Parameter 'fd' is always -1 for xbt_mheap_new. Kill dead code.

[simgrid.git] / src / xbt / mmalloc / mmprivate.h

diff --git a/src/xbt/mmalloc/mmprivate.h b/src/xbt/mmalloc/mmprivate.h
index 7ed76dd..bca9acd 100644 (file)
--- a/src/xbt/mmalloc/mmprivate.h
+++ b/src/xbt/mmalloc/mmprivate.h
@@ -1,6 +1,6 @@
 /* Declarations for `mmalloc' and friends. */
 
-/* Copyright (c) 2010-2019. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2010-2021. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -25,13 +25,7 @@
 #include <pthread.h>
 #include <stdint.h>
 
-#ifdef HAVE_LIMITS_H
-#  include <limits.h>
-#else
-#  ifndef CHAR_BIT
-#    define CHAR_BIT 8
-#  endif
-#endif
+#include <limits.h>
 
 #define MMALLOC_MAGIC    "mmalloc"       /* Mapped file magic number */
 #define MMALLOC_MAGIC_SIZE  8       /* Size of magic number buf */
@@ -94,7 +88,7 @@
 
 #define ADDRESS(B) ((void*) (((ADDR2UINT(B)) - 1) * BLOCKSIZE + (char*) mdp -> heapbase))
 
-SG_BEGIN_DECL()
+SG_BEGIN_DECL
 
 /* Doubly linked lists of free fragments.  */
 struct list {
@@ -176,13 +170,9 @@ typedef struct {
  * if such a file exists.
  * */
 struct mdesc {
-
   /** @brief Mutex locking the access to the heap */
   pthread_mutex_t mutex;
 
-  /** @brief Number of processes that attached the heap */
-  unsigned int refcount;
-
   /** @brief Chained lists of mdescs */
   struct mdesc *next_mdesc;
 
@@ -252,32 +242,19 @@ struct mdesc {
    */
   void *top;
 
-  /** @brief Open file descriptor for the file to which this malloc heap is mapped
-   *
-   * If this value is negative, MAP_ANONYMOUS memory is used.
-   *
-   * Also note that it may change each time the region is mapped and unmapped. */
-  int fd;
-
   /* @brief Instrumentation */
   struct mstats heapstats;
-
 };
 
 /* Bits to look at in the malloc descriptor flags word */
 
 #define MMALLOC_DEVZERO    (1 << 0)        /* Have mapped to /dev/zero */
-#define MMALLOC_ANONYMOUS (1 << 1)      /* Use anonymous mapping */
-#define MMALLOC_INITIALIZED  (1 << 2)        /* Initialized mmalloc */
+#define MMALLOC_INITIALIZED (1 << 1)      /* Initialized mmalloc */
 
 /* A default malloc descriptor for the single sbrk() managed region. */
 
 XBT_PUBLIC_DATA struct mdesc* __mmalloc_default_mdp;
 
-/* Remap a mmalloc region that was previously mapped. */
-
-XBT_PUBLIC void* __mmalloc_remap_core(xbt_mheap_t mdp);
-
 XBT_PUBLIC void* mmorecore(struct mdesc* mdp, ssize_t size);
 
 /** Thread-safety (if the mutex is already created)
@@ -293,6 +270,6 @@ XBT_PRIVATE int malloc_use_mmalloc(void);
 
 XBT_PRIVATE size_t mmalloc_get_bytes_used_remote(size_t heaplimit, const malloc_info* heapinfo);
 
-SG_END_DECL()
+SG_END_DECL
 
 #endif