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/*
*------------------------------------------------------------------
* svm.h - shared VM allocation, mmap(...MAP_FIXED...)
* brain police
*
* Copyright (c) 2009 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*------------------------------------------------------------------
*/
#ifndef __included_svm_h__
#define __included_svm_h__
#include <pthread.h>
#include <vppinfra/clib.h>
#include <vppinfra/mem.h>
#include <svm/svm_common.h>
#define MMAP_PAGESIZE (clib_mem_get_page_size())
static inline void *
svm_mem_alloc (svm_region_t * rp, uword size)
{
u8 *oldheap;
ASSERT (rp->flags & SVM_FLAGS_MHEAP);
u8 *rv;
pthread_mutex_lock (&rp->mutex);
oldheap = clib_mem_set_heap (rp->data_heap);
rv = clib_mem_alloc (size);
clib_mem_set_heap (oldheap);
pthread_mutex_unlock (&rp->mutex);
return (rv);
}
static inline void *
svm_mem_alloc_aligned_at_offset (svm_region_t * rp,
uword size, uword align, uword offset)
{
u8 *oldheap;
ASSERT (rp->flags & SVM_FLAGS_MHEAP);
u8 *rv;
pthread_mutex_lock (&rp->mutex);
oldheap = clib_mem_set_heap (rp->data_heap);
rv = clib_mem_alloc_aligned_at_offset (size, align, offset,
1 /* yes, call os_out_of_memory */ );
clib_mem_set_heap (oldheap);
pthread_mutex_unlock (&rp->mutex);
return (rv);
}
static inline void
svm_mem_free (svm_region_t * rp, void *ptr)
{
u8 *oldheap;
ASSERT (rp->flags & SVM_FLAGS_MHEAP);
pthread_mutex_lock (&rp->mutex);
oldheap = clib_mem_set_heap (rp->data_heap);
clib_mem_free (ptr);
clib_mem_set_heap (oldheap);
pthread_mutex_unlock (&rp->mutex);
}
static inline void *
svm_push_pvt_heap (svm_region_t * rp)
{
u8 *oldheap;
oldheap = clib_mem_set_heap (rp->region_heap);
return ((void *) oldheap);
}
static inline void *
svm_push_data_heap (svm_region_t * rp)
{
u8 *oldheap;
oldheap = clib_mem_set_heap (rp->data_heap);
return ((void *) oldheap);
}
static inline void
svm_pop_heap (void *oldheap)
{
clib_mem_set_heap (oldheap);
}
#endif /* __included_svm_h__ */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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