#include <faasm/faasm.h>

#include <pthread.h>

#include <stdio.h>

int globalVar = 10;

#define SUCCESS (void*)100

#define FAILURE (void*)101

// Effects of zygote should be seen by main function by default

FAASM_ZYGOTE()

{

globalVar = 20;

return 0;

}

// Thread should see global changes made in the main thread

void* threadFunc(void* arg)

{

printf("Thread global var %i (%p)\n", globalVar, &globalVar);

if (globalVar != 30) {

printf("Expected thread to see 30 but got %i\n", globalVar);

return FAILURE;

} else {

printf("Threads sees %i as expected\n", globalVar);

}

return SUCCESS;

}

int main(int argc, char* argv[])

{

if (globalVar != 20) {

printf("Expected main thread to see 20 but got %i\n", globalVar);

return 1;

}

// Update the global var, this should be captured in the snapshot

globalVar = 30;

printf("Main global var %i (%p)\n", globalVar, &globalVar);

// Run a thread

pthread_t t;

int ret = pthread_create(&t, NULL, threadFunc, nullptr);

if (ret != 0) {

printf("Error creating thread (%i)\n", ret);

return 1;

}

// Join the thread

int* res;

if (pthread_join(t, (void**)&res)) {

printf("Error joining thread\n");

return 1;

}

// Check result of the thread

if (res != SUCCESS) {

printf("Thread execution failed\n");

return 1;

}

return 0;

}