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-rw-r--r--svm/persist.c258
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diff --git a/svm/persist.c b/svm/persist.c
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--- a/svm/persist.c
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-/*
- *------------------------------------------------------------------
- * persist.c - persistent data structure storage test / demo code
- *
- * Copyright (c) 2013 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.
- *------------------------------------------------------------------
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <netinet/in.h>
-#include <signal.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <time.h>
-#include <fcntl.h>
-#include <string.h>
-#include <vppinfra/clib.h>
-#include <vppinfra/vec.h>
-#include <vppinfra/hash.h>
-#include <vppinfra/bitmap.h>
-#include <vppinfra/fifo.h>
-#include <vppinfra/time.h>
-#include <vppinfra/mheap.h>
-#include <vppinfra/heap.h>
-#include <vppinfra/pool.h>
-#include <vppinfra/format.h>
-#include <vppinfra/serialize.h>
-#include <svmdb.h>
-
-typedef struct
-{
- svmdb_client_t *c;
-} persist_main_t;
-
-persist_main_t persist_main;
-
-typedef struct
-{
- u8 *string1;
- u8 *string2;
-} demo_struct2_t;
-
-typedef struct
-{
- demo_struct2_t *demo2;
- u8 *name;
-} demo_struct1_t;
-
-/*
- * Data structures in persistent shared memory, all the time
- */
-clib_error_t *
-persist_malloc (persist_main_t * pm)
-{
- demo_struct2_t *demo2;
- demo_struct1_t *demo1;
- time_t starttime = time (0);
- char *datestring = ctime (&starttime);
- void *oldheap;
-
- /* Get back the root pointer */
- demo1 = svmdb_local_get_variable_reference
- (pm->c, SVMDB_NAMESPACE_VEC, "demo1_location");
-
- /* It doesnt exist create our data structures */
- if (demo1 == 0)
- {
- /* If you want MP / thread safety, lock the region... */
- pthread_mutex_lock (&pm->c->db_rp->mutex);
-
- /* Switch to the shared memory region heap */
- oldheap = svm_push_data_heap (pm->c->db_rp);
-
- /* Allocate the top-level structure as a single element vector */
- vec_validate (demo1, 0);
-
- /* Allocate the next-level structure as a plain old memory obj */
- demo2 = clib_mem_alloc (sizeof (*demo2));
-
- demo1->demo2 = demo2;
- demo1->name = format (0, "My name is Ishmael%c", 0);
- demo2->string1 = format (0, "Here is string1%c", 0);
- demo2->string2 = format (0, "Born at %s%c", datestring, 0);
-
- /* Back to the process-private heap */
- svm_pop_heap (oldheap);
- pthread_mutex_unlock (&pm->c->db_rp->mutex);
-
- /*
- * Set the root pointer. Note: this guy switches heaps, locks, etc.
- * We allocated demo1 as a vector to make this "just work..."
- */
- svmdb_local_set_vec_variable (pm->c, "demo1_location",
- demo1, sizeof (demo1));
-
- }
- else
- {
- /* retrieve and print data from shared memory */
- demo2 = demo1->demo2;
- fformat (stdout, "name: %s\n", demo1->name);
- fformat (stdout, "demo2 location: %llx\n", demo2);
- fformat (stdout, "string1: %s\n", demo2->string1);
- fformat (stdout, "string2: %s\n", demo2->string2);
- }
- return 0;
-}
-
-void
-unserialize_demo1 (serialize_main_t * sm, va_list * args)
-{
- demo_struct1_t **result = va_arg (*args, demo_struct1_t **);
- demo_struct1_t *demo1;
- demo_struct2_t *demo2;
-
- /* Allocate data structures in process private memory */
- demo1 = clib_mem_alloc (sizeof (*demo1));
- demo2 = clib_mem_alloc (sizeof (*demo2));
- demo1->demo2 = demo2;
-
- /* retrieve data from shared memory checkpoint */
- unserialize_cstring (sm, (char **) &demo1->name);
- unserialize_cstring (sm, (char **) &demo2->string1);
- unserialize_cstring (sm, (char **) &demo2->string2);
- *result = demo1;
-}
-
-void
-serialize_demo1 (serialize_main_t * sm, va_list * args)
-{
- demo_struct1_t *demo1 = va_arg (*args, demo_struct1_t *);
- demo_struct2_t *demo2 = demo1->demo2;
-
- serialize_cstring (sm, (char *) demo1->name);
- serialize_cstring (sm, (char *) demo2->string1);
- serialize_cstring (sm, (char *) demo2->string2);
-}
-
-/* Serialize / unserialize variant */
-clib_error_t *
-persist_serialize (persist_main_t * pm)
-{
- u8 *checkpoint;
- serialize_main_t sm;
-
- demo_struct2_t *demo2;
- demo_struct1_t *demo1;
- time_t starttime = time (0);
- char *datestring = ctime (&starttime);
-
- /* Get back the root pointer */
- checkpoint = svmdb_local_get_vec_variable (pm->c, "demo1_checkpoint",
- sizeof (u8));
-
- /* It doesnt exist create our data structures */
- if (checkpoint == 0)
- {
- /* Allocate data structures in process-private memory */
- demo1 = clib_mem_alloc (sizeof (*demo2));
- vec_validate (demo1, 0);
- demo2 = clib_mem_alloc (sizeof (*demo2));
-
- demo1->demo2 = demo2;
- demo1->name = format (0, "My name is Ishmael%c", 0);
- demo2->string1 = format (0, "Here is string1%c", 0);
- demo2->string2 = format (0, "Born at %s%c", datestring, 0);
-
- /* Create checkpoint */
- serialize_open_vector (&sm, checkpoint);
- serialize (&sm, serialize_demo1, demo1);
- checkpoint = serialize_close_vector (&sm);
-
- /* Copy checkpoint into shared memory */
- svmdb_local_set_vec_variable (pm->c, "demo1_checkpoint",
- checkpoint, sizeof (u8));
- /* Toss the process-private-memory original.. */
- vec_free (checkpoint);
- }
- else
- {
- /* Open the checkpoint */
- unserialize_open_data (&sm, checkpoint, vec_len (checkpoint));
- unserialize (&sm, unserialize_demo1, &demo1);
-
- /* Toss the process-private-memory checkpoint copy */
- vec_free (checkpoint);
-
- /* Off we go... */
- demo2 = demo1->demo2;
- fformat (stdout, "name: %s\n", demo1->name);
- fformat (stdout, "demo2 location: %llx\n", demo2);
- fformat (stdout, "string1: %s\n", demo2->string1);
- fformat (stdout, "string2: %s\n", demo2->string2);
- }
- return 0;
-}
-
-
-int
-main (int argc, char **argv)
-{
- unformat_input_t _input, *input = &_input;
- persist_main_t *pm = &persist_main;
- clib_error_t *error = 0;
-
- /* Make a 4mb database arena, chroot so it's truly private */
- pm->c = svmdb_map_chroot_size ("/ptest", 4 << 20);
-
- ASSERT (pm->c);
-
- unformat_init_command_line (input, argv);
-
- while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
- {
- if (unformat (input, "malloc"))
- error = persist_malloc (pm);
- else if (unformat (input, "serialize"))
- error = persist_serialize (pm);
- else
- {
- error = clib_error_return (0, "Unknown flavor '%U'",
- format_unformat_error, input);
- break;
- }
- }
-
- svmdb_unmap (pm->c);
-
- if (error)
- {
- clib_error_report (error);
- exit (1);
- }
- return 0;
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */