The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/nsprpub/pr/tests/rwlockrank.c	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,120 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +/*
     1.9 + * RWLock rank tests
    1.10 + */
    1.11 +
    1.12 +#include "nspr.h"
    1.13 +#include "plgetopt.h"
    1.14 +
    1.15 +static int _debug_on;
    1.16 +static PRRWLock *rwlock0;
    1.17 +static PRRWLock *rwlock1;
    1.18 +static PRRWLock *rwlock2;
    1.19 +
    1.20 +static void rwtest(void *args)
    1.21 +{
    1.22 +    PR_RWLock_Rlock(rwlock1);
    1.23 +    PR_RWLock_Unlock(rwlock1);
    1.24 +
    1.25 +    PR_RWLock_Rlock(rwlock1);
    1.26 +    PR_RWLock_Unlock(rwlock1);
    1.27 +
    1.28 +    // Test correct lock rank.
    1.29 +    PR_RWLock_Rlock(rwlock1);
    1.30 +    PR_RWLock_Rlock(rwlock2);
    1.31 +    PR_RWLock_Unlock(rwlock2);
    1.32 +    PR_RWLock_Unlock(rwlock1);
    1.33 +
    1.34 +    PR_RWLock_Rlock(rwlock1);
    1.35 +    PR_RWLock_Rlock(rwlock2);
    1.36 +    PR_RWLock_Unlock(rwlock1);
    1.37 +    PR_RWLock_Unlock(rwlock2);
    1.38 +
    1.39 +    PR_RWLock_Rlock(rwlock1);
    1.40 +    PR_RWLock_Rlock(rwlock0);
    1.41 +    PR_RWLock_Rlock(rwlock2);
    1.42 +    PR_RWLock_Unlock(rwlock2);
    1.43 +    PR_RWLock_Unlock(rwlock0);
    1.44 +    PR_RWLock_Unlock(rwlock1);
    1.45 +
    1.46 +#if 0
    1.47 +    // Test incorrect lock rank.
    1.48 +    PR_RWLock_Rlock(rwlock2);
    1.49 +    PR_RWLock_Rlock(rwlock1);
    1.50 +    PR_RWLock_Unlock(rwlock1);
    1.51 +    PR_RWLock_Unlock(rwlock2);
    1.52 +
    1.53 +    PR_RWLock_Rlock(rwlock2);
    1.54 +    PR_RWLock_Rlock(rwlock0);
    1.55 +    PR_RWLock_Rlock(rwlock1);
    1.56 +    PR_RWLock_Unlock(rwlock1);
    1.57 +    PR_RWLock_Unlock(rwlock0);
    1.58 +    PR_RWLock_Unlock(rwlock2);
    1.59 +#endif
    1.60 +}
    1.61 +
    1.62 +int main(int argc, char **argv)
    1.63 +{
    1.64 +    PRStatus rc;
    1.65 +    PRThread *thread;
    1.66 +    PLOptStatus os;
    1.67 +    PLOptState *opt = PL_CreateOptState(argc, argv, "d");
    1.68 +
    1.69 +    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
    1.70 +        if (PL_OPT_BAD == os) continue;
    1.71 +        switch (opt->option) {
    1.72 +        case 'd':  /* debug mode */
    1.73 +            _debug_on = 1;
    1.74 +            break;
    1.75 +         default:
    1.76 +            break;
    1.77 +        }
    1.78 +    }
    1.79 +    PL_DestroyOptState(opt);
    1.80 +
    1.81 +    rwlock0 = PR_NewRWLock(PR_RWLOCK_RANK_NONE, "Lock 0");
    1.82 +    if (rwlock0 == NULL) {
    1.83 +        fprintf(stderr, "PR_NewRWLock failed - error %d\n",
    1.84 +                (int)PR_GetError());
    1.85 +        return 1;
    1.86 +    }
    1.87 +    rwlock1 = PR_NewRWLock(1, "Lock 1");
    1.88 +    if (rwlock1 == NULL) {
    1.89 +        fprintf(stderr, "PR_NewRWLock failed - error %d\n",
    1.90 +                (int)PR_GetError());
    1.91 +        return 1;
    1.92 +    }
    1.93 +    rwlock2 = PR_NewRWLock(2, "Lock 2");
    1.94 +    if (rwlock2 == NULL) {
    1.95 +        fprintf(stderr, "PR_NewRWLock failed - error %d\n",
    1.96 +                (int)PR_GetError());
    1.97 +        return 1;
    1.98 +    }
    1.99 +
   1.100 +    thread = PR_CreateThread(PR_USER_THREAD, rwtest, NULL, PR_PRIORITY_NORMAL,
   1.101 +                             PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
   1.102 +    if (thread == NULL) {
   1.103 +        fprintf(stderr, "PR_CreateThread failed - error %d\n",
   1.104 +                (int)PR_GetError());
   1.105 +        PR_ProcessExit(2);
   1.106 +    }
   1.107 +    if (_debug_on) {
   1.108 +        printf("%s: created thread = %p\n", argv[0], thread);
   1.109 +    }
   1.110 +
   1.111 +    rc = PR_JoinThread(thread);
   1.112 +    PR_ASSERT(rc == PR_SUCCESS);
   1.113 +
   1.114 +    PR_DestroyRWLock(rwlock0);
   1.115 +    rwlock0 = NULL;
   1.116 +    PR_DestroyRWLock(rwlock1);
   1.117 +    rwlock1 = NULL;
   1.118 +    PR_DestroyRWLock(rwlock2);
   1.119 +    rwlock2 = NULL;
   1.120 +
   1.121 +    printf("PASS\n");
   1.122 +    return 0;
   1.123 +}