Change thread entry function and timer expiration function prototypes…

[phuerta79]

These functions have an ULONG type param, so if you want to pass a pointer to something you can cast it and it will fit in the ULONG param in 32 bit machines. But in 64 bit machines the pointer will not fit, so I propose to change this param to ALIGN_TYPE type.

For example, the following code will work in 32 bit machines, but it will not work on 64 bit machines:

struct my_object_type;

void my_thread_example_entry(ULONG param)
{
struct my_object_type *obj = (struct my_object_type *)param;
. . . 
}

void    tx_application_define(void *first_unused_memory)
{
 . . . 
tx_thread_create(&thread_1, "thread 1", my_thread_example_entry, (ULONG)&my_object,  
            stack_start, STACK_SIZE, 16, 16, 4, TX_AUTO_START);

. . . 
}

With the changes proposed, the code will turn into:

struct my_object_type;

void my_thread_example_entry(ALIGN_TYPE param)
{
struct my_object_type *obj = (struct my_object_type *)param;
. . . 
}

void    tx_application_define(void *first_unused_memory)
{
 . . . 
tx_thread_create(&thread_1, "thread 1", my_thread_example_entry, (ALIGN_TYPE )&my_object,  
            stack_start, STACK_SIZE, 16, 16, 4, TX_AUTO_START);

. . . 
}

And it will work ok both in 32 and 64 bit systems.

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[phuerta79]

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[goldscott]

Hi @phuerta79 - I would like to make this change, but we are discussing this internally. In the meantime, you can use these extensions to pass 64-bit values to threads: https://github.com/azure-rtos/threadx/blob/master/common/inc/tx_api.h#L234-L259
You may need to modify your tx_port.h file, as done here: https://github.com/azure-rtos/threadx/blob/master/ports_smp/cortex_a5x_smp/gnu/inc/tx_port.h#L281

[phuerta79]

Hi @goldscott ,
Thanks for your feedback. I will take a look at what yo propose.