1 files changed, 89 insertions, 0 deletions
diff --git a/include/net-snmp/library/mt_support.h b/include/net-snmp/library/mt_support.h
new file mode 100644
index 0000000..4e35d33
--- /dev/null
+++ b/include/net-snmp/library/mt_support.h
@@ -0,0 +1,89 @@
+/*
+ * mt_support.h - multi-thread resource locking support declarations 
+ */
+/*
+ * Author: Markku Laukkanen
+ * Created: 6-Sep-1999
+ * History:
+ *  8-Sep-1999 M. Slifcak method names changed;
+ *                        use array of resource locking structures.
+ */
+
+#ifndef MT_SUPPORT_H
+#define MT_SUPPORT_H
+
+#ifdef __cplusplus
+extern          "C" {
+#endif
+  
+/*
+ * Lock group identifiers 
+ */
+
+#define MT_LIBRARY_ID      0
+#define MT_APPLICATION_ID  1
+#define MT_TOKEN_ID        2
+
+#define MT_MAX_IDS         3    /* one greater than last from above */
+#define MT_MAX_SUBIDS      10
+
+
+/*
+ * Lock resource identifiers for library resources 
+ */
+
+#define MT_LIB_NONE        0
+#define MT_LIB_SESSION     1
+#define MT_LIB_REQUESTID   2
+#define MT_LIB_MESSAGEID   3
+#define MT_LIB_SESSIONID   4
+#define MT_LIB_TRANSID     5
+
+#define MT_LIB_MAXIMUM     6    /* must be one greater than the last one */
+
+
+#if defined(NETSNMP_REENTRANT) || defined(WIN32)
+
+#if HAVE_PTHREAD_H
+#include <pthread.h>
+typedef pthread_mutex_t mutex_type;
+#ifdef pthread_mutexattr_default
+#define MT_MUTEX_INIT_DEFAULT pthread_mutexattr_default
+#else
+#define MT_MUTEX_INIT_DEFAULT 0
+#endif
+
+#elif defined(WIN32) || defined(cygwin)
+
+#include <windows.h>
+typedef CRITICAL_SECTION mutex_type;
+
+#else  /*  HAVE_PTHREAD_H  */
+error "There is no re-entrant support as defined."
+#endif /*  HAVE_PTHREAD_H  */
+
+
+NETSNMP_IMPORT
+int             snmp_res_init(void);
+NETSNMP_IMPORT
+int             snmp_res_lock(int groupID, int resourceID);
+NETSNMP_IMPORT
+int             snmp_res_unlock(int groupID, int resourceID);
+NETSNMP_IMPORT
+int             snmp_res_destroy_mutex(int groupID, int resourceID);
+
+#else /*  NETSNMP_REENTRANT  */
+
+#ifndef WIN32
+#define snmp_res_init() do {} while (0)
+#define snmp_res_lock(x,y) do {} while (0)
+#define snmp_res_unlock(x,y) do {} while (0)
+#define snmp_res_destroy_mutex(x,y) do {} while (0)
+#endif /*  WIN32  */
+
+#endif /*  NETSNMP_REENTRANT  */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*  MT_SUPPORT_H  */