Merge pull request #2786 from nnethercote/task_info

Add a `task_info` crate and a `task_basic_info` module within it.

1 files changed, 39 insertions, 0 deletions

diff --git a/src/platform/macos/rust-task_info/task_info.c b/src/platform/macos/rust-task_info/task_info.c
new file mode 100644
index 00000000000..e8f59082609
--- /dev/null
+++ b/src/platform/macos/rust-task_info/task_info.c
@@ -0,0 +1,39 @@
+// Copyright 2013 The Servo Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#include <mach/mach_init.h>
+#include <mach/task.h>
+
+static int
+TaskBasicInfo(struct task_basic_info* info)
+{
+    mach_msg_type_number_t count = TASK_BASIC_INFO_COUNT;
+    kern_return_t kr = task_info(mach_task_self(), TASK_BASIC_INFO,
+                                 (task_info_t)info, &count);
+    return kr == KERN_SUCCESS ? 0 : -1;
+}
+
+int
+TaskBasicInfoVirtualSize(int64_t *virtualSize)
+{
+    struct task_basic_info ti;
+    int rv = TaskBasicInfo(&ti);
+    *virtualSize = (rv == 0) ? ti.virtual_size : 0;
+    return rv;
+}
+
+int
+TaskBasicInfoResidentSize(int64_t *residentSize)
+{
+    struct task_basic_info ti;
+    int rv = TaskBasicInfo(&ti);
+    *residentSize = (rv == 0) ? ti.resident_size : 0;
+    return rv;
+}
+