Home About ASN.1 Products Free Software Documents Services Resources Resellers Customers Careers About Us Contact Us

Context Management Functions Context initialization functions handle the allocation, initialization, and destruction of context variables (variables of type OSCTXT). More... Classes struct   OSBuffer   Run-time message buffer structure. More... struct   OSErrLocn   Run-time error location structure. More... struct   OSErrInfo   Run-time error information structure. More... struct   OSErrInfoList struct   OSBufSave   Structure to save the current message buffer state. More... struct   OSCTXT   Run-time context structure. More... struct   OSBuffer   Run-time message buffer structure. More... struct   OSErrLocn   Run-time error location structure. More... struct   OSErrInfo   Run-time error information structure. More... struct   OSBufSave   Structure to save the current message buffer state. More... struct   OSCTXT   Run-time context structure. More... Defines #define  OSERRSTKSIZ   8 #define  OSMAXERRPRM   5 #define  OS_GET_FIRST_ERROR_INFO(pctxt) #define  OS_GET_LAST_ERROR_INFO(pctxt) Typedefs typedef OSUINT16  OSRTFLAGS typedef int(*  OSFreeCtxtAppInfoPtr )(OSCTXT *pctxt) typedef int(*  OSResetCtxtAppInfoPtr )(OSCTXT *pctxt) Functions int  rtxInitContext (OSCTXT *pctxt)   This function initializes an OSCTXT block. int  rtxInitContextBuffer (OSCTXT *pctxt, OSOCTET *bufaddr, size_t bufsiz)   This function assigns a message buffer to a context block. void  rtxFreeContext (OSCTXT *pctxt)   This function frees all dynamic memory associated with a context. void  rtxCtxtSetFlag (OSCTXT *pctxt, OSUINT16 mask)   This function is used to set a processing flag within the context structure. void  rtxCtxtClearFlag (OSCTXT *pctxt, OSUINT16 mask)   This function is used to clear a processing flag within the context structure. Detailed Description Context initialization functions handle the allocation, initialization, and destruction of context variables (variables of type OSCTXT). These variables hold all of the working data used during the process of encoding or decoding a message. The context provides thread safe operation by isolating what would otherwise be global variables within this structure. The context variable is passed from function to function as a message is encoded or decoded and maintains state information on the encoding or decoding process. Function Documentation void rtxCtxtClearFlag (  OSCTXT *  pctxt, OSUINT16  mask )    This function is used to clear a processing flag within the context structure. Parameters: pctxt  - A pointer to a context structure. mask  - Mask containing bit(s) to be cleared. void rtxCtxtSetFlag (  OSCTXT *  pctxt, OSUINT16  mask )    This function is used to set a processing flag within the context structure. Parameters: pctxt  - A pointer to a context structure. mask  - Mask containing bit(s) to be set. void rtxFreeContext (  OSCTXT *  pctxt  )    This function frees all dynamic memory associated with a context. This includes all memory allocated using the rtxMem functions using the given context parameter. Parameters: pctxt  - A pointer to a context structure. int rtxInitContext (  OSCTXT *  pctxt  )    This function initializes an OSCTXT block. It sets all key working parameters to their correct initial state values. It is required that this function be invoked before using a context variable. Parameters: pctxt  Pointer to the context structure variable to be initialized. Returns: Completion status of operation: 0 = success, negative return value is error. int rtxInitContextBuffer (  OSCTXT *  pctxt, OSOCTET *  bufaddr, size_t  bufsiz )    This function assigns a message buffer to a context block. The block should have been previously initialized by rtInitContext. Parameters: pctxt  The pointer to the context structure variable to be initialized. bufaddr  For encoding, the address of a memory buffer to receive the encoded message. If this address is NULL (0), encoding to a dynamic buffer will be done. For decoding, the address of a buffer that contains the message data to be decoded. bufsiz  The size of the memory buffer. For encoding, this argument may be set to zero to indicate a dynamic memory buffer should be used. Returns: Completion status of operation: 0 = success, negative return value is error. This file was last modified on 8 Jan 2007. XBinder, Version 1.1.9