C++ (Cpp) sp_in_stk_segの例

コード例 #1

ファイル: rust_task.cpp プロジェクト: Xazax-hun/rust

/*
Called by landing pads during unwinding to figure out which stack segment we
are currently running on and record the stack limit (which was not restored
when unwinding through __morestack).
 */
void
rust_task::reset_stack_limit() {
    uintptr_t sp = get_sp();
    while (!sp_in_stk_seg(sp, stk)) {
        prev_stack();
        assert(stk != NULL && "Failed to find the current stack");
    }
}

コード例 #2

ファイル: rust_task.cpp プロジェクト: bihicheng/rust

void
reset_stack_limit_on_c_stack(reset_args *args) {
    rust_task *task = args->task;
    uintptr_t sp = args->sp;
    while (!sp_in_stk_seg(sp, task->stk)) {
        task->stk = task->stk->prev;
        assert(task->stk != NULL && "Failed to find the current stack");
    }
    task->record_stack_limit();
}

コード例 #3

ファイル: rust_task.cpp プロジェクト: HOLYCOWBATMAN/rust

/*
Returns true if we're currently running on the Rust stack
 */
bool
rust_task::on_rust_stack() {
    if (stk == NULL) {
        // This only happens during construction
        return false;
    }

    uintptr_t sp = get_sp();
    bool in_first_segment = sp_in_stk_seg(sp, stk);
    if (in_first_segment) {
        return true;
    } else if (stk->prev != NULL) {
        // This happens only when calling the upcall to delete
        // a stack segment
        bool in_second_segment = sp_in_stk_seg(sp, stk->prev);
        return in_second_segment;
    } else {
        return false;
    }
}