ISP_mem_alloc

#include <isp.h>

typedef struct ISP_mem_alloc {
    ISP    ISP_mem_a_hdr;  // Standard header
    USHORT ISP_mem_size;   // size of memory to allocate, in bytes
    ULONG  ISP_mem_ptr;    // address of memory block (returned)
    USHORT ISP_mem_type;   // med type code for memory block. See header file med.h
    UCHAR  ISP_mem_flags;  // allocation flags; see below
    UCHAR  ISP_pad3[3];    // Pad to DWORD boundary
} ISP_mem_alloc, *PISP_mem_alloc;

Contains information for a ISP_ALLOC_MEM function.

ISP_mem_flags

Allocation flags. Can be a combination of these values:

ISP_M_FL_INTERRUPT_TIME	Must be set if allocation is at asynchronous time.
ISP_M_FL_MUST_SUCCEED	IOS will not fail the allocation.
ISP_M_FL_SMART_ALLOC	Do system Heap allocation if not MS-DOS pager. Checks IOS's IDA structure element IDAF_DOS_PAGER to determine if system is paging through DOS. If not paging through DOS, do a system heap allocation. Otherwise use IOS's memory management system.
ISP_M_FL_USE_SYSTEM_HEAP	Don't allocate from IOS heap.

When the IOS.VXD debug binary is installed (into the system\vmm32 directory), use your debugger's ".IMED" dot command to list IOS Memory Element Descriptor information.

ISP_mem_alloc

See Also