* fork.cc (fork_child): Move mmap initialization.

* shared.cc (shared_info::heap_chunk_size): Store info as megabytes.  Search
HKEY_LOCAL_MACHINE as well as HKEY_CURRENT_USER.
* shared_info.h (shared_info::initial_heap_size): Change element name to
reflect new functionality.
* strace.cc (strace::hello): Report on initial heap size.

winsup/cygwin/ChangeLog

@@ -1,3 +1,12 @@
+2002-10-18  Christopher Faylor  <cgf@redhat.com>
+
+	* fork.cc (fork_child): Move mmap initialization.
+	* shared.cc (shared_info::heap_chunk_size): Store info as megabytes.
+	Search HKEY_LOCAL_MACHINE as well as HKEY_CURRENT_USER.
+	* shared_info.h (shared_info::initial_heap_size): Change element name
+	to reflect new functionality.
+	* strace.cc (strace::hello): Report on initial heap size.
+
 2002-10-18  Thomas Pfaff  <tpfaff@gmx.net>
 
 	* thread.cc (verifyable_object_isvalid): Test for a valid object

winsup/cygwin/fork.cc

@@ -280,14 +280,14 @@ fork_child (HANDLE& hParent, dll *&first_dll, bool& load_dlls)
   cygheap->fdtab.fixup_after_fork (hParent);
   ProtectHandleINH (hParent);
 
+  if (fixup_mmaps_after_fork (hParent))
+    api_fatal ("recreate_mmaps_after_fork_failed");
+
   pinfo_fixup_after_fork ();
   signal_fixup_after_fork ();
 
   MALLOC_CHECK;
 
-  if (fixup_mmaps_after_fork (hParent))
-    api_fatal ("recreate_mmaps_after_fork_failed");
-
   /* If we haven't dynamically loaded any dlls, just signal
      the parent.  Otherwise, load all the dlls, tell the parent
       that we're done, and wait for the parent to fill in the.

winsup/cygwin/shared.cc

@@ -223,7 +223,8 @@ memory_init ()
 unsigned
 shared_info::heap_chunk_size ()
 {
-  if (!heap_chunk_in_mb)
+  unsigned val;
+  if (!initial_heap_size)
     {
       /* Fetch misc. registry entries.  */
 
@@ -234,13 +235,20 @@ shared_info::heap_chunk_size ()
       /* FIXME: We should not be restricted to a fixed size heap no matter
       what the fixed size is. */
 
-      heap_chunk_in_mb = reg.get_int ("heap_chunk_in_mb", 256);
-      if (heap_chunk_in_mb < 4)
-	{
-	  heap_chunk_in_mb = 4;
-	  reg.set_int ("heap_chunk_in_mb", heap_chunk_in_mb);
-	}
+      initial_heap_size = reg.get_int ("heap_chunk_in_mb", 0);
+      if (!initial_heap_size) {
+	reg_key r1 (HKEY_LOCAL_MACHINE, KEY_READ, "SOFTWARE",
+		    CYGWIN_INFO_CYGNUS_REGISTRY_NAME,
+		    CYGWIN_INFO_CYGWIN_REGISTRY_NAME, NULL);
+        initial_heap_size = reg.get_int ("heap_chunk_in_mb", 384);
+      }
+
+      if (initial_heap_size < 4)
+	initial_heap_size = 4 * 1024 * 1024;
+      else
+	initial_heap_size <<= 20;
+      debug_printf ("fixed heap size is %u", initial_heap_size);
     }
 
-  return heap_chunk_in_mb << 20;
+  return initial_heap_size;
 }

winsup/cygwin/shared_info.h

@@ -138,7 +138,7 @@ public:
 
 #define SHARED_INFO_CB 47112
 
-#define CURR_SHARED_MAGIC 0x29eb8ccdU
+#define CURR_SHARED_MAGIC 0xd9e0bc22U
 
 /* NOTE: Do not make gratuitous changes to the names or organization of the
    below class.  The layout is checksummed to determine compatibility between
@@ -148,7 +148,7 @@ class shared_info
   DWORD version;
   DWORD cb;
  public:
-  int heap_chunk_in_mb;
+  unsigned initial_heap_size;
   DWORD sys_mount_table_counter;
 
   tty_list tty;

winsup/cygwin/strace.cc

@@ -19,6 +19,7 @@ details. */
 #include "cygwin_version.h"
 #include "hires.h"
 #include "cygthread.h"
+#include "shared_info.h"
 
 #define PROTECT(x) x[sizeof (x)-1] = 0
 #define CHECK(x) if (x[sizeof (x)-1] != 0) { small_printf ("array bound exceeded %d\n", __LINE__); ExitProcess (1); }
@@ -57,6 +58,7 @@ strace::hello ()
 	     cygwin_version.api_major, cygwin_version.api_minor);
       prntf (1, NULL, "DLL build:    %s", cygwin_version.dll_build_date);
       prntf (1, NULL, "OS version:   Windows %s", wincap.osname ());
+      prntf (1, NULL, "Heap size:    %u", cygwin_shared->heap_chunk_size ());
       prntf (1, NULL, "**********************************************");
     }
 }