Format
int _tmem_init(void); /* no header file - defined in runtime startup code */
Language Level: Extension
_tmem_init initializes the tiled memory functions for subsystem
DLLs. (If your subsystem DLL does not use tiled memory, call
_rmem_init instead of _tmem_init.) Although subsystems do not
require a runtime environment (and therefore do not call
_CRT_init), they do require the library memory functions. For
DLLs that do use a runtime environment, the memory functions are
initialized with the environment by _CRT_init.
By default, all DLLs call the IBM C and C++ Compilers _DLL_InitTerm function, which in turn initializes the tiled memory functions for you. However, if you are writing your own subsystem _DLL_InitTerm function (for example, to perform actions other than memory initialization and termination), you must call _tmem_init from your version of _DLL_InitTerm before you can call any other library functions.
If your DLL contains C++ code, you must also call __ctordtorInit after _tmem_init to ensure that static constructors and destructors are initialized properly. __ctordtorInit is defined in the runtime startup code as:
void __ctordtorInit(void);
Return Value
If the memory functions were successfully initialized,
_tmem_init returns 0. A return code of -1 indicates an error. If
an error occurs, an error message is written to file handle 2,
which is the usual destination of stderr.
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_CRT_init -- Initialize DLL Runtime
Environment
_CRT_term -- Terminate DLL Runtime
Environment
_DLL_InitTerm -- Initialize and
Terminate DLL Environment
_rmem_init -- Initialize Memory
Functions for Subsystem DLL
_rmem_term -- Terminate Memory
Functions for Subsystem DLL