Port unload_uitest.cc and enable some of the tests on linux....

base/process_util_posix.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <sys/resource.h>
 #include <sys/time.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 
 #include <limits>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/platform_thread.h"
 #include "base/process_util.h"
 #include "base/scoped_ptr.h"
 #include "base/sys_info.h"
 #include "base/time.h"
+#include "base/waitable_event.h"
 
 const int kMicrosecondsPerSecond = 1000000;
 
 namespace base {
 
 ProcessId GetCurrentProcId() {
   return getpid();
 }
 
 ProcessHandle GetCurrentProcessHandle() {
@@ skipping 165 matching lines @@
   // affect other parts of the application and would be difficult to debug.
   //
   // Our strategy is to call waitpid() once up front to check if the process
   // has already exited, otherwise to loop for wait_milliseconds, sleeping for
   // at most 0.25 secs each time using usleep() and then calling waitpid().
   //
   // usleep() is speced to exit if a signal is received for which a handler
   // has been installed.  This means that when a SIGCHLD is sent, it will exit
   // depending on behavior external to this function.
   //
-  // This function is used primarilly for unit tests, if we want to use it in
+  // This function is used primarily for unit tests, if we want to use it in
   // the application itself it would probably be best to examine other routes.
   int status = -1;
   pid_t ret_pid = waitpid(handle, &status, WNOHANG);
   static const int64 kQuarterSecondInMicroseconds = kMicrosecondsPerSecond/4;
 
   // If the process hasn't exited yet, then sleep and try again.
   Time wakeup_time = Time::Now() + TimeDelta::FromMilliseconds(
       wait_milliseconds);
   while (ret_pid == 0) {
     Time now = Time::Now();
@@ skipping 15 matching lines @@
   if (success)
     *success = (ret_pid != -1);
 
   return status;
 }
 
 }  // namespace
 
 bool WaitForSingleProcess(ProcessHandle handle, int wait_milliseconds) {
   bool waitpid_success;
-  int status = WaitpidWithTimeout(handle, wait_milliseconds, &waitpid_success);
+  int status;
+  if (wait_milliseconds == base::kNoTimeout)
+    waitpid_success = (waitpid(handle, &status, 0) != -1);
+  else
+    status = WaitpidWithTimeout(handle, wait_milliseconds, &waitpid_success);
   if (status != -1) {
     DCHECK(waitpid_success);
     return WIFEXITED(status);
   } else {
     return false;
   }
 }
 
 bool CrashAwareSleep(ProcessHandle handle, int wait_milliseconds) {
   bool waitpid_success;
@@ skipping 179 matching lines @@
                       const ProcessFilter* filter) {
   bool exited_cleanly =
       WaitForProcessesToExit(executable_name, wait_milliseconds,
                            filter);
   if (!exited_cleanly)
     KillProcesses(executable_name, exit_code, filter);
   return exited_cleanly;
 }
 
 }  // namespace base