diff options
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/misc/pthread/weaks.c | 87 |
1 files changed, 44 insertions, 43 deletions
diff --git a/libc/misc/pthread/weaks.c b/libc/misc/pthread/weaks.c index befa8a5c4..a07582aab 100644 --- a/libc/misc/pthread/weaks.c +++ b/libc/misc/pthread/weaks.c @@ -22,46 +22,47 @@ #include <limits.h> #include <stdlib.h> -static int __pthread_return_0 __P ((void)); -static int __pthread_return_1 __P ((void)); - -static int -__pthread_return_0 (void) -{ - return 0; -} - -static int -__pthread_return_1 (void) -{ - return 1; -} - /**********************************************************************/ /* Weaks for application/library use. * + * We need to define weaks here to cover all the pthread functions that + * libc itself will use so that we aren't forced to link libc.so to + * libpthread.so. When an application doesn't use pthreads support, + * the locking functions used by libc itself basically become no-ops. + * However, if the application uses pthreads, then it will pull in + * libpthread.so whose symbols will override these weaks magically + * turning the internal libc mutex calls from no-ops to real locking + * calls. + */ + +/* glibc itself defines all these, but we don't need them in uClibc + * * Verified by comparing to glibc's linuxthreads/forward.c and defined * only those that are in the glibc abi. * The commented aliases are ones that were previously defined in uClibc * and which I left in for documentation. */ +static int __pthread_return_0 __P ((void)); +static int __pthread_return_0 (void) { return 0; } + +/* weak_alias (__pthread_return_0, pthread_attr_destroy) weak_alias (__pthread_return_0, pthread_attr_getdetachstate) weak_alias (__pthread_return_0, pthread_attr_getinheritsched) weak_alias (__pthread_return_0, pthread_attr_getschedparam) weak_alias (__pthread_return_0, pthread_attr_getschedpolicy) weak_alias (__pthread_return_0, pthread_attr_getscope) -/* weak_alias (__pthread_return_0, pthread_attr_getstackaddr) */ -/* weak_alias (__pthread_return_0, pthread_attr_getstacksize) */ +weak_alias (__pthread_return_0, pthread_attr_getstackaddr) +weak_alias (__pthread_return_0, pthread_attr_getstacksize) weak_alias (__pthread_return_0, pthread_attr_init) weak_alias (__pthread_return_0, pthread_attr_setdetachstate) weak_alias (__pthread_return_0, pthread_attr_setinheritsched) weak_alias (__pthread_return_0, pthread_attr_setschedparam) weak_alias (__pthread_return_0, pthread_attr_setschedpolicy) weak_alias (__pthread_return_0, pthread_attr_setscope) -/* weak_alias (__pthread_return_0, pthread_attr_setstackaddr) */ -/* weak_alias (__pthread_return_0, pthread_attr_setstacksize) */ +weak_alias (__pthread_return_0, pthread_attr_setstackaddr) +weak_alias (__pthread_return_0, pthread_attr_setstacksize) weak_alias (__pthread_return_0, pthread_cond_broadcast) weak_alias (__pthread_return_0, pthread_cond_destroy) weak_alias (__pthread_return_0, pthread_cond_init) @@ -71,44 +72,44 @@ weak_alias (__pthread_return_0, pthread_cond_wait) weak_alias (__pthread_return_0, pthread_condattr_destroy) weak_alias (__pthread_return_0, pthread_condattr_init) weak_alias (__pthread_return_0, pthread_getschedparam) -/* weak_alias (__pthread_return_0, pthread_getcancelstate) */ -/* weak_alias (__pthread_return_0, pthread_getconcurrency) */ -/* weak_alias (__pthread_return_0, pthread_getschedparam) */ +weak_alias (__pthread_return_0, pthread_getcancelstate) +weak_alias (__pthread_return_0, pthread_getconcurrency) weak_alias (__pthread_return_0, pthread_mutex_destroy) weak_alias (__pthread_return_0, pthread_mutex_init) weak_alias (__pthread_return_0, pthread_mutex_lock) -/* weak_alias (__pthread_return_0, pthread_mutex_trylock) */ +weak_alias (__pthread_return_0, pthread_mutex_trylock) weak_alias (__pthread_return_0, pthread_mutex_unlock) -/* weak_alias (__pthread_return_0, pthread_mutexattr_destroy) */ -/* weak_alias (__pthread_return_0, pthread_mutexattr_gettype) */ -/* weak_alias (__pthread_return_0, pthread_mutexattr_init) */ -/* weak_alias (__pthread_return_0, pthread_mutexattr_settype) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_destroy) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_init) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_rdlock) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_tryrdlock) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_trywrlock) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_unlock) */ -/* weak_alias (__pthread_return_0, pthread_rwlock_wrlock) */ -/* weak_alias (__pthread_return_0, pthread_rwlockattr_destroy) */ -/* weak_alias (__pthread_return_0, pthread_rwlockattr_getpshared) */ -/* weak_alias (__pthread_return_0, pthread_rwlockattr_init) */ -/* weak_alias (__pthread_return_0, pthread_rwlockattr_setpshared) */ +weak_alias (__pthread_return_0, pthread_mutexattr_destroy) +weak_alias (__pthread_return_0, pthread_mutexattr_gettype) +weak_alias (__pthread_return_0, pthread_mutexattr_init) +weak_alias (__pthread_return_0, pthread_mutexattr_settype) +weak_alias (__pthread_return_0, pthread_rwlock_destroy) +weak_alias (__pthread_return_0, pthread_rwlock_init) +weak_alias (__pthread_return_0, pthread_rwlock_rdlock) +weak_alias (__pthread_return_0, pthread_rwlock_tryrdlock) +weak_alias (__pthread_return_0, pthread_rwlock_trywrlock) +weak_alias (__pthread_return_0, pthread_rwlock_unlock) +weak_alias (__pthread_return_0, pthread_rwlock_wrlock) +weak_alias (__pthread_return_0, pthread_rwlockattr_destroy) +weak_alias (__pthread_return_0, pthread_rwlockattr_getpshared) +weak_alias (__pthread_return_0, pthread_rwlockattr_init) +weak_alias (__pthread_return_0, pthread_rwlockattr_setpshared) weak_alias (__pthread_return_0, pthread_self) weak_alias (__pthread_return_0, pthread_setcancelstate) weak_alias (__pthread_return_0, pthread_setcanceltype) -/* weak_alias (__pthread_return_0, pthread_setconcurrency) */ +weak_alias (__pthread_return_0, pthread_setconcurrency) weak_alias (__pthread_return_0, pthread_setschedparam) -/* Those are pthread functions which return 1 if successful. */ +static int __pthread_return_1 __P ((void)); +static int __pthread_return_1 (void) { return 1; } + weak_alias (__pthread_return_1, pthread_equal) -/* pthread_exit () is a special case. */ -void weak_function -pthread_exit (void *retval) +void weak_function pthread_exit (void *retval) { exit (EXIT_SUCCESS); } +*/ /**********************************************************************/ /* Weaks used internally by the C library. */ |