/* -----------------------------------------------------------------------------
- * $Id: MBlock.c,v 1.6 1999/01/18 10:54:15 simonm Exp $
+ * $Id: MBlock.c,v 1.11 1999/03/11 11:21:47 simonm Exp $
+ *
+ * (c) The GHC Team 1998-1999
*
* MegaBlock Allocator Interface. This file contains all the dirty
* architecture-dependent hackery required to get a chunk of aligned
#include <sys/types.h>
#endif
-#ifdef HAVE_SYS_MMAN_H
-#include <sys/mman.h>
+#ifndef mingw32_TARGET_OS
+# ifdef HAVE_SYS_MMAN_H
+# include <sys/mman.h>
+# endif
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
-#if cygwin32_TARGET_OS
+#if HAVE_WINDOWS_H
#include <windows.h>
#endif
/* guess */
#define ASK_FOR_MEM_AT 0x50000000
+#elif osf3_TARGET_OS
+/* guess */
+#define ASK_FOR_MEM_AT 0x50000000
+
+#elif hpux_TARGET_OS
+/* guess */
+#define ASK_FOR_MEM_AT 0x50000000
+
#elif _WIN32
/* doesn't matter, we use a reserve/commit algorithm */
}
#ifndef _WIN32
-
void *
getMBlocks(nat n)
{
MAP_FIXED | MAP_PRIVATE, fd, 0);
close(fd);
}
+#elif hpux_TARGET_OS
+ ret = mmap(next_request, size, PROT_READ | PROT_WRITE,
+ MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
#else
ret = mmap(next_request, size, PROT_READ | PROT_WRITE,
MAP_ANON | MAP_PRIVATE, -1, 0);
*/
+char* base_non_committed = (char*)0;
+
+/* Reserve VM 128M at the time to try to minimise the slop cost. */
+#define SIZE_RESERVED_POOL ( 128 * 1024 * 1024 )
+
+/* This predicate should be inlined, really. */
+int
+is_heap_alloced(const void* x)
+{
+ return (((char*)(x) >= base_non_committed) &&
+ ((char*)(x) <= (base_non_committed + 128 * 1024 * 1024)));
+}
+
void *
getMBlocks(nat n)
{
- static char* base_non_committed = (char*)0;
static char* base_mblocks = (char*)0;
static char* next_request = (char*)0;
void* ret = (void*)0;
lnat size = MBLOCK_SIZE * n;
- /* Reserve VM 128M at the time to try to minimise the slop cost. */
-#define SIZE_RESERVED_POOL ( 128 * 1024 * 1024 )
-
if ( (base_non_committed == 0) ||
(next_request + size > base_non_committed + SIZE_RESERVED_POOL) ) {
base_non_committed = VirtualAlloc ( NULL
, PAGE_READWRITE
);
if ( base_non_committed == 0 ) {
-# ifdef DEBUG
+# if 1 /*def DEBUG*/
fprintf(stderr, "getMBlocks: VirtualAlloc failed with: %d\n", GetLastError());
# endif
ret=(void*)-1;
# endif
if ( ((char*)base_mblocks + size) > ((char*)base_non_committed + SIZE_RESERVED_POOL) ) {
-# ifdef DEBUG
+# if 1 /*def DEBUG*/
fprintf(stderr, "oops, committed too small a region to start with.");
# endif
ret=(void*)-1;
if ( ret != (void*)-1 ) {
ret = VirtualAlloc(next_request, size, MEM_COMMIT, PAGE_READWRITE);
if (ret == NULL) {
-# ifdef DEBUG
+# if 1 /*def DEBUG*/
fprintf(stderr, "getMBlocks: VirtualAlloc failed with: %d\n", GetLastError());
# endif
ret=(void*)-1;