diff --git a/MagickCore/quantize.c b/MagickCore/quantize.c
index b52dbec..09b8e48 100644
--- a/MagickCore/quantize.c
+++ b/MagickCore/quantize.c
@@ -197,6 +197,7 @@
#include "MagickCore/quantize.h"
#include "MagickCore/quantum.h"
#include "MagickCore/quantum-private.h"
+#include "MagickCore/resource_.h"
#include "MagickCore/string_.h"
#include "MagickCore/thread-private.h"
@@ -541,7 +542,9 @@
status=MagickTrue;
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,4) shared(status)
+ #pragma omp parallel for schedule(static,4) shared(status) \
+ if ((image->rows*image->columns) > 8192) \
+ num_threads(GetMagickResourceLimit(ThreadResource))
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
@@ -1417,7 +1420,7 @@
i;
assert(pixels != (RealPixelInfo **) NULL);
- for (i=0; i < (ssize_t) GetOpenMPMaximumThreads(); i++)
+ for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
if (pixels[i] != (RealPixelInfo *) NULL)
pixels[i]=(RealPixelInfo *) RelinquishMagickMemory(pixels[i]);
pixels=(RealPixelInfo **) RelinquishMagickMemory(pixels);
@@ -1435,7 +1438,7 @@
size_t
number_threads;
- number_threads=GetOpenMPMaximumThreads();
+ number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
pixels=(RealPixelInfo **) AcquireQuantumMemory(number_threads,
sizeof(*pixels));
if (pixels == (RealPixelInfo **) NULL)
@@ -2377,7 +2380,9 @@
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (image->storage_class == PseudoClass)
#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,4) shared(progress,status)
+ #pragma omp parallel for schedule(static,4) shared(progress,status) \
+ if (image->colors > 256) \
+ num_threads(GetMagickResourceLimit(ThreadResource))
#endif
for (i=0; i < (ssize_t) image->colors; i++)
{
@@ -2404,7 +2409,9 @@
progress=0;
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,4) shared(progress,status)
+ #pragma omp parallel for schedule(static,4) shared(progress,status) \
+ if ((image->rows*image->columns) > 8192) \
+ num_threads(GetMagickResourceLimit(ThreadResource))
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
@@ -3300,7 +3307,9 @@
status=MagickTrue;
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,4) shared(status)
+ #pragma omp parallel for schedule(static,4) shared(status) \
+ if ((image->rows*image->columns) > 8192) \
+ num_threads(GetMagickResourceLimit(ThreadResource))
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
@@ -3328,7 +3337,7 @@
if (colormap_index[intensity] < 0)
{
#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp critical (MagickCore_SetGrayscaleImage)
+ #pragma omp critical (MagickCore_SetGrayscaleImage)
#endif
if (colormap_index[intensity] < 0)
{
@@ -3377,7 +3386,9 @@
status=MagickTrue;
image_view=AcquireAuthenticCacheView(image,exception);
#if defined(MAGICKCORE_OPENMP_SUPPORT)
- #pragma omp parallel for schedule(static,4) shared(status)
+ #pragma omp parallel for schedule(static,4) shared(status) \
+ if ((image->rows*image->columns) > 8192) \
+ num_threads(GetMagickResourceLimit(ThreadResource))
#endif
for (y=0; y < (ssize_t) image->rows; y++)
{
