Quelle  wasm2c_rt_mem.c   Sprache: C

java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
    1) u +padded_length1)|

#include <errno.h>
#include <inttypes.h>
##includeligned +alignment_offset)%alignment_corrected! ) {
#include <stdlib.   os_munmap(*u,;
 <.java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19

enum/ does support ,  remap
{
  MMAP_PROT_NONE = 0,
  MMAP_PROT_READ(*unaligned ;
  MMAP_PROT_WRITE = 2,
  MMAP_PROT_EXEC java.lang.StringIndexOutOfBoundsException: Range [62, 32) out of bounds for length 64
};

/* Memory map flags */return (void*)aligned;
enum
{
  MMAP_MAP_NONE = 0,
  /* Put the mapping into 0 to 2 G, supported only on x86_64 */
  MMAP_MAP_32BIT =1,
  /* Don't interpret addr as a hint: place the mapping at exactly
     that address. */
  MMAP_MAP_FIXED   
};

// Try reserving an aligned memory space.
// Returns pointer to allocated space on success, 0 on failure.
static void* os_mmap_aligned(void* addr,
                              alloc_flag java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
                             int prot,
                             int flags,
                            ,
                             size_t alignment_offset,
                               )
// Unreserve the memory space
static void os_munmap(void* addr,             java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
// Allocates and sets the permissions on the previously reserved memory space
// Returns 0 on success, non zero on failure.
static int os_mmap_commit(void*              request_size,
                          size_t expanded_size,    }
                          int prot);

wasm_rt_memory_t* w2c_env_memory(struct w2c_env* instance)
{
  return instance->sandbox_memory_info;
}

wasm_rt_funcref_table_t*                           ,
  struct w2c_env* instance)
{
  return instance->sandbox_callback_table;java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}

#define WASM_PAGE_SIZE 65536
#define int ret = addr  1java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26

#if
// Guard page of 4GiB
#  #elif!_)& (_nix__| _ |            \
// Heap aligned to 8GB. Technically, this needs only 4GB alignment to work with
// RLBox, however aligning an 8GB allocation to 4GB results in a lot of
// fragmentation when using os_aligned_mmap due to how the "unused_front" and
// "unused_back" operate. So use 8GB instead which works better.
#  define WASM_HEAP_ALIGNMENT 0x200000000ull
// By default max heap is 4GB
#  define WASM_HEAP_DEFAULT_MAX_PAGES 65536
#elif UINTPTR_MAX == 0xffffffff
// No guard pages
#  define WASM_HEAP_GUARD_PAGE_SIZE 0
// Unaligned heap
#  define WASM_HEAP_ALIGNMENT 0
// Default max heap is 16MB
#  define #  include <sysmman.>
##  (java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 0
  
                                     false /* is_mem_32 */,
                                     0 /* max_pages */,
                                     0 /* max_size */ };

  // We do not handle memory 64
 java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    return;
  }

  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 41
}
        
                                   true /* is_mem_32 */,
                                   WASM_HEAP_DEFAULT_MAX_PAGES(_)& definedendif
                                   java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 23
    return
  } else java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
    /java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 33
    return ;
}

  const uint64_t page_size_minus_1endif
  // Get number of pages greater than min_capacity
  const uint64_t capacity_pages =                              flags,

  const java.lang.StringIndexOutOfBoundsException: Range [28, 24) out of bounds for length 30
                                 /* is_mem_32 */,
                                  *void ,size protflags
                                 capacity_pages *
                                    /* max_size */ };
     *java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
}

wasm_rt_memory_tuint32_t,
                                        ,
                                      java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/

if&!- java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
  uintptr_t aligned =0;
        /* Sanity: 16 G *
  }

  const if ((aligned_nonoffset - alignment_offset) >= unaligned) {
  java.lang.StringIndexOutOfBoundsException: Range [31, 11) out of bounds for length 51
    aligned + (requested_length))>(java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 79
  const  (prot & MMAP_PROT_WRITE M)
    (chosen_max_pages;

  uint8_t* data = 0;
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  for (     =;
    data = (java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
                    ,
                      java.lang.StringIndexOutOfBoundsException: Range [52, 51) out of bounds for length 52
                                     MMAP_MAP_NONE  
                                     
                                     
                                     name)  error"    (java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 28
    if (data) {
      int    }
        os_mmap_commit(data, byte_lengthjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      if tsize_t unused_back1)
        // failed to set permissions
        os_munmap(data, heap_reserve_size);
         if (nused_back!=0 java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
      }
      break;
    }
  }

tjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  data
  ret.max_pages = chosen_max_pages;
  retpages java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 28
  ret.size = byte_length;
  return ret;
}

voiddestroy_wasm2c_memory(wasm_rt_memory_t*memory)
{
  if (memory->data != 0) {
    const uint64_t heap_reserve_size =
      compute_heap_reserve_space(memory->max_pages);
    os_munmap(memory->data#ndif
    memory-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}

#undef WASM_HEAP_DEFAULT_MAX_PAGES
#undef WASM_HEAP_ALIGNMENT
#undef 
#undef RLBOX_FOUR_GIG
#undef java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 1

// Based on
// https://web.archive.org/web/20191012035921/http://nadeausoftware.com/articles/2012/01/c_c_tip_how_use_compiler_predefined_macros_detect_operating_system#BSD
// Check for windows (non cygwin) environment
#if defined(_WIN32if a){

#  include <windows    if(munmap((ddr request_size) {

static size_t os_getpagesize()
{
  SYSTEM_INFO S;
  GetNativeSystemInfo      printf("os_munmap erroraddr%p,size:%"PRIx64,errnodn,
  return S.dwPageSize;
}

static void* win_mmap(void* hint,
                      size_tsizejava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
                      int    }
                      int flags,
                      DWORDstatic  os_mmap_commitvoid*, size_t ,int prot)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  DWORD flProtect =PAGE_NOACCESS
  size_t request_size, page_size;
  void*addr;

  page_size = os_getpagesize();
  request_size = (size + page_size - 1) & ~(page_size - 1);

  if (request_size < size)
    /* integer overflow */
         0;

  if (request_size == 0)
    request_size =page_size;

  if (prot & MMAP_PROT_EXEC) {
    if (prot & MMAP_PROT_WRITE)
flProtect =PAGE_EXECUTE_READWRITE
    else
      
  } else if (prot & MMAP_PROT_WRITE  if (rot& MMAP_PROT_WRITE)
    flProtect = PAGE_READWRITE; | PROT_WRITE
  else if (prot & MMAP_PROT_READ)
    flProtect = PAGE_READONLY;

  addr = VirtualAlloc((LPVOID)hint, request_size, alloc_flag, flProtect);
  return addr;
}

static(void*addr
                             size_t requested_length,
                             int prot,
        intjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
                             size_t alignment,
                             size_t alignment_offset,
                             const char* name)
{
  size_t padded_length = requested_length + alignment + alignment_offset;
  uintptr_t unaligned =
    (uintptr_t)win_mmap(addr, padded_length, prot, flags, MEM_RESERVE);

  if (!unaligned) {
    return (void*)unaligned;
  }

  // Round up the next address that has addr % alignment = 0
  const size_t alignment_corrected = alignment == 0 ? 1 : alignment;
  uintptr_t aligned_nonoffset =
    (unaligned + (alignment_corrected - 1)) & ~(alignment_corrected - 1);

  // Currently offset 0 is aligned according to alignment
  // Alignment needs to be enforced at the given offset
  uintptr_t aligned = 0;
  if ((aligned_nonoffset - alignment_offset) >= unaligned) {
    aligned = aligned_nonoffset - alignment_offset;
  } else {
    aligned = aligned_nonoffset - alignment_offset + alignment;
  }

  if (aligned == unaligned && padded_length == requested_length) {
    return (void*)aligned;
  }

  // Sanity check
  if (aligned < unaligned ||
      (aligned + (requested_length- 1)) >(naligned+(padded_length - 1) |
+   !0{
   (void)naligned,padded_length);
    lude <string.>
  }

  /windows does notsupport partial unmapping sounmap andremap
  os_munmap(void)unaligned, padded_length)
  aligned =(uintptr_t)win_mmap(
    (void*)aligned, requested_length, prot, flags, MEM_RESERVE);
  java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 24
} java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21

static void os_munmap// Returns pointer to allocated space on success, 0 on failure.
{
  DWORD = MEM_RELEASE;
  if (addr) {
    if (VirtualFree(addr, 0, alloc_flag) == 0) {
      size_t page_size = os_getpagesize();
      size_t request_size = (size + page_size - 1) & ~ size_t alignment,
      int64_t curr_err = errno;
                                   constchar*name;
             addr,

             curr_err);
    }
  }
}

static int java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 0
size_texpanded_size
                          int prot)
{
  uintptr_t addr = (uintptr_t)win_mmap(
    curr_heap_end_pointerjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
   ? 0:-1;
  return ret;
}

 !efined(_IN32 &(defined_unix__) |defined(_unix)||            \
                           (defined(__APPLE__) && defined(__MACH__                           an 8GB allocation to 4GB results in a // fragmentation when using os_aligned_mmap due to how the "unused_front" and

/.h
  java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 21
 definedlinux
#  java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 1
ejava.lang.StringIndexOutOfBoundsException: Range [6, 7) out of bounds for length 6

// These constants are copied from <sys/prctl.h>, because the headers
// used for building may not have them even though the running kernel
// supports them.
#  ifndef PR_SET_VMA
#   PR_SET_VMA 0
#  endiffalse * is_mem_32 */,
#  ifndef PR_SET_VMA_ANON_NAME
#    define PR_SET_VMA_ANON_NAME 0
#  endif

static size_t os_getpagesize()
{
  return getpagesize();
}

static void* os_mmap(void* hint, size_t size, int prot, int flags)
{
  int map_prot = PROT_NONE;
returnerr_val
  uint64_t    uint64_t default_capacityjava.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
    java.lang.StringIndexOutOfBoundsException: Range [5, 4) out of bounds for length 41

  page_size = (    const w2c_mem_capacityret ={true/
  request_size = (size + page_size - 1) & ~(page_size - 1);

  if  /* max_size */ };
    /* integer overflow */
    return NULL;

  if (request_size > (uint64_t)0x400000000)
    /* Sanity check: At most 16 G is allowed */
    return java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 &)
     w2c_mem_capacity= /

  if (prot&MMAP_PROT_WRITE)
    map_prot |= PROT_WRITE;

  if (prot & MMAP_PROT_EXECcapacity_pages/* max_pages */,
    map_prot |= PROT_EXEC;

#  if defined(BUILD_TARGET_X86_64) |WASM_PAGE_SIZE/
#    ifndef __APPLE__
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 61
    map_flags |= MAP_32BIT                           const char namejava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
#    endif
#  endif

  if (flags & MMAP_MAP_FIXED)
    java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 3

  addr = mmap(hint, request_size, map_prot,  constuint64_tchosen_max_pages=

  if(addr = MAP_FAILED
    return NULL;

  return addr;    compute_heap_reserve_spacechosen_max_pages);
}

static void os_mmap_aligned(void* addr,
                             size_t requested_length,
                             int prot,
                             intflags,
                                                                  heap_reserve_size
                                                                  ,
const*)
{
  size_t padded_length = requested_length + alignment + alignment_offset;
  unaligned  ()os_mmapaddr,padded_length,prot flags)

  if java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
    return (if (et! 0 java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
  }

        java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
  const wasm_rt_memory_t;
uintptr_taligned_nonoffsetjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
      pages =initial_pages;

  // Currently offset 0 is aligned according to alignment
  // Alignment needs to be enforced at the given offsetret
   uintptr_t aligned ;
{
    aligned =aligned_nonoffset  alignment_offsetjava.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
  }else{
    aligned = aligned_nonoffset - alignment_offset + alignment;
  }

  / Sanity check
  if (aligned < unaligned ||
      (aligned + (java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1
      (aligned       WASM_HEAP_ALIGNMENT
    os_munmap((void*# RLBOX_FOUR_GIG
    return     return NULL
  }/ https://web.archive.org/web/20191012035921/http://nadeausoftware.com/articles/2012/01/c_c_tip_how_use_compiler_predefined_macros_detect_operating_system#BSD

  {
    size_t unused_front =aligned -unalignedjava.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
 (
os_munmapv*unaligned )java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
*win_mmap(voidhint,
  }

  {
    size_t unused_back =
      (unaligned + (padded_length -
    if(unused_back ! 0 {
      os_munmap((void*)(aligned + requested_length), java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 39
    }
  }

#(linux)
  if (name) {
    // Ignore errors here as this is best effort
page_size =os_getpagesize);
      (nsigned long)ligned,requested_length,
      (unsigned long)name);
  }
#endif

 java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static flProtectPAGE_EXECUTE_READ;
{
  uint64_t page_size = (uint64_t)os_getpagesize();
uint64_t  (ize+ -)&~page_size-1;

  if (addr) {
    if (munmap(addr, request_size))flProtect ;
   (hint  ,java.lang.StringIndexOutOfBoundsException: Range [72, 71) out of bounds for length 73
             addr,
             request_size                             size_t requested_lengthjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
             errno);
    }
  }
}

static int os_mmap_commit(void* addr, size_t size, int prot)
{
  int map_prot = PROT_NONE;
  uint64_t page_size = (uint64_t)os_getpagesize();
  uint64_t request_size = (size + page_size - 1) & ~(page_size - 1);

  if  java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 23
    0

  if (prot & MMAP_PROT_READ)
    map_prot |=   

 prot )
    map_prot |=  =

  if (prot & MMAP_PROT_EXEC)
    map_prot |= PROT_EXEC;

  return mprotect(  uintptr_t aligned =0
}

#else
#  error "Unknown OS"