diff options
Diffstat (limited to 'svm/ssvm.c')
| -rw-r--r-- | svm/ssvm.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/svm/ssvm.c b/svm/ssvm.c deleted file mode 100644 index 6f409eb68b6..00000000000 --- a/svm/ssvm.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * Copyright (c) 2015 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 "ssvm.h" - -int -ssvm_master_init (ssvm_private_t * ssvm, u32 master_index) -{ - int ssvm_fd; - u8 *ssvm_filename; - u8 junk = 0; - int flags; - ssvm_shared_header_t *sh; - u64 ticks = clib_cpu_time_now (); - u64 randomize_baseva; - void *oldheap; - - if (ssvm->ssvm_size == 0) - return SSVM_API_ERROR_NO_SIZE; - - ssvm_filename = format (0, "/dev/shm/%s%c", ssvm->name, 0); - - unlink ((char *) ssvm_filename); - - vec_free (ssvm_filename); - - ssvm_fd = shm_open ((char *) ssvm->name, O_RDWR | O_CREAT | O_EXCL, 0777); - - if (ssvm_fd < 0) - { - clib_unix_warning ("create segment '%s'", ssvm->name); - return SSVM_API_ERROR_CREATE_FAILURE; - } - - if (lseek (ssvm_fd, ssvm->ssvm_size, SEEK_SET) < 0) - { - clib_unix_warning ("lseek"); - close (ssvm_fd); - return SSVM_API_ERROR_SET_SIZE; - } - - if (write (ssvm_fd, &junk, 1) != 1) - { - clib_unix_warning ("set ssvm size"); - close (ssvm_fd); - return SSVM_API_ERROR_SET_SIZE; - } - - flags = MAP_SHARED; - if (ssvm->requested_va) - flags |= MAP_FIXED; - - randomize_baseva = (ticks & 15) * MMAP_PAGESIZE; - - if (ssvm->requested_va) - ssvm->requested_va += randomize_baseva; - - sh = ssvm->sh = - (ssvm_shared_header_t *) mmap ((void *) ssvm->requested_va, - ssvm->ssvm_size, PROT_READ | PROT_WRITE, - flags, ssvm_fd, 0); - - if (ssvm->sh == MAP_FAILED) - { - clib_unix_warning ("mmap"); - close (ssvm_fd); - return SSVM_API_ERROR_MMAP; - } - - close (ssvm_fd); - - ssvm->my_pid = getpid (); - sh->master_pid = ssvm->my_pid; - sh->ssvm_size = ssvm->ssvm_size; - sh->heap = mheap_alloc_with_flags - (((u8 *) sh) + MMAP_PAGESIZE, ssvm->ssvm_size - MMAP_PAGESIZE, - MHEAP_FLAG_DISABLE_VM | MHEAP_FLAG_THREAD_SAFE); - - sh->ssvm_va = pointer_to_uword (sh); - sh->master_index = master_index; - - oldheap = ssvm_push_heap (sh); - sh->name = format (0, "%s%c", ssvm->name, 0); - ssvm_pop_heap (oldheap); - - ssvm->i_am_master = 1; - - /* The application has to set set sh->ready... */ - return 0; -} - -int -ssvm_slave_init (ssvm_private_t * ssvm, int timeout_in_seconds) -{ - struct stat stat; - int ssvm_fd = -1; - ssvm_shared_header_t *sh; - - ssvm->i_am_master = 0; - - while (timeout_in_seconds-- > 0) - { - if (ssvm_fd < 0) - ssvm_fd = shm_open ((char *) ssvm->name, O_RDWR, 0777); - if (ssvm_fd < 0) - { - sleep (1); - continue; - } - if (fstat (ssvm_fd, &stat) < 0) - { - sleep (1); - continue; - } - - if (stat.st_size > 0) - goto map_it; - } - clib_warning ("slave timeout"); - return SSVM_API_ERROR_SLAVE_TIMEOUT; - -map_it: - sh = (void *) mmap (0, MMAP_PAGESIZE, PROT_READ | PROT_WRITE, MAP_SHARED, - ssvm_fd, 0); - if (sh == MAP_FAILED) - { - clib_unix_warning ("slave research mmap"); - close (ssvm_fd); - return SSVM_API_ERROR_MMAP; - } - - while (timeout_in_seconds-- > 0) - { - if (sh->ready) - goto re_map_it; - } - close (ssvm_fd); - munmap (sh, MMAP_PAGESIZE); - clib_warning ("slave timeout 2"); - return SSVM_API_ERROR_SLAVE_TIMEOUT; - -re_map_it: - ssvm->requested_va = (u64) sh->ssvm_va; - ssvm->ssvm_size = sh->ssvm_size; - munmap (sh, MMAP_PAGESIZE); - - sh = ssvm->sh = (void *) mmap ((void *) ssvm->requested_va, ssvm->ssvm_size, - PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_FIXED, ssvm_fd, 0); - - if (sh == MAP_FAILED) - { - clib_unix_warning ("slave final mmap"); - close (ssvm_fd); - return SSVM_API_ERROR_MMAP; - } - sh->slave_pid = getpid (); - return 0; -} - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |