Sets the maximal allowed number of threads for pool.
A value of -1 means that the maximal number of threads
is unlimited. If pool is an exclusive thread pool, setting
the maximal number of threads to -1 is not allowed.
Setting max_threads to 0 means stopping all work for pool.
It is effectively frozen until max_threads is set to a non-zero
value again.
A thread is never terminated while calling func, as supplied by
g_thread_pool_new(). Instead the maximal number of threads only
has effect for the allocation of new threads in g_thread_pool_push().
A new thread is allocated, whenever the number of currently
running threads in pool is smaller than the maximal number.
error can be NULL to ignore errors, or non-NULL to report
errors. An error can only occur when a new thread couldn't be
created.
Before version 2.32, this function did not return a success status.
Sets the maximal allowed number of threads for pool. A value of -1 means that the maximal number of threads is unlimited. If pool is an exclusive thread pool, setting the maximal number of threads to -1 is not allowed. Setting max_threads to 0 means stopping all work for pool. It is effectively frozen until max_threads is set to a non-zero value again. A thread is never terminated while calling func, as supplied by g_thread_pool_new(). Instead the maximal number of threads only has effect for the allocation of new threads in g_thread_pool_push(). A new thread is allocated, whenever the number of currently running threads in pool is smaller than the maximal number. error can be NULL to ignore errors, or non-NULL to report errors. An error can only occur when a new thread couldn't be created. Before version 2.32, this function did not return a success status.