mirror of
https://github.com/shadowsocks/shadowsocks-libev.git
synced 2026-10-21 14:33:55 +00:00
Max Lv
a6113cec4b
The session table and the relay contexts each hold a reference; evicting a session from the full table no longer frees memory a relay still uses. Ported from the parked fix/aead2022-udp-session-eviction work.
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
#include <assert.h>
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#include <stdlib.h>
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#include "ss_ref.h"
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typedef struct {
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ss_ref_t ref;
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int *destroyed;
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} test_object_t;
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static void
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destroy_object(void *object)
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{
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test_object_t *value = object;
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++*value->destroyed;
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free(value);
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}
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static void *
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new_object(int *destroyed)
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{
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test_object_t *value = malloc(sizeof(*value));
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assert(value != NULL);
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ss_ref_init(value, destroy_object);
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value->destroyed = destroyed;
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return value;
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}
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int
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main(void)
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{
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int destroyed = 0;
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void *table = new_object(&destroyed);
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void *relay = NULL;
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ss_ref_assign(&relay, table);
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ss_ref_assign(&relay, relay); /* Self-assignment must preserve ownership. */
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ss_ptr_reset(&table, ss_ref_release); /* Simulate eviction. */
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assert(table == NULL && destroyed == 0);
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ss_ptr_reset(&relay, ss_ref_release);
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assert(relay == NULL && destroyed == 1);
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ss_ptr_reset(&relay, ss_ref_release); /* Repeated cleanup is harmless. */
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assert(destroyed == 1);
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void *query = new_object(&destroyed);
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relay = new_object(&destroyed);
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ss_ptr_move(&relay, &query, ss_ref_release);
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assert(query == NULL && relay != NULL && destroyed == 2);
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ss_ptr_move(&relay, &relay, ss_ref_release); /* Self-move. */
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assert(relay != NULL && destroyed == 2);
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ss_ref_assign(&query, relay);
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ss_ptr_move(&relay, &query, ss_ref_release); /* Two owners, same object. */
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assert(query == NULL && relay != NULL && destroyed == 2);
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ss_ref_assign(&relay, NULL);
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assert(relay == NULL && destroyed == 3);
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relay = new_object(&destroyed);
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ss_ptr_move(&relay, &query, ss_ref_release); /* Move an empty source. */
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assert(relay == NULL && query == NULL && destroyed == 4);
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assert(ss_ref_retain(NULL) == NULL);
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ss_ref_release(NULL);
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ss_ptr_reset(&relay, NULL); /* Legacy crypto has no session/callback. */
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return 0;
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}
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