Function BMK_initStatic_timedFnState

freebsd/contrib/zstd/programs/benchfn.c:170–182

void BMK_freeTimedFnState(BMK_timedFnState_t* state) { free(state); }

BMK_timedFnState_t*
BMK_initStatic_timedFnState(void* buffer, size_t size, unsigned total_ms, unsigned run_ms)
{
    typedef char check_size[ 2 * (sizeof(BMK_timedFnState_shell) >= sizeof(struct BMK_timedFnState_s)) - 1];  /* static assert : a compilation failure indicates that BMK_timedFnState_shell is not large enough */
    typedef struct { check_size c; BMK_timedFnState_t tfs; } tfs_align;  /* force tfs to be aligned at its next best position */
    size_t const tfs_alignment = offsetof(tfs_align, tfs); /* provides the minimal alignment restriction for BMK_timedFnState_t */
    BMK_timedFnState_t* const r = (BMK_timedFnState_t*)buffer;
    if (buffer == NULL) return NULL;
    if (size < sizeof(struct BMK_timedFnState_s)) return NULL;
    if ((size_t)buffer % tfs_alignment) return NULL;  /* buffer must be properly aligned */
    BMK_resetTimedFnState(r, total_ms, run_ms);
    return r;
}

void BMK_resetTimedFnState(BMK_timedFnState_t* timedFnState, unsigned total_ms, unsigned run_ms)
{