From f47493fa352d9c0ae7e10490c89f380195a283fc Mon Sep 17 00:00:00 2001
From: root <root>
Date: Sun, 21 Sep 2008 00:23:45 +0000
Subject: *** empty log message ***

---
 eio.c | 45 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 43 insertions(+), 2 deletions(-)

(limited to 'eio.c')

diff --git a/eio.c b/eio.c
index 725de8e..61456e2 100644
--- a/eio.c
+++ b/eio.c
@@ -952,6 +952,35 @@ eio__scandir (eio_req *req, etp_worker *self)
   req->result = res;
 }
 
+#if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO)
+# define msync(a,b,c) ENOSYS
+#endif
+
+int
+eio__mtouch (void *mem, size_t len, int flags)
+{
+  intptr_t addr = (intptr_t)mem;
+  intptr_t end = addr + len;
+#ifdef PAGESIZE
+  const intptr_t page = PAGESIZE;
+#else
+  static intptr_t page;
+
+  if (!page)
+    page = sysconf (_SC_PAGESIZE);
+#endif
+
+  addr &= ~(page - 1); /* assume page size is always a power of two */
+
+  if (addr < end)
+    if (flags) /* modify */
+      do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len);
+    else
+      do { *((volatile sig_atomic_t *)addr)     ; } while ((addr += page) < len);
+
+  return 0;
+}
+
 /*****************************************************************************/
 
 #define ALLOC(len)				\
@@ -1126,6 +1155,8 @@ static void eio_execute (etp_worker *self, eio_req *req)
       case EIO_SYNC:      req->result = 0; sync (); break;
       case EIO_FSYNC:     req->result = fsync     (req->int1); break;
       case EIO_FDATASYNC: req->result = fdatasync (req->int1); break;
+      case EIO_MSYNC:     req->result = msync (req->ptr2, req->size, req->int1); break;
+      case EIO_MTOUCH:    req->result = eio__mtouch (req->ptr2, req->size, req->int1); break;
 
       case EIO_READDIR:   eio__scandir (req, self); break;
 
@@ -1174,7 +1205,7 @@ static void eio_execute (etp_worker *self, eio_req *req)
         break;
 
       case EIO_CUSTOM:
-        req->feed (req);
+        ((void (*)(eio_req *))req->feed) (req);
         break;
 
       default:
@@ -1207,6 +1238,16 @@ eio_req *eio_fsync (int fd, int pri, eio_cb cb, void *data)
   REQ (EIO_FSYNC); req->int1 = fd; SEND;
 }
 
+eio_req *eio_msync (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
+{
+  REQ (EIO_MSYNC); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
+}
+
+eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data)
+{
+  REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND;
+}
+
 eio_req *eio_fdatasync (int fd, int pri, eio_cb cb, void *data)
 {
   REQ (EIO_FDATASYNC); req->int1 = fd; SEND;
@@ -1371,7 +1412,7 @@ eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb,
 
 eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data)
 {
-  REQ (EIO_CUSTOM); req->feed = execute; SEND;
+  REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND;
 }
 
 #endif
-- 
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