/* simulate `sbrk' with an array in .bss, for `unexec' support for Cygwin;
complete rewrite of xemacs Cygwin `unexec' code
- Copyright (C) 2004-2013 Free Software Foundation, Inc.
+ Copyright (C) 2004-2015 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <unistd.h>
#ifdef __x86_64__
+#ifdef ENABLE_CHECKING
+#define STATIC_HEAP_SIZE (28 * 1024 * 1024)
+#else
+#define STATIC_HEAP_SIZE (19 * 1024 * 1024)
+#endif
+#else /* x86 */
+#ifdef ENABLE_CHECKING
#define STATIC_HEAP_SIZE (18 * 1024 * 1024)
#else
#define STATIC_HEAP_SIZE (13 * 1024 * 1024)
#endif
+#endif /* x86 */
int debug_sheap = 0;
#define BLOCKSIZE 4096
char bss_sbrk_buffer[STATIC_HEAP_SIZE];
+/* The following is needed in gmalloc.c */
+void *bss_sbrk_buffer_end = bss_sbrk_buffer + STATIC_HEAP_SIZE;
char *bss_sbrk_ptr;
+char *max_bss_sbrk_ptr;
int bss_sbrk_did_unexec;
void *
{
if (!bss_sbrk_ptr)
{
- bss_sbrk_ptr = bss_sbrk_buffer;
+ max_bss_sbrk_ptr = bss_sbrk_ptr = bss_sbrk_buffer;
#ifdef CYGWIN
sbrk (BLOCKSIZE); /* force space for fork to work */
#endif
if (debug_sheap)
printf ("allocated 0x%08x size %d\n", ret, request_size);
bss_sbrk_ptr += (int) request_size;
+ if (bss_sbrk_ptr > max_bss_sbrk_ptr)
+ max_bss_sbrk_ptr = bss_sbrk_ptr;
return ret;
}
}
report_sheap_usage (int die_if_pure_storage_exceeded)
{
char buf[200];
- sprintf (buf, "Static heap usage: %d of %d bytes",
- bss_sbrk_ptr - bss_sbrk_buffer, STATIC_HEAP_SIZE);
+ sprintf (buf, "Maximum static heap usage: %d of %d bytes",
+ max_bss_sbrk_ptr - bss_sbrk_buffer, STATIC_HEAP_SIZE);
/* Don't log messages, cause at this point, we're not allowed to create
buffers. */
message1_nolog (buf);