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9c6c509a4f
The old code was using non-Unicode C strings. This patch updates this to use Unicode strings to handle paths. Differential Revision: https://phabricator.services.mozilla.com/D85013
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/devtools/AutoMemMap.h"
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#include "mozilla/Unused.h"
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#include "nsDebug.h"
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namespace mozilla {
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namespace devtools {
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AutoMemMap::~AutoMemMap() {
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if (addr) {
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Unused << NS_WARN_IF(PR_MemUnmap(addr, size()) != PR_SUCCESS);
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addr = nullptr;
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}
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if (fileMap) {
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Unused << NS_WARN_IF(PR_CloseFileMap(fileMap) != PR_SUCCESS);
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fileMap = nullptr;
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}
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if (fd) {
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Unused << NS_WARN_IF(PR_Close(fd) != PR_SUCCESS);
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fd = nullptr;
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}
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}
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nsresult AutoMemMap::init(nsIFile* file, int flags, int mode,
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PRFileMapProtect prot) {
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MOZ_ASSERT(!fd);
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MOZ_ASSERT(!fileMap);
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MOZ_ASSERT(!addr);
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nsresult rv;
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int64_t inputFileSize;
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rv = file->GetFileSize(&inputFileSize);
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if (NS_FAILED(rv)) {
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return rv;
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}
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// Check if the file is too big to memmap.
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if (inputFileSize > int64_t(UINT32_MAX)) {
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return NS_ERROR_INVALID_ARG;
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}
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fileSize = uint32_t(inputFileSize);
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rv = file->OpenNSPRFileDesc(flags, mode, &fd);
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (!fd) return NS_ERROR_UNEXPECTED;
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fileMap = PR_CreateFileMap(fd, inputFileSize, prot);
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if (!fileMap) return NS_ERROR_UNEXPECTED;
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addr = PR_MemMap(fileMap, 0, fileSize);
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if (!addr) return NS_ERROR_UNEXPECTED;
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return NS_OK;
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}
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} // namespace devtools
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} // namespace mozilla
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