#include "test/jemalloc_test.h"

#include "test/extent_hooks.h"

#include "jemalloc/internal/arena_types.h"

static void
test_extent_body(unsigned arena_ind) {
       void *p;
       size_t large0, large1, large2, sz;
       size_t purge_mib[3];
       size_t purge_miblen;
       int flags;
       bool xallocx_success_a, xallocx_success_b, xallocx_success_c;

       flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;

       /* Get large size classes. */
       sz = sizeof(size_t);
       expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large0, &sz, NULL,
           0), 0, "Unexpected arenas.lextent.0.size failure");
       expect_d_eq(mallctl("arenas.lextent.1.size", (void *)&large1, &sz, NULL,
           0), 0, "Unexpected arenas.lextent.1.size failure");
       expect_d_eq(mallctl("arenas.lextent.2.size", (void *)&large2, &sz, NULL,
           0), 0, "Unexpected arenas.lextent.2.size failure");

       /* Test dalloc/decommit/purge cascade. */
       purge_miblen = sizeof(purge_mib)/sizeof(size_t);
       expect_d_eq(mallctlnametomib("arena.0.purge", purge_mib, &purge_miblen),
           0, "Unexpected mallctlnametomib() failure");
       purge_mib[1] = (size_t)arena_ind;
       called_alloc = false;
       try_alloc = true;
       try_dalloc = false;
       try_decommit = false;
       p = mallocx(large0 * 2, flags);
       expect_ptr_not_null(p, "Unexpected mallocx() error");
       expect_true(called_alloc, "Expected alloc call");
       called_dalloc = false;
       called_decommit = false;
       did_purge_lazy = false;
       did_purge_forced = false;
       called_split = false;
       xallocx_success_a = (xallocx(p, large0, 0, flags) == large0);
       expect_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
           0, "Unexpected arena.%u.purge error", arena_ind);
       if (xallocx_success_a) {
               expect_true(called_dalloc, "Expected dalloc call");
               expect_true(called_decommit, "Expected decommit call");
               expect_true(did_purge_lazy || did_purge_forced,
                   "Expected purge");
               expect_true(called_split, "Expected split call");
       }
       dallocx(p, flags);
       try_dalloc = true;

       /* Test decommit/commit and observe split/merge. */
       try_dalloc = false;
       try_decommit = true;
       p = mallocx(large0 * 2, flags);
       expect_ptr_not_null(p, "Unexpected mallocx() error");
       did_decommit = false;
       did_commit = false;
       called_split = false;
       did_split = false;
       did_merge = false;
       xallocx_success_b = (xallocx(p, large0, 0, flags) == large0);
       expect_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
           0, "Unexpected arena.%u.purge error", arena_ind);
       if (xallocx_success_b) {
               expect_true(did_split, "Expected split");
       }
       xallocx_success_c = (xallocx(p, large0 * 2, 0, flags) == large0 * 2);
       if (did_split) {
               expect_b_eq(did_decommit, did_commit,
                   "Expected decommit/commit match");
       }
       if (xallocx_success_b && xallocx_success_c) {
               expect_true(did_merge, "Expected merge");
       }
       dallocx(p, flags);
       try_dalloc = true;
       try_decommit = false;

       /* Make sure non-large allocation succeeds. */
       p = mallocx(42, flags);
       expect_ptr_not_null(p, "Unexpected mallocx() error");
       dallocx(p, flags);
}

static void
test_manual_hook_auto_arena(void) {
       unsigned narenas;
       size_t old_size, new_size, sz;
       size_t hooks_mib[3];
       size_t hooks_miblen;
       extent_hooks_t *new_hooks, *old_hooks;

       extent_hooks_prep();

       sz = sizeof(unsigned);
       /* Get number of auto arenas. */
       expect_d_eq(mallctl("opt.narenas", (void *)&narenas, &sz, NULL, 0),
           0, "Unexpected mallctl() failure");
       if (narenas == 1) {
               return;
       }

       /* Install custom extent hooks on arena 1 (might not be initialized). */
       hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
       expect_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
           &hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
       hooks_mib[1] = 1;
       old_size = sizeof(extent_hooks_t *);
       new_hooks = &hooks;
       new_size = sizeof(extent_hooks_t *);
       expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
           &old_size, (void *)&new_hooks, new_size), 0,
           "Unexpected extent_hooks error");
       static bool auto_arena_created = false;
       if (old_hooks != &hooks) {
               expect_b_eq(auto_arena_created, false,
                   "Expected auto arena 1 created only once.");
               auto_arena_created = true;
       }
}

static void
test_manual_hook_body(void) {
       unsigned arena_ind;
       size_t old_size, new_size, sz;
       size_t hooks_mib[3];
       size_t hooks_miblen;
       extent_hooks_t *new_hooks, *old_hooks;

       extent_hooks_prep();

       sz = sizeof(unsigned);
       expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
           0, "Unexpected mallctl() failure");

       /* Install custom extent hooks. */
       hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
       expect_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
           &hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
       hooks_mib[1] = (size_t)arena_ind;
       old_size = sizeof(extent_hooks_t *);
       new_hooks = &hooks;
       new_size = sizeof(extent_hooks_t *);
       expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
           &old_size, (void *)&new_hooks, new_size), 0,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->alloc, extent_alloc_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->dalloc, extent_dalloc_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->commit, extent_commit_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->decommit, extent_decommit_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->purge_lazy, extent_purge_lazy_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->purge_forced, extent_purge_forced_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->split, extent_split_hook,
           "Unexpected extent_hooks error");
       expect_ptr_ne(old_hooks->merge, extent_merge_hook,
           "Unexpected extent_hooks error");

       if (!is_background_thread_enabled()) {
               test_extent_body(arena_ind);
       }

       /* Restore extent hooks. */
       expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, NULL, NULL,
           (void *)&old_hooks, new_size), 0, "Unexpected extent_hooks error");
       expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
           &old_size, NULL, 0), 0, "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks, default_hooks, "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->alloc, default_hooks->alloc,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->dalloc, default_hooks->dalloc,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->commit, default_hooks->commit,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->decommit, default_hooks->decommit,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->purge_lazy, default_hooks->purge_lazy,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->purge_forced, default_hooks->purge_forced,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->split, default_hooks->split,
           "Unexpected extent_hooks error");
       expect_ptr_eq(old_hooks->merge, default_hooks->merge,
           "Unexpected extent_hooks error");
}

TEST_BEGIN(test_extent_manual_hook) {
       test_manual_hook_auto_arena();
       test_manual_hook_body();

       /* Test failure paths. */
       try_split = false;
       test_manual_hook_body();
       try_merge = false;
       test_manual_hook_body();
       try_purge_lazy = false;
       try_purge_forced = false;
       test_manual_hook_body();

       try_split = try_merge = try_purge_lazy = try_purge_forced = true;
}
TEST_END

TEST_BEGIN(test_extent_auto_hook) {
       unsigned arena_ind;
       size_t new_size, sz;
       extent_hooks_t *new_hooks;

       extent_hooks_prep();

       sz = sizeof(unsigned);
       new_hooks = &hooks;
       new_size = sizeof(extent_hooks_t *);
       expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz,
           (void *)&new_hooks, new_size), 0, "Unexpected mallctl() failure");

       test_skip_if(is_background_thread_enabled());
       test_extent_body(arena_ind);
}
TEST_END

static void
test_arenas_create_ext_base(arena_config_t config,
       bool expect_hook_data, bool expect_hook_metadata)
{
       unsigned arena, arena1;
       void *ptr;
       size_t sz = sizeof(unsigned);

       extent_hooks_prep();

       called_alloc = false;
       expect_d_eq(mallctl("experimental.arenas_create_ext",
           (void *)&arena, &sz, &config, sizeof(arena_config_t)), 0,
           "Unexpected mallctl() failure");
       expect_b_eq(called_alloc, expect_hook_metadata,
           "expected hook metadata alloc mismatch");

       called_alloc = false;
       ptr = mallocx(42, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE);
       expect_b_eq(called_alloc, expect_hook_data,
           "expected hook data alloc mismatch");

       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_BEGIN(test_arenas_create_ext_with_ehooks_no_metadata) {
       arena_config_t config;
       config.extent_hooks = &hooks;
       config.metadata_use_hooks = false;

       test_arenas_create_ext_base(config, true, false);
}
TEST_END

TEST_BEGIN(test_arenas_create_ext_with_ehooks_with_metadata) {
       arena_config_t config;
       config.extent_hooks = &hooks;
       config.metadata_use_hooks = true;

       test_arenas_create_ext_base(config, true, true);
}
TEST_END

int
main(void) {
       return test(
           test_extent_manual_hook,
           test_extent_auto_hook,
           test_arenas_create_ext_with_ehooks_no_metadata,
           test_arenas_create_ext_with_ehooks_with_metadata);
}

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