ObjFW  Diff

#ifdef HAVE_DLFCN_H
# include <dlfcn.h>
#endif

#import "OFException.h"
#import "OFArray.h"
#import "OFLocale.h"
#ifdef OF_HAVE_THREADS
# import "OFMutex.h"
#endif
#import "OFString.h"
#import "OFSystemInfo.h"

#import "OFInitializationFailedException.h"
#import "OFLockFailedException.h"
#import "OFUnlockFailedException.h"

#if !defined(HAVE_STRERROR_R) && defined(OF_HAVE_THREADS)
# import "mutex.h"
#endif

#if defined(OF_WINDOWS) && defined(OF_HAVE_SOCKETS)
# include <winerror.h>
#endif

#if defined(OF_ARM) && !defined(__ARM_DWARF_EH__)
# define HAVE_ARM_EHABI_EXCEPTIONS
#endif

extern uintptr_t _Unwind_GetIP(struct _Unwind_Context *);
#else
extern int _Unwind_VRS_Get(struct _Unwind_Context *, int, uint32_t, int,
    void *);
#endif

#if !defined(HAVE_STRERROR_R) && defined(OF_HAVE_THREADS)
static of_mutex_t mutex;
static OFMutex *mutex;

OF_CONSTRUCTOR()
{
	if (of_mutex_new(&mutex) != 0)
		@throw [OFInitializationFailedException exception];
	mutex = [[OFMutex alloc] init];
}

OF_DESTRUCTOR()
{
	[mutex release];
}
#endif

OFString *
of_strerror(int errNo)
{
	OFString *ret;

	if (strerror_r(errNo, buffer, 256) != 0)
		return @"Unknown error (strerror_r failed)";

	ret = [OFString stringWithCString: buffer
				 encoding: [OFLocale encoding]];
#else
# ifdef OF_HAVE_THREADS
	if (of_mutex_lock(&mutex) != 0)
		@throw [OFLockFailedException exception];

	[mutex lock];
	@try {
# endif
		ret = [OFString
		    stringWithCString: strerror(errNo)
			     encoding: [OFLocale encoding]];
# ifdef OF_HAVE_THREADS
	} @finally {
		if (of_mutex_unlock(&mutex) != 0)
		[mutex unlock];
			@throw [OFUnlockFailedException exception];
	}
# endif
#endif

	return ret;
}