summaryrefslogtreecommitdiffstats
path: root/ipc/glue/SharedMemory_posix.cpp
diff options
context:
space:
mode:
authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /ipc/glue/SharedMemory_posix.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloadUXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip
Add m-esr52 at 52.6.0
Diffstat (limited to 'ipc/glue/SharedMemory_posix.cpp')
-rw-r--r--ipc/glue/SharedMemory_posix.cpp37
1 files changed, 37 insertions, 0 deletions
diff --git a/ipc/glue/SharedMemory_posix.cpp b/ipc/glue/SharedMemory_posix.cpp
new file mode 100644
index 000000000..ca7833ce0
--- /dev/null
+++ b/ipc/glue/SharedMemory_posix.cpp
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <sys/mman.h> // mprotect
+#include <unistd.h> // sysconf
+
+#include "mozilla/ipc/SharedMemory.h"
+
+namespace mozilla {
+namespace ipc {
+
+void
+SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights)
+{
+ int flags = 0;
+ if (aRights & RightsRead)
+ flags |= PROT_READ;
+ if (aRights & RightsWrite)
+ flags |= PROT_WRITE;
+ if (RightsNone == aRights)
+ flags = PROT_NONE;
+
+ if (0 < mprotect(aAddr, aSize, flags))
+ NS_RUNTIMEABORT("can't mprotect()");
+}
+
+size_t
+SharedMemory::SystemPageSize()
+{
+ return sysconf(_SC_PAGESIZE);
+}
+
+} // namespace ipc
+} // namespace mozilla