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test-spark: add object-size assertions

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This commit is contained in:
Norman Feske 2019-03-07 18:54:41 +01:00 committed by Christian Helmuth
parent 2a71c8fa82
commit 30505c7977
3 changed files with 30 additions and 0 deletions
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5
repos/libports/src/test/spark/machinery.adb
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@ -2,6 +2,11 @@ pragma Ada_2012;
package body Machinery is
function Number_Of_Bits (Machinery : Machinery_Type) return Number_Of_Bits_Type is
begin
return Machinery'Size;
end Number_Of_Bits;
procedure Initialize (Machinery : out Machinery_Type) is
begin
Machinery := ( Temperature => 25 );

7
repos/libports/src/test/spark/machinery.ads
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@ -2,10 +2,17 @@ package Machinery is
pragma Pure;
type Number_Of_Bits_Type is mod 2**32 with Size => 32;
type Temperature_Type is mod 2**32 with Size => 32;
type Machinery_Type is private;
function Number_of_bits (Machinery : Machinery_Type) return Number_Of_Bits_Type
with Export,
Convention => C,
External_Name => "_ZN5Spark14number_of_bitsERKNS_9MachineryE";
procedure Initialize (Machinery : out Machinery_Type)
with Export,
Convention => C,

18
repos/libports/src/test/spark/machinery.h
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@ -20,6 +20,13 @@ namespace Spark {
template <Genode::size_t BYTES>
struct Object
{
/**
* Exception type
*/
struct Object_size_mismatch { };
static constexpr Genode::size_t bytes() { return BYTES; }
long _space[(BYTES + sizeof(long) - 1)/sizeof(long)] { };
};
@ -31,6 +38,15 @@ namespace Spark {
Genode::uint32_t temperature() const;
};
Genode::size_t number_of_bits(Machinery const &);
template <typename T>
static inline void assert_valid_object_size()
{
if (number_of_bits(*(T *)nullptr) > T::bytes()*8)
throw typename T::Object_size_mismatch();
}
}
@ -38,6 +54,8 @@ static inline void test_spark_object_construction()
{
using namespace Genode;
Spark::assert_valid_object_size<Spark::Machinery>();
Spark::Machinery machinery { };
auto check = [&] (char const *msg, Genode::uint32_t expected)