From: Ben Gras <ben@minix3.org>
Date: Tue, 16 Aug 2005 11:37:33 +0000 (+0000)
Subject: Al's patch sent mon 15 aug.
X-Git-Tag: v3.1.0~326
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/soc.html?a=commitdiff_plain;h=b4d4450d2dcdd03662456ff559df591e5ee84b8c;p=minix.git

Al's patch sent mon 15 aug.
---

diff --git a/servers/pm/main.c b/servers/pm/main.c
index d4e83baa0..2634843e7 100644
--- 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)