Implement CrashGeneration{Client,Server} for OOP dump generation on OS X, enable OOP dump generation in ExceptionHandler

R=mark at http://breakpad.appspot.com/146001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@646 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/common/mac/MachIPC.h

@@ -255,11 +255,11 @@ class MachSendMessage : public MachMessage {
 class ReceivePort {
  public:
   // Creates a new mach port for receiving messages and registers a name for it
-  ReceivePort(const char *receive_port_name);
+  explicit ReceivePort(const char *receive_port_name);
 
   // Given an already existing mach port, use it.  We take ownership of the
   // port and deallocate it in our destructor.
-  ReceivePort(mach_port_t receive_port);
+  explicit ReceivePort(mach_port_t receive_port);
 
   // Create a new mach port for receiving messages
   ReceivePort();
@@ -285,11 +285,11 @@ class ReceivePort {
 class MachPortSender {
  public:
   // get a port with send rights corresponding to a named registered service
-  MachPortSender(const char *receive_port_name);
+  explicit MachPortSender(const char *receive_port_name);
 
 
   // Given an already existing mach port, use it.
-  MachPortSender(mach_port_t send_port);
+  explicit MachPortSender(mach_port_t send_port);
 
   kern_return_t SendMessage(MachSendMessage &message,
                             mach_msg_timeout_t timeout);

src/common/mac/MachIPC.mm

@@ -240,8 +240,11 @@ kern_return_t ReceivePort::WaitForMessage(MachReceiveMessage *out_message,
   out_message->head.msgh_reserved = 0;
   out_message->head.msgh_id = 0;
 
+  mach_msg_option_t options = MACH_RCV_MSG;
+  if (timeout != MACH_MSG_TIMEOUT_NONE)
+    options |= MACH_RCV_TIMEOUT;
   kern_return_t result = mach_msg(&out_message->head,
-                                  MACH_RCV_MSG | MACH_RCV_TIMEOUT,
+                                  options,
                                   0,
                                   sizeof(MachMessage),
                                   port_,

src/common/mac/scoped_task_suspend-inl.h

@@ -0,0 +1,56 @@
+// Copyright (c) 2010 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Inline implementation of ScopedTaskSuspend, which suspends a Mach
+// task for the duration of its scope.
+
+#ifndef GOOGLE_BREAKPAD_COMMON_MAC_SCOPED_TASK_SUSPEND_H_
+#define GOOGLE_BREAKPAD_COMMON_MAC_SCOPED_TASK_SUSPEND_H_
+
+#include <mach/mach.h>
+
+namespace google_breakpad {
+
+class ScopedTaskSuspend {
+ public:
+  explicit ScopedTaskSuspend(mach_port_t target) : target_(target) {
+    task_suspend(target_);
+  }
+
+  ~ScopedTaskSuspend() {
+    task_resume(target_);
+  }
+
+ private:
+  mach_port_t target_;
+};
+
+}  // namespace google_breakpad
+
+#endif  // GOOGLE_BREAKPAD_COMMON_MAC_SCOPED_TASK_SUSPEND_H_