Within an arena a client program creates one or more pools. A pool is responsible for requesting memory from the arena and making it available for allocation.
The type of pools.
A pool is responsible for requesting memory from the arena and making it available to the client program via mps_alloc() or via an allocation point.
pool_o points to a location that will hold a pointer to the new pool.
arena is the arena in which to create the pool.
class is the pool class of the new pool.
args are keyword arguments specific to the pool class. See the documentation for the pool class.
Returns MPS_RES_OK if the pool is created successfully, or another result code otherwise.
The pool persists until it is destroyed by calling mps_pool_destroy().
Deprecated
starting with version 1.112.
Use mps_pool_create_k() instead: the keyword arguments interface is more reliable and produces better error messages.
An alternative to mps_pool_create_k() that takes its extra arguments using the standard C variable argument list mechanism.
Deprecated
starting with version 1.112.
Use mps_pool_create_k() instead: the keyword arguments interface is more reliable and produces better error messages.
An alternative to mps_pool_create_k() that takes its extra arguments using the standard C va_list mechanism.
Destroy a pool.
pool is the pool to destroy.
This function checks the consistency of the pool, destroys the pool’s internal control structures and causes the pool’s memory to be returned to the arena for reuse by other pools, or to be returned to the operating system. Blocks allocated from the pool may no longer be used.
It is an error to destroy a pool without first destroying all allocation points and segregated allocation caches created in the pool.
Pools belong to pool classes that specify policies for how their memory is managed. Some pools are manually managed (you must call mps_free() to return a block of memory to the pool) and others are automatically managed (the garbage collector reclaims unreachable blocks).
See the Pool reference for a list of pool classes.
The type of pool classes.
Note
This should really have been called mps_pool_class_t but it is too late to change it now.
Determine the pool to which an address belongs.
pool_o points to a location that will hold the address of the pool, if one is found.
arena is the arena whose pools will be considered.
addr is the address.
If addr is the address of a location inside a block allocated from a pool in arena, then update the location pointed to by pool_o with the address of the pool, and return true.
If addr points to a location that is not managed by arena, return false.
If neither of the above conditions is satisfied, mps_addr_pool() may return either true or false.
Note
This function might return a false positive by returning true if you ask about an address that happens to be inside memory managed by a pool, but which is not inside a block allocated by that pool. It never returns a false negative.
The result from this function is valid only at the instant at which the function returned. In some circumstances the result may immediately become invalidated. For reliable results call this function and interpret the result while the arena is in the parked state.