fd-io-styleify for svm
Change-Id: I816de8b1f255dc3bc6d2904566ea0b0f68fac5d8 Signed-off-by: Dave Barach <dave@barachs.net>
This commit is contained in:
Dave Barach
226
svm/svm.h
226
svm/svm.h
@@ -1,6 +1,6 @@
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/*
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/*
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*------------------------------------------------------------------
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* svm.h - shared VM allocation, mmap(...MAP_FIXED...)
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* svm.h - shared VM allocation, mmap(...MAP_FIXED...)
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* brain police
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*
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* Copyright (c) 2009 Cisco and/or its affiliates.
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@@ -27,162 +27,178 @@
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#define MMAP_PAGESIZE (clib_mem_get_page_size())
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#define SVM_VERSION ((1<<16) | 1) /* set to declare region ready. */
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#define SVM_VERSION ((1<<16) | 1) /* set to declare region ready. */
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#define SVM_FLAGS_MHEAP (1<<0) /* region contains an mheap */
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#define SVM_FLAGS_FILE (1<<1) /* region backed by one or more files */
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#define SVM_FLAGS_NODATA (1<<2) /* region will be further subdivided */
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#define SVM_FLAGS_NEED_DATA_INIT (1<<3)
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#define SVM_FLAGS_MHEAP (1<<0) /* region contains an mheap */
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#define SVM_FLAGS_FILE (1<<1) /* region backed by one or more files */
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#define SVM_FLAGS_NODATA (1<<2) /* region will be further subdivided */
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#define SVM_FLAGS_NEED_DATA_INIT (1<<3)
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#define SVM_PVT_MHEAP_SIZE (128<<10) /* region's private mheap (128k) */
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#define SVM_PVT_MHEAP_SIZE (128<<10) /* region's private mheap (128k) */
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typedef struct svm_region_ {
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volatile uword version;
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pthread_mutex_t mutex;
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pthread_cond_t condvar;
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int mutex_owner_pid; /* in case of trouble */
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int mutex_owner_tag;
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uword flags;
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uword virtual_base; /* base of the region object */
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uword virtual_size;
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void *region_heap;
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void *data_base; /* data portion base address */
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void *data_heap; /* data heap, if any */
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volatile void *user_ctx; /* user context pointer */
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/* stuff allocated in the region's heap */
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uword bitmap_size; /* nbits in virtual alloc bitmap */
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uword *bitmap; /* the bitmap */
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char *region_name;
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char *backing_file;
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char **filenames;
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uword *client_pids;
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/* pad */
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typedef struct svm_region_
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{
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volatile uword version;
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pthread_mutex_t mutex;
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pthread_cond_t condvar;
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int mutex_owner_pid; /* in case of trouble */
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int mutex_owner_tag;
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uword flags;
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uword virtual_base; /* base of the region object */
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uword virtual_size;
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void *region_heap;
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void *data_base; /* data portion base address */
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void *data_heap; /* data heap, if any */
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volatile void *user_ctx; /* user context pointer */
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/* stuff allocated in the region's heap */
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uword bitmap_size; /* nbits in virtual alloc bitmap */
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uword *bitmap; /* the bitmap */
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char *region_name;
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char *backing_file;
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char **filenames;
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uword *client_pids;
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/* pad */
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/* next page:
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* (64K) clib heap for the region itself
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*
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* data_base -> whatever is in this region
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*/
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/* next page:
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* (64K) clib heap for the region itself
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*
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* data_base -> whatever is in this region
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*/
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} svm_region_t;
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typedef struct svm_map_region_args_ {
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char *root_path; /* NULL means use the truly global arena */
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char *name;
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uword baseva;
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uword size;
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uword flags;
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char *backing_file;
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uword backing_mmap_size;
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/* uid, gid to own the svm region(s) */
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int uid;
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int gid;
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typedef struct svm_map_region_args_
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{
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char *root_path; /* NULL means use the truly global arena */
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char *name;
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uword baseva;
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uword size;
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uword flags;
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char *backing_file;
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uword backing_mmap_size;
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/* uid, gid to own the svm region(s) */
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int uid;
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int gid;
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} svm_map_region_args_t;
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/*
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* Memory shared across all router instances. Packet buffers, etc
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* Base should be "out of the way," and size should be big enough to
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* Memory shared across all router instances. Packet buffers, etc
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* Base should be "out of the way," and size should be big enough to
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* cover everything we plan to put here.
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*/
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#define SVM_GLOBAL_REGION_BASEVA 0x30000000
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#define SVM_GLOBAL_REGION_SIZE (64<<20)
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#define SVM_GLOBAL_REGION_SIZE (64<<20)
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#define SVM_GLOBAL_REGION_NAME "/global_vm"
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/*
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* Memory shared across individual router instances.
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* Memory shared across individual router instances.
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*/
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#define SVM_OVERLAY_REGION_BASEVA \
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(SVM_GLOBAL_REGION_BASEVA + SVM_GLOBAL_REGION_SIZE)
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#define SVM_OVERLAY_REGION_SIZE (1<<20)
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#define SVM_OVERLAY_REGION_SIZE (1<<20)
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#define SVM_OVERLAY_REGION_BASENAME "/overlay_vm"
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typedef struct {
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u8 *subregion_name;
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typedef struct
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{
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u8 *subregion_name;
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} svm_subregion_t;
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typedef struct {
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svm_subregion_t *subregions; /* subregion pool */
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uword *name_hash;
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u8 *root_path;
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typedef struct
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{
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svm_subregion_t *subregions; /* subregion pool */
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uword *name_hash;
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u8 *root_path;
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} svm_main_region_t;
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void *svm_region_find_or_create (svm_map_region_args_t *a);
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void svm_region_init(void);
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void svm_region_init_chroot(char *root_path);
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void svm_region_init_chroot_uid_gid(char *root_path, int uid, int gid);
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void *svm_region_find_or_create (svm_map_region_args_t * a);
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void svm_region_init (void);
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void svm_region_init_chroot (char *root_path);
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void svm_region_init_chroot_uid_gid (char *root_path, int uid, int gid);
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void svm_region_exit (void);
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void svm_region_unmap(void *rp_arg);
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void svm_region_unmap (void *rp_arg);
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void svm_client_scan (char *root_path);
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void svm_client_scan_this_region_nolock (svm_region_t *rp);
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u8 *shm_name_from_svm_map_region_args (svm_map_region_args_t *a);
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void svm_client_scan_this_region_nolock (svm_region_t * rp);
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u8 *shm_name_from_svm_map_region_args (svm_map_region_args_t * a);
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static inline void *svm_mem_alloc (svm_region_t *rp, uword size)
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static inline void *
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svm_mem_alloc (svm_region_t * rp, uword size)
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{
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u8 *oldheap;
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ASSERT(rp->flags & SVM_FLAGS_MHEAP);
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u8 *rv;
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u8 *oldheap;
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ASSERT (rp->flags & SVM_FLAGS_MHEAP);
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u8 *rv;
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pthread_mutex_lock(&rp->mutex);
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oldheap = clib_mem_set_heap(rp->data_heap);
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rv = clib_mem_alloc (size);
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clib_mem_set_heap(oldheap);
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pthread_mutex_unlock(&rp->mutex);
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return (rv);
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pthread_mutex_lock (&rp->mutex);
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oldheap = clib_mem_set_heap (rp->data_heap);
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rv = clib_mem_alloc (size);
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clib_mem_set_heap (oldheap);
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pthread_mutex_unlock (&rp->mutex);
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return (rv);
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}
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static inline void *svm_mem_alloc_aligned_at_offset (svm_region_t *rp,
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uword size,
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uword align,
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uword offset)
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static inline void *
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svm_mem_alloc_aligned_at_offset (svm_region_t * rp,
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uword size, uword align, uword offset)
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{
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u8 *oldheap;
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ASSERT(rp->flags & SVM_FLAGS_MHEAP);
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u8 *rv;
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u8 *oldheap;
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ASSERT (rp->flags & SVM_FLAGS_MHEAP);
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u8 *rv;
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pthread_mutex_lock(&rp->mutex);
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oldheap = clib_mem_set_heap(rp->data_heap);
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rv = clib_mem_alloc_aligned_at_offset (size, align, offset);
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clib_mem_set_heap(oldheap);
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pthread_mutex_unlock(&rp->mutex);
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return (rv);
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pthread_mutex_lock (&rp->mutex);
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oldheap = clib_mem_set_heap (rp->data_heap);
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rv = clib_mem_alloc_aligned_at_offset (size, align, offset);
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clib_mem_set_heap (oldheap);
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pthread_mutex_unlock (&rp->mutex);
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return (rv);
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}
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static inline void svm_mem_free (svm_region_t *rp, void *ptr)
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static inline void
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svm_mem_free (svm_region_t * rp, void *ptr)
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{
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u8 *oldheap;
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ASSERT(rp->flags & SVM_FLAGS_MHEAP);
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u8 *oldheap;
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ASSERT (rp->flags & SVM_FLAGS_MHEAP);
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pthread_mutex_lock(&rp->mutex);
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oldheap = clib_mem_set_heap(rp->data_heap);
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clib_mem_free (ptr);
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clib_mem_set_heap(oldheap);
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pthread_mutex_unlock(&rp->mutex);
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pthread_mutex_lock (&rp->mutex);
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oldheap = clib_mem_set_heap (rp->data_heap);
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clib_mem_free (ptr);
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clib_mem_set_heap (oldheap);
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pthread_mutex_unlock (&rp->mutex);
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}
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static inline void *svm_push_pvt_heap (svm_region_t *rp)
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static inline void *
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svm_push_pvt_heap (svm_region_t * rp)
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{
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u8 *oldheap;
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oldheap = clib_mem_set_heap(rp->region_heap);
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return ((void *) oldheap);
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u8 *oldheap;
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oldheap = clib_mem_set_heap (rp->region_heap);
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return ((void *) oldheap);
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}
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static inline void *svm_push_data_heap (svm_region_t *rp)
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static inline void *
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svm_push_data_heap (svm_region_t * rp)
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{
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u8 *oldheap;
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oldheap = clib_mem_set_heap(rp->data_heap);
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return ((void *) oldheap);
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u8 *oldheap;
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oldheap = clib_mem_set_heap (rp->data_heap);
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return ((void *) oldheap);
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}
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static inline void svm_pop_heap (void *oldheap)
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static inline void
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svm_pop_heap (void *oldheap)
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{
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clib_mem_set_heap(oldheap);
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clib_mem_set_heap (oldheap);
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}
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u8 * format_svm_region (u8 * s, va_list * args);
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u8 *format_svm_region (u8 * s, va_list * args);
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svm_region_t *svm_get_root_rp (void);
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#endif /* __included_svm_h__ */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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