Al's patch sent mon 15 aug.

diff --git a/servers/pm/main.c b/servers/pm/main.c
index d4e83baa06e8d429c6d2584ad64cb251c3e59093..2634843e7474be554a4fa64d746892991ded5ff2 100644 (file)
--- a/servers/pm/main.c
+++ b/servers/pm/main.c
@@ -136,7 +136,18 @@ int result;                        /* result of call (usually OK or error #) */
  *===========================================================================*/
 PRIVATE void pm_init()
 {
-/* Initialize the process manager. */
+/* Initialize the process manager. 
+ * Memory use info is collected from the boot monitor, the kernel, and
+ * all processes compiled into the system image. Initially this information
+ * is put into an array mem_chunks. Elements of mem_chunks are struct memory,
+ * and hold base, size pairs in units of clicks. This array is small, there
+ * should be no more than 8 chunks. After the array of chunks has been built
+ * the contents are used to initialize the hole list. Space for the hole list
+ * is reserved as an array with twice as many elements as the maximum number
+ * of processes allowed. It is managed as a linked list, and elements of the
+ * array are struct hole, which, in addition to storage for a base and size in 
+ * click units also contain space for a link, a pointer to another element.
+*/
   int key, i, s;
   static struct boot_image image[NR_BOOT_PROCS];
   register struct boot_image *ip;
@@ -171,9 +182,9 @@ PRIVATE void pm_init()
    */
   if ((s=sys_getmonparams(monitor_params, sizeof(monitor_params))) != OK)
       panic(__FILE__,"get monitor params failed",s);
+  get_mem_chunks(mem_chunks);
   if ((s=sys_getkinfo(&kinfo)) != OK)
       panic(__FILE__,"get kernel info failed",s);
-  get_mem_chunks(mem_chunks);
 
   /* Get the memory map of the kernel to see how much memory it uses. */
   if ((s=get_mem_map(SYSTASK, mem_map)) != OK)