PTHREAD_GETNAME_NP(3) | Library Functions Manual | PTHREAD_GETNAME_NP(3)

# NAME

`pthread_getname_np`, `pthread_setname_np` —
get and set descriptive name of a thread

# LIBRARY

POSIX Threads Library (libpthread, -lpthread)

# SYNOPSIS

`#include <pthread.h>`

int
`pthread_getname_np`(pthread_t thread, char *name, size_t len);

int
`pthread_setname_np`(pthread_t thread, const char *name, void *arg);

# DESCRIPTION

The `pthread_getname_np`() function obtains the descriptive name of a thread. It takes the following arguments:

thread
  The thread whose descriptive name will be obtained.
name
  The buffer to be filled with the descriptive name of the thread.
len
  The size of the buffer name in bytes.

The `pthread_setname_np`() function sets the descriptive name of a thread. It takes the following arguments:

thread
  The thread whose descriptive name will be set.
name
  The printf(3) format string to be used to construct the descriptive name of the thread. The resulted descriptive name should be shorter than `PTHREAD_MAX_NAMELEN_NP`.
arg
  The printf(3) argument used with name.

# RETURN VALUES

Both functions return 0 on success. Otherwise, an error number is returned to indicate the error.

# COMPATIBILITY

Both functions are non-standard extensions.

# ERRORS

Both functions may fail if:

[`EINVAL`]
  Invalid parameter.
[`ESRCH`]
  Non-existent thread.

The `pthread_setname_np`() function may also fail if:

[`ENOMEM`]
  There was insufficient memory for the operation.

# SEE ALSO

pthread_attr_get_np(3), pthread_attr_getname_np(3)

July 9, 2010 | NetBSD 9.1