mariadb/storage/connect/block.h
Olivier Bertrand 4d93c7f3b0 In CONNECT version 1.6.10 NOSQL facility is enhanced by a new way to retrieve NOSQL data.
In addition to files and Mongo collections, JSON as well as XML and CSV data can be retrieved
from the net as answers from REST queries. Because it uses and external package (cpprestsdk)
this is currently available only to MariaDB servers compiled from source.

-- Add compile flags needed on Windows /MD or /MDd (debug)
-- Also include some changes needed on Linux
  modified:   storage/connect/CMakeLists.txt

- Add the xtrc tracing function
  modified:   storage/connect/global.h
  modified:   storage/connect/plugutil.cpp

- Modify tracing to use xtrc and some typo
  modified:   storage/connect/array.cpp
  modified:   storage/connect/block.h
  modified:   storage/connect/restget.cpp

- Fix compilation error when ZIP is not supported
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/tabfmt.cpp

- Add some tracing + typo
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/tabjson.cpp

- Add conditional code based on MARIADB
  This to be able to use the same code in CONNECT and EOM modules
  modified:   storage/connect/osutil.h
  modified:   storage/connect/tabrest.cpp

- Replace PlugSetPath by some concat (crashed on Fedora) + typo
  modified:   storage/connect/reldef.cpp

- Try to fix test failures
  modified:   zlib/CMakeLists.txt
2019-08-17 16:58:58 +02:00

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2.7 KiB
C++

/**************** Block H Declares Source Code File (.H) ***************/
/* Name: BLOCK.H Version 2.0 */
/* */
/* (C) Copyright to the author Olivier BERTRAND 1998 */
/* */
/* This file contains the BLOCK pure virtual class definition. */
/*---------------------------------------------------------------------*/
/* Note: one of the main purpose of this base class is to take care */
/* of the very specific way Plug handles memory allocation. */
/* Instead of allocating small chunks of storage via new or malloc */
/* Plug works in its private memory pool in which it does the sub- */
/* allocation using the function PlugSubAlloc. These are never freed */
/* separately but when a transaction is terminated, the entire pool */
/* is set to empty, resulting in a very fast and efficient allocate */
/* process, no garbage collection problem, and an automatic recovery */
/* procedure (via LongJump) when the memory is exhausted. */
/* For this to work new must be given two parameters, first the */
/* global pointer of the Plug application, and an optional pointer to */
/* the memory pool to use, defaulting to NULL meaning using the Plug */
/* standard default memory pool, example: */
/* tabp = new(g) XTAB("EMPLOYEE"); */
/* allocates a XTAB class object in the standard Plug memory pool. */
/***********************************************************************/
#if !defined(BLOCK_DEFINED)
#define BLOCK_DEFINED
#if defined(__WIN__) && !defined(NOEX)
#define DllExport __declspec( dllexport )
#else // !__WIN__
#define DllExport
#endif // !__WIN__
/***********************************************************************/
/* Definition of class BLOCK with its method function new. */
/***********************************************************************/
typedef class BLOCK *PBLOCK;
class DllExport BLOCK {
public:
void * operator new(size_t size, PGLOBAL g, void *p = NULL) {
xtrc(256, "New BLOCK: size=%d g=%p p=%p\n", size, g, p);
return (PlugSubAlloc(g, p, size));
} // end of new
virtual void Printf(PGLOBAL, FILE *, uint) {} // Produce file desc
virtual void Prints(PGLOBAL, char *, uint) {} // Produce string desc
#if !defined(__BORLANDC__)
// Avoid warning C4291 by defining a matching dummy delete operator
void operator delete(void *, PGLOBAL, void *) {}
void operator delete(void *, size_t) {}
#endif
virtual ~BLOCK() {}
}; // end of class BLOCK
#endif // !BLOCK_DEFINED