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57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
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/*
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* snmp_locking.h - multi-thread resource locking support declarations
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*/
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/*
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* Author: Markku Laukkanen
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* Created: 6-Sep-1999
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* History:
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* 8-Sep-1999 M. Slifcak method names changed;
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* use array of resource locking structures.
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* 3-Jan-2001 R. Story copy mt_resource.h to snmp_locking.h
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*/
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#ifndef SNMP_LOCKING_H
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#define SNMP_LOCKING_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef NS_REENTRANT
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#if HAVE_PTHREAD_H
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#include <pthread.h>
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typedef pthread_mutex_t mutex_type;
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#ifdef pthread_mutexattr_default
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#define MT_MUTEX_INIT_DEFAULT pthread_mutexattr_default
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#else
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#define MT_MUTEX_INIT_DEFAULT 0
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#endif
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#elif defined(WIN32) || defined(cygwin)
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#include <windows.h>
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typedef CRITICAL_SECTION mutex_type;
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#else
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error "There is no re-entrant support as defined."
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#endif /* HAVE_PTHREAD_H */
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int netsnmp_mutex_init(mutex_type *);
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int netsnmp_mutex_lock(mutex_type *);
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int netsnmp_mutex_unlock(mutex_type *);
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int netsnmp_mutex_destroy_mutex(mutex_type *);
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#else /* !NS_REENTRANT */
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#define netsnmp_mutex_init(x) do {} while (0)
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#define netsnmp_mutex_lock(x) do {} while (0)
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#define netsnmp_mutex_unlock(x) do {} while (0)
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#define netsnmp_mutex_destroy_mutex(x) do {} while (0)
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#endif /* !NS_REENTRANT */
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#ifdef __cplusplus
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}
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#endif
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#endif /* SNMP_LOCKING_H */
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