Whitespace only, in rts/win32/OSMem.c

[ghc-hetmet.git] / rts / win32 / OSMem.c

diff --git a/rts/win32/OSMem.c b/rts/win32/OSMem.c
index 4edb5bf..99c8b11 100644 (file)
--- a/rts/win32/OSMem.c
+++ b/rts/win32/OSMem.c
@@ -7,9 +7,8 @@
  * ---------------------------------------------------------------------------*/
 
 #include "Rts.h"
-#include "OSMem.h"
+#include "sm/OSMem.h"
 #include "RtsUtils.h"
-#include "RtsMessages.h"
 
 #if HAVE_WINDOWS_H
 #include <windows.h>
@@ -46,7 +45,7 @@ allocNew(nat n) {
     alloc_rec* rec;
     rec = (alloc_rec*)stgMallocBytes(sizeof(alloc_rec),"getMBlocks: allocNew");
     rec->size = (n+1)*MBLOCK_SIZE;
-    rec->base = 
+    rec->base =
         VirtualAlloc(NULL, rec->size, MEM_RESERVE, PAGE_READWRITE);
     if(rec->base==0) {
         stgFree((void*)rec);
@@ -59,8 +58,8 @@ allocNew(nat n) {
                 "getMBlocks: VirtualAlloc MEM_RESERVE %d blocks failed", n);
         }
     } else {
-               alloc_rec temp;
-               temp.base=0; temp.size=0; temp.next=allocs;
+        alloc_rec temp;
+        temp.base=0; temp.size=0; temp.next=allocs;
 
         alloc_rec* it;
         it=&temp;
@@ -68,7 +67,7 @@ allocNew(nat n) {
         rec->next=it->next;
         it->next=rec;
 
-               allocs=temp.next;
+        allocs=temp.next;
     }
     return rec;
 }
@@ -169,8 +168,8 @@ commitBlocks(char* base, int size) {
         temp = VirtualAlloc(base, size_delta, MEM_COMMIT, PAGE_READWRITE);
         if(temp==0) {
             sysErrorBelch("getMBlocks: VirtualAlloc MEM_COMMIT failed");
-           stg_exit(EXIT_FAILURE);
-       }
+            stg_exit(EXIT_FAILURE);
+        }
         size-=size_delta;
         base+=size_delta;
     }
@@ -184,12 +183,12 @@ osGetMBlocks(nat n) {
         alloc_rec* alloc;
         alloc = allocNew(n);
         /* We already belch in allocNew if it fails */
-       if (alloc == 0) {
-           stg_exit(EXIT_FAILURE);
-       } else {
+        if (alloc == 0) {
+            stg_exit(EXIT_FAILURE);
+        } else {
             insertFree(alloc->base, alloc->size);
             ret = findFreeBlocks(n);
-       }
+        }
     }
 
     if(ret!=0) {
@@ -204,6 +203,42 @@ osGetMBlocks(nat n) {
     return ret;
 }
 
+void osFreeMBlocks(char *addr, nat n)
+{
+    alloc_rec *p;
+    lnat nBytes = (lnat)n * MBLOCK_SIZE;
+
+    insertFree(addr, nBytes);
+
+    p = allocs;
+    while ((p != NULL) && (addr >= (p->base + p->size))) {
+        p = p->next;
+    }
+    while (nBytes > 0) {
+        if ((p == NULL) || (p->base > addr)) {
+            errorBelch("Memory to be freed isn't allocated\n");
+            stg_exit(EXIT_FAILURE);
+        }
+        if (p->base + p->size >= addr + nBytes) {
+            if (!VirtualFree(addr, nBytes, MEM_DECOMMIT)) {
+                sysErrorBelch("osFreeMBlocks: VirtualFree MEM_DECOMMIT failed");
+                stg_exit(EXIT_FAILURE);
+            }
+            nBytes = 0;
+        }
+        else {
+            lnat bytesToFree = p->base + p->size - addr;
+            if (!VirtualFree(addr, bytesToFree, MEM_DECOMMIT)) {
+                sysErrorBelch("osFreeMBlocks: VirtualFree MEM_DECOMMIT failed");
+                stg_exit(EXIT_FAILURE);
+            }
+            addr += bytesToFree;
+            nBytes -= bytesToFree;
+            p = p->next;
+        }
+    }
+}
+
 void
 osFreeAllMBlocks(void)
 {
@@ -226,7 +261,7 @@ osFreeAllMBlocks(void)
         for(; it!=0; ) {
             if(!VirtualFree((void*)it->base, 0, MEM_RELEASE)) {
                 sysErrorBelch("freeAllMBlocks: VirtualFree MEM_RELEASE failed");
-               stg_exit(EXIT_FAILURE);
+                stg_exit(EXIT_FAILURE);
             }
             next = it->next;
             stgFree(it);
@@ -239,23 +274,23 @@ lnat getPageSize (void)
 {
     static lnat pagesize = 0;
     if (pagesize) {
-       return pagesize;
+        return pagesize;
     } else {
-       SYSTEM_INFO sSysInfo;
-       GetSystemInfo(&sSysInfo);
-       pagesize = sSysInfo.dwPageSize;
-       return pagesize;
+        SYSTEM_INFO sSysInfo;
+        GetSystemInfo(&sSysInfo);
+        pagesize = sSysInfo.dwPageSize;
+        return pagesize;
     }
 }
 
 void setExecutable (void *p, lnat len, rtsBool exec)
 {
     DWORD dwOldProtect = 0;
-    if (VirtualProtect (p, len, 
-                       exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE, 
-                       &dwOldProtect) == 0)
+    if (VirtualProtect (p, len,
+                        exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE,
+                        &dwOldProtect) == 0)
     {
-       sysErrorBelch("setExecutable: failed to protect 0x%p; old protection: %lu\n",
+        sysErrorBelch("setExecutable: failed to protect 0x%p; old protection: %lu\n",
                       p, (unsigned long)dwOldProtect);
         stg_exit(EXIT_FAILURE);
     }