diff options
Diffstat (limited to 'storage/xtradb/os/os0proc.c')
| -rw-r--r-- | storage/xtradb/os/os0proc.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/storage/xtradb/os/os0proc.c b/storage/xtradb/os/os0proc.c index 4567d96b6f4..48922886f23 100644 --- a/storage/xtradb/os/os0proc.c +++ b/storage/xtradb/os/os0proc.c @@ -229,173 +229,3 @@ os_mem_free_large( } #endif } - -/****************************************************************//** -Allocates or attaches and reuses shared memory segment. -The content is not cleared automatically. -@return allocated memory */ -UNIV_INTERN -void* -os_shm_alloc( -/*=========*/ - ulint* n, /*!< in/out: number of bytes */ - uint key, - ibool* is_new) -{ - void* ptr; -#if defined HAVE_SYS_IPC_H && HAVE_SYS_SHM_H - ulint size; - int shmid; - - *is_new = FALSE; - fprintf(stderr, - "InnoDB: The shared memory segment containing the buffer pool is: key %#x (%d).\n", - key, key); -# if defined HAVE_LARGE_PAGES && defined UNIV_LINUX - if (!os_use_large_pages || !os_large_page_size) { - goto skip; - } - - /* Align block size to os_large_page_size */ - ut_ad(ut_is_2pow(os_large_page_size)); - size = ut_2pow_round(*n + (os_large_page_size - 1), - os_large_page_size); - - shmid = shmget((key_t)key, (size_t)size, - IPC_CREAT | IPC_EXCL | SHM_HUGETLB | SHM_R | SHM_W); - if (shmid < 0) { - if (errno == EEXIST) { - fprintf(stderr, - "InnoDB: HugeTLB: The shared memory segment exists.\n"); - shmid = shmget((key_t)key, (size_t)size, - SHM_HUGETLB | SHM_R | SHM_W); - if (shmid < 0) { - fprintf(stderr, - "InnoDB: HugeTLB: Warning: Failed to allocate %lu bytes. (reuse) errno %d\n", - size, errno); - goto skip; - } else { - fprintf(stderr, - "InnoDB: HugeTLB: The existent shared memory segment is used.\n"); - } - } else { - fprintf(stderr, - "InnoDB: HugeTLB: Warning: Failed to allocate %lu bytes. (new) errno %d\n", - size, errno); - goto skip; - } - } else { - *is_new = TRUE; - fprintf(stderr, - "InnoDB: HugeTLB: A new shared memory segment has been created .\n"); - } - - ptr = shmat(shmid, NULL, 0); - if (ptr == (void *)-1) { - fprintf(stderr, - "InnoDB: HugeTLB: Warning: Failed to attach shared memory segment, errno %d\n", - errno); - ptr = NULL; - } - - if (ptr) { - *n = size; - os_fast_mutex_lock(&ut_list_mutex); - ut_total_allocated_memory += size; - os_fast_mutex_unlock(&ut_list_mutex); - UNIV_MEM_ALLOC(ptr, size); - return(ptr); - } -skip: - *is_new = FALSE; -# endif /* HAVE_LARGE_PAGES && defined UNIV_LINUX */ -# ifdef HAVE_GETPAGESIZE - size = getpagesize(); -# else - size = UNIV_PAGE_SIZE; -# endif - /* Align block size to system page size */ - ut_ad(ut_is_2pow(size)); - size = *n = ut_2pow_round(*n + (size - 1), size); - - shmid = shmget((key_t)key, (size_t)size, - IPC_CREAT | IPC_EXCL | SHM_R | SHM_W); - if (shmid < 0) { - if (errno == EEXIST) { - fprintf(stderr, - "InnoDB: A shared memory segment containing the buffer pool seems to already exist.\n"); - shmid = shmget((key_t)key, (size_t)size, - SHM_R | SHM_W); - if (shmid < 0) { - fprintf(stderr, - "InnoDB: Warning: Failed to allocate %lu bytes. (reuse) errno %d\n", - size, errno); - ptr = NULL; - goto end; - } else { - fprintf(stderr, - "InnoDB: The existent shared memory segment is used.\n"); - } - } else { - fprintf(stderr, - "InnoDB: Warning: Failed to allocate %lu bytes. (new) errno %d\n", - size, errno); - ptr = NULL; - goto end; - } - } else { - *is_new = TRUE; - fprintf(stderr, - "InnoDB: A new shared memory segment has been created.\n"); - } - - ptr = shmat(shmid, NULL, 0); - if (ptr == (void *)-1) { - fprintf(stderr, - "InnoDB: Warning: Failed to attach shared memory segment, errno %d\n", - errno); - ptr = NULL; - } - - if (ptr) { - *n = size; - os_fast_mutex_lock(&ut_list_mutex); - ut_total_allocated_memory += size; - os_fast_mutex_unlock(&ut_list_mutex); - UNIV_MEM_ALLOC(ptr, size); - } -end: -#else /* HAVE_SYS_IPC_H && HAVE_SYS_SHM_H */ - fprintf(stderr, "InnoDB: shared memory segment is not supported.\n"); - ptr = NULL; -#endif /* HAVE_SYS_IPC_H && HAVE_SYS_SHM_H */ - return(ptr); -} - -/****************************************************************//** -Detach shared memory segment. */ -UNIV_INTERN -void -os_shm_free( -/*========*/ - void *ptr, /*!< in: pointer returned by - os_shm_alloc() */ - ulint size) /*!< in: size returned by - os_shm_alloc() */ -{ - os_fast_mutex_lock(&ut_list_mutex); - ut_a(ut_total_allocated_memory >= size); - os_fast_mutex_unlock(&ut_list_mutex); - -#if defined HAVE_SYS_IPC_H && HAVE_SYS_SHM_H - if (!shmdt(ptr)) { - os_fast_mutex_lock(&ut_list_mutex); - ut_a(ut_total_allocated_memory >= size); - ut_total_allocated_memory -= size; - os_fast_mutex_unlock(&ut_list_mutex); - UNIV_MEM_FREE(ptr, size); - } -#else /* HAVE_SYS_IPC_H && HAVE_SYS_SHM_H */ - fprintf(stderr, "InnoDB: shared memory segment is not supported.\n"); -#endif /* HAVE_SYS_IPC_H && HAVE_SYS_SHM_H */ -} |