/*
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% A c q u i r e S e m a p h o r e I n f o %
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% AcquireSemaphoreInfo() acquires a semaphore.
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% The format of the AcquireSemaphoreInfo method is:
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% void AcquireSemaphoreInfo(SemaphoreInfo **semaphore_info)
%
% A description of each parameter follows:
%
% o semaphore_info: Specifies a pointer to an SemaphoreInfo structure.
%
*/
MagickExport void AcquireSemaphoreInfo(SemaphoreInfo **semaphore_info)
{
assert(semaphore_info != (SemaphoreInfo **) NULL);
#if defined(HAVE_PTHREAD)
if (pthread_mutex_lock(&semaphore_mutex) != 0)
{
(void) fprintf(stderr,"pthread_mutex_lock failed %s\n",strerror(errno));
_exit(1);
}
#endif
#if defined(__WINDOWS__)
while (InterlockedCompareExchange(&semaphore_mutex,1L,0L) != 0)
Sleep(10);
#endif
if (*semaphore_info == (SemaphoreInfo *) NULL)
*semaphore_info=AllocateSemaphoreInfo();
#if defined(HAVE_PTHREAD)
if (pthread_mutex_unlock(&semaphore_mutex) != 0)
{
(void) fprintf(stderr,"pthread_mutex_unlock failed %s\n",strerror(errno));
_exit(1);
}
#endif
#if defined(__WINDOWS__)
InterlockedExchange(&semaphore_mutex,0L);
#endif
(void) LockSemaphoreInfo(*semaphore_info);
}
/*
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+ I n i t i a l i z e D e l e g a t e I n f o %
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% Method InitializeDelegateInfo initializes the delegate facility
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% The format of the InitializeDelegateInfo method is:
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% MagickPassFail InitializeDelegateInfo(void)
%
%
*/
MagickPassFail
InitializeDelegateInfo(void)
{
assert(delegate_semaphore == (SemaphoreInfo *) NULL);
delegate_semaphore=AllocateSemaphoreInfo();
return MagickPass;
}
/*
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% G e t E x c e p t i o n I n f o %
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% GetExceptionInfo() initializes an exception to default values.
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% The format of the GetExceptionInfo method is:
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% GetExceptionInfo(ExceptionInfo *exception)
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% A description of each parameter follows:
%
% o exception: the exception info.
%
*/
MagickExport void GetExceptionInfo(ExceptionInfo *exception)
{
assert(exception != (ExceptionInfo *) NULL);
(void) ResetMagickMemory(exception,0,sizeof(*exception));
exception->severity=UndefinedException;
exception->exceptions=(void *) NewLinkedList(0);
exception->semaphore=AllocateSemaphoreInfo();
exception->signature=MagickSignature;
}
/*
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% A c q u i r e S e m a p h o r e I n f o %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% AcquireSemaphoreInfo() acquires a semaphore.
%
% The format of the AcquireSemaphoreInfo method is:
%
% void AcquireSemaphoreInfo(SemaphoreInfo **semaphore_info)
%
% A description of each parameter follows:
%
% o semaphore_info: Specifies a pointer to an SemaphoreInfo structure.
%
*/
MagickExport void AcquireSemaphoreInfo(SemaphoreInfo **semaphore_info)
{
assert(semaphore_info != (SemaphoreInfo **) NULL);
if (*semaphore_info == (SemaphoreInfo *) NULL)
{
LockMagickMutex();
if (*semaphore_info == (SemaphoreInfo *) NULL)
*semaphore_info=AllocateSemaphoreInfo();
UnlockMagickMutex();
}
}
/*
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+ I n i t i a l i z e M a g i c k I n f o L i s t %
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% Method InitializeMagickInfoList initializes the magick info facility
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% The format of the InitializeMagickInfoList method is:
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% MagickPassFail InitializeMagickInfoList(void)
%
%
*/
MagickPassFail
InitializeMagickInfoList(void)
{
assert(magick_semaphore == (SemaphoreInfo *) NULL);
magick_semaphore=AllocateSemaphoreInfo();
#if defined(SupportMagickModules)
assert(module_semaphore == (SemaphoreInfo *) NULL);
module_semaphore=AllocateSemaphoreInfo();
#endif /* #if defined(SupportMagickModules) */
#if !defined(BuildMagickModules)
RegisterStaticModules(); /* Register all static modules */
#endif /* !defined(BuildMagickModules) */
#if defined(SupportMagickModules)
InitializeMagickModules(); /* Module loader */
#endif /* defined(SupportMagickModules) */
return MagickPass;
}
/*
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% G e t Q u a n t u m I n f o %
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% GetQuantumInfo() initializes the QuantumInfo structure to default values.
%
% The format of the GetQuantumInfo method is:
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% GetQuantumInfo(const ImageInfo *image_info,QuantumInfo *quantum_info)
%
% A description of each parameter follows:
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% o image_info: the image info.
%
% o quantum_info: the quantum info.
%
*/
MagickExport void GetQuantumInfo(const ImageInfo *image_info,
QuantumInfo *quantum_info)
{
const char
*option;
assert(quantum_info != (QuantumInfo *) NULL);
(void) ResetMagickMemory(quantum_info,0,sizeof(*quantum_info));
quantum_info->quantum=8;
quantum_info->maximum=1.0;
quantum_info->scale=QuantumRange;
quantum_info->pack=MagickTrue;
quantum_info->semaphore=AllocateSemaphoreInfo();
quantum_info->signature=MagickSignature;
if (image_info == (const ImageInfo *) NULL)
return;
option=GetImageOption(image_info,"quantum:format");
if (option != (char *) NULL)
quantum_info->format=(QuantumFormatType) ParseCommandOption(
MagickQuantumFormatOptions,MagickFalse,option);
option=GetImageOption(image_info,"quantum:minimum");
if (option != (char *) NULL)
quantum_info->minimum=StringToDouble(option,(char **) NULL);
option=GetImageOption(image_info,"quantum:maximum");
if (option != (char *) NULL)
quantum_info->maximum=StringToDouble(option,(char **) NULL);
if ((quantum_info->minimum == 0.0) && (quantum_info->maximum == 0.0))
quantum_info->scale=0.0;
else
if (quantum_info->minimum == quantum_info->maximum)
{
quantum_info->scale=(MagickRealType) QuantumRange/quantum_info->minimum;
quantum_info->minimum=0.0;
}
else
quantum_info->scale=(MagickRealType) QuantumRange/(quantum_info->maximum-
quantum_info->minimum);
option=GetImageOption(image_info,"quantum:scale");
if (option != (char *) NULL)
quantum_info->scale=StringToDouble(option,(char **) NULL);
option=GetImageOption(image_info,"quantum:polarity");
if (option != (char *) NULL)
quantum_info->min_is_white=LocaleCompare(option,"min-is-white") == 0 ?
MagickTrue : MagickFalse;
quantum_info->endian=image_info->endian;
ResetQuantumState(quantum_info);
}
/*
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% A c q u i r e S e m a p h o r e I n f o %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% AcquireSemaphoreInfo() acquires a semaphore.
%
% The format of the AcquireSemaphoreInfo method is:
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% void AcquireSemaphoreInfo(SemaphoreInfo **semaphore_info)
%
% A description of each parameter follows:
%
% o semaphore_info: Specifies a pointer to an SemaphoreInfo structure.
%
*/
MagickExport void AcquireSemaphoreInfo(SemaphoreInfo **semaphore_info)
{
assert(semaphore_info != (SemaphoreInfo **) NULL);
#if defined(MAGICKCORE_HAVE_PTHREAD)
if (pthread_mutex_lock(&semaphore_mutex) != 0)
(void) fprintf(stderr,"pthread_mutex_lock failed %s\n",
GetExceptionMessage(errno));
#elif defined(MAGICKORE_HAVE_WINTHREADS)
while (InterlockedCompareExchange(&semaphore_mutex,1L,0L) != 0)
Sleep(10);
#endif
if (*semaphore_info == (SemaphoreInfo *) NULL)
*semaphore_info=AllocateSemaphoreInfo();
#if defined(MAGICKCORE_HAVE_PTHREAD)
if (pthread_mutex_unlock(&semaphore_mutex) != 0)
(void) fprintf(stderr,"pthread_mutex_unlock failed %s\n",
GetExceptionMessage(errno));
#elif defined(MAGICKORE_HAVE_WINTHREADS)
InterlockedExchange(&semaphore_mutex,0L);
#endif
(void) LockSemaphoreInfo(*semaphore_info);
}
/*
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+ M a g i c C o m p o n e n t G e n e s i s %
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% MagicComponentGenesis() instantiates the magic component.
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% The format of the MagicComponentGenesis method is:
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% MagickBooleanType MagicComponentGenesis(void)
%
*/
MagickExport MagickBooleanType MagicComponentGenesis(void)
{
if (magic_semaphore == (SemaphoreInfo *) NULL)
magic_semaphore=AllocateSemaphoreInfo();
return(MagickTrue);
}
/*
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+ C o n f i g u r e C o m p o n e n t G e n e s i s %
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% ConfigureComponentGenesis() instantiates the configure component.
%
% The format of the ConfigureComponentGenesis method is:
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% MagickBooleanType ConfigureComponentGenesis(void)
%
*/
MagickExport MagickBooleanType ConfigureComponentGenesis(void)
{
if (configure_semaphore == (SemaphoreInfo *) NULL)
configure_semaphore=AllocateSemaphoreInfo();
return(MagickTrue);
}
/*
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+ R e g i s t r y C o m p o n e n t G e n e s i s %
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% RegistryComponentGenesis() instantiates the registry component.
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% The format of the RegistryComponentGenesis method is:
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% MagickBooleanType RegistryComponentGenesis(void)
%
*/
MagickExport MagickBooleanType RegistryComponentGenesis(void)
{
if (registry_semaphore == (SemaphoreInfo *) NULL)
registry_semaphore=AllocateSemaphoreInfo();
return(MagickTrue);
}
