| @node pthread_rwlock_rdlock |
| @section @code{pthread_rwlock_rdlock} |
| @findex pthread_rwlock_rdlock |
| |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_rwlock_rdlock.html} |
| |
| Gnulib module: pthread-rwlock |
| |
| Portability problems fixed by Gnulib: |
| @itemize |
| @item |
| This function is missing on some platforms: |
| Minix 3.1.8, mingw, MSVC 14, Android 4.3. |
| But the provided replacement is just a dummy on some of these platforms: |
| Minix 3.1.8. |
| @end itemize |
| |
| Portability problems not fixed by Gnulib: |
| @itemize |
| @item |
| This function prefers readers to writers (meaning, when this function is |
| called on an rwlock that is already taken by one or more readers, and |
| another writer is already waiting to take it, this function may return |
| successfully immediately) -- a behaviour that may lead to writer starvation -- |
| on some platforms: |
| glibc 2.28. |
| As a workaround, you can use the @code{gl_rwlock_t} type from the Gnulib |
| module @samp{lock}. |
| @end itemize |
