatedp, ""); + + sz = sizeof(old_thunk); + new_thunk = (activity_callback_thunk_t){ NULL, NULL }; + err = mallctl("experimental.thread.activity_callback", &old_thunk, &sz, + &new_thunk, sizeof(new_thunk)); + assert_d_eq(0, err, ""); + + expect_true(old_thunk.callback == &activity_test_callback, ""); + expect_true(old_thunk.uctx == &test_data, ""); + + /* Inserting NULL should have turned off tracking. */ + test_data.obtained_alloc = 333; + test_data.obtained_dalloc = 444; + ptr = mallocx(big_size, 0); + free(ptr); + expect_u64_eq(333, test_data.obtained_alloc, ""); + expect_u64_eq(444, test_data.obtained_dalloc, ""); +} +TEST_END + +int +main(void) { + return test( + test_mallctl_errors, + test_mallctlnametomib_errors, + test_mallctlbymib_errors, + test_mallctl_read_write, + test_mallctlnametomib_short_mib, + test_mallctlnametomib_short_name, + test_mallctlmibnametomib, + test_mallctlbymibname, + test_mallctl_config, + test_mallctl_opt, + test_manpage_example, + test_tcache_none, + test_tcache, + test_thread_arena, + test_arena_i_initialized, + test_arena_i_dirty_decay_ms, + test_arena_i_muzzy_decay_ms, + test_arena_i_purge, + test_arena_i_decay, + test_arena_i_dss, + test_arena_i_retain_grow_limit, + test_arenas_dirty_decay_ms, + test_arenas_muzzy_decay_ms, + test_arenas_constants, + test_arenas_bin_constants, + test_arenas_lextent_constants, + test_arenas_create, + test_arenas_lookup, + test_prof_active, + test_stats_arenas, + test_hooks, + test_hooks_exhaustion, + test_thread_idle, + test_thread_peak, + test_thread_activity_callback); +} |