The Tor Browser: ipc/chromium/src/chrome/common/mach_message_source

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // Copyright (c) 2008 The Chromium Authors. All rights reserved.

     2 // Use of this source code is governed by a BSD-style license that can be

     3 // found in the LICENSE file.

     5 #include "chrome/common/mach_message_source_mac.h"

     7 #include "base/logging.h"

     9 MachMessageSource::MachMessageSource(mach_port_t port,

    10                                      MachPortListener* msg_listener,

    11                                      bool* success) {

    12   DCHECK(msg_listener);

    13   DCHECK(success);

    14   DCHECK(port != MACH_PORT_NULL);

    16   CFMachPortContext port_context = {0};

    17   port_context.info = msg_listener;

    19   scoped_cftyperef<CFMachPortRef> cf_mach_port_ref(

    20      CFMachPortCreateWithPort(kCFAllocatorDefault,

    21                               port,

    22                               MachMessageSource::OnReceiveMachMessage,

    23                               &port_context,

    24                               NULL));

    26   if (cf_mach_port_ref.get() == NULL) {

    27    CHROMIUM_LOG(WARNING) << "CFMachPortCreate failed";

    28    *success = false;

    29    return;

    30   }

    32   // Create a RL source.

    33   machport_runloop_ref_.reset(

    34      CFMachPortCreateRunLoopSource(kCFAllocatorDefault,

    35                                    cf_mach_port_ref.get(),

    36                                    0));

    38   if (machport_runloop_ref_.get() == NULL) {

    39    CHROMIUM_LOG(WARNING) << "CFMachPortCreateRunLoopSource failed";

    40    *success = false;

    41    return;

    42   }

    44   CFRunLoopAddSource(CFRunLoopGetCurrent(),

    45                     machport_runloop_ref_.get(),

    46                     kCFRunLoopCommonModes);

    47   *success = true;

    48 }

    50 MachMessageSource::~MachMessageSource() {

    51   CFRunLoopRemoveSource(CFRunLoopGetCurrent(),

    52                         machport_runloop_ref_.get(),

    53                         kCFRunLoopCommonModes);

    54 }

    56 // static

    57 void MachMessageSource::OnReceiveMachMessage(CFMachPortRef port, void* msg,

    58                                              CFIndex size, void* closure) {

    59   MachPortListener *msg_listener = static_cast<MachPortListener*>(closure);

    60   size_t msg_size = (size < 0) ? 0 : static_cast<size_t>(size);

    61   DCHECK(msg && msg_size > 0);  // this should never happen!

    63   if (msg_listener && msg && msg_size > 0) {

    64     msg_listener->OnMachMessageReceived(msg, msg_size);

    65   }

    66 }

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