*** UNIX MANUAL PAGE BROWSER ***

pthread_mutexattr_init(3) Library Functions Manual pthread_mutexattr_init(3) NAME pthread_mutexattr_init - Initializes a mutex attributes object. LIBRARY DECthreads POSIX 1003.1c Library (libpthread.so) SYNOPSIS #include <pthread.h> int pthread_mutexattr_init( pthread_mutexattr_t *attr); STANDARDS Interfaces documented on this reference page conform to industry stan- dards as follows: IEEE Std 1003.1c-1995, POSIX System Application Program Interface PARAMETERS Address of the mutex attributes object to be initialized. DESCRIPTION This routine initializes the mutex attributes object specified by the attr argument with a set of default values. A mutex attributes object is used to specify the attributes of one or more mutexes when they are created. The attributes object created by this routine is used only in calls to the pthread_mutex_init(3) routine. When a mutex attributes object is used to create a mutex, the values of the individual attributes determine the characteristics of the new mu- tex. Thus, attributes objects act as additional arguments to mutex creation. Changing individual attributes in an attributes object does not affect any mutexes that were previously created using that attrib- utes object. You can use the same mutex attributes object in successive calls to pthread_mutex_init(3), from any thread. If multiple threads can change attributes in a shared mutex attributes object, your program must use a mutex to protect the integrity of the attributes object's contents. Results are undefined if this routine is called and the attr argument specifies a mutex attributes object that is already initialized. RETURN VALUES If an error condition occurs, this routine returns an integer value in- dicating the type of error. Possible return values are as follows: Successful completion. Insufficient memory to create the mutex attrib- utes object. ERRORS None RELATED INFORMATION Functions: pthread_mutexattr_destroy(3), pthread_mutexattr_gettype(3), pthread_mutexattr_settype(3), pthread_mutex_init(3) Manuals: Guide to DECthreads and Programmer's Guide delim off pthread_mutexattr_init(3)