% MagickCore Thread Methods %
% %
% Software Design %
-% John Cristy %
+% Cristy %
% March 2003 %
% %
% %
-% Copyright 1999-2011 ImageMagick Studio LLC, a non-profit organization %
+% Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
-% http://www.imagemagick.org/script/license.php %
+% https://www.imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
#include "MagickCore/thread_.h"
#include "MagickCore/thread-private.h"
\f
+/*
+ Typedef declarations.
+*/
+typedef struct _MagickThreadValue
+{
+ size_t
+ number_threads;
+
+ void
+ **values,
+ (*destructor)(void *);
+} MagickThreadValue;
+\f
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
-% M a g i c k C r e a t e T h r e a d K e y %
+% C r e a t e M a g i c k T h r e a d K e y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% MagickCreateThreadKey() creates a thread key and returns it.
+% CreateMagickThreadKey() creates a thread-specific data key visible to all
+% threads in the process.
+%
+% The format of the CreateMagickThreadKey method is:
%
-% The format of the MagickCreateThreadKey method is:
+% MagickThreadKey CreateMagickThreadKey(MagickThreadKey *key)
+%
+% A description of each parameter follows:
%
-% MagickThreadKey MagickCreateThreadKey(MagickThreadKey *key)
+% o key: opaque objects used to locate thread-specific data.
+%
+% o destructor: associate an optional destructor with each key value.
%
*/
-MagickExport MagickBooleanType MagickCreateThreadKey(MagickThreadKey *key)
+MagickExport MagickBooleanType CreateMagickThreadKey(MagickThreadKey *key,
+ void (*destructor)(void *))
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
- return(pthread_key_create(key,NULL) == 0 ? MagickTrue : MagickFalse);
-#elif defined(MAGICKCORE_HAVE_WINTHREADS)
+ return(pthread_key_create(key,destructor) == 0 ? MagickTrue : MagickFalse);
+#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
+ magick_unreferenced(destructor);
*key=TlsAlloc();
return(*key != TLS_OUT_OF_INDEXES ? MagickTrue : MagickFalse);
#else
- *key=AcquireMagickMemory(sizeof(key));
- return(*key != (void *) NULL ? MagickTrue : MagickFalse);
+ {
+ MagickThreadValue
+ **keys;
+
+ keys=(MagickThreadValue **) key;
+ *keys=(MagickThreadValue *) AcquireQuantumMemory(1,sizeof(**keys));
+ if (*keys != (MagickThreadValue *) NULL)
+ {
+ (*keys)->number_threads=GetOpenMPMaximumThreads();
+ (*keys)->values=AcquireQuantumMemory((*keys)->number_threads,
+ sizeof(void *));
+ if ((*keys)->values == (void *) NULL)
+ *keys=RelinquishMagickMemory(*keys);
+ else
+ (void) memset((*keys)->values,0,(*keys)->number_threads*
+ sizeof(void *));
+ (*keys)->destructor=destructor;
+ }
+ return((*keys != (MagickThreadValue *) NULL) ? MagickTrue : MagickFalse);
+ }
#endif
}
\f
% %
% %
% %
-% M a g i c k D e l e t e T h r e a d K e y %
+% D e l e t e M a g i c k T h r e a d K e y %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% MagickDeleteThreadKey() deletes a thread key.
+% DeleteMagickThreadKey() deletes a thread-specific data key.
%
-% The format of the AcquireAESInfo method is:
+% The format of the DeleteMagickThreadKey method is:
%
-% MagickBooleanType MagickDeleteThreadKey(MagickThreadKey key)
+% MagickBooleanType DeleteMagickThreadKey(MagickThreadKey key)
%
% A description of each parameter follows:
%
% o key: the thread key.
%
*/
-MagickExport MagickBooleanType MagickDeleteThreadKey(MagickThreadKey key)
+MagickExport MagickBooleanType DeleteMagickThreadKey(MagickThreadKey key)
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
return(pthread_key_delete(key) == 0 ? MagickTrue : MagickFalse);
-#elif defined(MAGICKCORE_HAVE_WINTHREADS)
+#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
return(TlsFree(key) != 0 ? MagickTrue : MagickFalse);
#else
- key=(MagickThreadKey) RelinquishMagickMemory(key);
+ {
+ MagickThreadValue
+ *keys;
+
+ register ssize_t
+ i;
+
+ keys=(MagickThreadValue *) key;
+ for (i=0; i < (ssize_t) keys->number_threads; i++)
+ if ((keys->destructor != (void *) NULL) &&
+ (keys->values[i] != (void *) NULL))
+ {
+ keys->destructor(keys->values[i]);
+ keys->values[i]=(void *) NULL;
+ }
+ keys=(MagickThreadValue *) RelinquishMagickMemory(keys);
+ }
return(MagickTrue);
#endif
-
}
\f
/*
% %
% %
% %
-% M a g i c k G e t T h r e a d V a l u e %
+% G e t M a g i c k T h r e a d V a l u e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% MagickGetThreadValue() returns a value associated with the thread key.
+% GetMagickThreadValue() returns the value currently bound to the specified
+% key on behalf of the calling thread.
%
-% The format of the MagickGetThreadValue method is:
+% The format of the GetMagickThreadValue method is:
%
-% void *MagickGetThreadValue(MagickThreadKey key)
+% void *GetMagickThreadValue(MagickThreadKey key)
%
% A description of each parameter follows:
%
% o key: the thread key.
%
*/
-MagickExport void *MagickGetThreadValue(MagickThreadKey key)
+MagickExport void *GetMagickThreadValue(MagickThreadKey key)
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
return(pthread_getspecific(key));
-#elif defined(MAGICKCORE_HAVE_WINTHREADS)
+#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
return(TlsGetValue(key));
#else
- return((void *) (*key));
+ {
+ MagickThreadValue
+ *keys;
+
+ keys=(MagickThreadValue *) key;
+ return(keys->values[GetOpenMPThreadId()]);
+ }
#endif
}
\f
% %
% %
% %
-% M a g i c k S e t T h r e a d V a l u e %
+% S e t M a g i c k T h r e a d V a l u e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
-% MagickSetThreadValue() associates a value with the thread key.
+% SetMagickThreadValue() binds a value to the specified key on behalf of the
+% calling thread.
%
-% The format of the MagickSetThreadValue method is:
+% The format of the SetMagickThreadValue method is:
%
-% MagickBooleanType MagickSetThreadValue(MagickThreadKey key,
+% MagickBooleanType SetMagickThreadValue(MagickThreadKey key,
% const void *value)
%
% A description of each parameter follows:
%
% o key: the thread key.
%
-% o value: the value
+% o value: the value.
%
*/
-MagickExport MagickBooleanType MagickSetThreadValue(MagickThreadKey key,
+MagickExport MagickBooleanType SetMagickThreadValue(MagickThreadKey key,
const void *value)
{
#if defined(MAGICKCORE_THREAD_SUPPORT)
return(pthread_setspecific(key,value) == 0 ? MagickTrue : MagickFalse);
-#elif defined(MAGICKCORE_HAVE_WINTHREADS)
+#elif defined(MAGICKCORE_WINDOWS_SUPPORT)
return(TlsSetValue(key,(void *) value) != 0 ? MagickTrue : MagickFalse);
#else
- *key=(size_t) value;
+ {
+ MagickThreadValue
+ *keys;
+
+ keys=(MagickThreadValue *) key;
+ keys->values[GetOpenMPThreadId()]=(void *) value;
+ }
return(MagickTrue);
#endif
}
projects / imagemagick / blobdiff