mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
eb69e55005
This has a few semi-interdependent pieces: * Factoring out the file opening/closing/renaming from the GC/CC logging. * Using IPC to have the child log to files that the parent opened. * Changing nsIMemoryInfoDumper.dumpGCAndCCLogsToFile to report completion of child process logging (which was impossible before this, and which is needed to have a meaningful test case). * Changing about:memory to dump logs for child processes, matching the behavior of the "Measure" button, because it can tell the user where they are now. * Add a test for multiprocess GC/CC log dumping (only of the XPCOM interface, not by clicking buttons and scraping the about:memory page, but done as a chrome mochitest to start remote browsers); based on test_memoryReporters2.xul in the same directory.
137 lines
2.8 KiB
C++
137 lines
2.8 KiB
C++
/* 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 "FileDescriptorUtils.h"
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#include "nsIEventTarget.h"
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#include "nsCOMPtr.h"
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#include "nsDebug.h"
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#include "nsNetCID.h"
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#include "nsServiceManagerUtils.h"
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#include "nsThreadUtils.h"
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#include "prio.h"
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#include "private/pprio.h"
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#include <errno.h>
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#ifdef XP_WIN
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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using mozilla::ipc::CloseFileRunnable;
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#ifdef DEBUG
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CloseFileRunnable::CloseFileRunnable(const FileDescriptor& aFileDescriptor)
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: mFileDescriptor(aFileDescriptor)
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{
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MOZ_ASSERT(aFileDescriptor.IsValid());
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}
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#endif // DEBUG
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CloseFileRunnable::~CloseFileRunnable()
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{
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if (mFileDescriptor.IsValid()) {
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// It's probably safer to take the main thread IO hit here rather than leak
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// the file descriptor.
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CloseFile();
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}
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}
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NS_IMPL_ISUPPORTS(CloseFileRunnable, nsIRunnable)
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void
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CloseFileRunnable::Dispatch()
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{
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nsCOMPtr<nsIEventTarget> eventTarget =
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do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
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NS_ENSURE_TRUE_VOID(eventTarget);
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nsresult rv = eventTarget->Dispatch(this, NS_DISPATCH_NORMAL);
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NS_ENSURE_SUCCESS_VOID(rv);
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}
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void
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CloseFileRunnable::CloseFile()
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{
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// It's possible for this to happen on the main thread if the dispatch to the
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// stream service fails so we can't assert the thread on which we're running.
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MOZ_ASSERT(mFileDescriptor.IsValid());
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PRFileDesc* fd =
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PR_ImportFile(PROsfd(mFileDescriptor.PlatformHandle()));
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NS_WARN_IF_FALSE(fd, "Failed to import file handle!");
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mFileDescriptor = FileDescriptor();
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if (fd) {
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PR_Close(fd);
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fd = nullptr;
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}
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}
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NS_IMETHODIMP
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CloseFileRunnable::Run()
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{
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MOZ_ASSERT(!NS_IsMainThread());
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CloseFile();
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return NS_OK;
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}
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namespace mozilla {
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namespace ipc {
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FILE*
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FileDescriptorToFILE(const FileDescriptor& aDesc,
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const char* aOpenMode)
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{
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if (!aDesc.IsValid()) {
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errno = EBADF;
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return nullptr;
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}
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FileDescriptor::PlatformHandleType handle = aDesc.PlatformHandle();
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#ifdef XP_WIN
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int fd = _open_osfhandle(reinterpret_cast<intptr_t>(handle), 0);
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if (fd == -1) {
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CloseHandle(handle);
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return nullptr;
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}
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#else
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int fd = handle;
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#endif
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FILE* file = fdopen(fd, aOpenMode);
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if (!file) {
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int saved_errno = errno;
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close(fd);
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errno = saved_errno;
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}
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return file;
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}
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FileDescriptor
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FILEToFileDescriptor(FILE* aStream)
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{
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if (!aStream) {
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errno = EBADF;
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return FileDescriptor();
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}
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#ifdef XP_WIN
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int fd = _fileno(aStream);
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if (fd == -1) {
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return FileDescriptor();
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}
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return FileDescriptor(reinterpret_cast<HANDLE>(_get_osfhandle(fd)));
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#else
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return FileDescriptor(fileno(aStream));
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#endif
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}
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} // namespace ipc
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} // namespace mozilla
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