e3db480f6f
The keyword huge tend to remind people of huge pages which is not relevent to the feature.
109 lines
3.6 KiB
C
109 lines
3.6 KiB
C
#include "test/jemalloc_test.h"
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/* Threshold: 2 << 20 = 2097152. */
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const char *malloc_conf = "oversize_threshold:2097152";
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#define HUGE_SZ (2 << 20)
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#define SMALL_SZ (8)
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TEST_BEGIN(huge_bind_thread) {
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unsigned arena1, arena2;
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size_t sz = sizeof(unsigned);
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/* Bind to a manual arena. */
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assert_d_eq(mallctl("arenas.create", &arena1, &sz, NULL, 0), 0,
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"Failed to create arena");
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assert_d_eq(mallctl("thread.arena", NULL, NULL, &arena1,
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sizeof(arena1)), 0, "Fail to bind thread");
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void *ptr = mallocx(HUGE_SZ, 0);
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assert_ptr_not_null(ptr, "Fail to allocate huge size");
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
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sizeof(ptr)), 0, "Unexpected mallctl() failure");
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assert_u_eq(arena1, arena2, "Wrong arena used after binding");
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dallocx(ptr, 0);
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/* Switch back to arena 0. */
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test_skip_if(have_percpu_arena &&
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PERCPU_ARENA_ENABLED(opt_percpu_arena));
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arena2 = 0;
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assert_d_eq(mallctl("thread.arena", NULL, NULL, &arena2,
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sizeof(arena2)), 0, "Fail to bind thread");
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ptr = mallocx(SMALL_SZ, MALLOCX_TCACHE_NONE);
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
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sizeof(ptr)), 0, "Unexpected mallctl() failure");
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assert_u_eq(arena2, 0, "Wrong arena used after binding");
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dallocx(ptr, MALLOCX_TCACHE_NONE);
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/* Then huge allocation should use the huge arena. */
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ptr = mallocx(HUGE_SZ, 0);
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assert_ptr_not_null(ptr, "Fail to allocate huge size");
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
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sizeof(ptr)), 0, "Unexpected mallctl() failure");
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assert_u_ne(arena2, 0, "Wrong arena used after binding");
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assert_u_ne(arena1, arena2, "Wrong arena used after binding");
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dallocx(ptr, 0);
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}
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TEST_END
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TEST_BEGIN(huge_mallocx) {
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unsigned arena1, arena2;
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size_t sz = sizeof(unsigned);
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assert_d_eq(mallctl("arenas.create", &arena1, &sz, NULL, 0), 0,
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"Failed to create arena");
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void *huge = mallocx(HUGE_SZ, MALLOCX_ARENA(arena1));
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assert_ptr_not_null(huge, "Fail to allocate huge size");
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &huge,
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sizeof(huge)), 0, "Unexpected mallctl() failure");
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assert_u_eq(arena1, arena2, "Wrong arena used for mallocx");
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dallocx(huge, MALLOCX_ARENA(arena1));
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void *huge2 = mallocx(HUGE_SZ, 0);
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assert_ptr_not_null(huge, "Fail to allocate huge size");
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &huge2,
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sizeof(huge2)), 0, "Unexpected mallctl() failure");
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assert_u_ne(arena1, arena2,
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"Huge allocation should not come from the manual arena.");
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assert_u_ne(arena2, 0,
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"Huge allocation should not come from the arena 0.");
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dallocx(huge2, 0);
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}
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TEST_END
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TEST_BEGIN(huge_allocation) {
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unsigned arena1, arena2;
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void *ptr = mallocx(HUGE_SZ, 0);
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assert_ptr_not_null(ptr, "Fail to allocate huge size");
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size_t sz = sizeof(unsigned);
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assert_d_eq(mallctl("arenas.lookup", &arena1, &sz, &ptr, sizeof(ptr)),
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0, "Unexpected mallctl() failure");
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assert_u_gt(arena1, 0, "Huge allocation should not come from arena 0");
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dallocx(ptr, 0);
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ptr = mallocx(HUGE_SZ >> 1, 0);
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assert_ptr_not_null(ptr, "Fail to allocate half huge size");
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
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sizeof(ptr)), 0, "Unexpected mallctl() failure");
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assert_u_ne(arena1, arena2, "Wrong arena used for half huge");
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dallocx(ptr, 0);
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ptr = mallocx(SMALL_SZ, MALLOCX_TCACHE_NONE);
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assert_ptr_not_null(ptr, "Fail to allocate small size");
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assert_d_eq(mallctl("arenas.lookup", &arena2, &sz, &ptr,
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sizeof(ptr)), 0, "Unexpected mallctl() failure");
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assert_u_ne(arena1, arena2,
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"Huge and small should be from different arenas");
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dallocx(ptr, 0);
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}
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TEST_END
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int
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main(void) {
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return test(
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huge_allocation,
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huge_mallocx,
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huge_bind_thread);
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}
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