From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- mozglue/linker/Mappable.cpp | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 mozglue/linker/Mappable.cpp (limited to 'mozglue/linker/Mappable.cpp') diff --git a/mozglue/linker/Mappable.cpp b/mozglue/linker/Mappable.cpp new file mode 100644 index 0000000000..55a7aadfcc --- /dev/null +++ b/mozglue/linker/Mappable.cpp @@ -0,0 +1,34 @@ +/* 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 +#include + +#include "Mappable.h" + +Mappable* Mappable::Create(const char* path) { + int fd = open(path, O_RDONLY); + if (fd != -1) return new Mappable(fd); + return nullptr; +} + +MemoryRange Mappable::mmap(const void* addr, size_t length, int prot, int flags, + off_t offset) { + MOZ_ASSERT(fd && *fd != -1); + MOZ_ASSERT(!(flags & MAP_SHARED)); + flags |= MAP_PRIVATE; + + return MemoryRange::mmap(const_cast(addr), length, prot, flags, *fd, + offset); +} + +void Mappable::finalize() { + /* Close file ; equivalent to close(fd.forget()) */ + fd.emplace(-1); +} + +size_t Mappable::GetLength() const { + struct stat st; + return fstat(*fd, &st) ? 0 : st.st_size; +} -- cgit v1.2.3