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--- base/process/process_posix.cc.orig 2015-10-14 03:01:18.000000000 -0400
+++ base/process/process_posix.cc 2015-10-23 11:23:26.411838000 -0400
@@ -17,8 +17,18 @@
#include <sys/event.h>
#endif
+#if defined(OS_BSD)
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#endif
+
namespace {
+const int kBackgroundPriority = 5;
+const int kForegroundPriority = 0;
+
#if !defined(OS_NACL_NONSFI)
bool WaitpidWithTimeout(base::ProcessHandle handle,
@@ -83,7 +93,7 @@
return ret_pid > 0;
}
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) || defined(OS_BSD)
// Using kqueue on Mac so that we can wait on non-child processes.
// We can't use kqueues on child processes because we need to reap
// our own children using wait.
@@ -180,7 +190,7 @@
base::ProcessHandle parent_pid = base::GetParentProcessId(handle);
base::ProcessHandle our_pid = base::GetCurrentProcessHandle();
if (parent_pid != our_pid) {
-#if defined(OS_MACOSX)
+#if defined(OS_MACOSX) || defined(OS_BSD)
// On Mac we can wait on non child processes.
return WaitForSingleNonChildProcess(handle, timeout);
#else
@@ -258,7 +268,11 @@
#if !defined(OS_LINUX)
// static
bool Process::CanBackgroundProcesses() {
+#if defined(OS_BSD)
+ return true;
+#else
return false;
+#endif
}
#endif // !defined(OS_LINUX)
@@ -358,17 +372,21 @@
#if !defined(OS_LINUX)
bool Process::IsProcessBackgrounded() const {
- // See SetProcessBackgrounded().
DCHECK(IsValid());
- return false;
+ return GetPriority() == kBackgroundPriority;
}
bool Process::SetProcessBackgrounded(bool value) {
- // Not implemented for POSIX systems other than Linux. With POSIX, if we were
- // to lower the process priority we wouldn't be able to raise it back to its
- // initial priority.
- NOTIMPLEMENTED();
- return false;
+ DCHECK(IsValid());
+
+ if (!CanBackgroundProcesses())
+ return false;
+
+ int priority = value ? kBackgroundPriority : kForegroundPriority;
+ int result = setpriority(PRIO_PROCESS, process_, priority);
+
+ DPCHECK(result == 0);
+ return result == 0;
}
#endif // !defined(OS_LINUX)
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