Changeset 651 for trunk/kernel/syscalls/sys_mmap.c

Timestamp:

Nov 14, 2019, 11:50:09 AM (5 years ago)

Author:

alain

Message:

1) Improve the VMM MMAP allocator: implement the "buddy" algorithm
to allocate only aligned blocks.
2) fix a bug in the pthread_join() / pthread_exit() mmechanism.

File:

• trunk/kernel/syscalls/sys_mmap.c (modified) (3 diffs)

trunk/kernel/syscalls/sys_mmap.c

@@ -112 +112 @@
     }
 
-    // FIXME handle Copy_On_Write for MAP_PRIVATE...
+// FIXME handle Copy_On_Write for MAP_PRIVATE...
 
     // test mmap type : can be FILE / ANON / REMOTE
@@ -127 +127 @@
 #endif
 
-            // FIXME: handle concurent delete of file by another thread 
+// FIXME: handle concurent delete of file by another thread 
 
                 if( fdid >= CONFIG_PROCESS_FILE_MAX_NR ) 
@@ -164 +164 @@
 #endif
 
-        // get inode pointer & mapper pointer 
-        vfs_inode_t * inode_ptr  = hal_remote_lpt(XPTR(file_cxy , &file_ptr->inode ));
+        // get mapper pointer 
         mapper_t    * mapper_ptr = hal_remote_lpt(XPTR(file_cxy , &file_ptr->mapper));
 
-        // get file size
-                uint32_t size = hal_remote_l32( XPTR( file_cxy , &inode_ptr->size ) );
-
-#if (DEBUG_SYS_MMAP & 1)
-if ( DEBUG_SYS_MMAP < tm_start )
-printk("\n[%s] thread[%x,%x] get file size : %d bytes\n",
-__FUNCTION__, process->pid, this->trdid, size );
-#endif
-
-        // chek offset and length arguments
-                if( (offset + length) > size)
-                {
-
-#if DEBUG_SYSCALLS_ERROR
-printk("\n[ERROR] in %s: thread[%x,%x] / offset(%d) + len(%d) >= file's size(%d)\n", 
-__FUNCTION__, process->pid, this->trdid, k_attr.offset, k_attr.length, size );
-#endif
-            this->errno = ERANGE;
-            return -1;
-                }
+#if (DEBUG_SYS_MMAP & 1)
+if ( DEBUG_SYS_MMAP < tm_start )
+printk("\n[%s] thread[%x,%x] get file mapper %x\n",
+__FUNCTION__, process->pid, this->trdid, mapper_ptr );
+#endif
 
 /* TODO