ust-fd: Add close_range declaration

[lttng-ust.git] / libringbuffer / shm.h

diff --git a/libringbuffer/shm.h b/libringbuffer/shm.h
deleted file mode 100644 (file)
index 4e9ced1..0000000
--- a/libringbuffer/shm.h
+++ /dev/null
@@ -1,84 +0,0 @@
-#ifndef _LIBRINGBUFFER_SHM_H
-#define _LIBRINGBUFFER_SHM_H
-
-/*
- * libringbuffer/shm.h
- *
- * Copyright 2011 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * Dual LGPL v2.1/GPL v2 license.
- */
-
-#include <stdint.h>
-#include "ust/core.h"
-#include "usterr_signal_safe.h"
-
-#define SHM_MAGIC      0x54335433
-#define SHM_MAJOR      0
-#define SHM_MINOR      1
-
-/*
- * Defining a max shm offset, for debugging purposes.
- */
-#if (CAA_BITS_PER_LONG == 32)
-/* Define the maximum shared memory size to 128MB on 32-bit machines */
-#define MAX_SHM_SIZE   134217728
-#else
-/* Define the maximum shared memory size to 8GB on 64-bit machines */
-#define MAX_SHM_SIZE   8589934592
-#endif
-
-#define DECLARE_SHMP(type, name)       type *****name
-
-struct shm_header {
-       uint32_t magic;
-       uint8_t major;
-       uint8_t minor;
-       uint8_t bits_per_long;
-       size_t shm_size, shm_allocated;
-
-       DECLARE_SHMP(struct channel, chan);
-};
-
-struct shm_handle {
-       struct shm_header *header;      /* beginning of mapping */
-       int shmfd;                      /* process-local file descriptor */
-};
-
-#define shmp(shm_offset)               \
-       ((__typeof__(****(shm_offset))) (((char *) &(shm_offset)) + (ptrdiff_t) (shm_offset)))
-
-#define _shmp_abs(a)   ((a < 0) ? -(a) : (a))
-
-static inline
-void _set_shmp(ptrdiff_t *shm_offset, void *ptr)
-{
-       *shm_offset = (((char *) ptr) - ((char *) shm_offset));
-       assert(_shmp_abs(*shm_offset) < MAX_SHM_SIZE);
-}
-
-#define set_shmp(shm_offset, ptr)      \
-       _set_shmp((ptrdiff_t *) ****(shm_offset), ptr)
-
-/* Shared memory is already zeroed by shmget */
-/* *NOT* multithread-safe (should be protected by mutex) */
-static inline
-void *zalloc_shm(struct shm_header *shm_header, size_t len)
-{
-       void *ret;
-
-       if (shm_header->shm_size - shm_header->shm_allocated < len)
-               return NULL;
-       ret = (char *) shm_header + shm_header->shm_allocated;
-       shm_header->shm_allocated += len;
-       return ret;
-}
-
-static inline
-void align_shm(struct shm_header *shm_header, size_t align)
-{
-       size_t offset_len = offset_align(shm_header->shm_allocated, align);
-       shm_header->shm_allocated += offset_len;
-}
-
-#endif /* _LIBRINGBUFFER_SHM_H */