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Issue #1829 - Revert "Issue #1751"

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This commit is contained in:
Brian Smith 2022-04-26 11:34:08 -05:00 • committed by roytam1
commit 13fcc4a046
949 changed files with 95662 additions and 444 deletions
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12
xpcom/glue/nsThreadUtils.cpp
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@ -21,6 +21,8 @@
#include <windows.h>
#include "mozilla/WindowsVersion.h"
using mozilla::IsVistaOrLater;
#elif defined(XP_MACOSX)
#include <sys/resource.h>
#endif
#include <pratom.h>
@ -443,6 +445,12 @@ nsAutoLowPriorityIO::nsAutoLowPriorityIO()
lowIOPrioritySet = IsVistaOrLater() &&
SetThreadPriority(GetCurrentThread(),
THREAD_MODE_BACKGROUND_BEGIN);
#elif defined(XP_MACOSX)
oldPriority = getiopolicy_np(IOPOL_TYPE_DISK, IOPOL_SCOPE_THREAD);
lowIOPrioritySet = oldPriority != -1 &&
setiopolicy_np(IOPOL_TYPE_DISK,
IOPOL_SCOPE_THREAD,
IOPOL_THROTTLE) != -1;
#else
lowIOPrioritySet = false;
#endif
@ -455,5 +463,9 @@ nsAutoLowPriorityIO::~nsAutoLowPriorityIO()
// On Windows the old thread priority is automatically restored
SetThreadPriority(GetCurrentThread(), THREAD_MODE_BACKGROUND_END);
}
#elif defined(XP_MACOSX)
if (MOZ_LIKELY(lowIOPrioritySet)) {
setiopolicy_np(IOPOL_TYPE_DISK, IOPOL_SCOPE_THREAD, oldPriority);
}
#endif
}