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test-marshallers: Use unaligned structure

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Allows to test for bad performance on some systems.
For instance on ARMv6/ARMv7 which does not support by default
64 bit unaligned read/write this can be checked on Linux
using /proc/cpu/alignment file.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
This commit is contained in:
Frediano Ziglio 2017-09-20 15:38:38 +01:00
parent 74e50b57ae
commit c25c75b552
3 changed files with 8 additions and 4 deletions
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10
tests/test-marshallers.c
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@ -8,10 +8,11 @@
#define g_assert_true g_assert
#endif
static uint8_t expected_data[] = { 0x02, 0x00, 0x00, 0x00, /* data_size */
0x08, 0x00, 0x00, 0x00, /* data offset */
0xef, 0xcd, 0xab, 0x90, 0x78, 0x56, 0x34, 0x12, /* data */
static uint8_t expected_data[] = { 123, /* dummy byte */
0x02, 0x00, 0x00, 0x00, /* data_size */
0x09, 0x00, 0x00, 0x00, /* data offset */
0xef, 0xcd, 0xab, 0x90, 0x78, 0x56, 0x34, 0x12, /* data */
0x21, 0x43, 0x65, 0x87, 0x09, 0xba, 0xdc, 0xfe, /* data */
};
int main(int argc G_GNUC_UNUSED, char **argv G_GNUC_UNUSED)
@ -23,9 +24,10 @@ int main(int argc G_GNUC_UNUSED, char **argv G_GNUC_UNUSED)
uint8_t *data;
msg = spice_malloc0(sizeof(SpiceMsgMainShortDataSubMarshall) + 2 * sizeof(uint64_t));
msg->dummy_byte = 123;
msg->data_size = 2;
msg->data[0] = 0x1234567890abcdef;
msg->data[1] = 0x1234567890abcdef;
msg->data[1] = 0xfedcba0987654321;
marshaller = spice_marshaller_new();
spice_marshall_msg_main_ShortDataSubMarshall(marshaller, msg);

1
tests/test-marshallers.h
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@ -4,6 +4,7 @@
typedef struct {
uint32_t data_size;
uint8_t dummy_byte;
uint64_t data[];
} SpiceMsgMainShortDataSubMarshall;

1
tests/test-marshallers.proto
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@ -1,5 +1,6 @@
channel TestChannel {
message {
uint8 dummy_byte; // so structure is not aligned
uint32 data_size;
uint64 *data[data_size] @marshall;
} ShortDataSubMarshall;