diff options
Diffstat (limited to 'linuxthreads/pthread.c')
| -rw-r--r-- | linuxthreads/pthread.c | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c index 994233ebc7..729222e589 100644 --- a/linuxthreads/pthread.c +++ b/linuxthreads/pthread.c @@ -234,8 +234,8 @@ static int pthread_initialize_manager(void) /* Thread creation */ -int pthread_create(pthread_t *thread, const pthread_attr_t *attr, - void * (*start_routine)(void *), void *arg) +int __pthread_create_2_1(pthread_t *thread, const pthread_attr_t *attr, + void * (*start_routine)(void *), void *arg) { pthread_descr self = thread_self(); struct pthread_request request; @@ -255,6 +255,35 @@ int pthread_create(pthread_t *thread, const pthread_attr_t *attr, return self->p_retcode; } +#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING +default_symbol_version (__pthread_create_2_1, pthread_create, GLIBC_2.1); + +int __pthread_create_2_0(pthread_t *thread, const pthread_attr_t *attr, + void * (*start_routine)(void *), void *arg) +{ + /* The ATTR attribute is not really of type `pthread_attr_t *'. It has + the old size and access to the new members might crash the program. + We convert the struct now. */ + pthread_attr_t new_attr; + + if (attr != NULL) + { + size_t ps = __getpagesize (); + + memcpy (&new_attr, attr, (size_t) &(((pthread_attr_t*)NULL)->guardsize)); + new_attr.guardsize = ps; + new_attr.stackaddr_set = 0; + new_attr.stackaddr = NULL; + new_attr.stacksize = STACK_SIZE - ps; + attr = &new_attr; + } + return __pthread_create_2_1 (thread, attr, start_routine, arg); +} +symbol_version (__pthread_create_2_0, pthread_create, GLIBC_2.0); +#else +strong_alias (__pthread_create_2_1, pthread_create) +#endif + /* Simple operations on thread identifiers */ pthread_t pthread_self(void) @@ -417,6 +446,23 @@ void __pthread_kill_other_threads_np(void) } weak_alias (__pthread_kill_other_threads_np, pthread_kill_other_threads_np) +/* Concurrency symbol level. */ +static int current_level; + +int __pthread_setconcurrency(int level) +{ + /* We don't do anything unless we have found a useful interpretation. */ + current_level = level; + return 0; +} +weak_alias (__pthread_setconcurrency, pthread_setconcurrency) + +int __pthread_getconcurrency(void) +{ + return current_level; +} +weak_alias (__pthread_getconcurrency, pthread_getconcurrency) + /* Debugging aid */ #ifdef DEBUG |