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| author | Ulrich Drepper <drepper@redhat.com> | 2000-07-12 20:06:44 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-07-12 20:06:44 +0000 |
| commit | 9f835f5fb48eb6e173a7ca3c678595dba28c5e7a (patch) | |
| tree | 34f261d68fe97fc358f706dc8883ecfdfd450caf /linuxthreads/spinlock.h | |
| parent | 50a6564365575ba9d20a6cfde261ec5fcbb9ff35 (diff) | |
| download | glibc-9f835f5fb48eb6e173a7ca3c678595dba28c5e7a.tar.gz glibc-9f835f5fb48eb6e173a7ca3c678595dba28c5e7a.tar.xz glibc-9f835f5fb48eb6e173a7ca3c678595dba28c5e7a.zip | |
Update.
2000-07-12 Bruno Haible <haible@clisp.cons.org> * iconv/gconv_open.c (__gconv_open): Merge duplicated code. 2000-07-12 Bruno Haible <haible@clisp.cons.org> * iconv/gconv_builtin.c (__gconv_get_builtin_trans): Initialize __modname. 2000-07-12 Bruno Haible <haible@clisp.cons.org> * iconv/gconv_open.c (__gconv_open): Initialize result->__steps[cnt].__data. 2000-07-12 Mark Kettenis <kettenis@gnu.org> * nss/getent.c (services_keys): Pass port number in network byte order in call to getservbyport. 2000-07-11 Andreas Jaeger <aj@suse.de> * stdlib/Makefile (test-canon-ARGS): Fix for building in the source dir. * intl/Makefile (do-gettext-test): Likewise. * dirent/Makefile (opendir-tst1-ARGS): Likewise. 2000-07-11 Andreas Schwab <schwab@suse.de> * Makeconfig (run-program-prefix): New rule. (built-program-cmd): Use run-program-prefix.
Diffstat (limited to 'linuxthreads/spinlock.h')
| -rw-r--r-- | linuxthreads/spinlock.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/linuxthreads/spinlock.h b/linuxthreads/spinlock.h index 6609ef71c9..435271d812 100644 --- a/linuxthreads/spinlock.h +++ b/linuxthreads/spinlock.h @@ -105,7 +105,7 @@ static inline int __pthread_trylock (struct _pthread_fastlock * lock) #if defined TEST_FOR_COMPARE_AND_SWAP if (!__pthread_has_cas) #endif -#if !defined HAS_COMPARE_AND_SWAP +#if !defined HAS_COMPARE_AND_SWAP || defined TEST_FOR_COMPARE_AND_SWAP { return (testandset(&lock->__spinlock) ? EBUSY : 0); } @@ -140,13 +140,26 @@ static inline void __pthread_alt_init_lock(struct _pthread_fastlock * lock) static inline int __pthread_alt_trylock (struct _pthread_fastlock * lock) { +#if defined HAS_COMPARE_AND_SWAP long oldstatus; +#endif + +#if defined TEST_FOR_COMPARE_AND_SWAP + if (!__pthread_has_cas) +#endif +#if !defined HAS_COMPARE_AND_SWAP || defined TEST_FOR_COMPARE_AND_SWAP + { + return (testandset(&lock->__spinlock) ? EBUSY : 0); + } +#endif +#if defined HAS_COMPARE_AND_SWAP do { oldstatus = lock->__status; if (oldstatus != 0) return EBUSY; } while(! compare_and_swap(&lock->__status, 0, 1, &lock->__spinlock)); return 0; +#endif } /* Initializers for both lock variants */ |