rw_alloc.h

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#ifndef RW_ALLOC_H_INCLUDED
#define RW_ALLOC_H_INCLUDED
 
 
#include <rw_testdefs.h>   // for test config macros
 
enum {
    RW_PROT_NONE  = 0,
    RW_PROT_READ  = 1 << 0,
    RW_PROT_WRITE = 1 << 1,
    RW_PROT_RDWR  = RW_PROT_READ | RW_PROT_WRITE,
    RW_PROT_BELOW = 1 << 3
};
 
// if flags == -1 memory will be allocated by malloc();
// if flags != -1 memory will be allocated by system call and
// additional guard page with PAGE_NOACCESS protection will be allocated
// if RW_PROT_BELOW & flags != 0 then guard page will be located right
// before the user data, otherwise - right after the user data
// if RWSTD_ALLOC_FLAGS environment variable is defined and != 0
// and flags == -1, then rw_alloc will use value of RWSTD_ALLOC_FLAGS
// instead of flags variable
_TEST_EXPORT void*
rw_alloc(_RWSTD_SIZE_T, int /*flags*/ = -1);
 
// free the memory block, allocated by rw_alloc()
_TEST_EXPORT void
rw_free(void*);
 
#endif   // RW_ALLOC_H_INCLUDED